/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/array-cav19/array_init_nondet_vars.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 19:46:23,849 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 19:46:23,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 19:46:23,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 19:46:23,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 19:46:23,922 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 19:46:23,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 19:46:23,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 19:46:23,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 19:46:23,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 19:46:23,929 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 19:46:23,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 19:46:23,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 19:46:23,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 19:46:23,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 19:46:23,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 19:46:23,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 19:46:23,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 19:46:23,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 19:46:23,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 19:46:23,952 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-01-31 19:46:23,965 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 19:46:23,965 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 19:46:23,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 19:46:23,967 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 19:46:23,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 19:46:23,967 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 19:46:23,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 19:46:23,967 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 19:46:23,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 19:46:23,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 19:46:23,968 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 19:46:23,969 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 19:46:23,969 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 19:46:23,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 19:46:23,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 19:46:23,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 19:46:23,969 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 19:46:23,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 19:46:23,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 19:46:23,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 19:46:23,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 19:46:23,970 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 19:46:23,970 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 19:46:23,970 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 19:46:24,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 19:46:24,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 19:46:24,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 19:46:24,210 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 19:46:24,210 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 19:46:24,211 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-cav19/array_init_nondet_vars.c [2022-01-31 19:46:24,262 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d693d1ee2/7755c1d7bac240278be92d1a78c4188e/FLAG9c5e141e1 [2022-01-31 19:46:24,578 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 19:46:24,578 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-cav19/array_init_nondet_vars.c [2022-01-31 19:46:24,586 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d693d1ee2/7755c1d7bac240278be92d1a78c4188e/FLAG9c5e141e1 [2022-01-31 19:46:24,996 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d693d1ee2/7755c1d7bac240278be92d1a78c4188e [2022-01-31 19:46:24,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 19:46:24,998 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 19:46:25,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 19:46:25,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 19:46:25,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 19:46:25,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 07:46:24" (1/1) ... [2022-01-31 19:46:25,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29e8496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:46:25, skipping insertion in model container [2022-01-31 19:46:25,015 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 07:46:24" (1/1) ... [2022-01-31 19:46:25,019 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 19:46:25,039 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 19:46:25,237 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-cav19/array_init_nondet_vars.c[413,426] [2022-01-31 19:46:25,268 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 19:46:25,272 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 19:46:25,285 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-cav19/array_init_nondet_vars.c[413,426] [2022-01-31 19:46:25,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 19:46:25,330 INFO L208 MainTranslator]: Completed translation [2022-01-31 19:46:25,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:46:25 WrapperNode [2022-01-31 19:46:25,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 19:46:25,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 19:46:25,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 19:46:25,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 19:46:25,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:46:25" (1/1) ... [2022-01-31 19:46:25,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:46:25" (1/1) ... [2022-01-31 19:46:25,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:46:25" (1/1) ... [2022-01-31 19:46:25,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:46:25" (1/1) ... [2022-01-31 19:46:25,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:46:25" (1/1) ... [2022-01-31 19:46:25,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:46:25" (1/1) ... [2022-01-31 19:46:25,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:46:25" (1/1) ... [2022-01-31 19:46:25,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 19:46:25,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 19:46:25,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 19:46:25,386 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 19:46:25,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:46:25" (1/1) ... [2022-01-31 19:46:25,412 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 19:46:25,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 19:46:25,429 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-31 19:46:25,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-31 19:46:25,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 19:46:25,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 19:46:25,460 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 19:46:25,461 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 19:46:25,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 19:46:25,461 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 19:46:25,461 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 19:46:25,461 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 19:46:25,461 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 19:46:25,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 19:46:25,461 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 19:46:25,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 19:46:25,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 19:46:25,461 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 19:46:25,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 19:46:25,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 19:46:25,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 19:46:25,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 19:46:25,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 19:46:25,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 19:46:25,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 19:46:25,508 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 19:46:25,509 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 19:46:25,601 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 19:46:25,604 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 19:46:25,604 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-31 19:46:25,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 07:46:25 BoogieIcfgContainer [2022-01-31 19:46:25,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 19:46:25,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 19:46:25,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 19:46:25,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 19:46:25,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 07:46:24" (1/3) ... [2022-01-31 19:46:25,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b6b1479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 07:46:25, skipping insertion in model container [2022-01-31 19:46:25,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:46:25" (2/3) ... [2022-01-31 19:46:25,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b6b1479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 07:46:25, skipping insertion in model container [2022-01-31 19:46:25,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 07:46:25" (3/3) ... [2022-01-31 19:46:25,630 INFO L111 eAbstractionObserver]: Analyzing ICFG array_init_nondet_vars.c [2022-01-31 19:46:25,633 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 19:46:25,633 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 19:46:25,670 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 19:46:25,674 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=JORDAN [2022-01-31 19:46:25,674 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 19:46:25,704 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 23 states have internal predecessors, (29), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 19:46:25,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-31 19:46:25,711 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:46:25,711 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:46:25,712 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:46:25,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:46:25,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1812234348, now seen corresponding path program 1 times [2022-01-31 19:46:25,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:46:25,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036634233] [2022-01-31 19:46:25,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:46:25,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:46:25,805 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:46:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:25,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:46:25,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:25,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:46:25,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:25,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:46:25,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:25,958 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 19:46:25,959 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:46:25,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036634233] [2022-01-31 19:46:25,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2036634233] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:46:25,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:46:25,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 19:46:25,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951590452] [2022-01-31 19:46:25,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:46:25,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 19:46:25,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:46:25,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 19:46:25,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 19:46:25,987 INFO L87 Difference]: Start difference. First operand has 34 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 23 states have internal predecessors, (29), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 19:46:26,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:46:26,052 INFO L93 Difference]: Finished difference Result 61 states and 78 transitions. [2022-01-31 19:46:26,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 19:46:26,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2022-01-31 19:46:26,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:46:26,059 INFO L225 Difference]: With dead ends: 61 [2022-01-31 19:46:26,059 INFO L226 Difference]: Without dead ends: 29 [2022-01-31 19:46:26,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 19:46:26,066 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 22 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:46:26,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 36 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 19:46:26,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-01-31 19:46:26,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-01-31 19:46:26,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 19:46:26,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2022-01-31 19:46:26,100 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 25 [2022-01-31 19:46:26,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:46:26,101 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2022-01-31 19:46:26,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 19:46:26,101 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2022-01-31 19:46:26,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-31 19:46:26,102 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:46:26,103 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:46:26,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 19:46:26,103 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:46:26,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:46:26,105 INFO L85 PathProgramCache]: Analyzing trace with hash 924951024, now seen corresponding path program 1 times [2022-01-31 19:46:26,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:46:26,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509548757] [2022-01-31 19:46:26,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:46:26,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:46:26,109 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:46:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:26,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:46:26,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:26,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:46:26,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:26,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:46:26,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:26,237 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 19:46:26,237 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:46:26,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509548757] [2022-01-31 19:46:26,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [509548757] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:46:26,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:46:26,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 19:46:26,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420466247] [2022-01-31 19:46:26,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:46:26,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 19:46:26,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:46:26,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 19:46:26,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-31 19:46:26,241 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-31 19:46:26,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:46:26,363 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2022-01-31 19:46:26,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 19:46:26,364 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2022-01-31 19:46:26,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:46:26,365 INFO L225 Difference]: With dead ends: 49 [2022-01-31 19:46:26,365 INFO L226 Difference]: Without dead ends: 37 [2022-01-31 19:46:26,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-31 19:46:26,366 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 31 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:46:26,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 34 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:46:26,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-01-31 19:46:26,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2022-01-31 19:46:26,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 19:46:26,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-01-31 19:46:26,374 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2022-01-31 19:46:26,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:46:26,375 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-01-31 19:46:26,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-31 19:46:26,377 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-01-31 19:46:26,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-31 19:46:26,378 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:46:26,378 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:46:26,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 19:46:26,379 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:46:26,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:46:26,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1597034047, now seen corresponding path program 1 times [2022-01-31 19:46:26,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:46:26,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38458436] [2022-01-31 19:46:26,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:46:26,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:46:26,384 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:46:26,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:26,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:46:26,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:26,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:46:26,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:26,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:46:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:26,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:46:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:26,546 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-31 19:46:26,547 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:46:26,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38458436] [2022-01-31 19:46:26,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [38458436] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:46:26,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:46:26,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 19:46:26,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507673645] [2022-01-31 19:46:26,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:46:26,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 19:46:26,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:46:26,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 19:46:26,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-01-31 19:46:26,549 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:46:26,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:46:26,819 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2022-01-31 19:46:26,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-31 19:46:26,819 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2022-01-31 19:46:26,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:46:26,820 INFO L225 Difference]: With dead ends: 55 [2022-01-31 19:46:26,820 INFO L226 Difference]: Without dead ends: 53 [2022-01-31 19:46:26,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2022-01-31 19:46:26,822 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 71 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:46:26,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 68 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:46:26,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-01-31 19:46:26,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 41. [2022-01-31 19:46:26,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 29 states have internal predecessors, (31), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 19:46:26,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2022-01-31 19:46:26,841 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 33 [2022-01-31 19:46:26,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:46:26,841 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2022-01-31 19:46:26,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:46:26,842 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2022-01-31 19:46:26,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-31 19:46:26,843 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:46:26,843 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:46:26,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 19:46:26,843 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:46:26,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:46:26,843 INFO L85 PathProgramCache]: Analyzing trace with hash -982525171, now seen corresponding path program 1 times [2022-01-31 19:46:26,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:46:26,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066156273] [2022-01-31 19:46:26,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:46:26,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:46:26,845 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:46:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:26,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:46:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:26,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:46:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:26,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:46:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:26,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:46:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:26,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 19:46:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:26,930 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-31 19:46:26,930 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:46:26,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066156273] [2022-01-31 19:46:26,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2066156273] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:46:26,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:46:26,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 19:46:26,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676255125] [2022-01-31 19:46:26,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:46:26,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 19:46:26,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:46:26,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 19:46:26,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-31 19:46:26,932 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 4 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-31 19:46:27,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:46:27,059 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2022-01-31 19:46:27,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 19:46:27,060 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 4 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 41 [2022-01-31 19:46:27,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:46:27,061 INFO L225 Difference]: With dead ends: 65 [2022-01-31 19:46:27,061 INFO L226 Difference]: Without dead ends: 45 [2022-01-31 19:46:27,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-01-31 19:46:27,062 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 45 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:46:27,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 44 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:46:27,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-01-31 19:46:27,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 34. [2022-01-31 19:46:27,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 states have internal predecessors, (25), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 19:46:27,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2022-01-31 19:46:27,068 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 41 [2022-01-31 19:46:27,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:46:27,068 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2022-01-31 19:46:27,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 4 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-31 19:46:27,068 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2022-01-31 19:46:27,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-31 19:46:27,069 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:46:27,069 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:46:27,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-31 19:46:27,069 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:46:27,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:46:27,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1938670706, now seen corresponding path program 2 times [2022-01-31 19:46:27,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:46:27,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014830440] [2022-01-31 19:46:27,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:46:27,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:46:27,071 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:46:27,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:27,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:46:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:27,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:46:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:27,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:46:27,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:27,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:46:27,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:27,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:46:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:27,251 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-31 19:46:27,251 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:46:27,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014830440] [2022-01-31 19:46:27,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1014830440] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:46:27,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:46:27,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-31 19:46:27,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20297969] [2022-01-31 19:46:27,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:46:27,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-31 19:46:27,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:46:27,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-31 19:46:27,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-31 19:46:27,253 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 10 states have internal predecessors, (23), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-31 19:46:27,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:46:27,624 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2022-01-31 19:46:27,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-31 19:46:27,625 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 10 states have internal predecessors, (23), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 41 [2022-01-31 19:46:27,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:46:27,625 INFO L225 Difference]: With dead ends: 63 [2022-01-31 19:46:27,626 INFO L226 Difference]: Without dead ends: 61 [2022-01-31 19:46:27,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2022-01-31 19:46:27,627 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 85 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:46:27,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 72 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:46:27,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-01-31 19:46:27,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 45. [2022-01-31 19:46:27,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 31 states have (on average 1.096774193548387) internal successors, (34), 32 states have internal predecessors, (34), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-31 19:46:27,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2022-01-31 19:46:27,636 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 41 [2022-01-31 19:46:27,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:46:27,636 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2022-01-31 19:46:27,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 10 states have internal predecessors, (23), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-31 19:46:27,636 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2022-01-31 19:46:27,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-31 19:46:27,637 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:46:27,637 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:46:27,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-31 19:46:27,637 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:46:27,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:46:27,638 INFO L85 PathProgramCache]: Analyzing trace with hash 101878108, now seen corresponding path program 2 times [2022-01-31 19:46:27,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:46:27,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608586093] [2022-01-31 19:46:27,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:46:27,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:46:27,639 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:46:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:27,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:46:27,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:27,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:46:27,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:27,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:46:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:27,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:46:27,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:27,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:46:27,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:27,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-31 19:46:27,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:27,809 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-31 19:46:27,809 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:46:27,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608586093] [2022-01-31 19:46:27,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1608586093] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:46:27,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:46:27,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-31 19:46:27,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355096391] [2022-01-31 19:46:27,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:46:27,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-31 19:46:27,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:46:27,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-31 19:46:27,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-01-31 19:46:27,811 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 12 states have internal predecessors, (29), 5 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-01-31 19:46:28,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:46:28,232 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2022-01-31 19:46:28,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-31 19:46:28,232 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 12 states have internal predecessors, (29), 5 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 49 [2022-01-31 19:46:28,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:46:28,233 INFO L225 Difference]: With dead ends: 71 [2022-01-31 19:46:28,233 INFO L226 Difference]: Without dead ends: 69 [2022-01-31 19:46:28,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=733, Unknown=0, NotChecked=0, Total=870 [2022-01-31 19:46:28,234 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 89 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:46:28,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 81 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:46:28,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-01-31 19:46:28,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 53. [2022-01-31 19:46:28,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 38 states have internal predecessors, (40), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 19:46:28,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2022-01-31 19:46:28,244 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 49 [2022-01-31 19:46:28,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:46:28,245 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2022-01-31 19:46:28,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 12 states have internal predecessors, (29), 5 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-01-31 19:46:28,245 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2022-01-31 19:46:28,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-31 19:46:28,246 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:46:28,246 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:46:28,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-31 19:46:28,246 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:46:28,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:46:28,246 INFO L85 PathProgramCache]: Analyzing trace with hash -854267427, now seen corresponding path program 3 times [2022-01-31 19:46:28,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:46:28,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985972716] [2022-01-31 19:46:28,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:46:28,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:46:28,248 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:46:28,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:28,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:46:28,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:28,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:46:28,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:28,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:46:28,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:28,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:46:28,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:28,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:46:28,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:28,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:46:28,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:28,416 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-31 19:46:28,416 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:46:28,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985972716] [2022-01-31 19:46:28,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [985972716] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:46:28,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:46:28,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-31 19:46:28,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956280310] [2022-01-31 19:46:28,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:46:28,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 19:46:28,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:46:28,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 19:46:28,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-01-31 19:46:28,417 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand has 15 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-01-31 19:46:28,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:46:28,672 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2022-01-31 19:46:28,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-31 19:46:28,672 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 49 [2022-01-31 19:46:28,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:46:28,674 INFO L225 Difference]: With dead ends: 63 [2022-01-31 19:46:28,674 INFO L226 Difference]: Without dead ends: 61 [2022-01-31 19:46:28,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2022-01-31 19:46:28,675 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 55 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:46:28,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 68 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:46:28,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-01-31 19:46:28,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 53. [2022-01-31 19:46:28,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 38 states have internal predecessors, (40), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 19:46:28,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2022-01-31 19:46:28,696 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 49 [2022-01-31 19:46:28,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:46:28,696 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2022-01-31 19:46:28,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-01-31 19:46:28,696 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2022-01-31 19:46:28,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-31 19:46:28,697 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:46:28,697 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:46:28,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-31 19:46:28,697 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:46:28,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:46:28,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1004066518, now seen corresponding path program 3 times [2022-01-31 19:46:28,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:46:28,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988503734] [2022-01-31 19:46:28,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:46:28,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:46:28,699 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:46:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:28,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:46:28,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:28,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:46:28,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:28,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:46:28,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:28,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:46:28,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:28,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:46:28,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:28,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-31 19:46:28,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:28,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 19:46:28,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:28,789 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-31 19:46:28,790 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:46:28,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988503734] [2022-01-31 19:46:28,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [988503734] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:46:28,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:46:28,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-31 19:46:28,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572111442] [2022-01-31 19:46:28,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:46:28,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 19:46:28,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:46:28,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 19:46:28,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-01-31 19:46:28,791 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 6 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-01-31 19:46:28,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:46:28,989 INFO L93 Difference]: Finished difference Result 81 states and 91 transitions. [2022-01-31 19:46:28,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-31 19:46:28,990 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 6 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 57 [2022-01-31 19:46:28,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:46:28,992 INFO L225 Difference]: With dead ends: 81 [2022-01-31 19:46:28,992 INFO L226 Difference]: Without dead ends: 57 [2022-01-31 19:46:28,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2022-01-31 19:46:28,994 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 71 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:46:28,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 46 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:46:28,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-01-31 19:46:29,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 44. [2022-01-31 19:46:29,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 31 states have internal predecessors, (32), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-31 19:46:29,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2022-01-31 19:46:29,012 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 57 [2022-01-31 19:46:29,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:46:29,016 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2022-01-31 19:46:29,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 6 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-01-31 19:46:29,017 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2022-01-31 19:46:29,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-31 19:46:29,019 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:46:29,019 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:46:29,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-31 19:46:29,019 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:46:29,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:46:29,020 INFO L85 PathProgramCache]: Analyzing trace with hash -918194005, now seen corresponding path program 4 times [2022-01-31 19:46:29,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:46:29,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505617739] [2022-01-31 19:46:29,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:46:29,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:46:29,024 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:46:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:29,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:46:29,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:29,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:46:29,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:29,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:46:29,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:29,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:46:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:29,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:46:29,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:29,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:46:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:29,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 19:46:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:29,297 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-31 19:46:29,298 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:46:29,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505617739] [2022-01-31 19:46:29,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [505617739] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:46:29,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:46:29,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-31 19:46:29,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161298060] [2022-01-31 19:46:29,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:46:29,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-31 19:46:29,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:46:29,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-31 19:46:29,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2022-01-31 19:46:29,299 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 17 states, 16 states have (on average 2.0) internal successors, (32), 13 states have internal predecessors, (32), 6 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-01-31 19:46:29,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:46:29,724 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2022-01-31 19:46:29,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-31 19:46:29,725 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.0) internal successors, (32), 13 states have internal predecessors, (32), 6 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) Word has length 57 [2022-01-31 19:46:29,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:46:29,725 INFO L225 Difference]: With dead ends: 79 [2022-01-31 19:46:29,725 INFO L226 Difference]: Without dead ends: 77 [2022-01-31 19:46:29,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=151, Invalid=841, Unknown=0, NotChecked=0, Total=992 [2022-01-31 19:46:29,726 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 96 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:46:29,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 81 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:46:29,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-01-31 19:46:29,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 59. [2022-01-31 19:46:29,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 43 states have internal predecessors, (44), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-31 19:46:29,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2022-01-31 19:46:29,736 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 57 [2022-01-31 19:46:29,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:46:29,736 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2022-01-31 19:46:29,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.0) internal successors, (32), 13 states have internal predecessors, (32), 6 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-01-31 19:46:29,736 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2022-01-31 19:46:29,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-31 19:46:29,737 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:46:29,737 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:46:29,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-31 19:46:29,737 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:46:29,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:46:29,737 INFO L85 PathProgramCache]: Analyzing trace with hash -635872903, now seen corresponding path program 5 times [2022-01-31 19:46:29,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:46:29,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900556] [2022-01-31 19:46:29,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:46:29,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:46:29,739 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:46:29,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:29,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:46:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:29,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:46:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:29,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:46:29,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:30,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:46:30,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:30,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:46:30,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:30,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:46:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:30,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 19:46:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:30,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 19:46:30,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:30,022 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-31 19:46:30,022 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:46:30,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900556] [2022-01-31 19:46:30,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1900556] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:46:30,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:46:30,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-31 19:46:30,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255631711] [2022-01-31 19:46:30,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:46:30,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-31 19:46:30,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:46:30,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-31 19:46:30,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2022-01-31 19:46:30,024 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand has 20 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 16 states have internal predecessors, (35), 8 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:46:30,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:46:30,628 INFO L93 Difference]: Finished difference Result 84 states and 95 transitions. [2022-01-31 19:46:30,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-31 19:46:30,628 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 16 states have internal predecessors, (35), 8 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 65 [2022-01-31 19:46:30,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:46:30,629 INFO L225 Difference]: With dead ends: 84 [2022-01-31 19:46:30,629 INFO L226 Difference]: Without dead ends: 60 [2022-01-31 19:46:30,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=232, Invalid=1250, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 19:46:30,630 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 123 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:46:30,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 70 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:46:30,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-01-31 19:46:30,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 48. [2022-01-31 19:46:30,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 34 states have internal predecessors, (35), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 19:46:30,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2022-01-31 19:46:30,638 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 65 [2022-01-31 19:46:30,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:46:30,638 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2022-01-31 19:46:30,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 16 states have internal predecessors, (35), 8 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:46:30,638 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2022-01-31 19:46:30,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-31 19:46:30,639 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:46:30,639 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:46:30,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-31 19:46:30,639 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:46:30,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:46:30,639 INFO L85 PathProgramCache]: Analyzing trace with hash -550000390, now seen corresponding path program 6 times [2022-01-31 19:46:30,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:46:30,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529328431] [2022-01-31 19:46:30,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:46:30,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:46:30,640 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:46:30,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:30,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:46:30,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:30,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:46:30,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:30,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:46:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:30,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:46:30,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:30,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:46:30,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:30,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:46:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:30,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:46:30,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:30,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 19:46:30,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:30,855 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-31 19:46:30,855 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:46:30,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529328431] [2022-01-31 19:46:30,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1529328431] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:46:30,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:46:30,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-31 19:46:30,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045466006] [2022-01-31 19:46:30,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:46:30,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-31 19:46:30,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:46:30,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-31 19:46:30,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2022-01-31 19:46:30,857 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand has 18 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 14 states have internal predecessors, (35), 7 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2022-01-31 19:46:31,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:46:31,209 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2022-01-31 19:46:31,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-31 19:46:31,209 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 14 states have internal predecessors, (35), 7 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) Word has length 65 [2022-01-31 19:46:31,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:46:31,210 INFO L225 Difference]: With dead ends: 60 [2022-01-31 19:46:31,210 INFO L226 Difference]: Without dead ends: 58 [2022-01-31 19:46:31,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=848, Unknown=0, NotChecked=0, Total=992 [2022-01-31 19:46:31,211 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 60 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:46:31,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 81 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:46:31,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-01-31 19:46:31,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2022-01-31 19:46:31,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 40 states have internal predecessors, (41), 11 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-01-31 19:46:31,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions. [2022-01-31 19:46:31,219 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 65 [2022-01-31 19:46:31,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:46:31,219 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 62 transitions. [2022-01-31 19:46:31,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 14 states have internal predecessors, (35), 7 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2022-01-31 19:46:31,219 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 62 transitions. [2022-01-31 19:46:31,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-31 19:46:31,220 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:46:31,220 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:46:31,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-31 19:46:31,220 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:46:31,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:46:31,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1945750216, now seen corresponding path program 7 times [2022-01-31 19:46:31,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:46:31,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727247765] [2022-01-31 19:46:31,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:46:31,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:46:31,222 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:46:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:31,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:46:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:31,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:46:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:31,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:46:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:31,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:46:31,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:31,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:46:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:31,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:46:31,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:31,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:46:31,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:31,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 19:46:31,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:31,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 19:46:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:31,508 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-31 19:46:31,508 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:46:31,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727247765] [2022-01-31 19:46:31,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1727247765] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:46:31,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:46:31,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-31 19:46:31,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687791611] [2022-01-31 19:46:31,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:46:31,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-31 19:46:31,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:46:31,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-31 19:46:31,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2022-01-31 19:46:31,509 INFO L87 Difference]: Start difference. First operand 56 states and 62 transitions. Second operand has 19 states, 17 states have (on average 2.235294117647059) internal successors, (38), 15 states have internal predecessors, (38), 9 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 19:46:32,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:46:32,043 INFO L93 Difference]: Finished difference Result 95 states and 109 transitions. [2022-01-31 19:46:32,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-31 19:46:32,043 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.235294117647059) internal successors, (38), 15 states have internal predecessors, (38), 9 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 73 [2022-01-31 19:46:32,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:46:32,044 INFO L225 Difference]: With dead ends: 95 [2022-01-31 19:46:32,044 INFO L226 Difference]: Without dead ends: 93 [2022-01-31 19:46:32,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=1122, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 19:46:32,045 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 113 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:46:32,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 85 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:46:32,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-01-31 19:46:32,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 75. [2022-01-31 19:46:32,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 55 states have internal predecessors, (56), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-01-31 19:46:32,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2022-01-31 19:46:32,058 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 73 [2022-01-31 19:46:32,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:46:32,058 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2022-01-31 19:46:32,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.235294117647059) internal successors, (38), 15 states have internal predecessors, (38), 9 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 19:46:32,058 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2022-01-31 19:46:32,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-31 19:46:32,058 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:46:32,059 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:46:32,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-31 19:46:32,059 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:46:32,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:46:32,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1209810582, now seen corresponding path program 8 times [2022-01-31 19:46:32,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:46:32,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640772307] [2022-01-31 19:46:32,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:46:32,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:46:32,060 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:46:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:32,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:46:32,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:32,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:46:32,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:32,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:46:32,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:32,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:46:32,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:32,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:46:32,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:32,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:46:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:32,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:46:32,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:32,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 19:46:32,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:32,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 19:46:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:32,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 19:46:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:32,269 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-31 19:46:32,269 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:46:32,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640772307] [2022-01-31 19:46:32,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1640772307] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:46:32,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:46:32,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-31 19:46:32,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010357008] [2022-01-31 19:46:32,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:46:32,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-31 19:46:32,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:46:32,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-31 19:46:32,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2022-01-31 19:46:32,270 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand has 20 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 16 states have internal predecessors, (41), 9 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2022-01-31 19:46:32,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:46:32,917 INFO L93 Difference]: Finished difference Result 103 states and 117 transitions. [2022-01-31 19:46:32,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-31 19:46:32,918 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 16 states have internal predecessors, (41), 9 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) Word has length 81 [2022-01-31 19:46:32,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:46:32,919 INFO L225 Difference]: With dead ends: 103 [2022-01-31 19:46:32,919 INFO L226 Difference]: Without dead ends: 101 [2022-01-31 19:46:32,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=179, Invalid=1227, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 19:46:32,920 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 113 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 19:46:32,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 102 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 19:46:32,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-01-31 19:46:32,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 83. [2022-01-31 19:46:32,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 61 states have internal predecessors, (62), 16 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2022-01-31 19:46:32,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2022-01-31 19:46:32,933 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 81 [2022-01-31 19:46:32,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:46:32,934 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2022-01-31 19:46:32,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 16 states have internal predecessors, (41), 9 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2022-01-31 19:46:32,934 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2022-01-31 19:46:32,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-31 19:46:32,934 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:46:32,934 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:46:32,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-31 19:46:32,934 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:46:32,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:46:32,935 INFO L85 PathProgramCache]: Analyzing trace with hash 603421975, now seen corresponding path program 9 times [2022-01-31 19:46:32,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:46:32,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473390252] [2022-01-31 19:46:32,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:46:32,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:46:32,936 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:46:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:33,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:46:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:33,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:46:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:33,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:46:33,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:33,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:46:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:33,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:46:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:33,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:46:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:33,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:46:33,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:33,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:46:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:33,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 19:46:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:33,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 19:46:33,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:33,223 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-01-31 19:46:33,223 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:46:33,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473390252] [2022-01-31 19:46:33,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1473390252] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:46:33,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:46:33,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-31 19:46:33,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179094194] [2022-01-31 19:46:33,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:46:33,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-31 19:46:33,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:46:33,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-31 19:46:33,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2022-01-31 19:46:33,225 INFO L87 Difference]: Start difference. First operand 83 states and 93 transitions. Second operand has 21 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 17 states have internal predecessors, (41), 10 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-01-31 19:46:33,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:46:33,688 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2022-01-31 19:46:33,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-31 19:46:33,688 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 17 states have internal predecessors, (41), 10 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) Word has length 81 [2022-01-31 19:46:33,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:46:33,689 INFO L225 Difference]: With dead ends: 95 [2022-01-31 19:46:33,689 INFO L226 Difference]: Without dead ends: 93 [2022-01-31 19:46:33,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=207, Invalid=1199, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 19:46:33,690 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 82 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:46:33,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 86 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:46:33,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-01-31 19:46:33,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2022-01-31 19:46:33,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 61 states have internal predecessors, (62), 16 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2022-01-31 19:46:33,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2022-01-31 19:46:33,714 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 81 [2022-01-31 19:46:33,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:46:33,714 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2022-01-31 19:46:33,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 17 states have internal predecessors, (41), 10 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-01-31 19:46:33,714 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2022-01-31 19:46:33,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-31 19:46:33,715 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:46:33,715 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:46:33,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-31 19:46:33,715 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:46:33,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:46:33,715 INFO L85 PathProgramCache]: Analyzing trace with hash -416480156, now seen corresponding path program 10 times [2022-01-31 19:46:33,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:46:33,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583236847] [2022-01-31 19:46:33,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:46:33,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:46:33,717 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:46:33,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:33,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:46:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:33,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:46:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:33,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:46:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:33,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:46:33,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:33,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:46:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:33,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:46:33,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:33,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:46:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:33,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 19:46:33,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:33,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 19:46:33,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:33,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 19:46:33,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:33,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 19:46:33,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:33,849 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-31 19:46:33,850 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:46:33,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583236847] [2022-01-31 19:46:33,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [583236847] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:46:33,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:46:33,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-31 19:46:33,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346320604] [2022-01-31 19:46:33,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:46:33,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-31 19:46:33,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:46:33,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-31 19:46:33,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-01-31 19:46:33,851 INFO L87 Difference]: Start difference. First operand 83 states and 93 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 10 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2022-01-31 19:46:34,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:46:34,176 INFO L93 Difference]: Finished difference Result 113 states and 127 transitions. [2022-01-31 19:46:34,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-31 19:46:34,177 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 10 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) Word has length 89 [2022-01-31 19:46:34,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:46:34,177 INFO L225 Difference]: With dead ends: 113 [2022-01-31 19:46:34,177 INFO L226 Difference]: Without dead ends: 81 [2022-01-31 19:46:34,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2022-01-31 19:46:34,178 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 119 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:46:34,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 50 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:46:34,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-01-31 19:46:34,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 68. [2022-01-31 19:46:34,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 49 states have internal predecessors, (50), 13 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-31 19:46:34,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 75 transitions. [2022-01-31 19:46:34,193 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 75 transitions. Word has length 89 [2022-01-31 19:46:34,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:46:34,193 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 75 transitions. [2022-01-31 19:46:34,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 10 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2022-01-31 19:46:34,193 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 75 transitions. [2022-01-31 19:46:34,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-31 19:46:34,194 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:46:34,194 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:46:34,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-31 19:46:34,194 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:46:34,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:46:34,194 INFO L85 PathProgramCache]: Analyzing trace with hash 23474661, now seen corresponding path program 11 times [2022-01-31 19:46:34,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:46:34,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572452291] [2022-01-31 19:46:34,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:46:34,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:46:34,195 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:46:34,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:34,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:46:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:34,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:46:34,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:34,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:46:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:34,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:46:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:34,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:46:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:34,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:46:34,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:34,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:46:34,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:34,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:46:34,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:34,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 19:46:34,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:34,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 19:46:34,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:34,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 19:46:34,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:34,455 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-01-31 19:46:34,456 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:46:34,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572452291] [2022-01-31 19:46:34,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [572452291] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:46:34,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:46:34,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-31 19:46:34,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105428802] [2022-01-31 19:46:34,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:46:34,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-31 19:46:34,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:46:34,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-31 19:46:34,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2022-01-31 19:46:34,457 INFO L87 Difference]: Start difference. First operand 68 states and 75 transitions. Second operand has 22 states, 20 states have (on average 2.2) internal successors, (44), 18 states have internal predecessors, (44), 10 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 10 states have call predecessors, (11), 9 states have call successors, (11) [2022-01-31 19:46:35,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:46:35,179 INFO L93 Difference]: Finished difference Result 111 states and 127 transitions. [2022-01-31 19:46:35,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-31 19:46:35,179 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.2) internal successors, (44), 18 states have internal predecessors, (44), 10 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 10 states have call predecessors, (11), 9 states have call successors, (11) Word has length 89 [2022-01-31 19:46:35,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:46:35,180 INFO L225 Difference]: With dead ends: 111 [2022-01-31 19:46:35,180 INFO L226 Difference]: Without dead ends: 109 [2022-01-31 19:46:35,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=205, Invalid=1435, Unknown=0, NotChecked=0, Total=1640 [2022-01-31 19:46:35,181 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 145 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 19:46:35,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 95 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 19:46:35,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-01-31 19:46:35,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 91. [2022-01-31 19:46:35,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 65 states have (on average 1.0461538461538462) internal successors, (68), 67 states have internal predecessors, (68), 18 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2022-01-31 19:46:35,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 103 transitions. [2022-01-31 19:46:35,200 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 103 transitions. Word has length 89 [2022-01-31 19:46:35,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:46:35,200 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 103 transitions. [2022-01-31 19:46:35,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.2) internal successors, (44), 18 states have internal predecessors, (44), 10 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 10 states have call predecessors, (11), 9 states have call successors, (11) [2022-01-31 19:46:35,200 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 103 transitions. [2022-01-31 19:46:35,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-31 19:46:35,201 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:46:35,201 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:46:35,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-31 19:46:35,201 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:46:35,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:46:35,201 INFO L85 PathProgramCache]: Analyzing trace with hash -34457421, now seen corresponding path program 12 times [2022-01-31 19:46:35,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:46:35,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028259084] [2022-01-31 19:46:35,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:46:35,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:46:35,203 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:46:35,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:35,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:46:35,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:35,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:46:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:35,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:46:35,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:35,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:46:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:35,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:46:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:35,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:46:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:35,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:46:35,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:35,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:46:35,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:35,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 19:46:35,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:35,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 19:46:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:35,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 19:46:35,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:35,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 19:46:35,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:35,463 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 18 proven. 12 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-01-31 19:46:35,463 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:46:35,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028259084] [2022-01-31 19:46:35,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1028259084] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:46:35,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:46:35,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-31 19:46:35,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712055102] [2022-01-31 19:46:35,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:46:35,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-31 19:46:35,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:46:35,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-31 19:46:35,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2022-01-31 19:46:35,464 INFO L87 Difference]: Start difference. First operand 91 states and 103 transitions. Second operand has 22 states, 21 states have (on average 2.238095238095238) internal successors, (47), 18 states have internal predecessors, (47), 11 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2022-01-31 19:46:36,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:46:36,319 INFO L93 Difference]: Finished difference Result 119 states and 135 transitions. [2022-01-31 19:46:36,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-31 19:46:36,320 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.238095238095238) internal successors, (47), 18 states have internal predecessors, (47), 11 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) Word has length 97 [2022-01-31 19:46:36,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:46:36,321 INFO L225 Difference]: With dead ends: 119 [2022-01-31 19:46:36,321 INFO L226 Difference]: Without dead ends: 117 [2022-01-31 19:46:36,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=200, Invalid=1522, Unknown=0, NotChecked=0, Total=1722 [2022-01-31 19:46:36,322 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 132 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 19:46:36,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 109 Invalid, 1428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 19:46:36,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-01-31 19:46:36,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 99. [2022-01-31 19:46:36,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 73 states have internal predecessors, (74), 19 states have call successors, (19), 9 states have call predecessors, (19), 8 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2022-01-31 19:46:36,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2022-01-31 19:46:36,342 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 97 [2022-01-31 19:46:36,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:46:36,342 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2022-01-31 19:46:36,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.238095238095238) internal successors, (47), 18 states have internal predecessors, (47), 11 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2022-01-31 19:46:36,342 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2022-01-31 19:46:36,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-31 19:46:36,343 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:46:36,343 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:46:36,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-31 19:46:36,343 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:46:36,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:46:36,344 INFO L85 PathProgramCache]: Analyzing trace with hash 405497396, now seen corresponding path program 13 times [2022-01-31 19:46:36,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:46:36,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822704150] [2022-01-31 19:46:36,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:46:36,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:46:36,345 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:46:36,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:36,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:46:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:36,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:46:36,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:36,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:46:36,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:36,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:46:36,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:36,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:46:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:36,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:46:36,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:36,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:46:36,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:36,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:46:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:36,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:46:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:36,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 19:46:36,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:36,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 19:46:36,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:36,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 19:46:36,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:36,662 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-01-31 19:46:36,662 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:46:36,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822704150] [2022-01-31 19:46:36,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1822704150] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:46:36,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:46:36,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-01-31 19:46:36,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643711110] [2022-01-31 19:46:36,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:46:36,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-31 19:46:36,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:46:36,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-31 19:46:36,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-01-31 19:46:36,663 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand has 23 states, 21 states have (on average 2.238095238095238) internal successors, (47), 19 states have internal predecessors, (47), 11 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2022-01-31 19:46:37,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:46:37,273 INFO L93 Difference]: Finished difference Result 111 states and 123 transitions. [2022-01-31 19:46:37,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-31 19:46:37,273 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.238095238095238) internal successors, (47), 19 states have internal predecessors, (47), 11 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) Word has length 97 [2022-01-31 19:46:37,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:46:37,274 INFO L225 Difference]: With dead ends: 111 [2022-01-31 19:46:37,274 INFO L226 Difference]: Without dead ends: 109 [2022-01-31 19:46:37,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=194, Invalid=1446, Unknown=0, NotChecked=0, Total=1640 [2022-01-31 19:46:37,275 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 78 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 19:46:37,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 115 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 19:46:37,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-01-31 19:46:37,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 99. [2022-01-31 19:46:37,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 73 states have internal predecessors, (74), 19 states have call successors, (19), 9 states have call predecessors, (19), 8 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2022-01-31 19:46:37,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2022-01-31 19:46:37,298 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 97 [2022-01-31 19:46:37,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:46:37,298 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2022-01-31 19:46:37,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.238095238095238) internal successors, (47), 19 states have internal predecessors, (47), 11 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2022-01-31 19:46:37,299 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2022-01-31 19:46:37,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-31 19:46:37,299 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:46:37,299 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:46:37,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-31 19:46:37,299 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:46:37,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:46:37,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1742106239, now seen corresponding path program 14 times [2022-01-31 19:46:37,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:46:37,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258247112] [2022-01-31 19:46:37,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:46:37,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:46:37,301 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:46:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:37,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:46:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:37,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:46:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:37,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:46:37,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:37,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:46:37,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:37,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:46:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:37,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:46:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:37,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:46:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:37,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:46:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:37,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 19:46:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:37,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 19:46:37,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:37,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 19:46:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:37,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 19:46:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:37,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 19:46:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:37,429 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 19:46:37,429 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:46:37,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258247112] [2022-01-31 19:46:37,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [258247112] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:46:37,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:46:37,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-31 19:46:37,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334664715] [2022-01-31 19:46:37,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:46:37,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-31 19:46:37,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:46:37,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-31 19:46:37,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-01-31 19:46:37,430 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 12 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 11 states have call predecessors, (13), 11 states have call successors, (13) [2022-01-31 19:46:37,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:46:37,739 INFO L93 Difference]: Finished difference Result 129 states and 145 transitions. [2022-01-31 19:46:37,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-31 19:46:37,740 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 12 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 11 states have call predecessors, (13), 11 states have call successors, (13) Word has length 105 [2022-01-31 19:46:37,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:46:37,742 INFO L225 Difference]: With dead ends: 129 [2022-01-31 19:46:37,742 INFO L226 Difference]: Without dead ends: 93 [2022-01-31 19:46:37,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=206, Invalid=606, Unknown=0, NotChecked=0, Total=812 [2022-01-31 19:46:37,743 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 137 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:46:37,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 62 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:46:37,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-01-31 19:46:37,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 80. [2022-01-31 19:46:37,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 58 states have internal predecessors, (59), 15 states have call successors, (15), 8 states have call predecessors, (15), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-01-31 19:46:37,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2022-01-31 19:46:37,758 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 105 [2022-01-31 19:46:37,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:46:37,758 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2022-01-31 19:46:37,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 12 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 11 states have call predecessors, (13), 11 states have call successors, (13) [2022-01-31 19:46:37,759 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2022-01-31 19:46:37,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-31 19:46:37,760 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:46:37,760 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:46:37,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-31 19:46:37,760 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:46:37,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:46:37,760 INFO L85 PathProgramCache]: Analyzing trace with hash 660712962, now seen corresponding path program 15 times [2022-01-31 19:46:37,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:46:37,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669945192] [2022-01-31 19:46:37,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:46:37,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:46:37,762 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:46:37,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:38,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:46:38,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:38,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:46:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:38,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:46:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:38,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:46:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:38,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:46:38,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:38,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:46:38,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:38,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:46:38,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:38,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:46:38,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:38,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:46:38,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:38,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 19:46:38,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:38,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 19:46:38,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:38,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 19:46:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:38,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 19:46:38,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:38,085 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-01-31 19:46:38,085 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:46:38,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669945192] [2022-01-31 19:46:38,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [669945192] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:46:38,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:46:38,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-01-31 19:46:38,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110548282] [2022-01-31 19:46:38,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:46:38,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-31 19:46:38,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:46:38,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-31 19:46:38,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=496, Unknown=0, NotChecked=0, Total=552 [2022-01-31 19:46:38,087 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand has 24 states, 22 states have (on average 2.272727272727273) internal successors, (50), 20 states have internal predecessors, (50), 12 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 12 states have call predecessors, (13), 11 states have call successors, (13) [2022-01-31 19:46:39,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:46:39,039 INFO L93 Difference]: Finished difference Result 127 states and 145 transitions. [2022-01-31 19:46:39,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-31 19:46:39,040 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.272727272727273) internal successors, (50), 20 states have internal predecessors, (50), 12 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 12 states have call predecessors, (13), 11 states have call successors, (13) Word has length 105 [2022-01-31 19:46:39,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:46:39,042 INFO L225 Difference]: With dead ends: 127 [2022-01-31 19:46:39,042 INFO L226 Difference]: Without dead ends: 125 [2022-01-31 19:46:39,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=228, Invalid=1752, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 19:46:39,044 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 153 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 1535 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 19:46:39,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 115 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1535 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 19:46:39,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-01-31 19:46:39,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 107. [2022-01-31 19:46:39,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 77 states have (on average 1.0389610389610389) internal successors, (80), 79 states have internal predecessors, (80), 21 states have call successors, (21), 9 states have call predecessors, (21), 8 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-31 19:46:39,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 121 transitions. [2022-01-31 19:46:39,075 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 121 transitions. Word has length 105 [2022-01-31 19:46:39,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:46:39,075 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 121 transitions. [2022-01-31 19:46:39,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 2.272727272727273) internal successors, (50), 20 states have internal predecessors, (50), 12 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 12 states have call predecessors, (13), 11 states have call successors, (13) [2022-01-31 19:46:39,075 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 121 transitions. [2022-01-31 19:46:39,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-31 19:46:39,076 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:46:39,076 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:46:39,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-31 19:46:39,076 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:46:39,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:46:39,076 INFO L85 PathProgramCache]: Analyzing trace with hash -361609264, now seen corresponding path program 16 times [2022-01-31 19:46:39,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:46:39,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209423141] [2022-01-31 19:46:39,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:46:39,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:46:39,078 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:46:39,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:39,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:46:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:39,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:46:39,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:39,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:46:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:39,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:46:39,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:39,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:46:39,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:39,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:46:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:39,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:46:39,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:39,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:46:39,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:39,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:46:39,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:39,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 19:46:39,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:39,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 19:46:39,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:39,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 19:46:39,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:39,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 19:46:39,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:39,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 19:46:39,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:39,375 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-01-31 19:46:39,375 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:46:39,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209423141] [2022-01-31 19:46:39,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1209423141] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:46:39,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:46:39,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-01-31 19:46:39,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963012288] [2022-01-31 19:46:39,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:46:39,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-31 19:46:39,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:46:39,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-31 19:46:39,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2022-01-31 19:46:39,377 INFO L87 Difference]: Start difference. First operand 107 states and 121 transitions. Second operand has 24 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 20 states have internal predecessors, (53), 13 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 13 states have call predecessors, (14), 12 states have call successors, (14) [2022-01-31 19:46:40,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:46:40,404 INFO L93 Difference]: Finished difference Result 135 states and 153 transitions. [2022-01-31 19:46:40,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-31 19:46:40,404 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 20 states have internal predecessors, (53), 13 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 13 states have call predecessors, (14), 12 states have call successors, (14) Word has length 113 [2022-01-31 19:46:40,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:46:40,405 INFO L225 Difference]: With dead ends: 135 [2022-01-31 19:46:40,405 INFO L226 Difference]: Without dead ends: 133 [2022-01-31 19:46:40,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=221, Invalid=1849, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 19:46:40,406 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 142 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 1679 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 1813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 19:46:40,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 126 Invalid, 1813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1679 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 19:46:40,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-01-31 19:46:40,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 115. [2022-01-31 19:46:40,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 83 states have (on average 1.036144578313253) internal successors, (86), 85 states have internal predecessors, (86), 22 states have call successors, (22), 10 states have call predecessors, (22), 9 states have return successors, (21), 19 states have call predecessors, (21), 21 states have call successors, (21) [2022-01-31 19:46:40,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 129 transitions. [2022-01-31 19:46:40,446 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 129 transitions. Word has length 113 [2022-01-31 19:46:40,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:46:40,446 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 129 transitions. [2022-01-31 19:46:40,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 20 states have internal predecessors, (53), 13 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 13 states have call predecessors, (14), 12 states have call successors, (14) [2022-01-31 19:46:40,446 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 129 transitions. [2022-01-31 19:46:40,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-31 19:46:40,447 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:46:40,447 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 7, 7, 7, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:46:40,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-31 19:46:40,447 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:46:40,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:46:40,447 INFO L85 PathProgramCache]: Analyzing trace with hash 2041209937, now seen corresponding path program 17 times [2022-01-31 19:46:40,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:46:40,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066106777] [2022-01-31 19:46:40,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:46:40,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:46:40,449 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:46:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:40,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:46:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:40,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:46:40,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:40,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:46:40,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:40,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:46:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:40,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:46:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:40,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:46:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:40,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:46:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:40,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:46:40,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:40,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:46:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:40,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:46:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:40,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 19:46:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:40,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 19:46:40,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:40,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 19:46:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:40,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 19:46:40,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:40,785 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 18 proven. 24 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-01-31 19:46:40,785 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:46:40,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066106777] [2022-01-31 19:46:40,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2066106777] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:46:40,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:46:40,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-01-31 19:46:40,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657917938] [2022-01-31 19:46:40,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:46:40,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-31 19:46:40,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:46:40,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-31 19:46:40,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=495, Unknown=0, NotChecked=0, Total=552 [2022-01-31 19:46:40,786 INFO L87 Difference]: Start difference. First operand 115 states and 129 transitions. Second operand has 24 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 20 states have internal predecessors, (53), 13 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 13 states have call predecessors, (14), 12 states have call successors, (14) [2022-01-31 19:46:41,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:46:41,600 INFO L93 Difference]: Finished difference Result 127 states and 141 transitions. [2022-01-31 19:46:41,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-31 19:46:41,601 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 20 states have internal predecessors, (53), 13 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 13 states have call predecessors, (14), 12 states have call successors, (14) Word has length 113 [2022-01-31 19:46:41,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:46:41,602 INFO L225 Difference]: With dead ends: 127 [2022-01-31 19:46:41,602 INFO L226 Difference]: Without dead ends: 125 [2022-01-31 19:46:41,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=207, Invalid=1685, Unknown=0, NotChecked=0, Total=1892 [2022-01-31 19:46:41,603 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 95 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1312 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 19:46:41,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 107 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1312 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 19:46:41,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-01-31 19:46:41,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 115. [2022-01-31 19:46:41,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 83 states have (on average 1.036144578313253) internal successors, (86), 85 states have internal predecessors, (86), 22 states have call successors, (22), 10 states have call predecessors, (22), 9 states have return successors, (21), 19 states have call predecessors, (21), 21 states have call successors, (21) [2022-01-31 19:46:41,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 129 transitions. [2022-01-31 19:46:41,638 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 129 transitions. Word has length 113 [2022-01-31 19:46:41,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:46:41,638 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 129 transitions. [2022-01-31 19:46:41,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 20 states have internal predecessors, (53), 13 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 13 states have call predecessors, (14), 12 states have call successors, (14) [2022-01-31 19:46:41,638 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 129 transitions. [2022-01-31 19:46:41,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-31 19:46:41,639 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:46:41,639 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:46:41,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-31 19:46:41,640 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:46:41,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:46:41,640 INFO L85 PathProgramCache]: Analyzing trace with hash -756337762, now seen corresponding path program 18 times [2022-01-31 19:46:41,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:46:41,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444200104] [2022-01-31 19:46:41,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:46:41,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:46:41,642 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:46:41,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:41,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:46:41,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:41,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:46:41,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:41,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:46:41,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:41,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:46:41,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:41,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:46:41,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:41,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:46:41,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:41,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:46:41,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:41,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:46:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:41,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:46:41,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:41,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 19:46:41,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:41,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 19:46:41,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:41,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 19:46:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:41,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 19:46:41,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:41,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 19:46:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:41,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 19:46:41,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:41,781 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 19:46:41,781 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:46:41,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444200104] [2022-01-31 19:46:41,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1444200104] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:46:41,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:46:41,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-31 19:46:41,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724153983] [2022-01-31 19:46:41,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:46:41,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-31 19:46:41,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:46:41,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-31 19:46:41,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-01-31 19:46:41,782 INFO L87 Difference]: Start difference. First operand 115 states and 129 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 17 states have internal predecessors, (53), 14 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) [2022-01-31 19:46:42,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:46:42,227 INFO L93 Difference]: Finished difference Result 145 states and 163 transitions. [2022-01-31 19:46:42,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-31 19:46:42,227 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 17 states have internal predecessors, (53), 14 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) Word has length 121 [2022-01-31 19:46:42,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:46:42,228 INFO L225 Difference]: With dead ends: 145 [2022-01-31 19:46:42,228 INFO L226 Difference]: Without dead ends: 105 [2022-01-31 19:46:42,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2022-01-31 19:46:42,232 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 139 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:46:42,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 69 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:46:42,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-01-31 19:46:42,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 92. [2022-01-31 19:46:42,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 67 states have internal predecessors, (68), 17 states have call successors, (17), 9 states have call predecessors, (17), 8 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-01-31 19:46:42,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2022-01-31 19:46:42,253 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 121 [2022-01-31 19:46:42,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:46:42,253 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2022-01-31 19:46:42,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 17 states have internal predecessors, (53), 14 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) [2022-01-31 19:46:42,254 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2022-01-31 19:46:42,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-31 19:46:42,256 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:46:42,256 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:46:42,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-31 19:46:42,256 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:46:42,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:46:42,256 INFO L85 PathProgramCache]: Analyzing trace with hash -591184097, now seen corresponding path program 19 times [2022-01-31 19:46:42,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:46:42,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212633631] [2022-01-31 19:46:42,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:46:42,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:46:42,258 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:46:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:42,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:46:42,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:42,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:46:42,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:42,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:46:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:42,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:46:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:42,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:46:42,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:42,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:46:42,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:42,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:46:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:42,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:46:42,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:42,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:46:42,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:42,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:46:42,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:42,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 19:46:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:42,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 19:46:42,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:42,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 19:46:42,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:42,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 19:46:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:42,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 19:46:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:42,497 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-01-31 19:46:42,497 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:46:42,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212633631] [2022-01-31 19:46:42,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1212633631] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:46:42,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:46:42,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-01-31 19:46:42,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679756784] [2022-01-31 19:46:42,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:46:42,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-31 19:46:42,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:46:42,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-31 19:46:42,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=542, Unknown=0, NotChecked=0, Total=600 [2022-01-31 19:46:42,500 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand has 25 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 21 states have internal predecessors, (56), 14 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 14 states have call predecessors, (15), 13 states have call successors, (15) [2022-01-31 19:46:43,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:46:43,301 INFO L93 Difference]: Finished difference Result 143 states and 163 transitions. [2022-01-31 19:46:43,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-31 19:46:43,301 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 21 states have internal predecessors, (56), 14 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 14 states have call predecessors, (15), 13 states have call successors, (15) Word has length 121 [2022-01-31 19:46:43,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:46:43,302 INFO L225 Difference]: With dead ends: 143 [2022-01-31 19:46:43,302 INFO L226 Difference]: Without dead ends: 141 [2022-01-31 19:46:43,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=243, Invalid=2013, Unknown=0, NotChecked=0, Total=2256 [2022-01-31 19:46:43,303 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 172 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1690 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 1861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 19:46:43,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 115 Invalid, 1861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1690 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 19:46:43,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-01-31 19:46:43,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 123. [2022-01-31 19:46:43,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 89 states have (on average 1.0337078651685394) internal successors, (92), 91 states have internal predecessors, (92), 24 states have call successors, (24), 10 states have call predecessors, (24), 9 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2022-01-31 19:46:43,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 139 transitions. [2022-01-31 19:46:43,338 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 139 transitions. Word has length 121 [2022-01-31 19:46:43,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:46:43,339 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 139 transitions. [2022-01-31 19:46:43,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 21 states have internal predecessors, (56), 14 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 14 states have call predecessors, (15), 13 states have call successors, (15) [2022-01-31 19:46:43,339 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 139 transitions. [2022-01-31 19:46:43,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-31 19:46:43,339 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:46:43,340 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:46:43,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-31 19:46:43,340 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:46:43,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:46:43,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1030974445, now seen corresponding path program 20 times [2022-01-31 19:46:43,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:46:43,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625389110] [2022-01-31 19:46:43,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:46:43,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:46:43,342 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:46:43,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:43,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:46:43,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:43,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:46:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:43,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:46:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:43,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:46:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:43,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:46:43,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:43,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:46:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:43,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:46:43,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:43,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:46:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:43,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:46:43,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:43,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:46:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:43,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 19:46:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:43,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 19:46:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:43,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 19:46:43,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:43,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 19:46:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:43,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 19:46:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:43,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 19:46:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:43,690 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-01-31 19:46:43,690 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:46:43,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625389110] [2022-01-31 19:46:43,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [625389110] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:46:43,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:46:43,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-31 19:46:43,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814365165] [2022-01-31 19:46:43,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:46:43,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-31 19:46:43,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:46:43,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-31 19:46:43,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=591, Unknown=0, NotChecked=0, Total=650 [2022-01-31 19:46:43,691 INFO L87 Difference]: Start difference. First operand 123 states and 139 transitions. Second operand has 26 states, 25 states have (on average 2.36) internal successors, (59), 22 states have internal predecessors, (59), 15 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) [2022-01-31 19:46:44,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:46:44,942 INFO L93 Difference]: Finished difference Result 151 states and 171 transitions. [2022-01-31 19:46:44,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-31 19:46:44,943 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.36) internal successors, (59), 22 states have internal predecessors, (59), 15 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) Word has length 129 [2022-01-31 19:46:44,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:46:44,944 INFO L225 Difference]: With dead ends: 151 [2022-01-31 19:46:44,944 INFO L226 Difference]: Without dead ends: 149 [2022-01-31 19:46:44,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=242, Invalid=2208, Unknown=0, NotChecked=0, Total=2450 [2022-01-31 19:46:44,945 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 154 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 2160 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 2309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 2160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 19:46:44,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 142 Invalid, 2309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 2160 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 19:46:44,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-01-31 19:46:45,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 131. [2022-01-31 19:46:45,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 95 states have (on average 1.0315789473684212) internal successors, (98), 97 states have internal predecessors, (98), 25 states have call successors, (25), 11 states have call predecessors, (25), 10 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-31 19:46:45,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 147 transitions. [2022-01-31 19:46:45,014 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 147 transitions. Word has length 129 [2022-01-31 19:46:45,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:46:45,014 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 147 transitions. [2022-01-31 19:46:45,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.36) internal successors, (59), 22 states have internal predecessors, (59), 15 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) [2022-01-31 19:46:45,015 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 147 transitions. [2022-01-31 19:46:45,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-31 19:46:45,015 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:46:45,015 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:46:45,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-31 19:46:45,016 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:46:45,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:46:45,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1196128110, now seen corresponding path program 21 times [2022-01-31 19:46:45,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:46:45,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [510293902] [2022-01-31 19:46:45,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:46:45,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:46:45,017 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:46:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:45,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:46:45,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:45,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:46:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:45,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:46:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:45,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:46:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:45,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:46:45,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:45,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:46:45,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:45,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:46:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:45,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:46:45,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:45,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:46:45,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:45,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:46:45,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:45,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:46:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:45,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 19:46:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:45,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 19:46:45,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:45,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 19:46:45,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:45,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 19:46:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:45,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 19:46:45,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:45,335 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 21 proven. 27 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-01-31 19:46:45,335 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:46:45,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [510293902] [2022-01-31 19:46:45,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [510293902] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:46:45,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:46:45,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-31 19:46:45,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902275738] [2022-01-31 19:46:45,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:46:45,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-31 19:46:45,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:46:45,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-31 19:46:45,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=588, Unknown=0, NotChecked=0, Total=650 [2022-01-31 19:46:45,336 INFO L87 Difference]: Start difference. First operand 131 states and 147 transitions. Second operand has 26 states, 25 states have (on average 2.36) internal successors, (59), 22 states have internal predecessors, (59), 15 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) [2022-01-31 19:46:46,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:46:46,292 INFO L93 Difference]: Finished difference Result 143 states and 159 transitions. [2022-01-31 19:46:46,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-31 19:46:46,292 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.36) internal successors, (59), 22 states have internal predecessors, (59), 15 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) Word has length 129 [2022-01-31 19:46:46,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:46:46,293 INFO L225 Difference]: With dead ends: 143 [2022-01-31 19:46:46,293 INFO L226 Difference]: Without dead ends: 141 [2022-01-31 19:46:46,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=228, Invalid=2028, Unknown=0, NotChecked=0, Total=2256 [2022-01-31 19:46:46,294 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 102 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 1636 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 1744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 19:46:46,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 125 Invalid, 1744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1636 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 19:46:46,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-01-31 19:46:46,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 131. [2022-01-31 19:46:46,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 95 states have (on average 1.0315789473684212) internal successors, (98), 97 states have internal predecessors, (98), 25 states have call successors, (25), 11 states have call predecessors, (25), 10 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-31 19:46:46,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 147 transitions. [2022-01-31 19:46:46,350 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 147 transitions. Word has length 129 [2022-01-31 19:46:46,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:46:46,351 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 147 transitions. [2022-01-31 19:46:46,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.36) internal successors, (59), 22 states have internal predecessors, (59), 15 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) [2022-01-31 19:46:46,351 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 147 transitions. [2022-01-31 19:46:46,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-01-31 19:46:46,352 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:46:46,352 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:46:46,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-31 19:46:46,352 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:46:46,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:46:46,352 INFO L85 PathProgramCache]: Analyzing trace with hash 4778683, now seen corresponding path program 22 times [2022-01-31 19:46:46,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:46:46,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809212770] [2022-01-31 19:46:46,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:46:46,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:46:46,354 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:46:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:46,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:46:46,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:46,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:46:46,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:46,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:46:46,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:46,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:46:46,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:46,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:46:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:46,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:46:46,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:46,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:46:46,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:46,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:46:46,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:46,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:46:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:46,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:46:46,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:46,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 19:46:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:46,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 19:46:46,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:46,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 19:46:46,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:46,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 19:46:46,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:46,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 19:46:46,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:46,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 19:46:46,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:46,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 19:46:46,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:46,577 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-01-31 19:46:46,577 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:46:46,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809212770] [2022-01-31 19:46:46,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1809212770] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:46:46,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:46:46,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-31 19:46:46,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617178314] [2022-01-31 19:46:46,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:46:46,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-31 19:46:46,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:46:46,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-31 19:46:46,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2022-01-31 19:46:46,580 INFO L87 Difference]: Start difference. First operand 131 states and 147 transitions. Second operand has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 16 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2022-01-31 19:46:47,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:46:47,048 INFO L93 Difference]: Finished difference Result 161 states and 181 transitions. [2022-01-31 19:46:47,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-31 19:46:47,048 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 16 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) Word has length 137 [2022-01-31 19:46:47,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:46:47,049 INFO L225 Difference]: With dead ends: 161 [2022-01-31 19:46:47,049 INFO L226 Difference]: Without dead ends: 117 [2022-01-31 19:46:47,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=327, Invalid=1005, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 19:46:47,050 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 161 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:46:47,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 66 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:46:47,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-01-31 19:46:47,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 104. [2022-01-31 19:46:47,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 76 states have internal predecessors, (77), 19 states have call successors, (19), 10 states have call predecessors, (19), 9 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-01-31 19:46:47,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 114 transitions. [2022-01-31 19:46:47,073 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 114 transitions. Word has length 137 [2022-01-31 19:46:47,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:46:47,073 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 114 transitions. [2022-01-31 19:46:47,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 16 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2022-01-31 19:46:47,074 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 114 transitions. [2022-01-31 19:46:47,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-01-31 19:46:47,074 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:46:47,074 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:46:47,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-31 19:46:47,074 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:46:47,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:46:47,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1499587900, now seen corresponding path program 23 times [2022-01-31 19:46:47,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:46:47,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311203173] [2022-01-31 19:46:47,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:46:47,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:46:47,076 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:46:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:47,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:46:47,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:47,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:46:47,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:47,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:46:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:47,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:46:47,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:47,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:46:47,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:47,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:46:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:47,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:46:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:47,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:46:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:47,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:46:47,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:47,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:46:47,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:47,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:46:47,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:47,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 19:46:47,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:47,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 19:46:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:47,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 19:46:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:47,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 19:46:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:47,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 19:46:47,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:47,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 19:46:47,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:47,411 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 24 proven. 24 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-01-31 19:46:47,411 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:46:47,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311203173] [2022-01-31 19:46:47,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [311203173] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:46:47,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:46:47,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-31 19:46:47,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548209601] [2022-01-31 19:46:47,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:46:47,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-31 19:46:47,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:46:47,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-31 19:46:47,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2022-01-31 19:46:47,412 INFO L87 Difference]: Start difference. First operand 104 states and 114 transitions. Second operand has 27 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 23 states have internal predecessors, (62), 16 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (17), 16 states have call predecessors, (17), 15 states have call successors, (17) [2022-01-31 19:46:48,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:46:48,798 INFO L93 Difference]: Finished difference Result 159 states and 181 transitions. [2022-01-31 19:46:48,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-31 19:46:48,799 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 23 states have internal predecessors, (62), 16 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (17), 16 states have call predecessors, (17), 15 states have call successors, (17) Word has length 137 [2022-01-31 19:46:48,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:46:48,800 INFO L225 Difference]: With dead ends: 159 [2022-01-31 19:46:48,800 INFO L226 Difference]: Without dead ends: 157 [2022-01-31 19:46:48,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=266, Invalid=2386, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 19:46:48,801 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 196 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 2113 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 2312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 2113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 19:46:48,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 116 Invalid, 2312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 2113 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 19:46:48,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-01-31 19:46:48,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 139. [2022-01-31 19:46:48,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 101 states have (on average 1.0297029702970297) internal successors, (104), 103 states have internal predecessors, (104), 27 states have call successors, (27), 11 states have call predecessors, (27), 10 states have return successors, (26), 24 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-31 19:46:48,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 157 transitions. [2022-01-31 19:46:48,839 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 157 transitions. Word has length 137 [2022-01-31 19:46:48,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:46:48,839 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 157 transitions. [2022-01-31 19:46:48,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 23 states have internal predecessors, (62), 16 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (17), 16 states have call predecessors, (17), 15 states have call successors, (17) [2022-01-31 19:46:48,839 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 157 transitions. [2022-01-31 19:46:48,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-31 19:46:48,840 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:46:48,840 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:46:48,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-31 19:46:48,840 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:46:48,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:46:48,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1741464842, now seen corresponding path program 24 times [2022-01-31 19:46:48,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:46:48,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488459670] [2022-01-31 19:46:48,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:46:48,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:46:48,841 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:46:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:49,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:46:49,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:49,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:46:49,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:49,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:46:49,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:49,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:46:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:49,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:46:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:49,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:46:49,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:49,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:46:49,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:49,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:46:49,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:49,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:46:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:49,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:46:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:49,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:46:49,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:49,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 19:46:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:49,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 19:46:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:49,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 19:46:49,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:49,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 19:46:49,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:49,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 19:46:49,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:49,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 19:46:49,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:49,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 19:46:49,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:49,229 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 27 proven. 21 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-01-31 19:46:49,229 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:46:49,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488459670] [2022-01-31 19:46:49,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1488459670] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:46:49,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:46:49,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-01-31 19:46:49,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772792214] [2022-01-31 19:46:49,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:46:49,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-31 19:46:49,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:46:49,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-31 19:46:49,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=745, Unknown=0, NotChecked=0, Total=812 [2022-01-31 19:46:49,230 INFO L87 Difference]: Start difference. First operand 139 states and 157 transitions. Second operand has 29 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 25 states have internal predecessors, (65), 17 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 17 states have call predecessors, (18), 16 states have call successors, (18) [2022-01-31 19:46:50,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:46:50,912 INFO L93 Difference]: Finished difference Result 167 states and 189 transitions. [2022-01-31 19:46:50,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-31 19:46:50,913 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 25 states have internal predecessors, (65), 17 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 17 states have call predecessors, (18), 16 states have call successors, (18) Word has length 145 [2022-01-31 19:46:50,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:46:50,913 INFO L225 Difference]: With dead ends: 167 [2022-01-31 19:46:50,913 INFO L226 Difference]: Without dead ends: 165 [2022-01-31 19:46:50,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=271, Invalid=2699, Unknown=0, NotChecked=0, Total=2970 [2022-01-31 19:46:50,915 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 173 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 2573 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 2746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 2573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:46:50,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 150 Invalid, 2746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 2573 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 19:46:50,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-01-31 19:46:50,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 147. [2022-01-31 19:46:50,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 107 states have (on average 1.02803738317757) internal successors, (110), 109 states have internal predecessors, (110), 28 states have call successors, (28), 12 states have call predecessors, (28), 11 states have return successors, (27), 25 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-31 19:46:50,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 165 transitions. [2022-01-31 19:46:50,960 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 165 transitions. Word has length 145 [2022-01-31 19:46:50,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:46:50,961 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 165 transitions. [2022-01-31 19:46:50,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 25 states have internal predecessors, (65), 17 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 17 states have call predecessors, (18), 16 states have call successors, (18) [2022-01-31 19:46:50,961 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 165 transitions. [2022-01-31 19:46:50,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-31 19:46:50,962 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:46:50,962 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 9, 9, 9, 9, 9, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:46:50,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-31 19:46:50,962 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:46:50,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:46:50,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1058693237, now seen corresponding path program 25 times [2022-01-31 19:46:50,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:46:50,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153912107] [2022-01-31 19:46:50,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:46:50,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:46:50,964 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:46:50,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:51,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:46:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:51,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:46:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:51,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:46:51,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:51,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:46:51,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:51,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:46:51,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:51,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:46:51,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:51,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:46:51,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:51,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:46:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:51,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:46:51,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:51,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:46:51,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:51,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:46:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:51,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:46:51,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:51,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 19:46:51,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:51,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 19:46:51,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:51,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 19:46:51,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:51,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 19:46:51,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:51,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 19:46:51,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:51,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 19:46:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:51,386 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 24 proven. 30 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-01-31 19:46:51,386 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:46:51,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153912107] [2022-01-31 19:46:51,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1153912107] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:46:51,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:46:51,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-31 19:46:51,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496645060] [2022-01-31 19:46:51,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:46:51,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-31 19:46:51,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:46:51,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-31 19:46:51,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2022-01-31 19:46:51,387 INFO L87 Difference]: Start difference. First operand 147 states and 165 transitions. Second operand has 28 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 24 states have internal predecessors, (65), 17 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 17 states have call predecessors, (18), 16 states have call successors, (18) [2022-01-31 19:46:52,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:46:52,668 INFO L93 Difference]: Finished difference Result 159 states and 177 transitions. [2022-01-31 19:46:52,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-31 19:46:52,669 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 24 states have internal predecessors, (65), 17 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 17 states have call predecessors, (18), 16 states have call successors, (18) Word has length 145 [2022-01-31 19:46:52,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:46:52,670 INFO L225 Difference]: With dead ends: 159 [2022-01-31 19:46:52,670 INFO L226 Difference]: Without dead ends: 157 [2022-01-31 19:46:52,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=249, Invalid=2403, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 19:46:52,671 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 120 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 2119 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 2247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 19:46:52,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 147 Invalid, 2247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 2119 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 19:46:52,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-01-31 19:46:52,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 147. [2022-01-31 19:46:52,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 107 states have (on average 1.02803738317757) internal successors, (110), 109 states have internal predecessors, (110), 28 states have call successors, (28), 12 states have call predecessors, (28), 11 states have return successors, (27), 25 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-31 19:46:52,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 165 transitions. [2022-01-31 19:46:52,712 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 165 transitions. Word has length 145 [2022-01-31 19:46:52,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:46:52,712 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 165 transitions. [2022-01-31 19:46:52,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 24 states have internal predecessors, (65), 17 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 17 states have call predecessors, (18), 16 states have call successors, (18) [2022-01-31 19:46:52,713 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 165 transitions. [2022-01-31 19:46:52,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-01-31 19:46:52,713 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:46:52,713 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:46:52,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-31 19:46:52,713 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:46:52,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:46:52,714 INFO L85 PathProgramCache]: Analyzing trace with hash -904284456, now seen corresponding path program 26 times [2022-01-31 19:46:52,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:46:52,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103786867] [2022-01-31 19:46:52,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:46:52,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:46:52,720 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:46:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:52,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:46:52,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:52,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:46:52,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:52,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:46:52,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:52,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:46:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:52,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:46:52,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:52,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:46:52,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:52,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:46:52,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:52,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:46:52,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:52,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:46:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:52,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:46:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:52,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:46:52,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:52,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 19:46:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:52,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 19:46:52,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:52,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 19:46:52,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:52,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 19:46:52,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:52,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 19:46:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:52,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 19:46:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:52,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 19:46:52,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:52,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 19:46:52,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:52,912 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-01-31 19:46:52,912 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:46:52,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103786867] [2022-01-31 19:46:52,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2103786867] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:46:52,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:46:52,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-31 19:46:52,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540408681] [2022-01-31 19:46:52,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:46:52,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-31 19:46:52,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:46:52,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-31 19:46:52,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2022-01-31 19:46:52,913 INFO L87 Difference]: Start difference. First operand 147 states and 165 transitions. Second operand has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 21 states have internal predecessors, (65), 18 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 17 states have call predecessors, (19), 17 states have call successors, (19) [2022-01-31 19:46:53,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:46:53,489 INFO L93 Difference]: Finished difference Result 177 states and 199 transitions. [2022-01-31 19:46:53,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-31 19:46:53,490 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 21 states have internal predecessors, (65), 18 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 17 states have call predecessors, (19), 17 states have call successors, (19) Word has length 153 [2022-01-31 19:46:53,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:46:53,490 INFO L225 Difference]: With dead ends: 177 [2022-01-31 19:46:53,490 INFO L226 Difference]: Without dead ends: 129 [2022-01-31 19:46:53,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=398, Invalid=1242, Unknown=0, NotChecked=0, Total=1640 [2022-01-31 19:46:53,491 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 191 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:46:53,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 78 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:46:53,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-01-31 19:46:53,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 116. [2022-01-31 19:46:53,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 84 states have (on average 1.0238095238095237) internal successors, (86), 85 states have internal predecessors, (86), 21 states have call successors, (21), 11 states have call predecessors, (21), 10 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-31 19:46:53,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 127 transitions. [2022-01-31 19:46:53,519 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 127 transitions. Word has length 153 [2022-01-31 19:46:53,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:46:53,519 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 127 transitions. [2022-01-31 19:46:53,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 21 states have internal predecessors, (65), 18 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 17 states have call predecessors, (19), 17 states have call successors, (19) [2022-01-31 19:46:53,519 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 127 transitions. [2022-01-31 19:46:53,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-01-31 19:46:53,520 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:46:53,520 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:46:53,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-31 19:46:53,520 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:46:53,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:46:53,520 INFO L85 PathProgramCache]: Analyzing trace with hash 370450521, now seen corresponding path program 27 times [2022-01-31 19:46:53,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:46:53,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293089909] [2022-01-31 19:46:53,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:46:53,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:46:53,521 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:46:53,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:53,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:46:53,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:53,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:46:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:53,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:46:53,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:53,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:46:53,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:53,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:46:53,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:53,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:46:53,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:53,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:46:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:53,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:46:53,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:53,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:46:53,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:53,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:46:53,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:53,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:46:53,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:53,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:46:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:53,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 19:46:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:53,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 19:46:53,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:53,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 19:46:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:53,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 19:46:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:53,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 19:46:53,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:53,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 19:46:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:53,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 19:46:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:53,904 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 27 proven. 27 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-01-31 19:46:53,904 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:46:53,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293089909] [2022-01-31 19:46:53,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [293089909] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:46:53,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:46:53,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-01-31 19:46:53,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098077512] [2022-01-31 19:46:53,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:46:53,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-31 19:46:53,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:46:53,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-31 19:46:53,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=744, Unknown=0, NotChecked=0, Total=812 [2022-01-31 19:46:53,905 INFO L87 Difference]: Start difference. First operand 116 states and 127 transitions. Second operand has 29 states, 28 states have (on average 2.4285714285714284) internal successors, (68), 25 states have internal predecessors, (68), 18 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 18 states have call predecessors, (19), 17 states have call successors, (19) [2022-01-31 19:46:55,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:46:55,378 INFO L93 Difference]: Finished difference Result 175 states and 199 transitions. [2022-01-31 19:46:55,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-31 19:46:55,378 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.4285714285714284) internal successors, (68), 25 states have internal predecessors, (68), 18 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 18 states have call predecessors, (19), 17 states have call successors, (19) Word has length 153 [2022-01-31 19:46:55,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:46:55,379 INFO L225 Difference]: With dead ends: 175 [2022-01-31 19:46:55,379 INFO L226 Difference]: Without dead ends: 173 [2022-01-31 19:46:55,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=289, Invalid=2791, Unknown=0, NotChecked=0, Total=3080 [2022-01-31 19:46:55,381 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 203 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2550 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 2757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 2550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 19:46:55,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 123 Invalid, 2757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 2550 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 19:46:55,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-01-31 19:46:55,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 155. [2022-01-31 19:46:55,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 113 states have (on average 1.0265486725663717) internal successors, (116), 115 states have internal predecessors, (116), 30 states have call successors, (30), 12 states have call predecessors, (30), 11 states have return successors, (29), 27 states have call predecessors, (29), 29 states have call successors, (29) [2022-01-31 19:46:55,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 175 transitions. [2022-01-31 19:46:55,442 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 175 transitions. Word has length 153 [2022-01-31 19:46:55,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:46:55,443 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 175 transitions. [2022-01-31 19:46:55,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.4285714285714284) internal successors, (68), 25 states have internal predecessors, (68), 18 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 18 states have call predecessors, (19), 17 states have call successors, (19) [2022-01-31 19:46:55,443 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 175 transitions. [2022-01-31 19:46:55,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-31 19:46:55,443 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:46:55,444 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:46:55,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-31 19:46:55,444 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:46:55,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:46:55,444 INFO L85 PathProgramCache]: Analyzing trace with hash 458552103, now seen corresponding path program 28 times [2022-01-31 19:46:55,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:46:55,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980766349] [2022-01-31 19:46:55,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:46:55,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:46:55,445 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:46:55,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:55,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:46:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:55,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:46:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:55,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:46:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:55,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:46:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:55,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:46:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:55,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:46:55,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:55,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:46:55,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:55,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:46:55,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:55,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:46:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:55,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:46:55,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:55,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:46:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:55,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:46:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:55,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 19:46:55,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:55,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 19:46:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:55,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 19:46:55,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:55,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 19:46:55,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:55,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 19:46:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:55,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 19:46:55,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:55,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 19:46:55,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:55,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 19:46:55,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:55,866 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 30 proven. 24 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-01-31 19:46:55,866 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:46:55,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980766349] [2022-01-31 19:46:55,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1980766349] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:46:55,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:46:55,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-01-31 19:46:55,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320940486] [2022-01-31 19:46:55,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:46:55,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-31 19:46:55,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:46:55,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-31 19:46:55,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=801, Unknown=0, NotChecked=0, Total=870 [2022-01-31 19:46:55,868 INFO L87 Difference]: Start difference. First operand 155 states and 175 transitions. Second operand has 30 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 26 states have internal predecessors, (71), 19 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 19 states have call predecessors, (20), 18 states have call successors, (20) [2022-01-31 19:46:57,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:46:57,535 INFO L93 Difference]: Finished difference Result 183 states and 207 transitions. [2022-01-31 19:46:57,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-31 19:46:57,535 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 26 states have internal predecessors, (71), 19 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 19 states have call predecessors, (20), 18 states have call successors, (20) Word has length 161 [2022-01-31 19:46:57,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:46:57,536 INFO L225 Difference]: With dead ends: 183 [2022-01-31 19:46:57,536 INFO L226 Difference]: Without dead ends: 181 [2022-01-31 19:46:57,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=284, Invalid=3022, Unknown=0, NotChecked=0, Total=3306 [2022-01-31 19:46:57,537 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 180 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 3160 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 3342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 3160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:46:57,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 166 Invalid, 3342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 3160 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 19:46:57,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-01-31 19:46:57,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 163. [2022-01-31 19:46:57,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 119 states have (on average 1.0252100840336134) internal successors, (122), 121 states have internal predecessors, (122), 31 states have call successors, (31), 13 states have call predecessors, (31), 12 states have return successors, (30), 28 states have call predecessors, (30), 30 states have call successors, (30) [2022-01-31 19:46:57,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 183 transitions. [2022-01-31 19:46:57,588 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 183 transitions. Word has length 161 [2022-01-31 19:46:57,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:46:57,589 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 183 transitions. [2022-01-31 19:46:57,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 26 states have internal predecessors, (71), 19 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 19 states have call predecessors, (20), 18 states have call successors, (20) [2022-01-31 19:46:57,589 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 183 transitions. [2022-01-31 19:46:57,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-31 19:46:57,589 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:46:57,590 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 10, 10, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:46:57,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-31 19:46:57,590 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:46:57,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:46:57,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1733287080, now seen corresponding path program 29 times [2022-01-31 19:46:57,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:46:57,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598487019] [2022-01-31 19:46:57,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:46:57,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:46:57,591 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:46:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:57,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:46:57,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:57,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:46:57,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:57,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:46:57,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:58,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:46:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:58,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:46:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:58,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:46:58,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:58,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:46:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:58,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:46:58,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:58,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:46:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:58,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:46:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:58,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:46:58,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:58,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:46:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:58,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:46:58,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:58,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 19:46:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:58,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 19:46:58,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:58,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 19:46:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:58,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 19:46:58,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:58,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 19:46:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:58,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 19:46:58,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:58,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 19:46:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:58,028 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 27 proven. 33 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-01-31 19:46:58,029 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:46:58,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598487019] [2022-01-31 19:46:58,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [598487019] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:46:58,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:46:58,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-01-31 19:46:58,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976431003] [2022-01-31 19:46:58,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:46:58,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-31 19:46:58,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:46:58,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-31 19:46:58,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=798, Unknown=0, NotChecked=0, Total=870 [2022-01-31 19:46:58,030 INFO L87 Difference]: Start difference. First operand 163 states and 183 transitions. Second operand has 30 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 26 states have internal predecessors, (71), 19 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 19 states have call predecessors, (20), 18 states have call successors, (20) [2022-01-31 19:46:59,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:46:59,198 INFO L93 Difference]: Finished difference Result 175 states and 195 transitions. [2022-01-31 19:46:59,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-31 19:46:59,199 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 26 states have internal predecessors, (71), 19 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 19 states have call predecessors, (20), 18 states have call successors, (20) Word has length 161 [2022-01-31 19:46:59,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:46:59,200 INFO L225 Difference]: With dead ends: 175 [2022-01-31 19:46:59,200 INFO L226 Difference]: Without dead ends: 173 [2022-01-31 19:46:59,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=270, Invalid=2810, Unknown=0, NotChecked=0, Total=3080 [2022-01-31 19:46:59,200 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 124 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 2449 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 2584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 2449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 19:46:59,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 144 Invalid, 2584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 2449 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 19:46:59,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-01-31 19:46:59,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 163. [2022-01-31 19:46:59,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 119 states have (on average 1.0252100840336134) internal successors, (122), 121 states have internal predecessors, (122), 31 states have call successors, (31), 13 states have call predecessors, (31), 12 states have return successors, (30), 28 states have call predecessors, (30), 30 states have call successors, (30) [2022-01-31 19:46:59,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 183 transitions. [2022-01-31 19:46:59,252 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 183 transitions. Word has length 161 [2022-01-31 19:46:59,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:46:59,254 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 183 transitions. [2022-01-31 19:46:59,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 26 states have internal predecessors, (71), 19 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 19 states have call predecessors, (20), 18 states have call successors, (20) [2022-01-31 19:46:59,254 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 183 transitions. [2022-01-31 19:46:59,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-01-31 19:46:59,255 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:46:59,255 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:46:59,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-31 19:46:59,255 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:46:59,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:46:59,255 INFO L85 PathProgramCache]: Analyzing trace with hash 456431605, now seen corresponding path program 30 times [2022-01-31 19:46:59,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:46:59,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372291026] [2022-01-31 19:46:59,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:46:59,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:46:59,256 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:46:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:59,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:46:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:59,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:46:59,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:59,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:46:59,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:59,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:46:59,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:59,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:46:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:59,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:46:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:59,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:46:59,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:59,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:46:59,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:59,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:46:59,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:59,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:46:59,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:59,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:46:59,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:59,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:46:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:59,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 19:46:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:59,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 19:46:59,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:59,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 19:46:59,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:59,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 19:46:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:59,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 19:46:59,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:59,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 19:46:59,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:59,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 19:46:59,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:59,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 19:46:59,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:59,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 19:46:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:59,534 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-01-31 19:46:59,534 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:46:59,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372291026] [2022-01-31 19:46:59,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1372291026] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:46:59,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:46:59,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-01-31 19:46:59,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993553641] [2022-01-31 19:46:59,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:46:59,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-31 19:46:59,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:46:59,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-31 19:46:59,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2022-01-31 19:46:59,536 INFO L87 Difference]: Start difference. First operand 163 states and 183 transitions. Second operand has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 20 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 19 states have call predecessors, (21), 19 states have call successors, (21) [2022-01-31 19:47:00,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:47:00,165 INFO L93 Difference]: Finished difference Result 193 states and 217 transitions. [2022-01-31 19:47:00,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-31 19:47:00,166 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 20 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 19 states have call predecessors, (21), 19 states have call successors, (21) Word has length 169 [2022-01-31 19:47:00,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:47:00,166 INFO L225 Difference]: With dead ends: 193 [2022-01-31 19:47:00,166 INFO L226 Difference]: Without dead ends: 141 [2022-01-31 19:47:00,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=476, Invalid=1504, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 19:47:00,167 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 201 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:47:00,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 75 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:47:00,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-01-31 19:47:00,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 128. [2022-01-31 19:47:00,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 93 states have (on average 1.021505376344086) internal successors, (95), 94 states have internal predecessors, (95), 23 states have call successors, (23), 12 states have call predecessors, (23), 11 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-01-31 19:47:00,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 140 transitions. [2022-01-31 19:47:00,214 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 140 transitions. Word has length 169 [2022-01-31 19:47:00,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:47:00,215 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 140 transitions. [2022-01-31 19:47:00,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 20 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 19 states have call predecessors, (21), 19 states have call successors, (21) [2022-01-31 19:47:00,215 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 140 transitions. [2022-01-31 19:47:00,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-01-31 19:47:00,215 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:47:00,215 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 10, 10, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:47:00,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-31 19:47:00,216 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:47:00,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:47:00,216 INFO L85 PathProgramCache]: Analyzing trace with hash -860721034, now seen corresponding path program 31 times [2022-01-31 19:47:00,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:47:00,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364698914] [2022-01-31 19:47:00,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:47:00,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:47:00,217 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:47:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:00,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:47:00,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:00,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:47:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:00,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:47:00,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:00,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:47:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:00,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:47:00,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:00,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:47:00,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:00,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:47:00,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:00,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:47:00,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:00,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:47:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:00,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:47:00,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:00,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:47:00,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:00,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:47:00,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:00,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:47:00,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:00,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 19:47:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:00,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 19:47:00,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:00,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 19:47:00,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:00,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 19:47:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:00,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 19:47:00,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:00,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 19:47:00,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:00,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 19:47:00,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:00,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 19:47:00,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:00,659 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 30 proven. 30 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-01-31 19:47:00,659 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:47:00,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364698914] [2022-01-31 19:47:00,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1364698914] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:47:00,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:47:00,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-01-31 19:47:00,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962525938] [2022-01-31 19:47:00,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:47:00,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-31 19:47:00,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:47:00,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-31 19:47:00,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=857, Unknown=0, NotChecked=0, Total=930 [2022-01-31 19:47:00,661 INFO L87 Difference]: Start difference. First operand 128 states and 140 transitions. Second operand has 31 states, 30 states have (on average 2.466666666666667) internal successors, (74), 27 states have internal predecessors, (74), 20 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 20 states have call predecessors, (21), 19 states have call successors, (21) [2022-01-31 19:47:02,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:47:02,308 INFO L93 Difference]: Finished difference Result 191 states and 217 transitions. [2022-01-31 19:47:02,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-31 19:47:02,308 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.466666666666667) internal successors, (74), 27 states have internal predecessors, (74), 20 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 20 states have call predecessors, (21), 19 states have call successors, (21) Word has length 169 [2022-01-31 19:47:02,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:47:02,309 INFO L225 Difference]: With dead ends: 191 [2022-01-31 19:47:02,309 INFO L226 Difference]: Without dead ends: 189 [2022-01-31 19:47:02,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 628 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=312, Invalid=3228, Unknown=0, NotChecked=0, Total=3540 [2022-01-31 19:47:02,310 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 232 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 2980 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 3217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 2980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:47:02,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 136 Invalid, 3217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 2980 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 19:47:02,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-01-31 19:47:02,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 171. [2022-01-31 19:47:02,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 125 states have (on average 1.024) internal successors, (128), 127 states have internal predecessors, (128), 33 states have call successors, (33), 13 states have call predecessors, (33), 12 states have return successors, (32), 30 states have call predecessors, (32), 32 states have call successors, (32) [2022-01-31 19:47:02,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 193 transitions. [2022-01-31 19:47:02,367 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 193 transitions. Word has length 169 [2022-01-31 19:47:02,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:47:02,367 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 193 transitions. [2022-01-31 19:47:02,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.466666666666667) internal successors, (74), 27 states have internal predecessors, (74), 20 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 20 states have call predecessors, (21), 19 states have call successors, (21) [2022-01-31 19:47:02,367 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 193 transitions. [2022-01-31 19:47:02,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-31 19:47:02,368 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:47:02,368 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:47:02,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-31 19:47:02,368 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:47:02,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:47:02,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1256412740, now seen corresponding path program 32 times [2022-01-31 19:47:02,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:47:02,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993294949] [2022-01-31 19:47:02,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:47:02,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:47:02,370 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:47:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:02,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:47:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:02,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:47:02,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:02,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:47:02,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:02,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:47:02,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:02,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:47:02,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:02,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:47:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:02,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:47:02,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:02,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:47:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:02,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:47:02,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:02,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:47:02,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:02,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:47:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:02,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:47:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:02,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:47:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:02,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 19:47:02,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:02,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 19:47:02,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:02,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 19:47:02,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:02,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 19:47:02,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:02,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 19:47:02,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:02,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 19:47:02,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:02,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 19:47:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:02,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 19:47:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:02,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 19:47:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:02,806 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 33 proven. 27 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-01-31 19:47:02,806 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:47:02,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993294949] [2022-01-31 19:47:02,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [993294949] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:47:02,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:47:02,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-31 19:47:02,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377205342] [2022-01-31 19:47:02,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:47:02,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-31 19:47:02,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:47:02,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-31 19:47:02,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-01-31 19:47:02,809 INFO L87 Difference]: Start difference. First operand 171 states and 193 transitions. Second operand has 32 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 28 states have internal predecessors, (77), 21 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 21 states have call predecessors, (22), 20 states have call successors, (22) [2022-01-31 19:47:04,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:47:04,546 INFO L93 Difference]: Finished difference Result 199 states and 225 transitions. [2022-01-31 19:47:04,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-31 19:47:04,547 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 28 states have internal predecessors, (77), 21 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 21 states have call predecessors, (22), 20 states have call successors, (22) Word has length 177 [2022-01-31 19:47:04,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:47:04,548 INFO L225 Difference]: With dead ends: 199 [2022-01-31 19:47:04,548 INFO L226 Difference]: Without dead ends: 197 [2022-01-31 19:47:04,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=305, Invalid=3477, Unknown=0, NotChecked=0, Total=3782 [2022-01-31 19:47:04,549 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 231 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 3321 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 3553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 3321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:47:04,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 134 Invalid, 3553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 3321 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 19:47:04,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-01-31 19:47:04,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 179. [2022-01-31 19:47:04,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 131 states have (on average 1.0229007633587786) internal successors, (134), 133 states have internal predecessors, (134), 34 states have call successors, (34), 14 states have call predecessors, (34), 13 states have return successors, (33), 31 states have call predecessors, (33), 33 states have call successors, (33) [2022-01-31 19:47:04,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 201 transitions. [2022-01-31 19:47:04,611 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 201 transitions. Word has length 177 [2022-01-31 19:47:04,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:47:04,611 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 201 transitions. [2022-01-31 19:47:04,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 28 states have internal predecessors, (77), 21 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 21 states have call predecessors, (22), 20 states have call successors, (22) [2022-01-31 19:47:04,611 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 201 transitions. [2022-01-31 19:47:04,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-31 19:47:04,612 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:47:04,612 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 11, 11, 11, 11, 11, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:47:04,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-31 19:47:04,612 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:47:04,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:47:04,612 INFO L85 PathProgramCache]: Analyzing trace with hash -60739899, now seen corresponding path program 33 times [2022-01-31 19:47:04,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:47:04,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653934999] [2022-01-31 19:47:04,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:47:04,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:47:04,614 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:47:04,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:05,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:47:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:05,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:47:05,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:05,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:47:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:05,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:47:05,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:05,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:47:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:05,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:47:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:05,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:47:05,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:05,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:47:05,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:05,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:47:05,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:05,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:47:05,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:05,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:47:05,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:05,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:47:05,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:05,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:47:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:05,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:47:05,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:05,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 19:47:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:05,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 19:47:05,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:05,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 19:47:05,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:05,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 19:47:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:05,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 19:47:05,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:05,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 19:47:05,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:05,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 19:47:05,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:05,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 19:47:05,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:05,101 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 30 proven. 36 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2022-01-31 19:47:05,101 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:47:05,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653934999] [2022-01-31 19:47:05,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [653934999] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:47:05,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:47:05,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-31 19:47:05,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224011902] [2022-01-31 19:47:05,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:47:05,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-31 19:47:05,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:47:05,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-31 19:47:05,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=915, Unknown=0, NotChecked=0, Total=992 [2022-01-31 19:47:05,102 INFO L87 Difference]: Start difference. First operand 179 states and 201 transitions. Second operand has 32 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 28 states have internal predecessors, (77), 21 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 21 states have call predecessors, (22), 20 states have call successors, (22) [2022-01-31 19:47:06,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:47:06,283 INFO L93 Difference]: Finished difference Result 191 states and 213 transitions. [2022-01-31 19:47:06,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-31 19:47:06,283 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 28 states have internal predecessors, (77), 21 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 21 states have call predecessors, (22), 20 states have call successors, (22) Word has length 177 [2022-01-31 19:47:06,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:47:06,284 INFO L225 Difference]: With dead ends: 191 [2022-01-31 19:47:06,284 INFO L226 Difference]: Without dead ends: 189 [2022-01-31 19:47:06,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=291, Invalid=3249, Unknown=0, NotChecked=0, Total=3540 [2022-01-31 19:47:06,285 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 129 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 3100 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 3239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 3100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 19:47:06,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 174 Invalid, 3239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 3100 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 19:47:06,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-01-31 19:47:06,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 179. [2022-01-31 19:47:06,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 131 states have (on average 1.0229007633587786) internal successors, (134), 133 states have internal predecessors, (134), 34 states have call successors, (34), 14 states have call predecessors, (34), 13 states have return successors, (33), 31 states have call predecessors, (33), 33 states have call successors, (33) [2022-01-31 19:47:06,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 201 transitions. [2022-01-31 19:47:06,360 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 201 transitions. Word has length 177 [2022-01-31 19:47:06,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:47:06,360 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 201 transitions. [2022-01-31 19:47:06,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 28 states have internal predecessors, (77), 21 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 21 states have call predecessors, (22), 20 states have call successors, (22) [2022-01-31 19:47:06,360 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 201 transitions. [2022-01-31 19:47:06,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-01-31 19:47:06,361 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:47:06,361 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:47:06,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-31 19:47:06,361 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:47:06,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:47:06,361 INFO L85 PathProgramCache]: Analyzing trace with hash 527470098, now seen corresponding path program 34 times [2022-01-31 19:47:06,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:47:06,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465762871] [2022-01-31 19:47:06,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:47:06,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:47:06,363 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:47:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:06,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:47:06,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:06,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:47:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:06,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:47:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:06,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:47:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:06,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:47:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:06,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:47:06,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:06,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:47:06,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:06,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:47:06,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:06,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:47:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:06,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:47:06,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:06,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:47:06,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:06,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:47:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:06,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:47:06,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:06,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 19:47:06,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:06,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 19:47:06,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:06,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 19:47:06,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:06,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 19:47:06,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:06,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 19:47:06,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:06,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 19:47:06,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:06,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 19:47:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:06,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 19:47:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:06,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 19:47:06,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:06,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:47:06,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:06,603 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-01-31 19:47:06,603 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:47:06,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465762871] [2022-01-31 19:47:06,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [465762871] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:47:06,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:47:06,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-31 19:47:06,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817288133] [2022-01-31 19:47:06,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:47:06,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-31 19:47:06,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:47:06,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-31 19:47:06,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2022-01-31 19:47:06,604 INFO L87 Difference]: Start difference. First operand 179 states and 201 transitions. Second operand has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 25 states have internal predecessors, (77), 22 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 21 states have call predecessors, (23), 21 states have call successors, (23) [2022-01-31 19:47:07,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:47:07,264 INFO L93 Difference]: Finished difference Result 209 states and 235 transitions. [2022-01-31 19:47:07,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-31 19:47:07,265 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 25 states have internal predecessors, (77), 22 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 21 states have call predecessors, (23), 21 states have call successors, (23) Word has length 185 [2022-01-31 19:47:07,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:47:07,265 INFO L225 Difference]: With dead ends: 209 [2022-01-31 19:47:07,265 INFO L226 Difference]: Without dead ends: 153 [2022-01-31 19:47:07,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=561, Invalid=1791, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 19:47:07,267 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 207 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 19:47:07,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 87 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 19:47:07,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-01-31 19:47:07,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 140. [2022-01-31 19:47:07,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 102 states have (on average 1.0196078431372548) internal successors, (104), 103 states have internal predecessors, (104), 25 states have call successors, (25), 13 states have call predecessors, (25), 12 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-31 19:47:07,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 153 transitions. [2022-01-31 19:47:07,305 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 153 transitions. Word has length 185 [2022-01-31 19:47:07,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:47:07,306 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 153 transitions. [2022-01-31 19:47:07,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 25 states have internal predecessors, (77), 22 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 21 states have call predecessors, (23), 21 states have call successors, (23) [2022-01-31 19:47:07,306 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 153 transitions. [2022-01-31 19:47:07,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-01-31 19:47:07,306 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:47:07,306 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 11, 11, 11, 11, 11, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:47:07,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-31 19:47:07,307 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:47:07,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:47:07,307 INFO L85 PathProgramCache]: Analyzing trace with hash 2014467475, now seen corresponding path program 35 times [2022-01-31 19:47:07,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:47:07,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622979033] [2022-01-31 19:47:07,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:47:07,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:47:07,308 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:47:07,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:07,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:47:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:07,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:47:07,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:07,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:47:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:07,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:47:07,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:07,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:47:07,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:07,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:47:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:07,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:47:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:07,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:47:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:07,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:47:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:07,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:47:07,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:07,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:47:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:07,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:47:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:07,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:47:07,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:07,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:47:07,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:07,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 19:47:07,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:07,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 19:47:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:07,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 19:47:07,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:07,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 19:47:07,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:07,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 19:47:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:07,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 19:47:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:07,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 19:47:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:07,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 19:47:07,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:07,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:47:07,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:07,761 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 33 proven. 33 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2022-01-31 19:47:07,761 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:47:07,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622979033] [2022-01-31 19:47:07,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [622979033] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:47:07,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:47:07,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-31 19:47:07,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692445083] [2022-01-31 19:47:07,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:47:07,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-31 19:47:07,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:47:07,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-31 19:47:07,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=978, Unknown=0, NotChecked=0, Total=1056 [2022-01-31 19:47:07,762 INFO L87 Difference]: Start difference. First operand 140 states and 153 transitions. Second operand has 33 states, 32 states have (on average 2.5) internal successors, (80), 29 states have internal predecessors, (80), 22 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2022-01-31 19:47:09,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:47:09,210 INFO L93 Difference]: Finished difference Result 207 states and 235 transitions. [2022-01-31 19:47:09,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-31 19:47:09,210 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.5) internal successors, (80), 29 states have internal predecessors, (80), 22 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) Word has length 185 [2022-01-31 19:47:09,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:47:09,211 INFO L225 Difference]: With dead ends: 207 [2022-01-31 19:47:09,211 INFO L226 Difference]: Without dead ends: 205 [2022-01-31 19:47:09,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 720 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=335, Invalid=3697, Unknown=0, NotChecked=0, Total=4032 [2022-01-31 19:47:09,212 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 233 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 3519 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 3765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 3519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 19:47:09,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 142 Invalid, 3765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 3519 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 19:47:09,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-01-31 19:47:09,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 187. [2022-01-31 19:47:09,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 137 states have (on average 1.0218978102189782) internal successors, (140), 139 states have internal predecessors, (140), 36 states have call successors, (36), 14 states have call predecessors, (36), 13 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) [2022-01-31 19:47:09,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 211 transitions. [2022-01-31 19:47:09,315 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 211 transitions. Word has length 185 [2022-01-31 19:47:09,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:47:09,315 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 211 transitions. [2022-01-31 19:47:09,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.5) internal successors, (80), 29 states have internal predecessors, (80), 22 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2022-01-31 19:47:09,315 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 211 transitions. [2022-01-31 19:47:09,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-01-31 19:47:09,316 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:47:09,316 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:47:09,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-31 19:47:09,316 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:47:09,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:47:09,317 INFO L85 PathProgramCache]: Analyzing trace with hash 709807713, now seen corresponding path program 36 times [2022-01-31 19:47:09,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:47:09,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823838932] [2022-01-31 19:47:09,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:47:09,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:47:09,318 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:47:09,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:09,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:47:09,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:09,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:47:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:09,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:47:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:09,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:47:09,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:09,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:47:09,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:09,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:47:09,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:09,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:47:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:09,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:47:09,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:09,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:47:09,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:09,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:47:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:09,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:47:09,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:09,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:47:09,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:09,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:47:09,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:09,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:47:09,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:09,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 19:47:09,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:09,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 19:47:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:09,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 19:47:09,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:09,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 19:47:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:09,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 19:47:09,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:09,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 19:47:09,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:09,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 19:47:09,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:09,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 19:47:09,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:09,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:47:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:09,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:47:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:09,812 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 36 proven. 30 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2022-01-31 19:47:09,812 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:47:09,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823838932] [2022-01-31 19:47:09,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1823838932] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:47:09,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:47:09,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-01-31 19:47:09,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038183409] [2022-01-31 19:47:09,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:47:09,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-31 19:47:09,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:47:09,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-31 19:47:09,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=1108, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 19:47:09,813 INFO L87 Difference]: Start difference. First operand 187 states and 211 transitions. Second operand has 35 states, 33 states have (on average 2.515151515151515) internal successors, (83), 31 states have internal predecessors, (83), 23 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (24), 23 states have call predecessors, (24), 22 states have call successors, (24) [2022-01-31 19:47:11,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:47:11,853 INFO L93 Difference]: Finished difference Result 215 states and 243 transitions. [2022-01-31 19:47:11,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-31 19:47:11,853 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 2.515151515151515) internal successors, (83), 31 states have internal predecessors, (83), 23 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (24), 23 states have call predecessors, (24), 22 states have call successors, (24) Word has length 193 [2022-01-31 19:47:11,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:47:11,854 INFO L225 Difference]: With dead ends: 215 [2022-01-31 19:47:11,854 INFO L226 Difference]: Without dead ends: 213 [2022-01-31 19:47:11,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 801 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=334, Invalid=4088, Unknown=0, NotChecked=0, Total=4422 [2022-01-31 19:47:11,855 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 233 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 4003 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 4244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 4003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:47:11,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 166 Invalid, 4244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 4003 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-31 19:47:11,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-01-31 19:47:11,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 195. [2022-01-31 19:47:11,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 143 states have (on average 1.020979020979021) internal successors, (146), 145 states have internal predecessors, (146), 37 states have call successors, (37), 15 states have call predecessors, (37), 14 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) [2022-01-31 19:47:11,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 219 transitions. [2022-01-31 19:47:11,928 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 219 transitions. Word has length 193 [2022-01-31 19:47:11,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:47:11,928 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 219 transitions. [2022-01-31 19:47:11,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 2.515151515151515) internal successors, (83), 31 states have internal predecessors, (83), 23 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (24), 23 states have call predecessors, (24), 22 states have call successors, (24) [2022-01-31 19:47:11,928 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 219 transitions. [2022-01-31 19:47:11,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-01-31 19:47:11,929 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:47:11,929 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 12, 12, 12, 12, 12, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:47:11,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-31 19:47:11,929 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:47:11,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:47:11,929 INFO L85 PathProgramCache]: Analyzing trace with hash -2098162206, now seen corresponding path program 37 times [2022-01-31 19:47:11,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:47:11,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151410917] [2022-01-31 19:47:11,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:47:11,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:47:11,931 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:47:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:12,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:47:12,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:12,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:47:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:12,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:47:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:12,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:47:12,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:12,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:47:12,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:12,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:47:12,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:12,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:47:12,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:12,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:47:12,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:12,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:47:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:12,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:47:12,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:12,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:47:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:12,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:47:12,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:12,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:47:12,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:12,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:47:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:12,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:47:12,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:12,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 19:47:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:12,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 19:47:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:12,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 19:47:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:12,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 19:47:12,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:12,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 19:47:12,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:12,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 19:47:12,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:12,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 19:47:12,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:12,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:47:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:12,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:47:12,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:12,487 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 33 proven. 39 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2022-01-31 19:47:12,488 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:47:12,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151410917] [2022-01-31 19:47:12,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [151410917] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:47:12,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:47:12,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-01-31 19:47:12,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177493703] [2022-01-31 19:47:12,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:47:12,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-31 19:47:12,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:47:12,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-31 19:47:12,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=1040, Unknown=0, NotChecked=0, Total=1122 [2022-01-31 19:47:12,489 INFO L87 Difference]: Start difference. First operand 195 states and 219 transitions. Second operand has 34 states, 33 states have (on average 2.515151515151515) internal successors, (83), 30 states have internal predecessors, (83), 23 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (24), 23 states have call predecessors, (24), 22 states have call successors, (24) [2022-01-31 19:47:14,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:47:14,336 INFO L93 Difference]: Finished difference Result 207 states and 231 transitions. [2022-01-31 19:47:14,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-31 19:47:14,336 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.515151515151515) internal successors, (83), 30 states have internal predecessors, (83), 23 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (24), 23 states have call predecessors, (24), 22 states have call successors, (24) Word has length 193 [2022-01-31 19:47:14,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:47:14,337 INFO L225 Difference]: With dead ends: 207 [2022-01-31 19:47:14,337 INFO L226 Difference]: Without dead ends: 205 [2022-01-31 19:47:14,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=312, Invalid=3720, Unknown=0, NotChecked=0, Total=4032 [2022-01-31 19:47:14,339 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 152 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 3310 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 3477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 3310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:47:14,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 147 Invalid, 3477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 3310 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 19:47:14,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-01-31 19:47:14,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 195. [2022-01-31 19:47:14,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 143 states have (on average 1.020979020979021) internal successors, (146), 145 states have internal predecessors, (146), 37 states have call successors, (37), 15 states have call predecessors, (37), 14 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) [2022-01-31 19:47:14,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 219 transitions. [2022-01-31 19:47:14,427 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 219 transitions. Word has length 193 [2022-01-31 19:47:14,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:47:14,427 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 219 transitions. [2022-01-31 19:47:14,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.515151515151515) internal successors, (83), 30 states have internal predecessors, (83), 23 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (24), 23 states have call predecessors, (24), 22 states have call successors, (24) [2022-01-31 19:47:14,427 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 219 transitions. [2022-01-31 19:47:14,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-01-31 19:47:14,428 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:47:14,428 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:47:14,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-31 19:47:14,428 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:47:14,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:47:14,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1134860591, now seen corresponding path program 38 times [2022-01-31 19:47:14,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:47:14,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [150970059] [2022-01-31 19:47:14,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:47:14,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:47:14,430 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:47:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:14,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:47:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:14,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:47:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:14,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:47:14,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:14,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:47:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:14,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:47:14,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:14,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:47:14,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:14,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:47:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:14,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:47:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:14,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:47:14,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:14,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:47:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:14,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:47:14,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:14,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:47:14,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:14,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:47:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:14,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:47:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:14,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 19:47:14,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:14,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 19:47:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:14,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 19:47:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:14,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 19:47:14,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:14,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 19:47:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:14,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 19:47:14,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:14,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 19:47:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:14,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 19:47:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:14,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:47:14,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:14,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:47:14,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:14,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:47:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:14,699 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-01-31 19:47:14,699 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:47:14,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [150970059] [2022-01-31 19:47:14,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [150970059] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:47:14,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:47:14,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-31 19:47:14,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235094537] [2022-01-31 19:47:14,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:47:14,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-31 19:47:14,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:47:14,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-31 19:47:14,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=569, Unknown=0, NotChecked=0, Total=756 [2022-01-31 19:47:14,700 INFO L87 Difference]: Start difference. First operand 195 states and 219 transitions. Second operand has 28 states, 28 states have (on average 2.9642857142857144) internal successors, (83), 27 states have internal predecessors, (83), 24 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25) [2022-01-31 19:47:15,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:47:15,417 INFO L93 Difference]: Finished difference Result 225 states and 253 transitions. [2022-01-31 19:47:15,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-31 19:47:15,418 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.9642857142857144) internal successors, (83), 27 states have internal predecessors, (83), 24 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25) Word has length 201 [2022-01-31 19:47:15,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:47:15,419 INFO L225 Difference]: With dead ends: 225 [2022-01-31 19:47:15,419 INFO L226 Difference]: Without dead ends: 165 [2022-01-31 19:47:15,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=653, Invalid=2103, Unknown=0, NotChecked=0, Total=2756 [2022-01-31 19:47:15,420 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 253 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 19:47:15,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 74 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 19:47:15,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-01-31 19:47:15,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 152. [2022-01-31 19:47:15,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 111 states have (on average 1.018018018018018) internal successors, (113), 112 states have internal predecessors, (113), 27 states have call successors, (27), 14 states have call predecessors, (27), 13 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-31 19:47:15,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 166 transitions. [2022-01-31 19:47:15,493 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 166 transitions. Word has length 201 [2022-01-31 19:47:15,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:47:15,494 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 166 transitions. [2022-01-31 19:47:15,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.9642857142857144) internal successors, (83), 27 states have internal predecessors, (83), 24 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25) [2022-01-31 19:47:15,494 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 166 transitions. [2022-01-31 19:47:15,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-01-31 19:47:15,495 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:47:15,495 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 12, 12, 12, 12, 12, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:47:15,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-31 19:47:15,495 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:47:15,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:47:15,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1410027440, now seen corresponding path program 39 times [2022-01-31 19:47:15,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:47:15,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128568932] [2022-01-31 19:47:15,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:47:15,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:47:15,498 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:47:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:15,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:47:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:15,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:47:15,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:15,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:47:15,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:15,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:47:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:15,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:47:15,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:15,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:47:15,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:16,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:47:16,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:16,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:47:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:16,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:47:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:16,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:47:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:16,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:47:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:16,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:47:16,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:16,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:47:16,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:16,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:47:16,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:16,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:47:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:16,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 19:47:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:16,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 19:47:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:16,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 19:47:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:16,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 19:47:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:16,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 19:47:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:16,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 19:47:16,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:16,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 19:47:16,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:16,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:47:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:16,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:47:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:16,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:47:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:16,051 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 36 proven. 36 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2022-01-31 19:47:16,051 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:47:16,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128568932] [2022-01-31 19:47:16,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1128568932] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:47:16,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:47:16,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-01-31 19:47:16,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861374952] [2022-01-31 19:47:16,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:47:16,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-31 19:47:16,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:47:16,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-31 19:47:16,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1107, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 19:47:16,052 INFO L87 Difference]: Start difference. First operand 152 states and 166 transitions. Second operand has 35 states, 34 states have (on average 2.5294117647058822) internal successors, (86), 31 states have internal predecessors, (86), 24 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 24 states have call predecessors, (25), 23 states have call successors, (25) [2022-01-31 19:47:17,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:47:17,803 INFO L93 Difference]: Finished difference Result 223 states and 253 transitions. [2022-01-31 19:47:17,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-31 19:47:17,803 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.5294117647058822) internal successors, (86), 31 states have internal predecessors, (86), 24 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 24 states have call predecessors, (25), 23 states have call successors, (25) Word has length 201 [2022-01-31 19:47:17,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:47:17,804 INFO L225 Difference]: With dead ends: 223 [2022-01-31 19:47:17,804 INFO L226 Difference]: Without dead ends: 221 [2022-01-31 19:47:17,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 818 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=358, Invalid=4198, Unknown=0, NotChecked=0, Total=4556 [2022-01-31 19:47:17,805 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 251 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 4105 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 4368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 4105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:47:17,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 154 Invalid, 4368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 4105 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 19:47:17,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-01-31 19:47:17,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 203. [2022-01-31 19:47:17,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 149 states have (on average 1.0201342281879195) internal successors, (152), 151 states have internal predecessors, (152), 39 states have call successors, (39), 15 states have call predecessors, (39), 14 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2022-01-31 19:47:17,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 229 transitions. [2022-01-31 19:47:17,885 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 229 transitions. Word has length 201 [2022-01-31 19:47:17,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:47:17,886 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 229 transitions. [2022-01-31 19:47:17,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.5294117647058822) internal successors, (86), 31 states have internal predecessors, (86), 24 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 24 states have call predecessors, (25), 23 states have call successors, (25) [2022-01-31 19:47:17,886 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 229 transitions. [2022-01-31 19:47:17,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-01-31 19:47:17,886 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:47:17,887 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:47:17,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-31 19:47:17,887 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:47:17,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:47:17,887 INFO L85 PathProgramCache]: Analyzing trace with hash 778984318, now seen corresponding path program 40 times [2022-01-31 19:47:17,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:47:17,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041227819] [2022-01-31 19:47:17,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:47:17,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:47:17,888 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:47:17,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:18,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:47:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:18,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:47:18,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:18,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:47:18,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:18,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:47:18,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:18,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:47:18,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:18,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:47:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:18,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:47:18,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:18,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:47:18,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:18,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:47:18,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:18,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:47:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:18,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:47:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:18,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:47:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:18,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:47:18,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:18,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:47:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:18,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:47:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:18,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 19:47:18,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:18,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 19:47:18,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:18,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 19:47:18,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:18,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 19:47:18,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:18,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 19:47:18,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:18,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 19:47:18,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:18,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 19:47:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:18,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:47:18,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:18,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:47:18,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:18,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:47:18,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:18,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:47:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:18,644 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 39 proven. 33 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2022-01-31 19:47:18,645 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:47:18,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041227819] [2022-01-31 19:47:18,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1041227819] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:47:18,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:47:18,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-31 19:47:18,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849764865] [2022-01-31 19:47:18,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:47:18,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-31 19:47:18,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:47:18,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-31 19:47:18,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1140, Unknown=0, NotChecked=0, Total=1260 [2022-01-31 19:47:18,646 INFO L87 Difference]: Start difference. First operand 203 states and 229 transitions. Second operand has 36 states, 34 states have (on average 2.6176470588235294) internal successors, (89), 32 states have internal predecessors, (89), 26 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 25 states have call predecessors, (26), 25 states have call successors, (26) [2022-01-31 19:47:20,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:47:20,305 INFO L93 Difference]: Finished difference Result 231 states and 261 transitions. [2022-01-31 19:47:20,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-31 19:47:20,306 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 2.6176470588235294) internal successors, (89), 32 states have internal predecessors, (89), 26 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 25 states have call predecessors, (26), 25 states have call successors, (26) Word has length 209 [2022-01-31 19:47:20,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:47:20,307 INFO L225 Difference]: With dead ends: 231 [2022-01-31 19:47:20,307 INFO L226 Difference]: Without dead ends: 229 [2022-01-31 19:47:20,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1177 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=442, Invalid=4528, Unknown=0, NotChecked=0, Total=4970 [2022-01-31 19:47:20,307 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 320 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 3218 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 3539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 3218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:47:20,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 98 Invalid, 3539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 3218 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 19:47:20,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-01-31 19:47:20,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 211. [2022-01-31 19:47:20,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 155 states have (on average 1.0193548387096774) internal successors, (158), 157 states have internal predecessors, (158), 40 states have call successors, (40), 16 states have call predecessors, (40), 15 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) [2022-01-31 19:47:20,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 237 transitions. [2022-01-31 19:47:20,397 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 237 transitions. Word has length 209 [2022-01-31 19:47:20,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:47:20,397 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 237 transitions. [2022-01-31 19:47:20,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 2.6176470588235294) internal successors, (89), 32 states have internal predecessors, (89), 26 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 25 states have call predecessors, (26), 25 states have call successors, (26) [2022-01-31 19:47:20,397 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 237 transitions. [2022-01-31 19:47:20,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-01-31 19:47:20,398 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:47:20,398 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 13, 13, 13, 13, 13, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:47:20,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-31 19:47:20,398 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:47:20,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:47:20,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1054151167, now seen corresponding path program 41 times [2022-01-31 19:47:20,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:47:20,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908147578] [2022-01-31 19:47:20,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:47:20,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:47:20,400 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:47:20,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:20,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:47:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:20,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:47:20,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:20,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:47:20,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:20,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:47:20,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:20,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:47:20,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:20,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:47:20,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:20,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:47:20,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:20,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:47:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:20,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:47:20,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:20,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:47:20,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:20,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:47:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:20,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:47:20,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:20,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:47:20,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:20,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:47:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:20,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:47:20,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:20,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:47:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:20,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 19:47:20,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:20,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 19:47:20,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:20,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 19:47:20,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:20,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 19:47:20,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:20,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 19:47:20,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:20,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 19:47:20,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:20,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:47:20,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:20,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:47:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:20,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:47:20,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:20,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:47:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:20,953 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 36 proven. 42 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2022-01-31 19:47:20,953 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:47:20,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908147578] [2022-01-31 19:47:20,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1908147578] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:47:20,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:47:20,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-31 19:47:20,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412572685] [2022-01-31 19:47:20,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:47:20,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-31 19:47:20,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:47:20,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-31 19:47:20,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1173, Unknown=0, NotChecked=0, Total=1260 [2022-01-31 19:47:20,955 INFO L87 Difference]: Start difference. First operand 211 states and 237 transitions. Second operand has 36 states, 35 states have (on average 2.5428571428571427) internal successors, (89), 32 states have internal predecessors, (89), 25 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 25 states have call predecessors, (26), 24 states have call successors, (26) [2022-01-31 19:47:23,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:47:23,150 INFO L93 Difference]: Finished difference Result 223 states and 249 transitions. [2022-01-31 19:47:23,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-31 19:47:23,151 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.5428571428571427) internal successors, (89), 32 states have internal predecessors, (89), 25 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 25 states have call predecessors, (26), 24 states have call successors, (26) Word has length 209 [2022-01-31 19:47:23,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:47:23,152 INFO L225 Difference]: With dead ends: 223 [2022-01-31 19:47:23,152 INFO L226 Difference]: Without dead ends: 221 [2022-01-31 19:47:23,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=333, Invalid=4223, Unknown=0, NotChecked=0, Total=4556 [2022-01-31 19:47:23,152 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 157 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 3976 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 4147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 3976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-31 19:47:23,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 173 Invalid, 4147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 3976 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-31 19:47:23,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-01-31 19:47:23,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 211. [2022-01-31 19:47:23,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 155 states have (on average 1.0193548387096774) internal successors, (158), 157 states have internal predecessors, (158), 40 states have call successors, (40), 16 states have call predecessors, (40), 15 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) [2022-01-31 19:47:23,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 237 transitions. [2022-01-31 19:47:23,246 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 237 transitions. Word has length 209 [2022-01-31 19:47:23,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:47:23,246 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 237 transitions. [2022-01-31 19:47:23,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.5428571428571427) internal successors, (89), 32 states have internal predecessors, (89), 25 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 25 states have call predecessors, (26), 24 states have call successors, (26) [2022-01-31 19:47:23,246 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 237 transitions. [2022-01-31 19:47:23,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-01-31 19:47:23,247 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:47:23,247 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:47:23,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-31 19:47:23,247 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:47:23,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:47:23,248 INFO L85 PathProgramCache]: Analyzing trace with hash 900184396, now seen corresponding path program 42 times [2022-01-31 19:47:23,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:47:23,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979195204] [2022-01-31 19:47:23,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:47:23,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:47:23,249 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:47:23,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:23,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:47:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:23,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:47:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:23,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:47:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:23,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:47:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:23,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:47:23,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:23,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:47:23,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:23,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:47:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:23,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:47:23,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:23,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:47:23,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:23,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:47:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:23,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:47:23,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:23,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:47:23,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:23,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:47:23,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:23,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:47:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:23,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:47:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:23,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 19:47:23,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:23,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 19:47:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:23,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 19:47:23,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:23,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 19:47:23,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:23,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 19:47:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:23,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 19:47:23,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:23,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 19:47:23,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:23,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:47:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:23,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:47:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:23,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:47:23,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:23,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:47:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:23,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:47:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:23,547 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-01-31 19:47:23,547 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:47:23,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979195204] [2022-01-31 19:47:23,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1979195204] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:47:23,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:47:23,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-01-31 19:47:23,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626401700] [2022-01-31 19:47:23,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:47:23,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-31 19:47:23,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:47:23,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-31 19:47:23,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=655, Unknown=0, NotChecked=0, Total=870 [2022-01-31 19:47:23,548 INFO L87 Difference]: Start difference. First operand 211 states and 237 transitions. Second operand has 30 states, 30 states have (on average 2.966666666666667) internal successors, (89), 29 states have internal predecessors, (89), 26 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 25 states have call predecessors, (27), 25 states have call successors, (27) [2022-01-31 19:47:24,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:47:24,338 INFO L93 Difference]: Finished difference Result 241 states and 271 transitions. [2022-01-31 19:47:24,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-31 19:47:24,339 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.966666666666667) internal successors, (89), 29 states have internal predecessors, (89), 26 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 25 states have call predecessors, (27), 25 states have call successors, (27) Word has length 217 [2022-01-31 19:47:24,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:47:24,340 INFO L225 Difference]: With dead ends: 241 [2022-01-31 19:47:24,340 INFO L226 Difference]: Without dead ends: 177 [2022-01-31 19:47:24,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=752, Invalid=2440, Unknown=0, NotChecked=0, Total=3192 [2022-01-31 19:47:24,341 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 263 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 19:47:24,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 86 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 19:47:24,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-01-31 19:47:24,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 164. [2022-01-31 19:47:24,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 120 states have (on average 1.0166666666666666) internal successors, (122), 121 states have internal predecessors, (122), 29 states have call successors, (29), 15 states have call predecessors, (29), 14 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2022-01-31 19:47:24,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 179 transitions. [2022-01-31 19:47:24,408 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 179 transitions. Word has length 217 [2022-01-31 19:47:24,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:47:24,408 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 179 transitions. [2022-01-31 19:47:24,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.966666666666667) internal successors, (89), 29 states have internal predecessors, (89), 26 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 25 states have call predecessors, (27), 25 states have call successors, (27) [2022-01-31 19:47:24,408 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 179 transitions. [2022-01-31 19:47:24,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-01-31 19:47:24,409 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:47:24,409 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 13, 13, 13, 13, 13, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:47:24,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-31 19:47:24,409 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:47:24,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:47:24,409 INFO L85 PathProgramCache]: Analyzing trace with hash -579576115, now seen corresponding path program 43 times [2022-01-31 19:47:24,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:47:24,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468616509] [2022-01-31 19:47:24,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:47:24,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:47:24,411 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:47:24,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:25,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:47:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:25,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:47:25,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:25,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:47:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:25,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:47:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:25,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:47:25,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:25,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:47:25,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:25,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:47:25,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:25,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:47:25,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:25,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:47:25,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:25,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:47:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:25,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:47:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:25,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:47:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:25,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:47:25,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:25,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:47:25,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:25,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:47:25,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:25,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:47:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:25,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 19:47:25,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:25,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 19:47:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:25,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 19:47:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:25,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 19:47:25,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:25,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 19:47:25,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:25,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 19:47:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:25,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:47:25,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:25,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:47:25,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:25,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:47:25,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:25,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:47:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:25,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:47:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:25,154 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 39 proven. 39 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2022-01-31 19:47:25,154 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:47:25,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468616509] [2022-01-31 19:47:25,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1468616509] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:47:25,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:47:25,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-01-31 19:47:25,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133727233] [2022-01-31 19:47:25,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:47:25,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-31 19:47:25,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:47:25,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-31 19:47:25,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1267, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 19:47:25,155 INFO L87 Difference]: Start difference. First operand 164 states and 179 transitions. Second operand has 38 states, 36 states have (on average 2.5555555555555554) internal successors, (92), 34 states have internal predecessors, (92), 27 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 26 states have call predecessors, (27), 26 states have call successors, (27) [2022-01-31 19:47:27,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:47:27,295 INFO L93 Difference]: Finished difference Result 239 states and 271 transitions. [2022-01-31 19:47:27,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-31 19:47:27,295 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 2.5555555555555554) internal successors, (92), 34 states have internal predecessors, (92), 27 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 26 states have call predecessors, (27), 26 states have call successors, (27) Word has length 217 [2022-01-31 19:47:27,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:47:27,297 INFO L225 Difference]: With dead ends: 239 [2022-01-31 19:47:27,297 INFO L226 Difference]: Without dead ends: 237 [2022-01-31 19:47:27,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1316 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=496, Invalid=4906, Unknown=0, NotChecked=0, Total=5402 [2022-01-31 19:47:27,303 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 292 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 3694 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 4005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 3694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:47:27,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 130 Invalid, 4005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 3694 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-31 19:47:27,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-01-31 19:47:27,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 219. [2022-01-31 19:47:27,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 161 states have (on average 1.0186335403726707) internal successors, (164), 163 states have internal predecessors, (164), 42 states have call successors, (42), 16 states have call predecessors, (42), 15 states have return successors, (41), 39 states have call predecessors, (41), 41 states have call successors, (41) [2022-01-31 19:47:27,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 247 transitions. [2022-01-31 19:47:27,422 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 247 transitions. Word has length 217 [2022-01-31 19:47:27,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:47:27,422 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 247 transitions. [2022-01-31 19:47:27,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 2.5555555555555554) internal successors, (92), 34 states have internal predecessors, (92), 27 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 26 states have call predecessors, (27), 26 states have call successors, (27) [2022-01-31 19:47:27,422 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 247 transitions. [2022-01-31 19:47:27,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-01-31 19:47:27,423 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:47:27,423 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:47:27,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-31 19:47:27,423 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:47:27,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:47:27,424 INFO L85 PathProgramCache]: Analyzing trace with hash 219741595, now seen corresponding path program 44 times [2022-01-31 19:47:27,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:47:27,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516429096] [2022-01-31 19:47:27,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:47:27,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:47:27,425 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:47:27,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:27,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:47:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:27,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:47:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:27,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:47:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:27,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:47:27,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:27,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:47:27,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:27,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:47:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:27,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:47:27,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:27,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:47:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:28,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:47:28,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:28,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:47:28,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:28,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:47:28,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:28,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:47:28,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:28,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:47:28,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:28,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:47:28,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:28,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:47:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:28,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:47:28,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:28,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 19:47:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:28,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 19:47:28,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:28,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 19:47:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:28,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 19:47:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:28,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 19:47:28,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:28,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 19:47:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:28,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:47:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:28,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:47:28,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:28,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:47:28,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:28,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:47:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:28,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:47:28,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:28,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:47:28,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:28,049 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 42 proven. 36 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2022-01-31 19:47:28,049 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:47:28,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516429096] [2022-01-31 19:47:28,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [516429096] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:47:28,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:47:28,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-01-31 19:47:28,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620154307] [2022-01-31 19:47:28,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:47:28,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-31 19:47:28,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:47:28,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-31 19:47:28,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1317, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 19:47:28,050 INFO L87 Difference]: Start difference. First operand 219 states and 247 transitions. Second operand has 38 states, 37 states have (on average 2.5675675675675675) internal successors, (95), 34 states have internal predecessors, (95), 27 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 27 states have call predecessors, (28), 26 states have call successors, (28) [2022-01-31 19:47:30,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:47:30,130 INFO L93 Difference]: Finished difference Result 247 states and 279 transitions. [2022-01-31 19:47:30,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-31 19:47:30,130 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.5675675675675675) internal successors, (95), 34 states have internal predecessors, (95), 27 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 27 states have call predecessors, (28), 26 states have call successors, (28) Word has length 225 [2022-01-31 19:47:30,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:47:30,131 INFO L225 Difference]: With dead ends: 247 [2022-01-31 19:47:30,131 INFO L226 Difference]: Without dead ends: 245 [2022-01-31 19:47:30,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 978 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=368, Invalid=5034, Unknown=0, NotChecked=0, Total=5402 [2022-01-31 19:47:30,139 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 275 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 5356 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 5641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 5356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-31 19:47:30,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 173 Invalid, 5641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 5356 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-31 19:47:30,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-01-31 19:47:30,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 227. [2022-01-31 19:47:30,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 167 states have (on average 1.0179640718562875) internal successors, (170), 169 states have internal predecessors, (170), 43 states have call successors, (43), 17 states have call predecessors, (43), 16 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2022-01-31 19:47:30,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 255 transitions. [2022-01-31 19:47:30,271 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 255 transitions. Word has length 225 [2022-01-31 19:47:30,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:47:30,271 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 255 transitions. [2022-01-31 19:47:30,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.5675675675675675) internal successors, (95), 34 states have internal predecessors, (95), 27 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 27 states have call predecessors, (28), 26 states have call successors, (28) [2022-01-31 19:47:30,271 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 255 transitions. [2022-01-31 19:47:30,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-01-31 19:47:30,272 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:47:30,272 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 14, 14, 14, 14, 14, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:47:30,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-31 19:47:30,272 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:47:30,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:47:30,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1260018916, now seen corresponding path program 45 times [2022-01-31 19:47:30,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:47:30,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196068893] [2022-01-31 19:47:30,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:47:30,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:47:30,274 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:47:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:30,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:47:30,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:30,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:47:30,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:30,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:47:30,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:31,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:47:31,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:31,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:47:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:31,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:47:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:31,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:47:31,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:31,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:47:31,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:31,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:47:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:31,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:47:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:31,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:47:31,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:31,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:47:31,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:31,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:47:31,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:31,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:47:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:31,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:47:31,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:31,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:47:31,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:31,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:47:31,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:31,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 19:47:31,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:31,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 19:47:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:31,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 19:47:31,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:31,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 19:47:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:31,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 19:47:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:31,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:47:31,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:31,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:47:31,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:31,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:47:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:31,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:47:31,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:31,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:47:31,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:31,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:47:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:31,069 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 39 proven. 45 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-01-31 19:47:31,069 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:47:31,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196068893] [2022-01-31 19:47:31,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [196068893] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:47:31,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:47:31,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-01-31 19:47:31,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657205646] [2022-01-31 19:47:31,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:47:31,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-31 19:47:31,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:47:31,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-31 19:47:31,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1412, Unknown=0, NotChecked=0, Total=1560 [2022-01-31 19:47:31,070 INFO L87 Difference]: Start difference. First operand 227 states and 255 transitions. Second operand has 40 states, 37 states have (on average 2.5675675675675675) internal successors, (95), 36 states have internal predecessors, (95), 28 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2022-01-31 19:47:32,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:47:32,978 INFO L93 Difference]: Finished difference Result 239 states and 267 transitions. [2022-01-31 19:47:32,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-31 19:47:32,979 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 37 states have (on average 2.5675675675675675) internal successors, (95), 36 states have internal predecessors, (95), 28 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) Word has length 225 [2022-01-31 19:47:32,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:47:32,980 INFO L225 Difference]: With dead ends: 239 [2022-01-31 19:47:32,980 INFO L226 Difference]: Without dead ends: 237 [2022-01-31 19:47:32,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1372 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=477, Invalid=5073, Unknown=0, NotChecked=0, Total=5550 [2022-01-31 19:47:32,981 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 189 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 3787 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 3993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 3787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:47:32,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 159 Invalid, 3993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 3787 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-31 19:47:32,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-01-31 19:47:33,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 227. [2022-01-31 19:47:33,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 167 states have (on average 1.0179640718562875) internal successors, (170), 169 states have internal predecessors, (170), 43 states have call successors, (43), 17 states have call predecessors, (43), 16 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2022-01-31 19:47:33,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 255 transitions. [2022-01-31 19:47:33,081 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 255 transitions. Word has length 225 [2022-01-31 19:47:33,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:47:33,082 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 255 transitions. [2022-01-31 19:47:33,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 37 states have (on average 2.5675675675675675) internal successors, (95), 36 states have internal predecessors, (95), 28 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2022-01-31 19:47:33,082 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 255 transitions. [2022-01-31 19:47:33,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-01-31 19:47:33,083 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:47:33,083 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:47:33,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-31 19:47:33,083 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:47:33,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:47:33,083 INFO L85 PathProgramCache]: Analyzing trace with hash -464458135, now seen corresponding path program 46 times [2022-01-31 19:47:33,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:47:33,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305414103] [2022-01-31 19:47:33,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:47:33,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:47:33,085 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:47:33,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:33,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:47:33,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:33,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:47:33,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:33,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:47:33,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:33,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:47:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:33,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:47:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:33,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:47:33,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:33,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:47:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:33,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:47:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:33,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:47:33,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:33,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:47:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:33,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:47:33,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:33,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:47:33,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:33,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:47:33,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:33,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:47:33,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:33,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:47:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:33,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:47:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:33,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 19:47:33,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:33,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 19:47:33,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:33,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 19:47:33,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:33,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 19:47:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:33,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 19:47:33,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:33,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 19:47:33,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:33,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:47:33,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:33,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:47:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:33,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:47:33,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:33,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:47:33,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:33,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:47:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:33,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:47:33,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:33,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:47:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:33,512 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-01-31 19:47:33,512 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:47:33,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305414103] [2022-01-31 19:47:33,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1305414103] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:47:33,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:47:33,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-31 19:47:33,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499478823] [2022-01-31 19:47:33,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:47:33,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-31 19:47:33,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:47:33,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-31 19:47:33,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2022-01-31 19:47:33,513 INFO L87 Difference]: Start difference. First operand 227 states and 255 transitions. Second operand has 32 states, 32 states have (on average 2.96875) internal successors, (95), 31 states have internal predecessors, (95), 28 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 27 states have call predecessors, (29), 27 states have call successors, (29) [2022-01-31 19:47:34,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:47:34,432 INFO L93 Difference]: Finished difference Result 257 states and 289 transitions. [2022-01-31 19:47:34,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-31 19:47:34,433 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.96875) internal successors, (95), 31 states have internal predecessors, (95), 28 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 27 states have call predecessors, (29), 27 states have call successors, (29) Word has length 233 [2022-01-31 19:47:34,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:47:34,434 INFO L225 Difference]: With dead ends: 257 [2022-01-31 19:47:34,434 INFO L226 Difference]: Without dead ends: 189 [2022-01-31 19:47:34,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 913 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=858, Invalid=2802, Unknown=0, NotChecked=0, Total=3660 [2022-01-31 19:47:34,435 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 313 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 346 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 19:47:34,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 78 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [346 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 19:47:34,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-01-31 19:47:34,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 176. [2022-01-31 19:47:34,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 129 states have (on average 1.0155038759689923) internal successors, (131), 130 states have internal predecessors, (131), 31 states have call successors, (31), 16 states have call predecessors, (31), 15 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2022-01-31 19:47:34,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 192 transitions. [2022-01-31 19:47:34,510 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 192 transitions. Word has length 233 [2022-01-31 19:47:34,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:47:34,510 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 192 transitions. [2022-01-31 19:47:34,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.96875) internal successors, (95), 31 states have internal predecessors, (95), 28 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 27 states have call predecessors, (29), 27 states have call successors, (29) [2022-01-31 19:47:34,510 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 192 transitions. [2022-01-31 19:47:34,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-01-31 19:47:34,511 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:47:34,511 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 14, 14, 14, 14, 14, 13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:47:34,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-01-31 19:47:34,511 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:47:34,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:47:34,512 INFO L85 PathProgramCache]: Analyzing trace with hash -769359126, now seen corresponding path program 47 times [2022-01-31 19:47:34,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:47:34,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423708942] [2022-01-31 19:47:34,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:47:34,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:47:34,513 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:47:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:35,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:47:35,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:35,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:47:35,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:35,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:47:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:35,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:47:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:35,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:47:35,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:35,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:47:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:35,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:47:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:35,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:47:35,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:35,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:47:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:35,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:47:35,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:35,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:47:35,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:35,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:47:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:35,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:47:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:35,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:47:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:35,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:47:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:35,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:47:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:35,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:47:35,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:35,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 19:47:35,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:35,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 19:47:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:35,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 19:47:35,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:35,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 19:47:35,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:35,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 19:47:35,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:35,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:47:35,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:35,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:47:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:35,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:47:35,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:35,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:47:35,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:35,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:47:35,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:35,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:47:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:35,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:47:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:35,199 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 42 proven. 42 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-01-31 19:47:35,199 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:47:35,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423708942] [2022-01-31 19:47:35,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [423708942] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:47:35,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:47:35,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-01-31 19:47:35,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219879938] [2022-01-31 19:47:35,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:47:35,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-31 19:47:35,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:47:35,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-31 19:47:35,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1389, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 19:47:35,201 INFO L87 Difference]: Start difference. First operand 176 states and 192 transitions. Second operand has 39 states, 38 states have (on average 2.5789473684210527) internal successors, (98), 35 states have internal predecessors, (98), 28 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (29), 28 states have call predecessors, (29), 27 states have call successors, (29) [2022-01-31 19:47:37,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:47:37,592 INFO L93 Difference]: Finished difference Result 255 states and 289 transitions. [2022-01-31 19:47:37,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-31 19:47:37,592 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 2.5789473684210527) internal successors, (98), 35 states have internal predecessors, (98), 28 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (29), 28 states have call predecessors, (29), 27 states have call successors, (29) Word has length 233 [2022-01-31 19:47:37,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:47:37,594 INFO L225 Difference]: With dead ends: 255 [2022-01-31 19:47:37,594 INFO L226 Difference]: Without dead ends: 253 [2022-01-31 19:47:37,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=404, Invalid=5296, Unknown=0, NotChecked=0, Total=5700 [2022-01-31 19:47:37,595 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 272 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 5633 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 5924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 5633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-31 19:47:37,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 187 Invalid, 5924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 5633 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-31 19:47:37,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-01-31 19:47:37,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 235. [2022-01-31 19:47:37,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 173 states have (on average 1.0173410404624277) internal successors, (176), 175 states have internal predecessors, (176), 45 states have call successors, (45), 17 states have call predecessors, (45), 16 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2022-01-31 19:47:37,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 265 transitions. [2022-01-31 19:47:37,719 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 265 transitions. Word has length 233 [2022-01-31 19:47:37,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:47:37,719 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 265 transitions. [2022-01-31 19:47:37,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 2.5789473684210527) internal successors, (98), 35 states have internal predecessors, (98), 28 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (29), 28 states have call predecessors, (29), 27 states have call successors, (29) [2022-01-31 19:47:37,720 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 265 transitions. [2022-01-31 19:47:37,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-01-31 19:47:37,720 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:47:37,721 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:47:37,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-01-31 19:47:37,721 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:47:37,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:47:37,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1121602376, now seen corresponding path program 48 times [2022-01-31 19:47:37,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:47:37,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076412104] [2022-01-31 19:47:37,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:47:37,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:47:37,722 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:47:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:38,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:47:38,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:38,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:47:38,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:38,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:47:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:38,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:47:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:38,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:47:38,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:38,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:47:38,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:38,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:47:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:38,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:47:38,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:38,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:47:38,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:38,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:47:38,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:38,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:47:38,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:38,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:47:38,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:38,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:47:38,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:38,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:47:38,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:38,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:47:38,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:38,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:47:38,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:38,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:47:38,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:38,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 19:47:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:38,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 19:47:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:38,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 19:47:38,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:38,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 19:47:38,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:38,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 19:47:38,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:38,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:47:38,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:38,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:47:38,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:38,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:47:38,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:38,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:47:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:38,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:47:38,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:38,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:47:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:38,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:47:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:38,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:47:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:38,395 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 45 proven. 39 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-01-31 19:47:38,395 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:47:38,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076412104] [2022-01-31 19:47:38,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1076412104] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:47:38,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:47:38,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-01-31 19:47:38,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224708615] [2022-01-31 19:47:38,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:47:38,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-31 19:47:38,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:47:38,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-31 19:47:38,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1466, Unknown=0, NotChecked=0, Total=1560 [2022-01-31 19:47:38,396 INFO L87 Difference]: Start difference. First operand 235 states and 265 transitions. Second operand has 40 states, 39 states have (on average 2.58974358974359) internal successors, (101), 36 states have internal predecessors, (101), 29 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 29 states have call predecessors, (30), 28 states have call successors, (30) [2022-01-31 19:47:41,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:47:41,198 INFO L93 Difference]: Finished difference Result 263 states and 297 transitions. [2022-01-31 19:47:41,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-31 19:47:41,198 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.58974358974359) internal successors, (101), 36 states have internal predecessors, (101), 29 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 29 states have call predecessors, (30), 28 states have call successors, (30) Word has length 241 [2022-01-31 19:47:41,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:47:41,199 INFO L225 Difference]: With dead ends: 263 [2022-01-31 19:47:41,199 INFO L226 Difference]: Without dead ends: 261 [2022-01-31 19:47:41,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=389, Invalid=5617, Unknown=0, NotChecked=0, Total=6006 [2022-01-31 19:47:41,200 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 303 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 5693 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 6009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 5693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-31 19:47:41,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 162 Invalid, 6009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 5693 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-31 19:47:41,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-01-31 19:47:41,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 243. [2022-01-31 19:47:41,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 179 states have (on average 1.0167597765363128) internal successors, (182), 181 states have internal predecessors, (182), 46 states have call successors, (46), 18 states have call predecessors, (46), 17 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45) [2022-01-31 19:47:41,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 273 transitions. [2022-01-31 19:47:41,317 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 273 transitions. Word has length 241 [2022-01-31 19:47:41,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:47:41,317 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 273 transitions. [2022-01-31 19:47:41,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.58974358974359) internal successors, (101), 36 states have internal predecessors, (101), 29 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 29 states have call predecessors, (30), 28 states have call successors, (30) [2022-01-31 19:47:41,318 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 273 transitions. [2022-01-31 19:47:41,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-01-31 19:47:41,318 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:47:41,318 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 15, 15, 15, 15, 15, 13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:47:41,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-31 19:47:41,319 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:47:41,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:47:41,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1426503367, now seen corresponding path program 49 times [2022-01-31 19:47:41,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:47:41,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766366143] [2022-01-31 19:47:41,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:47:41,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:47:41,320 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:47:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:41,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:47:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:41,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:47:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:41,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:47:41,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:41,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:47:41,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:41,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:47:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:41,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:47:41,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:41,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:47:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:41,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:47:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:41,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:47:41,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:41,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:47:41,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:41,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:47:41,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:41,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:47:41,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:41,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:47:41,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:41,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:47:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:41,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:47:41,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:41,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:47:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:41,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:47:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:41,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:47:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:41,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 19:47:41,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:41,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 19:47:41,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:41,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 19:47:41,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:41,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 19:47:41,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:41,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:47:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:41,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:47:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:41,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:47:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:41,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:47:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:41,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:47:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:41,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:47:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:41,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:47:41,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:41,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:47:41,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:41,993 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 42 proven. 48 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2022-01-31 19:47:41,993 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:47:41,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766366143] [2022-01-31 19:47:41,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [766366143] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:47:41,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:47:41,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-01-31 19:47:41,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951439418] [2022-01-31 19:47:41,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:47:41,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-31 19:47:41,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:47:41,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-31 19:47:41,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1463, Unknown=0, NotChecked=0, Total=1560 [2022-01-31 19:47:41,994 INFO L87 Difference]: Start difference. First operand 243 states and 273 transitions. Second operand has 40 states, 39 states have (on average 2.58974358974359) internal successors, (101), 36 states have internal predecessors, (101), 29 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 29 states have call predecessors, (30), 28 states have call successors, (30) [2022-01-31 19:47:44,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:47:44,606 INFO L93 Difference]: Finished difference Result 255 states and 285 transitions. [2022-01-31 19:47:44,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-31 19:47:44,606 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.58974358974359) internal successors, (101), 36 states have internal predecessors, (101), 29 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 29 states have call predecessors, (30), 28 states have call successors, (30) Word has length 241 [2022-01-31 19:47:44,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:47:44,623 INFO L225 Difference]: With dead ends: 255 [2022-01-31 19:47:44,623 INFO L226 Difference]: Without dead ends: 253 [2022-01-31 19:47:44,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1042 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=375, Invalid=5325, Unknown=0, NotChecked=0, Total=5700 [2022-01-31 19:47:44,624 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 177 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 5076 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 5273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 5076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-31 19:47:44,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 199 Invalid, 5273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 5076 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-31 19:47:44,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-01-31 19:47:44,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 243. [2022-01-31 19:47:44,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 179 states have (on average 1.0167597765363128) internal successors, (182), 181 states have internal predecessors, (182), 46 states have call successors, (46), 18 states have call predecessors, (46), 17 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45) [2022-01-31 19:47:44,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 273 transitions. [2022-01-31 19:47:44,768 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 273 transitions. Word has length 241 [2022-01-31 19:47:44,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:47:44,768 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 273 transitions. [2022-01-31 19:47:44,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.58974358974359) internal successors, (101), 36 states have internal predecessors, (101), 29 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 29 states have call predecessors, (30), 28 states have call successors, (30) [2022-01-31 19:47:44,768 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 273 transitions. [2022-01-31 19:47:44,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-01-31 19:47:44,781 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:47:44,781 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:47:44,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-01-31 19:47:44,782 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:47:44,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:47:44,782 INFO L85 PathProgramCache]: Analyzing trace with hash 2138519686, now seen corresponding path program 50 times [2022-01-31 19:47:44,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:47:44,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908112286] [2022-01-31 19:47:44,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:47:44,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:47:44,783 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:47:44,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:45,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:47:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:45,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:47:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:45,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:47:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:45,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:47:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:45,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:47:45,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:45,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:47:45,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:45,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:47:45,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:45,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:47:45,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:45,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:47:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:45,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:47:45,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:45,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:47:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:45,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:47:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:45,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:47:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:45,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:47:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:45,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:47:45,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:45,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:47:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:45,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:47:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:45,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 19:47:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:45,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 19:47:45,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:45,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 19:47:45,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:45,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 19:47:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:45,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 19:47:45,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:45,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:47:45,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:45,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:47:45,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:45,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:47:45,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:45,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:47:45,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:45,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:47:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:45,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:47:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:45,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:47:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:45,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:47:45,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:45,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:47:45,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:45,107 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-01-31 19:47:45,107 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:47:45,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908112286] [2022-01-31 19:47:45,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [908112286] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:47:45,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:47:45,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-01-31 19:47:45,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485813263] [2022-01-31 19:47:45,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:47:45,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-31 19:47:45,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:47:45,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-31 19:47:45,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=845, Unknown=0, NotChecked=0, Total=1122 [2022-01-31 19:47:45,108 INFO L87 Difference]: Start difference. First operand 243 states and 273 transitions. Second operand has 34 states, 34 states have (on average 2.9705882352941178) internal successors, (101), 33 states have internal predecessors, (101), 30 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 29 states have call predecessors, (31), 29 states have call successors, (31) [2022-01-31 19:47:45,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:47:45,784 INFO L93 Difference]: Finished difference Result 273 states and 307 transitions. [2022-01-31 19:47:45,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-31 19:47:45,784 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.9705882352941178) internal successors, (101), 33 states have internal predecessors, (101), 30 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 29 states have call predecessors, (31), 29 states have call successors, (31) Word has length 249 [2022-01-31 19:47:45,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:47:45,785 INFO L225 Difference]: With dead ends: 273 [2022-01-31 19:47:45,785 INFO L226 Difference]: Without dead ends: 201 [2022-01-31 19:47:45,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=971, Invalid=3189, Unknown=0, NotChecked=0, Total=4160 [2022-01-31 19:47:45,786 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 299 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 903 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:47:45,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 95 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 903 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:47:45,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-01-31 19:47:45,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 188. [2022-01-31 19:47:45,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 138 states have (on average 1.0144927536231885) internal successors, (140), 139 states have internal predecessors, (140), 33 states have call successors, (33), 17 states have call predecessors, (33), 16 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2022-01-31 19:47:45,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 205 transitions. [2022-01-31 19:47:45,863 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 205 transitions. Word has length 249 [2022-01-31 19:47:45,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:47:45,864 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 205 transitions. [2022-01-31 19:47:45,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.9705882352941178) internal successors, (101), 33 states have internal predecessors, (101), 30 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 29 states have call predecessors, (31), 29 states have call successors, (31) [2022-01-31 19:47:45,864 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 205 transitions. [2022-01-31 19:47:45,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-01-31 19:47:45,864 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:47:45,865 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 15, 15, 15, 15, 15, 14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:47:45,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-01-31 19:47:45,865 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:47:45,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:47:45,865 INFO L85 PathProgramCache]: Analyzing trace with hash 821214215, now seen corresponding path program 51 times [2022-01-31 19:47:45,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:47:45,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351374394] [2022-01-31 19:47:45,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:47:45,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:47:45,867 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:47:45,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:46,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:47:46,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:46,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:47:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:46,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:47:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:46,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:47:46,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:46,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:47:46,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:46,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:47:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:46,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:47:46,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:46,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:47:46,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:46,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:47:46,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:46,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:47:46,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:46,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:47:46,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:46,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:47:46,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:46,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:47:46,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:46,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:47:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:46,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:47:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:46,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:47:46,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:46,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:47:46,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:46,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:47:46,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:46,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 19:47:46,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:46,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 19:47:46,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:46,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 19:47:46,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:46,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 19:47:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:46,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:47:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:46,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:47:46,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:46,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:47:46,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:46,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:47:46,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:46,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:47:46,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:46,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:47:46,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:46,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:47:46,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:46,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:47:46,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:46,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:47:46,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:46,580 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2022-01-31 19:47:46,580 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:47:46,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351374394] [2022-01-31 19:47:46,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1351374394] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:47:46,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:47:46,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2022-01-31 19:47:46,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005006075] [2022-01-31 19:47:46,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:47:46,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-31 19:47:46,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:47:46,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-31 19:47:46,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1542, Unknown=0, NotChecked=0, Total=1640 [2022-01-31 19:47:46,582 INFO L87 Difference]: Start difference. First operand 188 states and 205 transitions. Second operand has 41 states, 40 states have (on average 2.6) internal successors, (104), 37 states have internal predecessors, (104), 30 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (31), 30 states have call predecessors, (31), 29 states have call successors, (31) [2022-01-31 19:47:49,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:47:49,589 INFO L93 Difference]: Finished difference Result 271 states and 307 transitions. [2022-01-31 19:47:49,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-31 19:47:49,590 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.6) internal successors, (104), 37 states have internal predecessors, (104), 30 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (31), 30 states have call predecessors, (31), 29 states have call successors, (31) Word has length 249 [2022-01-31 19:47:49,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:47:49,591 INFO L225 Difference]: With dead ends: 271 [2022-01-31 19:47:49,591 INFO L226 Difference]: Without dead ends: 269 [2022-01-31 19:47:49,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1148 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=427, Invalid=5893, Unknown=0, NotChecked=0, Total=6320 [2022-01-31 19:47:49,591 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 295 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 6368 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 6686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 6368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:47:49,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 220 Invalid, 6686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 6368 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-31 19:47:49,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-01-31 19:47:49,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 251. [2022-01-31 19:47:49,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 185 states have (on average 1.0162162162162163) internal successors, (188), 187 states have internal predecessors, (188), 48 states have call successors, (48), 18 states have call predecessors, (48), 17 states have return successors, (47), 45 states have call predecessors, (47), 47 states have call successors, (47) [2022-01-31 19:47:49,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 283 transitions. [2022-01-31 19:47:49,714 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 283 transitions. Word has length 249 [2022-01-31 19:47:49,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:47:49,714 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 283 transitions. [2022-01-31 19:47:49,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.6) internal successors, (104), 37 states have internal predecessors, (104), 30 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (31), 30 states have call predecessors, (31), 29 states have call successors, (31) [2022-01-31 19:47:49,714 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 283 transitions. [2022-01-31 19:47:49,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-01-31 19:47:49,715 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:47:49,715 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:47:49,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-01-31 19:47:49,715 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:47:49,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:47:49,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1986756821, now seen corresponding path program 52 times [2022-01-31 19:47:49,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:47:49,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273636878] [2022-01-31 19:47:49,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:47:49,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:47:49,717 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:47:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:50,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:47:50,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:50,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:47:50,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:50,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:47:50,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:50,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:47:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:50,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:47:50,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:50,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:47:50,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:50,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:47:50,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:50,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:47:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:50,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:47:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:50,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:47:50,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:50,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:47:50,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:50,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:47:50,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:50,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:47:50,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:50,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:47:50,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:50,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:47:50,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:50,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:47:50,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:50,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:47:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:50,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:47:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:50,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 19:47:50,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:50,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 19:47:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:50,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 19:47:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:50,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 19:47:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:50,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:47:50,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:50,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:47:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:50,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:47:50,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:50,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:47:50,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:50,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:47:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:50,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:47:50,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:50,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:47:50,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:50,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:47:50,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:50,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:47:50,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:50,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:47:50,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:50,538 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 48 proven. 42 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2022-01-31 19:47:50,538 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:47:50,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273636878] [2022-01-31 19:47:50,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [273636878] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:47:50,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:47:50,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-01-31 19:47:50,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195872555] [2022-01-31 19:47:50,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:47:50,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-31 19:47:50,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:47:50,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-31 19:47:50,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1623, Unknown=0, NotChecked=0, Total=1722 [2022-01-31 19:47:50,539 INFO L87 Difference]: Start difference. First operand 251 states and 283 transitions. Second operand has 42 states, 41 states have (on average 2.6097560975609757) internal successors, (107), 38 states have internal predecessors, (107), 31 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 31 states have call predecessors, (32), 30 states have call successors, (32) [2022-01-31 19:47:54,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:47:54,189 INFO L93 Difference]: Finished difference Result 279 states and 315 transitions. [2022-01-31 19:47:54,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-31 19:47:54,190 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.6097560975609757) internal successors, (107), 38 states have internal predecessors, (107), 31 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 31 states have call predecessors, (32), 30 states have call successors, (32) Word has length 257 [2022-01-31 19:47:54,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:47:54,191 INFO L225 Difference]: With dead ends: 279 [2022-01-31 19:47:54,191 INFO L226 Difference]: Without dead ends: 277 [2022-01-31 19:47:54,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1210 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=410, Invalid=6232, Unknown=0, NotChecked=0, Total=6642 [2022-01-31 19:47:54,191 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 268 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 7208 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 7496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 7208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-31 19:47:54,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 237 Invalid, 7496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 7208 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-31 19:47:54,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-01-31 19:47:54,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 259. [2022-01-31 19:47:54,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 191 states have (on average 1.0157068062827226) internal successors, (194), 193 states have internal predecessors, (194), 49 states have call successors, (49), 19 states have call predecessors, (49), 18 states have return successors, (48), 46 states have call predecessors, (48), 48 states have call successors, (48) [2022-01-31 19:47:54,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 291 transitions. [2022-01-31 19:47:54,351 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 291 transitions. Word has length 257 [2022-01-31 19:47:54,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:47:54,351 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 291 transitions. [2022-01-31 19:47:54,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.6097560975609757) internal successors, (107), 38 states have internal predecessors, (107), 31 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 31 states have call predecessors, (32), 30 states have call successors, (32) [2022-01-31 19:47:54,351 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 291 transitions. [2022-01-31 19:47:54,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-01-31 19:47:54,352 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:47:54,352 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 16, 16, 14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:47:54,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-01-31 19:47:54,352 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:47:54,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:47:54,352 INFO L85 PathProgramCache]: Analyzing trace with hash 669451350, now seen corresponding path program 53 times [2022-01-31 19:47:54,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:47:54,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051666243] [2022-01-31 19:47:54,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:47:54,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:47:54,354 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:47:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:54,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:47:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:54,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:47:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:54,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:47:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:55,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:47:55,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:55,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:47:55,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:55,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:47:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:55,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:47:55,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:55,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:47:55,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:55,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:47:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:55,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:47:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:55,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:47:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:55,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:47:55,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:55,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:47:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:55,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:47:55,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:55,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:47:55,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:55,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:47:55,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:55,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:47:55,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:55,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:47:55,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:55,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:47:55,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:55,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 19:47:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:55,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 19:47:55,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:55,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 19:47:55,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:55,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:47:55,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:55,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:47:55,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:55,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:47:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:55,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:47:55,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:55,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:47:55,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:55,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:47:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:55,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:47:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:55,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:47:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:55,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:47:55,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:55,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:47:55,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:55,064 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 45 proven. 51 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2022-01-31 19:47:55,064 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:47:55,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051666243] [2022-01-31 19:47:55,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2051666243] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:47:55,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:47:55,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-01-31 19:47:55,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183424737] [2022-01-31 19:47:55,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:47:55,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-31 19:47:55,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:47:55,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-31 19:47:55,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1620, Unknown=0, NotChecked=0, Total=1722 [2022-01-31 19:47:55,065 INFO L87 Difference]: Start difference. First operand 259 states and 291 transitions. Second operand has 42 states, 41 states have (on average 2.6097560975609757) internal successors, (107), 38 states have internal predecessors, (107), 31 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 31 states have call predecessors, (32), 30 states have call successors, (32) [2022-01-31 19:47:57,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:47:57,871 INFO L93 Difference]: Finished difference Result 271 states and 303 transitions. [2022-01-31 19:47:57,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-31 19:47:57,871 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.6097560975609757) internal successors, (107), 38 states have internal predecessors, (107), 31 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 31 states have call predecessors, (32), 30 states have call successors, (32) Word has length 257 [2022-01-31 19:47:57,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:47:57,872 INFO L225 Difference]: With dead ends: 271 [2022-01-31 19:47:57,872 INFO L226 Difference]: Without dead ends: 269 [2022-01-31 19:47:57,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1159 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=396, Invalid=5924, Unknown=0, NotChecked=0, Total=6320 [2022-01-31 19:47:57,873 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 193 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 5769 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 5983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 5769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-31 19:47:57,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 200 Invalid, 5983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 5769 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-31 19:47:57,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-01-31 19:47:58,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 259. [2022-01-31 19:47:58,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 191 states have (on average 1.0157068062827226) internal successors, (194), 193 states have internal predecessors, (194), 49 states have call successors, (49), 19 states have call predecessors, (49), 18 states have return successors, (48), 46 states have call predecessors, (48), 48 states have call successors, (48) [2022-01-31 19:47:58,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 291 transitions. [2022-01-31 19:47:58,004 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 291 transitions. Word has length 257 [2022-01-31 19:47:58,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:47:58,005 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 291 transitions. [2022-01-31 19:47:58,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.6097560975609757) internal successors, (107), 38 states have internal predecessors, (107), 31 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 31 states have call predecessors, (32), 30 states have call successors, (32) [2022-01-31 19:47:58,005 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 291 transitions. [2022-01-31 19:47:58,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-01-31 19:47:58,006 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:47:58,006 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:47:58,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-01-31 19:47:58,006 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:47:58,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:47:58,006 INFO L85 PathProgramCache]: Analyzing trace with hash 2012321699, now seen corresponding path program 54 times [2022-01-31 19:47:58,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:47:58,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335514069] [2022-01-31 19:47:58,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:47:58,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:47:58,008 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:47:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:58,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:47:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:58,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:47:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:58,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:47:58,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:58,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:47:58,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:58,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:47:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:58,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:47:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:58,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:47:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:58,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:47:58,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:58,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:47:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:58,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:47:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:58,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:47:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:58,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:47:58,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:58,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:47:58,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:58,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:47:58,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:58,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:47:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:58,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:47:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:58,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:47:58,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:58,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:47:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:58,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 19:47:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:58,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 19:47:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:58,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 19:47:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:58,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 19:47:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:58,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:47:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:58,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:47:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:58,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:47:58,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:58,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:47:58,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:58,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:47:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:58,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:47:58,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:58,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:47:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:58,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:47:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:58,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:47:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:58,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:47:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:58,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:47:58,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:58,351 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-01-31 19:47:58,351 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:47:58,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335514069] [2022-01-31 19:47:58,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1335514069] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:47:58,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:47:58,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-31 19:47:58,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554364865] [2022-01-31 19:47:58,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:47:58,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-31 19:47:58,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:47:58,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-31 19:47:58,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2022-01-31 19:47:58,353 INFO L87 Difference]: Start difference. First operand 259 states and 291 transitions. Second operand has 36 states, 36 states have (on average 2.9722222222222223) internal successors, (107), 35 states have internal predecessors, (107), 32 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 31 states have call predecessors, (33), 31 states have call successors, (33) [2022-01-31 19:47:59,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:47:59,085 INFO L93 Difference]: Finished difference Result 289 states and 325 transitions. [2022-01-31 19:47:59,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-31 19:47:59,085 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.9722222222222223) internal successors, (107), 35 states have internal predecessors, (107), 32 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 31 states have call predecessors, (33), 31 states have call successors, (33) Word has length 265 [2022-01-31 19:47:59,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:47:59,086 INFO L225 Difference]: With dead ends: 289 [2022-01-31 19:47:59,086 INFO L226 Difference]: Without dead ends: 213 [2022-01-31 19:47:59,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1188 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1091, Invalid=3601, Unknown=0, NotChecked=0, Total=4692 [2022-01-31 19:47:59,087 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 333 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 377 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 1240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 377 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:47:59,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 87 Invalid, 1240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [377 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:47:59,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-01-31 19:47:59,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 200. [2022-01-31 19:47:59,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 147 states have (on average 1.0136054421768708) internal successors, (149), 148 states have internal predecessors, (149), 35 states have call successors, (35), 18 states have call predecessors, (35), 17 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2022-01-31 19:47:59,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 218 transitions. [2022-01-31 19:47:59,179 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 218 transitions. Word has length 265 [2022-01-31 19:47:59,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:47:59,179 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 218 transitions. [2022-01-31 19:47:59,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.9722222222222223) internal successors, (107), 35 states have internal predecessors, (107), 32 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 31 states have call predecessors, (33), 31 states have call successors, (33) [2022-01-31 19:47:59,179 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 218 transitions. [2022-01-31 19:47:59,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-01-31 19:47:59,180 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:47:59,180 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 16, 16, 15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:47:59,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-01-31 19:47:59,180 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:47:59,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:47:59,181 INFO L85 PathProgramCache]: Analyzing trace with hash 968231460, now seen corresponding path program 55 times [2022-01-31 19:47:59,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:47:59,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114813717] [2022-01-31 19:47:59,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:47:59,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:47:59,182 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:47:59,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:59,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:47:59,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:59,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:47:59,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:59,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:47:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:59,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:47:59,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:59,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:47:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:59,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:47:59,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:59,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:47:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:59,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:47:59,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:59,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:47:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:59,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:47:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:59,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:47:59,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:59,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:47:59,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:59,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:47:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:59,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:47:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:59,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:47:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:59,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:47:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:59,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:47:59,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:59,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:47:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:59,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:47:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:59,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 19:47:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:59,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 19:47:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:59,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 19:47:59,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:59,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:47:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:59,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:47:59,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:59,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:47:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:59,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:47:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:59,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:47:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:59,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:47:59,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:59,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:47:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:59,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:47:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:59,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:47:59,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:59,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:47:59,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:59,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:47:59,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:47:59,942 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 48 proven. 48 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2022-01-31 19:47:59,942 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:47:59,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114813717] [2022-01-31 19:47:59,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1114813717] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:47:59,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:47:59,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-01-31 19:47:59,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712869110] [2022-01-31 19:47:59,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:47:59,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-31 19:47:59,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:47:59,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-31 19:47:59,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1703, Unknown=0, NotChecked=0, Total=1806 [2022-01-31 19:47:59,944 INFO L87 Difference]: Start difference. First operand 200 states and 218 transitions. Second operand has 43 states, 42 states have (on average 2.619047619047619) internal successors, (110), 39 states have internal predecessors, (110), 32 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (33), 32 states have call predecessors, (33), 31 states have call successors, (33) [2022-01-31 19:48:02,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:48:02,659 INFO L93 Difference]: Finished difference Result 287 states and 325 transitions. [2022-01-31 19:48:02,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-31 19:48:02,660 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 2.619047619047619) internal successors, (110), 39 states have internal predecessors, (110), 32 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (33), 32 states have call predecessors, (33), 31 states have call successors, (33) Word has length 265 [2022-01-31 19:48:02,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:48:02,661 INFO L225 Difference]: With dead ends: 287 [2022-01-31 19:48:02,661 INFO L226 Difference]: Without dead ends: 285 [2022-01-31 19:48:02,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1270 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=450, Invalid=6522, Unknown=0, NotChecked=0, Total=6972 [2022-01-31 19:48:02,662 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 327 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 6814 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 7167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 6814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-31 19:48:02,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 208 Invalid, 7167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 6814 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-31 19:48:02,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-01-31 19:48:02,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 267. [2022-01-31 19:48:02,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 197 states have (on average 1.015228426395939) internal successors, (200), 199 states have internal predecessors, (200), 51 states have call successors, (51), 19 states have call predecessors, (51), 18 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2022-01-31 19:48:02,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 301 transitions. [2022-01-31 19:48:02,804 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 301 transitions. Word has length 265 [2022-01-31 19:48:02,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:48:02,804 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 301 transitions. [2022-01-31 19:48:02,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 2.619047619047619) internal successors, (110), 39 states have internal predecessors, (110), 32 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (33), 32 states have call predecessors, (33), 31 states have call successors, (33) [2022-01-31 19:48:02,805 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 301 transitions. [2022-01-31 19:48:02,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-01-31 19:48:02,805 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:48:02,805 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:48:02,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-01-31 19:48:02,806 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:48:02,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:48:02,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1312726542, now seen corresponding path program 56 times [2022-01-31 19:48:02,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:48:02,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1574672509] [2022-01-31 19:48:02,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:48:02,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:48:02,808 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:48:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:03,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:48:03,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:03,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:48:03,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:03,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:48:03,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:03,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:48:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:03,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:48:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:03,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:48:03,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:03,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:48:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:03,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:48:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:03,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:48:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:03,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:48:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:03,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:48:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:03,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:48:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:03,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:48:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:03,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:48:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:03,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:48:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:03,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:48:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:03,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:48:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:03,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:48:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:03,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:48:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:03,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 19:48:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:03,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 19:48:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:03,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 19:48:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:03,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:48:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:03,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:48:03,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:03,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:48:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:03,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:48:03,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:03,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:48:03,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:03,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:48:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:03,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:48:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:03,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:48:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:03,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:48:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:03,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:48:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:03,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:48:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:03,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:48:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:03,633 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 51 proven. 45 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2022-01-31 19:48:03,633 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:48:03,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1574672509] [2022-01-31 19:48:03,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1574672509] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:48:03,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:48:03,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-01-31 19:48:03,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004695353] [2022-01-31 19:48:03,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:48:03,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-31 19:48:03,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:48:03,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-31 19:48:03,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1873, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 19:48:03,635 INFO L87 Difference]: Start difference. First operand 267 states and 301 transitions. Second operand has 45 states, 43 states have (on average 2.627906976744186) internal successors, (113), 41 states have internal predecessors, (113), 33 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (34), 33 states have call predecessors, (34), 32 states have call successors, (34) [2022-01-31 19:48:06,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:48:06,383 INFO L93 Difference]: Finished difference Result 295 states and 333 transitions. [2022-01-31 19:48:06,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-31 19:48:06,383 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 43 states have (on average 2.627906976744186) internal successors, (113), 41 states have internal predecessors, (113), 33 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (34), 33 states have call predecessors, (34), 32 states have call successors, (34) Word has length 273 [2022-01-31 19:48:06,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:48:06,384 INFO L225 Difference]: With dead ends: 295 [2022-01-31 19:48:06,384 INFO L226 Difference]: Without dead ends: 293 [2022-01-31 19:48:06,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1376 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=439, Invalid=7043, Unknown=0, NotChecked=0, Total=7482 [2022-01-31 19:48:06,385 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 339 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 7353 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 7711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 7353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-31 19:48:06,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 190 Invalid, 7711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 7353 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-31 19:48:06,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2022-01-31 19:48:06,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 275. [2022-01-31 19:48:06,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 203 states have (on average 1.0147783251231528) internal successors, (206), 205 states have internal predecessors, (206), 52 states have call successors, (52), 20 states have call predecessors, (52), 19 states have return successors, (51), 49 states have call predecessors, (51), 51 states have call successors, (51) [2022-01-31 19:48:06,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 309 transitions. [2022-01-31 19:48:06,533 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 309 transitions. Word has length 273 [2022-01-31 19:48:06,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:48:06,533 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 309 transitions. [2022-01-31 19:48:06,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 43 states have (on average 2.627906976744186) internal successors, (113), 41 states have internal predecessors, (113), 33 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (34), 33 states have call predecessors, (34), 32 states have call successors, (34) [2022-01-31 19:48:06,533 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 309 transitions. [2022-01-31 19:48:06,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-01-31 19:48:06,534 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:48:06,534 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 17, 17, 17, 17, 17, 15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:48:06,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-01-31 19:48:06,534 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:48:06,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:48:06,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1938150515, now seen corresponding path program 57 times [2022-01-31 19:48:06,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:48:06,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374219533] [2022-01-31 19:48:06,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:48:06,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:48:06,536 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:48:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:07,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:48:07,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:07,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:48:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:07,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:48:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:07,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:48:07,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:07,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:48:07,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:07,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:48:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:07,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:48:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:07,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:48:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:07,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:48:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:07,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:48:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:07,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:48:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:07,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:48:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:07,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:48:07,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:07,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:48:07,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:07,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:48:07,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:07,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:48:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:07,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:48:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:07,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:48:07,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:07,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:48:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:07,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:48:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:07,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 19:48:07,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:07,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 19:48:07,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:07,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:48:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:07,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:48:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:07,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:48:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:07,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:48:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:07,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:48:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:07,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:48:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:07,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:48:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:07,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:48:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:07,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:48:07,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:07,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:48:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:07,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:48:07,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:07,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:48:07,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:07,247 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 48 proven. 54 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2022-01-31 19:48:07,247 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:48:07,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [374219533] [2022-01-31 19:48:07,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [374219533] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:48:07,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:48:07,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-01-31 19:48:07,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023381941] [2022-01-31 19:48:07,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:48:07,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-31 19:48:07,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:48:07,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-31 19:48:07,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1785, Unknown=0, NotChecked=0, Total=1892 [2022-01-31 19:48:07,248 INFO L87 Difference]: Start difference. First operand 275 states and 309 transitions. Second operand has 44 states, 43 states have (on average 2.627906976744186) internal successors, (113), 40 states have internal predecessors, (113), 33 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (34), 33 states have call predecessors, (34), 32 states have call successors, (34) [2022-01-31 19:48:10,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:48:10,113 INFO L93 Difference]: Finished difference Result 287 states and 321 transitions. [2022-01-31 19:48:10,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-31 19:48:10,127 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 2.627906976744186) internal successors, (113), 40 states have internal predecessors, (113), 33 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (34), 33 states have call predecessors, (34), 32 states have call successors, (34) Word has length 273 [2022-01-31 19:48:10,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:48:10,128 INFO L225 Difference]: With dead ends: 287 [2022-01-31 19:48:10,128 INFO L226 Difference]: Without dead ends: 285 [2022-01-31 19:48:10,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1282 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=417, Invalid=6555, Unknown=0, NotChecked=0, Total=6972 [2022-01-31 19:48:10,139 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 187 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 6870 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 7082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 6870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-31 19:48:10,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 246 Invalid, 7082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 6870 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-31 19:48:10,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-01-31 19:48:10,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 275. [2022-01-31 19:48:10,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 203 states have (on average 1.0147783251231528) internal successors, (206), 205 states have internal predecessors, (206), 52 states have call successors, (52), 20 states have call predecessors, (52), 19 states have return successors, (51), 49 states have call predecessors, (51), 51 states have call successors, (51) [2022-01-31 19:48:10,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 309 transitions. [2022-01-31 19:48:10,296 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 309 transitions. Word has length 273 [2022-01-31 19:48:10,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:48:10,296 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 309 transitions. [2022-01-31 19:48:10,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 2.627906976744186) internal successors, (113), 40 states have internal predecessors, (113), 33 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (34), 33 states have call predecessors, (34), 32 states have call successors, (34) [2022-01-31 19:48:10,298 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 309 transitions. [2022-01-31 19:48:10,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-01-31 19:48:10,299 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:48:10,299 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:48:10,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-01-31 19:48:10,299 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:48:10,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:48:10,299 INFO L85 PathProgramCache]: Analyzing trace with hash 2140605376, now seen corresponding path program 58 times [2022-01-31 19:48:10,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:48:10,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813295140] [2022-01-31 19:48:10,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:48:10,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:48:10,305 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:48:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:10,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:48:10,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:10,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:48:10,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:10,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:48:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:10,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:48:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:10,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:48:10,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:10,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:48:10,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:10,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:48:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:10,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:48:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:10,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:48:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:10,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:48:10,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:10,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:48:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:10,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:48:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:10,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:48:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:10,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:48:10,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:10,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:48:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:10,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:48:10,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:10,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:48:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:10,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:48:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:10,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:48:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:10,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 19:48:10,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:10,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 19:48:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:10,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 19:48:10,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:10,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:48:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:10,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:48:10,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:10,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:48:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:10,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:48:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:10,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:48:10,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:10,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:48:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:10,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:48:10,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:10,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:48:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:10,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:48:10,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:10,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:48:10,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:10,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:48:10,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:10,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:48:10,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:10,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:48:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:10,681 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-01-31 19:48:10,681 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:48:10,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813295140] [2022-01-31 19:48:10,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1813295140] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:48:10,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:48:10,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-01-31 19:48:10,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671056497] [2022-01-31 19:48:10,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:48:10,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-31 19:48:10,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:48:10,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-31 19:48:10,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=1059, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 19:48:10,683 INFO L87 Difference]: Start difference. First operand 275 states and 309 transitions. Second operand has 38 states, 38 states have (on average 2.973684210526316) internal successors, (113), 37 states have internal predecessors, (113), 34 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 33 states have call predecessors, (35), 33 states have call successors, (35) [2022-01-31 19:48:11,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:48:11,494 INFO L93 Difference]: Finished difference Result 305 states and 343 transitions. [2022-01-31 19:48:11,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-31 19:48:11,495 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.973684210526316) internal successors, (113), 37 states have internal predecessors, (113), 34 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 33 states have call predecessors, (35), 33 states have call successors, (35) Word has length 281 [2022-01-31 19:48:11,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:48:11,496 INFO L225 Difference]: With dead ends: 305 [2022-01-31 19:48:11,496 INFO L226 Difference]: Without dead ends: 225 [2022-01-31 19:48:11,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1339 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1218, Invalid=4038, Unknown=0, NotChecked=0, Total=5256 [2022-01-31 19:48:11,497 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 339 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:48:11,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 94 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:48:11,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-01-31 19:48:11,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 212. [2022-01-31 19:48:11,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 156 states have (on average 1.0128205128205128) internal successors, (158), 157 states have internal predecessors, (158), 37 states have call successors, (37), 19 states have call predecessors, (37), 18 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2022-01-31 19:48:11,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 231 transitions. [2022-01-31 19:48:11,609 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 231 transitions. Word has length 281 [2022-01-31 19:48:11,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:48:11,609 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 231 transitions. [2022-01-31 19:48:11,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.973684210526316) internal successors, (113), 37 states have internal predecessors, (113), 34 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 33 states have call predecessors, (35), 33 states have call successors, (35) [2022-01-31 19:48:11,610 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 231 transitions. [2022-01-31 19:48:11,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-01-31 19:48:11,610 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:48:11,611 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 17, 17, 17, 17, 17, 16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:48:11,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-01-31 19:48:11,611 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:48:11,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:48:11,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1833266497, now seen corresponding path program 59 times [2022-01-31 19:48:11,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:48:11,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301468010] [2022-01-31 19:48:11,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:48:11,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:48:11,617 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:48:11,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:12,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:48:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:12,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:48:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:12,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:48:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:12,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:48:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:12,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:48:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:12,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:48:12,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:12,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:48:12,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:12,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:48:12,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:12,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:48:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:12,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:48:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:12,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:48:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:12,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:48:12,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:12,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:48:12,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:12,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:48:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:12,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:48:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:12,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:48:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:12,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:48:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:12,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:48:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:12,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:48:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:12,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:48:12,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:12,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 19:48:12,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:12,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 19:48:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:12,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:48:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:12,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:48:12,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:12,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:48:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:12,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:48:12,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:12,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:48:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:12,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:48:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:12,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:48:12,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:12,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:48:12,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:12,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:48:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:12,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:48:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:12,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:48:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:12,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:48:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:12,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:48:12,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:12,207 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 51 proven. 51 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2022-01-31 19:48:12,207 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:48:12,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301468010] [2022-01-31 19:48:12,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [301468010] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:48:12,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:48:12,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-01-31 19:48:12,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38048467] [2022-01-31 19:48:12,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:48:12,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-31 19:48:12,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:48:12,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-31 19:48:12,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1872, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 19:48:12,208 INFO L87 Difference]: Start difference. First operand 212 states and 231 transitions. Second operand has 45 states, 44 states have (on average 2.6363636363636362) internal successors, (116), 41 states have internal predecessors, (116), 34 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (35), 34 states have call predecessors, (35), 33 states have call successors, (35) [2022-01-31 19:48:15,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:48:15,637 INFO L93 Difference]: Finished difference Result 303 states and 343 transitions. [2022-01-31 19:48:15,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-31 19:48:15,638 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 2.6363636363636362) internal successors, (116), 41 states have internal predecessors, (116), 34 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (35), 34 states have call predecessors, (35), 33 states have call successors, (35) Word has length 281 [2022-01-31 19:48:15,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:48:15,639 INFO L225 Difference]: With dead ends: 303 [2022-01-31 19:48:15,639 INFO L226 Difference]: Without dead ends: 301 [2022-01-31 19:48:15,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1398 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=473, Invalid=7183, Unknown=0, NotChecked=0, Total=7656 [2022-01-31 19:48:15,640 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 373 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 7271 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 7669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 7271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:48:15,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 185 Invalid, 7669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 7271 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-31 19:48:15,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-01-31 19:48:15,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 283. [2022-01-31 19:48:15,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 209 states have (on average 1.014354066985646) internal successors, (212), 211 states have internal predecessors, (212), 54 states have call successors, (54), 20 states have call predecessors, (54), 19 states have return successors, (53), 51 states have call predecessors, (53), 53 states have call successors, (53) [2022-01-31 19:48:15,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 319 transitions. [2022-01-31 19:48:15,799 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 319 transitions. Word has length 281 [2022-01-31 19:48:15,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:48:15,799 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 319 transitions. [2022-01-31 19:48:15,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 2.6363636363636362) internal successors, (116), 41 states have internal predecessors, (116), 34 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (35), 34 states have call predecessors, (35), 33 states have call successors, (35) [2022-01-31 19:48:15,799 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 319 transitions. [2022-01-31 19:48:15,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2022-01-31 19:48:15,800 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:48:15,800 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:48:15,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-01-31 19:48:15,800 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:48:15,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:48:15,801 INFO L85 PathProgramCache]: Analyzing trace with hash 687757327, now seen corresponding path program 60 times [2022-01-31 19:48:15,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:48:15,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809382435] [2022-01-31 19:48:15,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:48:15,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:48:15,815 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:48:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:16,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:48:16,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:16,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:48:16,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:16,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:48:16,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:16,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:48:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:16,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:48:16,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:16,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:48:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:16,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:48:16,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:16,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:48:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:16,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:48:16,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:16,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:48:16,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:16,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:48:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:16,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:48:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:16,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:48:16,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:16,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:48:16,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:16,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:48:16,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:16,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:48:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:16,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:48:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:16,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:48:16,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:16,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:48:16,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:16,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:48:16,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:16,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 19:48:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:16,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 19:48:16,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:16,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:48:16,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:16,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:48:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:16,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:48:16,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:16,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:48:16,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:16,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:48:16,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:16,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:48:16,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:16,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:48:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:16,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:48:16,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:16,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:48:16,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:16,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:48:16,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:16,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:48:16,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:16,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:48:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:16,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:48:16,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:16,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:48:16,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:16,635 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 54 proven. 48 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2022-01-31 19:48:16,635 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:48:16,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809382435] [2022-01-31 19:48:16,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1809382435] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:48:16,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:48:16,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-01-31 19:48:16,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74895255] [2022-01-31 19:48:16,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:48:16,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-31 19:48:16,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:48:16,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-31 19:48:16,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1961, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 19:48:16,638 INFO L87 Difference]: Start difference. First operand 283 states and 319 transitions. Second operand has 46 states, 45 states have (on average 2.6444444444444444) internal successors, (119), 42 states have internal predecessors, (119), 35 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (36), 35 states have call predecessors, (36), 34 states have call successors, (36) [2022-01-31 19:48:20,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:48:20,188 INFO L93 Difference]: Finished difference Result 311 states and 351 transitions. [2022-01-31 19:48:20,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-31 19:48:20,188 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.6444444444444444) internal successors, (119), 42 states have internal predecessors, (119), 35 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (36), 35 states have call predecessors, (36), 34 states have call successors, (36) Word has length 289 [2022-01-31 19:48:20,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:48:20,189 INFO L225 Difference]: With dead ends: 311 [2022-01-31 19:48:20,189 INFO L226 Difference]: Without dead ends: 309 [2022-01-31 19:48:20,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1466 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=452, Invalid=7558, Unknown=0, NotChecked=0, Total=8010 [2022-01-31 19:48:20,191 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 304 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 8647 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 8977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 8647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-31 19:48:20,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 247 Invalid, 8977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 8647 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-31 19:48:20,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-01-31 19:48:20,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 291. [2022-01-31 19:48:20,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 215 states have (on average 1.013953488372093) internal successors, (218), 217 states have internal predecessors, (218), 55 states have call successors, (55), 21 states have call predecessors, (55), 20 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2022-01-31 19:48:20,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 327 transitions. [2022-01-31 19:48:20,366 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 327 transitions. Word has length 289 [2022-01-31 19:48:20,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:48:20,366 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 327 transitions. [2022-01-31 19:48:20,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.6444444444444444) internal successors, (119), 42 states have internal predecessors, (119), 35 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (36), 35 states have call predecessors, (36), 34 states have call successors, (36) [2022-01-31 19:48:20,366 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 327 transitions. [2022-01-31 19:48:20,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2022-01-31 19:48:20,367 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:48:20,367 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 18, 18, 18, 18, 18, 16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:48:20,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-01-31 19:48:20,367 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:48:20,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:48:20,367 INFO L85 PathProgramCache]: Analyzing trace with hash 380418448, now seen corresponding path program 61 times [2022-01-31 19:48:20,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:48:20,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306503897] [2022-01-31 19:48:20,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:48:20,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:48:20,369 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:48:20,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:21,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:48:21,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:21,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:48:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:21,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:48:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:21,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:48:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:21,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:48:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:21,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:48:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:21,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:48:21,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:21,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:48:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:21,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:48:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:21,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:48:21,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:21,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:48:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:21,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:48:21,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:21,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:48:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:21,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:48:21,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:21,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:48:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:21,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:48:21,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:21,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:48:21,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:21,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:48:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:21,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:48:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:21,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:48:21,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:21,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:48:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:21,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 19:48:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:21,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:48:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:21,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:48:21,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:21,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:48:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:21,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:48:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:21,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:48:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:21,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:48:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:21,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:48:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:21,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:48:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:21,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:48:21,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:21,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:48:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:21,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:48:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:21,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:48:21,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:21,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:48:21,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:21,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:48:21,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:21,196 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 51 proven. 57 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2022-01-31 19:48:21,196 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:48:21,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306503897] [2022-01-31 19:48:21,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [306503897] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:48:21,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:48:21,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-01-31 19:48:21,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297330094] [2022-01-31 19:48:21,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:48:21,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-31 19:48:21,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:48:21,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-31 19:48:21,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1958, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 19:48:21,197 INFO L87 Difference]: Start difference. First operand 291 states and 327 transitions. Second operand has 46 states, 45 states have (on average 2.6444444444444444) internal successors, (119), 42 states have internal predecessors, (119), 35 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (36), 35 states have call predecessors, (36), 34 states have call successors, (36) [2022-01-31 19:48:24,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:48:24,607 INFO L93 Difference]: Finished difference Result 303 states and 339 transitions. [2022-01-31 19:48:24,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-31 19:48:24,607 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.6444444444444444) internal successors, (119), 42 states have internal predecessors, (119), 35 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (36), 35 states have call predecessors, (36), 34 states have call successors, (36) Word has length 289 [2022-01-31 19:48:24,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:48:24,608 INFO L225 Difference]: With dead ends: 303 [2022-01-31 19:48:24,608 INFO L226 Difference]: Without dead ends: 301 [2022-01-31 19:48:24,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1411 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=438, Invalid=7218, Unknown=0, NotChecked=0, Total=7656 [2022-01-31 19:48:24,609 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 248 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 6842 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 7114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 6842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:48:24,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 201 Invalid, 7114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 6842 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-31 19:48:24,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-01-31 19:48:24,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 291. [2022-01-31 19:48:24,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 215 states have (on average 1.013953488372093) internal successors, (218), 217 states have internal predecessors, (218), 55 states have call successors, (55), 21 states have call predecessors, (55), 20 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2022-01-31 19:48:24,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 327 transitions. [2022-01-31 19:48:24,787 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 327 transitions. Word has length 289 [2022-01-31 19:48:24,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:48:24,787 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 327 transitions. [2022-01-31 19:48:24,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.6444444444444444) internal successors, (119), 42 states have internal predecessors, (119), 35 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (36), 35 states have call predecessors, (36), 34 states have call successors, (36) [2022-01-31 19:48:24,787 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 327 transitions. [2022-01-31 19:48:24,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2022-01-31 19:48:24,788 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:48:24,788 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:48:24,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-01-31 19:48:24,788 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:48:24,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:48:24,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1992387363, now seen corresponding path program 62 times [2022-01-31 19:48:24,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:48:24,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930695294] [2022-01-31 19:48:24,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:48:24,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:48:24,790 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:48:24,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:25,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:48:25,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:25,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:48:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:25,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:48:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:25,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:48:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:25,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:48:25,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:25,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:48:25,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:25,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:48:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:25,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:48:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:25,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:48:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:25,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:48:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:25,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:48:25,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:25,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:48:25,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:25,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:48:25,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:25,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:48:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:25,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:48:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:25,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:48:25,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:25,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:48:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:25,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:48:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:25,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:48:25,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:25,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:48:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:25,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 19:48:25,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:25,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 19:48:25,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:25,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:48:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:25,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:48:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:25,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:48:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:25,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:48:25,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:25,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:48:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:25,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:48:25,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:25,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:48:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:25,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:48:25,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:25,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:48:25,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:25,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:48:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:25,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:48:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:25,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:48:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:25,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:48:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:25,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:48:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:25,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:48:25,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:25,110 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-01-31 19:48:25,111 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:48:25,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930695294] [2022-01-31 19:48:25,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1930695294] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:48:25,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:48:25,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-01-31 19:48:25,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873964565] [2022-01-31 19:48:25,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:48:25,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-31 19:48:25,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:48:25,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-31 19:48:25,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=385, Invalid=1175, Unknown=0, NotChecked=0, Total=1560 [2022-01-31 19:48:25,113 INFO L87 Difference]: Start difference. First operand 291 states and 327 transitions. Second operand has 40 states, 40 states have (on average 2.975) internal successors, (119), 39 states have internal predecessors, (119), 36 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 35 states have call predecessors, (37), 35 states have call successors, (37) [2022-01-31 19:48:26,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:48:26,211 INFO L93 Difference]: Finished difference Result 321 states and 361 transitions. [2022-01-31 19:48:26,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-31 19:48:26,211 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.975) internal successors, (119), 39 states have internal predecessors, (119), 36 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 35 states have call predecessors, (37), 35 states have call successors, (37) Word has length 297 [2022-01-31 19:48:26,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:48:26,212 INFO L225 Difference]: With dead ends: 321 [2022-01-31 19:48:26,212 INFO L226 Difference]: Without dead ends: 237 [2022-01-31 19:48:26,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1499 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1352, Invalid=4500, Unknown=0, NotChecked=0, Total=5852 [2022-01-31 19:48:26,213 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 389 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 1636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 19:48:26,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [393 Valid, 101 Invalid, 1636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 19:48:26,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-01-31 19:48:26,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 224. [2022-01-31 19:48:26,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 165 states have (on average 1.0121212121212122) internal successors, (167), 166 states have internal predecessors, (167), 39 states have call successors, (39), 20 states have call predecessors, (39), 19 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2022-01-31 19:48:26,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 244 transitions. [2022-01-31 19:48:26,314 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 244 transitions. Word has length 297 [2022-01-31 19:48:26,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:48:26,314 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 244 transitions. [2022-01-31 19:48:26,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.975) internal successors, (119), 39 states have internal predecessors, (119), 36 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 35 states have call predecessors, (37), 35 states have call successors, (37) [2022-01-31 19:48:26,314 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 244 transitions. [2022-01-31 19:48:26,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2022-01-31 19:48:26,315 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:48:26,315 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 18, 18, 18, 18, 18, 17, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:48:26,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-01-31 19:48:26,315 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:48:26,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:48:26,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1921522338, now seen corresponding path program 63 times [2022-01-31 19:48:26,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:48:26,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778310511] [2022-01-31 19:48:26,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:48:26,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:48:26,317 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:48:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:27,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:48:27,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:27,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:48:27,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:27,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:48:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:27,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:48:27,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:27,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:48:27,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:27,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:48:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:27,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:48:27,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:27,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:48:27,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:27,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:48:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:27,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:48:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:27,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:48:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:27,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:48:27,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:27,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:48:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:27,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:48:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:27,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:48:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:27,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:48:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:27,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:48:27,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:27,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:48:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:27,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:48:27,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:27,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:48:27,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:27,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:48:27,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:27,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 19:48:27,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:27,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:48:27,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:27,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:48:27,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:27,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:48:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:27,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:48:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:27,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:48:27,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:27,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:48:27,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:27,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:48:27,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:27,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:48:27,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:27,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:48:27,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:27,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:48:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:27,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:48:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:27,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:48:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:27,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:48:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:27,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:48:27,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:27,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:48:27,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:27,171 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 54 proven. 54 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2022-01-31 19:48:27,171 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:48:27,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778310511] [2022-01-31 19:48:27,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [778310511] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:48:27,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:48:27,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2022-01-31 19:48:27,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076997022] [2022-01-31 19:48:27,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:48:27,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-31 19:48:27,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:48:27,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-31 19:48:27,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=2049, Unknown=0, NotChecked=0, Total=2162 [2022-01-31 19:48:27,173 INFO L87 Difference]: Start difference. First operand 224 states and 244 transitions. Second operand has 47 states, 46 states have (on average 2.652173913043478) internal successors, (122), 43 states have internal predecessors, (122), 36 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (37), 36 states have call predecessors, (37), 35 states have call successors, (37) [2022-01-31 19:48:30,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:48:30,161 INFO L93 Difference]: Finished difference Result 319 states and 361 transitions. [2022-01-31 19:48:30,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-31 19:48:30,161 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 2.652173913043478) internal successors, (122), 43 states have internal predecessors, (122), 36 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (37), 36 states have call predecessors, (37), 35 states have call successors, (37) Word has length 297 [2022-01-31 19:48:30,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:48:30,162 INFO L225 Difference]: With dead ends: 319 [2022-01-31 19:48:30,162 INFO L226 Difference]: Without dead ends: 317 [2022-01-31 19:48:30,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1532 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=496, Invalid=7876, Unknown=0, NotChecked=0, Total=8372 [2022-01-31 19:48:30,163 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 390 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 8059 mSolverCounterSat, 422 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 8481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 422 IncrementalHoareTripleChecker+Valid, 8059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-31 19:48:30,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [392 Valid, 192 Invalid, 8481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [422 Valid, 8059 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-31 19:48:30,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-01-31 19:48:30,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 299. [2022-01-31 19:48:30,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 221 states have (on average 1.0135746606334841) internal successors, (224), 223 states have internal predecessors, (224), 57 states have call successors, (57), 21 states have call predecessors, (57), 20 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2022-01-31 19:48:30,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 337 transitions. [2022-01-31 19:48:30,363 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 337 transitions. Word has length 297 [2022-01-31 19:48:30,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:48:30,363 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 337 transitions. [2022-01-31 19:48:30,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 2.652173913043478) internal successors, (122), 43 states have internal predecessors, (122), 36 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (37), 36 states have call predecessors, (37), 35 states have call successors, (37) [2022-01-31 19:48:30,363 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 337 transitions. [2022-01-31 19:48:30,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-01-31 19:48:30,364 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:48:30,364 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:48:30,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-01-31 19:48:30,364 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:48:30,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:48:30,365 INFO L85 PathProgramCache]: Analyzing trace with hash -688299220, now seen corresponding path program 64 times [2022-01-31 19:48:30,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:48:30,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886987229] [2022-01-31 19:48:30,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:48:30,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:48:30,367 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:48:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:31,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:48:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:31,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:48:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:31,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:48:31,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:31,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:48:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:31,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:48:31,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:31,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:48:31,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:31,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:48:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:31,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:48:31,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:31,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:48:31,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:31,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:48:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:31,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:48:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:31,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:48:31,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:31,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:48:31,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:31,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:48:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:31,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:48:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:31,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:48:31,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:31,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:48:31,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:31,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:48:31,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:31,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:48:31,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:31,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:48:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:31,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:48:31,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:31,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 19:48:31,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:31,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:48:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:31,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:48:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:31,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:48:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:31,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:48:31,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:31,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:48:31,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:31,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:48:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:31,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:48:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:31,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:48:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:31,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:48:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:31,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:48:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:31,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:48:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:31,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:48:31,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:31,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:48:31,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:31,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:48:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:31,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:48:31,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:31,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:48:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:31,286 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 57 proven. 51 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2022-01-31 19:48:31,286 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:48:31,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886987229] [2022-01-31 19:48:31,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1886987229] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:48:31,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:48:31,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-01-31 19:48:31,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402252390] [2022-01-31 19:48:31,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:48:31,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-01-31 19:48:31,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:48:31,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-01-31 19:48:31,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=2142, Unknown=0, NotChecked=0, Total=2256 [2022-01-31 19:48:31,288 INFO L87 Difference]: Start difference. First operand 299 states and 337 transitions. Second operand has 48 states, 47 states have (on average 2.6595744680851063) internal successors, (125), 44 states have internal predecessors, (125), 37 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (38), 37 states have call predecessors, (38), 36 states have call successors, (38) [2022-01-31 19:48:34,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:48:34,701 INFO L93 Difference]: Finished difference Result 327 states and 369 transitions. [2022-01-31 19:48:34,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-31 19:48:34,701 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.6595744680851063) internal successors, (125), 44 states have internal predecessors, (125), 37 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (38), 37 states have call predecessors, (38), 36 states have call successors, (38) Word has length 305 [2022-01-31 19:48:34,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:48:34,703 INFO L225 Difference]: With dead ends: 327 [2022-01-31 19:48:34,703 INFO L226 Difference]: Without dead ends: 325 [2022-01-31 19:48:34,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1603 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=473, Invalid=8269, Unknown=0, NotChecked=0, Total=8742 [2022-01-31 19:48:34,705 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 343 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 9205 mSolverCounterSat, 371 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 9576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 371 IncrementalHoareTripleChecker+Valid, 9205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:48:34,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 234 Invalid, 9576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [371 Valid, 9205 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-01-31 19:48:34,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-01-31 19:48:34,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 307. [2022-01-31 19:48:34,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 227 states have (on average 1.013215859030837) internal successors, (230), 229 states have internal predecessors, (230), 58 states have call successors, (58), 22 states have call predecessors, (58), 21 states have return successors, (57), 55 states have call predecessors, (57), 57 states have call successors, (57) [2022-01-31 19:48:34,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 345 transitions. [2022-01-31 19:48:34,908 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 345 transitions. Word has length 305 [2022-01-31 19:48:34,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:48:34,908 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 345 transitions. [2022-01-31 19:48:34,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.6595744680851063) internal successors, (125), 44 states have internal predecessors, (125), 37 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (38), 37 states have call predecessors, (38), 36 states have call successors, (38) [2022-01-31 19:48:34,908 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 345 transitions. [2022-01-31 19:48:34,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-01-31 19:48:34,909 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:48:34,909 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 21, 19, 19, 19, 19, 19, 17, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:48:34,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-01-31 19:48:34,910 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:48:34,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:48:34,910 INFO L85 PathProgramCache]: Analyzing trace with hash -617434195, now seen corresponding path program 65 times [2022-01-31 19:48:34,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:48:34,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160785674] [2022-01-31 19:48:34,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:48:34,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:48:34,912 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:48:34,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:35,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:48:35,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:35,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:48:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:35,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:48:35,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:35,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:48:35,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:35,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:48:35,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:35,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:48:35,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:35,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:48:35,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:35,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:48:35,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:35,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:48:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:35,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:48:35,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:35,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:48:35,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:35,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:48:35,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:35,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:48:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:35,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:48:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:35,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:48:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:35,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:48:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:35,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:48:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:35,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:48:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:35,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:48:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:35,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:48:35,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:35,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:48:35,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:35,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:48:35,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:35,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:48:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:35,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:48:35,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:35,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:48:35,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:35,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:48:35,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:35,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:48:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:35,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:48:35,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:35,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:48:35,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:35,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:48:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:35,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:48:35,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:35,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:48:35,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:35,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:48:35,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:35,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:48:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:35,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:48:35,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:35,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:48:35,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:35,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:48:35,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:35,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:48:35,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:35,830 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 54 proven. 60 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2022-01-31 19:48:35,830 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:48:35,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160785674] [2022-01-31 19:48:35,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1160785674] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:48:35,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:48:35,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-01-31 19:48:35,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081628251] [2022-01-31 19:48:35,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:48:35,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-01-31 19:48:35,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:48:35,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-01-31 19:48:35,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=2139, Unknown=0, NotChecked=0, Total=2256 [2022-01-31 19:48:35,832 INFO L87 Difference]: Start difference. First operand 307 states and 345 transitions. Second operand has 48 states, 47 states have (on average 2.6595744680851063) internal successors, (125), 44 states have internal predecessors, (125), 37 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (38), 37 states have call predecessors, (38), 36 states have call successors, (38) [2022-01-31 19:48:39,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:48:39,087 INFO L93 Difference]: Finished difference Result 319 states and 357 transitions. [2022-01-31 19:48:39,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-31 19:48:39,087 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.6595744680851063) internal successors, (125), 44 states have internal predecessors, (125), 37 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (38), 37 states have call predecessors, (38), 36 states have call successors, (38) Word has length 305 [2022-01-31 19:48:39,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:48:39,088 INFO L225 Difference]: With dead ends: 319 [2022-01-31 19:48:39,088 INFO L226 Difference]: Without dead ends: 317 [2022-01-31 19:48:39,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1546 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=459, Invalid=7913, Unknown=0, NotChecked=0, Total=8372 [2022-01-31 19:48:39,089 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 269 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 7567 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 7860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 7567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:48:39,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 201 Invalid, 7860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 7567 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-31 19:48:39,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-01-31 19:48:39,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 307. [2022-01-31 19:48:39,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 227 states have (on average 1.013215859030837) internal successors, (230), 229 states have internal predecessors, (230), 58 states have call successors, (58), 22 states have call predecessors, (58), 21 states have return successors, (57), 55 states have call predecessors, (57), 57 states have call successors, (57) [2022-01-31 19:48:39,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 345 transitions. [2022-01-31 19:48:39,288 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 345 transitions. Word has length 305 [2022-01-31 19:48:39,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:48:39,288 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 345 transitions. [2022-01-31 19:48:39,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.6595744680851063) internal successors, (125), 44 states have internal predecessors, (125), 37 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (38), 37 states have call predecessors, (38), 36 states have call successors, (38) [2022-01-31 19:48:39,288 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 345 transitions. [2022-01-31 19:48:39,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2022-01-31 19:48:39,289 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:48:39,289 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:48:39,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-01-31 19:48:39,290 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:48:39,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:48:39,290 INFO L85 PathProgramCache]: Analyzing trace with hash -926993670, now seen corresponding path program 66 times [2022-01-31 19:48:39,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:48:39,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641628215] [2022-01-31 19:48:39,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:48:39,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:48:39,292 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:48:39,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:48:39,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:48:39,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:48:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:48:39,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:48:39,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:48:39,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:48:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:48:39,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:48:39,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:48:39,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:48:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:48:39,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:48:39,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:48:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:48:39,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:48:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:48:39,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:48:39,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:48:39,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:48:39,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:48:39,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 19:48:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:48:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:48:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:48:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:48:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:48:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:48:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:48:39,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:48:39,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:48:39,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:48:39,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:48:39,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:48:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:48:39,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:48:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:48:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:48:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:48:39,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:39,806 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-01-31 19:48:39,806 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:48:39,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641628215] [2022-01-31 19:48:39,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1641628215] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:48:39,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:48:39,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-01-31 19:48:39,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14340477] [2022-01-31 19:48:39,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:48:39,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-31 19:48:39,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:48:39,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-31 19:48:39,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=425, Invalid=1297, Unknown=0, NotChecked=0, Total=1722 [2022-01-31 19:48:39,808 INFO L87 Difference]: Start difference. First operand 307 states and 345 transitions. Second operand has 42 states, 42 states have (on average 2.9761904761904763) internal successors, (125), 41 states have internal predecessors, (125), 38 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 37 states have call predecessors, (39), 37 states have call successors, (39) [2022-01-31 19:48:40,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:48:40,887 INFO L93 Difference]: Finished difference Result 337 states and 379 transitions. [2022-01-31 19:48:40,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-31 19:48:40,915 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.9761904761904763) internal successors, (125), 41 states have internal predecessors, (125), 38 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 37 states have call predecessors, (39), 37 states have call successors, (39) Word has length 313 [2022-01-31 19:48:40,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:48:40,916 INFO L225 Difference]: With dead ends: 337 [2022-01-31 19:48:40,916 INFO L226 Difference]: Without dead ends: 249 [2022-01-31 19:48:40,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1668 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1493, Invalid=4987, Unknown=0, NotChecked=0, Total=6480 [2022-01-31 19:48:40,917 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 415 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 1350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 19:48:40,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [419 Valid, 83 Invalid, 1350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 19:48:40,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-01-31 19:48:41,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 236. [2022-01-31 19:48:41,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 174 states have (on average 1.0114942528735633) internal successors, (176), 175 states have internal predecessors, (176), 41 states have call successors, (41), 21 states have call predecessors, (41), 20 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2022-01-31 19:48:41,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 257 transitions. [2022-01-31 19:48:41,040 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 257 transitions. Word has length 313 [2022-01-31 19:48:41,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:48:41,040 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 257 transitions. [2022-01-31 19:48:41,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.9761904761904763) internal successors, (125), 41 states have internal predecessors, (125), 38 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 37 states have call predecessors, (39), 37 states have call successors, (39) [2022-01-31 19:48:41,040 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 257 transitions. [2022-01-31 19:48:41,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2022-01-31 19:48:41,041 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:48:41,041 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 21, 19, 19, 19, 19, 19, 18, 18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:48:41,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-01-31 19:48:41,042 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:48:41,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:48:41,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1658555781, now seen corresponding path program 67 times [2022-01-31 19:48:41,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:48:41,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [971555833] [2022-01-31 19:48:41,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:48:41,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:48:41,044 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:48:41,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:48:41,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:48:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:48:41,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:48:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:48:41,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:48:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:48:41,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:48:41,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:48:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:48:41,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:48:41,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:48:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:48:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:48:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:48:41,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:48:41,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:48:41,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:48:41,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:48:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:48:41,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:48:41,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:48:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:48:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:48:41,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:48:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:48:41,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:48:41,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:48:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:48:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:48:41,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:48:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:48:41,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:48:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:48:41,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:48:41,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:48:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:48:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:48:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:48:41,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:41,946 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 57 proven. 57 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2022-01-31 19:48:41,946 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:48:41,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [971555833] [2022-01-31 19:48:41,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [971555833] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:48:41,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:48:41,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-01-31 19:48:41,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207649219] [2022-01-31 19:48:41,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:48:41,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-31 19:48:41,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:48:41,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-31 19:48:41,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=2234, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 19:48:41,948 INFO L87 Difference]: Start difference. First operand 236 states and 257 transitions. Second operand has 49 states, 48 states have (on average 2.6666666666666665) internal successors, (128), 45 states have internal predecessors, (128), 38 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (39), 38 states have call predecessors, (39), 37 states have call successors, (39) [2022-01-31 19:48:45,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:48:45,850 INFO L93 Difference]: Finished difference Result 335 states and 379 transitions. [2022-01-31 19:48:45,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-31 19:48:45,850 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 2.6666666666666665) internal successors, (128), 45 states have internal predecessors, (128), 38 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (39), 38 states have call predecessors, (39), 37 states have call successors, (39) Word has length 313 [2022-01-31 19:48:45,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:48:45,852 INFO L225 Difference]: With dead ends: 335 [2022-01-31 19:48:45,852 INFO L226 Difference]: Without dead ends: 333 [2022-01-31 19:48:45,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1672 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=519, Invalid=8601, Unknown=0, NotChecked=0, Total=9120 [2022-01-31 19:48:45,852 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 388 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 9370 mSolverCounterSat, 424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 9794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 424 IncrementalHoareTripleChecker+Valid, 9370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-31 19:48:45,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 228 Invalid, 9794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [424 Valid, 9370 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-01-31 19:48:45,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-01-31 19:48:46,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 315. [2022-01-31 19:48:46,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 233 states have (on average 1.0128755364806867) internal successors, (236), 235 states have internal predecessors, (236), 60 states have call successors, (60), 22 states have call predecessors, (60), 21 states have return successors, (59), 57 states have call predecessors, (59), 59 states have call successors, (59) [2022-01-31 19:48:46,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 355 transitions. [2022-01-31 19:48:46,065 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 355 transitions. Word has length 313 [2022-01-31 19:48:46,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:48:46,065 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 355 transitions. [2022-01-31 19:48:46,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 2.6666666666666665) internal successors, (128), 45 states have internal predecessors, (128), 38 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (39), 38 states have call predecessors, (39), 37 states have call successors, (39) [2022-01-31 19:48:46,065 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 355 transitions. [2022-01-31 19:48:46,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2022-01-31 19:48:46,066 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:48:46,066 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 21, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:48:46,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-01-31 19:48:46,066 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:48:46,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:48:46,067 INFO L85 PathProgramCache]: Analyzing trace with hash -141982903, now seen corresponding path program 68 times [2022-01-31 19:48:46,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:48:46,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363719186] [2022-01-31 19:48:46,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:48:46,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:48:46,069 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:48:46,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:46,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:48:46,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:46,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:48:46,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:46,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:48:46,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:46,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:48:46,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:46,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:48:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:46,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:48:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:46,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:48:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:46,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:48:46,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:46,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:48:46,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:46,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:48:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:46,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:48:46,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:46,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:48:46,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:46,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:48:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:46,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:48:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:46,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:48:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:46,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:48:46,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:46,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:48:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:46,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:48:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:46,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:48:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:46,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:48:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:46,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:48:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:46,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:48:46,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:46,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:48:46,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:46,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:48:46,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:47,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:48:47,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:47,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:48:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:47,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:48:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:47,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:48:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:47,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:48:47,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:47,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:48:47,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:47,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:48:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:47,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:48:47,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:47,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:48:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:47,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:48:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:47,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:48:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:47,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:48:47,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:47,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:48:47,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:47,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:48:47,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:47,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:48:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:47,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:48:47,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:47,021 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 60 proven. 54 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2022-01-31 19:48:47,021 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:48:47,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363719186] [2022-01-31 19:48:47,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [363719186] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:48:47,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:48:47,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2022-01-31 19:48:47,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849492191] [2022-01-31 19:48:47,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:48:47,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-31 19:48:47,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:48:47,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-31 19:48:47,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=2331, Unknown=0, NotChecked=0, Total=2450 [2022-01-31 19:48:47,023 INFO L87 Difference]: Start difference. First operand 315 states and 355 transitions. Second operand has 50 states, 49 states have (on average 2.673469387755102) internal successors, (131), 46 states have internal predecessors, (131), 39 states have call successors, (42), 3 states have call predecessors, (42), 2 states have return successors, (40), 39 states have call predecessors, (40), 38 states have call successors, (40) [2022-01-31 19:48:51,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:48:51,964 INFO L93 Difference]: Finished difference Result 343 states and 387 transitions. [2022-01-31 19:48:51,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-31 19:48:51,965 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 2.673469387755102) internal successors, (131), 46 states have internal predecessors, (131), 39 states have call successors, (42), 3 states have call predecessors, (42), 2 states have return successors, (40), 39 states have call predecessors, (40), 38 states have call successors, (40) Word has length 321 [2022-01-31 19:48:51,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:48:51,966 INFO L225 Difference]: With dead ends: 343 [2022-01-31 19:48:51,966 INFO L226 Difference]: Without dead ends: 341 [2022-01-31 19:48:51,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1746 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=494, Invalid=9012, Unknown=0, NotChecked=0, Total=9506 [2022-01-31 19:48:51,967 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 322 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 10572 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 10925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 10572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-01-31 19:48:51,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 286 Invalid, 10925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 10572 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-01-31 19:48:51,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2022-01-31 19:48:52,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 323. [2022-01-31 19:48:52,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 239 states have (on average 1.0125523012552302) internal successors, (242), 241 states have internal predecessors, (242), 61 states have call successors, (61), 23 states have call predecessors, (61), 22 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2022-01-31 19:48:52,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 363 transitions. [2022-01-31 19:48:52,193 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 363 transitions. Word has length 321 [2022-01-31 19:48:52,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:48:52,194 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 363 transitions. [2022-01-31 19:48:52,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 2.673469387755102) internal successors, (131), 46 states have internal predecessors, (131), 39 states have call successors, (42), 3 states have call predecessors, (42), 2 states have return successors, (40), 39 states have call predecessors, (40), 38 states have call successors, (40) [2022-01-31 19:48:52,194 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 363 transitions. [2022-01-31 19:48:52,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2022-01-31 19:48:52,195 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:48:52,195 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 20, 20, 20, 20, 20, 18, 18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:48:52,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-01-31 19:48:52,195 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:48:52,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:48:52,195 INFO L85 PathProgramCache]: Analyzing trace with hash -873545014, now seen corresponding path program 69 times [2022-01-31 19:48:52,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:48:52,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988107199] [2022-01-31 19:48:52,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:48:52,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:48:52,198 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:48:52,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:48:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:48:53,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:48:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:48:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:48:53,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:48:53,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:48:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:48:53,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:48:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:48:53,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:48:53,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:48:53,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:48:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:48:53,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:48:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:48:53,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:48:53,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:48:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:48:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:48:53,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:48:53,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:48:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:48:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:48:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:48:53,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:48:53,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:48:53,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:48:53,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:48:53,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:48:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:48:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:48:53,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:48:53,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:48:53,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:48:53,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:48:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:48:53,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:48:53,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:48:53,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:48:53,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:53,203 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 57 proven. 63 refuted. 0 times theorem prover too weak. 804 trivial. 0 not checked. [2022-01-31 19:48:53,203 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:48:53,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988107199] [2022-01-31 19:48:53,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [988107199] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:48:53,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:48:53,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2022-01-31 19:48:53,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071982936] [2022-01-31 19:48:53,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:48:53,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-31 19:48:53,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:48:53,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-31 19:48:53,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=2328, Unknown=0, NotChecked=0, Total=2450 [2022-01-31 19:48:53,205 INFO L87 Difference]: Start difference. First operand 323 states and 363 transitions. Second operand has 50 states, 49 states have (on average 2.673469387755102) internal successors, (131), 46 states have internal predecessors, (131), 39 states have call successors, (42), 3 states have call predecessors, (42), 2 states have return successors, (40), 39 states have call predecessors, (40), 38 states have call successors, (40) [2022-01-31 19:48:56,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:48:56,885 INFO L93 Difference]: Finished difference Result 335 states and 375 transitions. [2022-01-31 19:48:56,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-31 19:48:56,885 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 2.673469387755102) internal successors, (131), 46 states have internal predecessors, (131), 39 states have call successors, (42), 3 states have call predecessors, (42), 2 states have return successors, (40), 39 states have call predecessors, (40), 38 states have call successors, (40) Word has length 321 [2022-01-31 19:48:56,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:48:56,886 INFO L225 Difference]: With dead ends: 335 [2022-01-31 19:48:56,886 INFO L226 Difference]: Without dead ends: 333 [2022-01-31 19:48:56,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1687 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=480, Invalid=8640, Unknown=0, NotChecked=0, Total=9120 [2022-01-31 19:48:56,887 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 227 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 8874 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 9132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 8874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-31 19:48:56,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 253 Invalid, 9132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 8874 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-31 19:48:56,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-01-31 19:48:57,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 323. [2022-01-31 19:48:57,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 239 states have (on average 1.0125523012552302) internal successors, (242), 241 states have internal predecessors, (242), 61 states have call successors, (61), 23 states have call predecessors, (61), 22 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2022-01-31 19:48:57,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 363 transitions. [2022-01-31 19:48:57,109 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 363 transitions. Word has length 321 [2022-01-31 19:48:57,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:48:57,109 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 363 transitions. [2022-01-31 19:48:57,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 2.673469387755102) internal successors, (131), 46 states have internal predecessors, (131), 39 states have call successors, (42), 3 states have call predecessors, (42), 2 states have return successors, (40), 39 states have call predecessors, (40), 38 states have call successors, (40) [2022-01-31 19:48:57,109 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 363 transitions. [2022-01-31 19:48:57,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-01-31 19:48:57,110 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:48:57,110 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:48:57,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-01-31 19:48:57,111 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:48:57,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:48:57,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1292900841, now seen corresponding path program 70 times [2022-01-31 19:48:57,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:48:57,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1998871993] [2022-01-31 19:48:57,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:48:57,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:48:57,113 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:48:57,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:48:57,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:48:57,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:48:57,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:48:57,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:48:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:48:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:48:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:48:57,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:48:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:48:57,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:48:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:48:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:48:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:48:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:48:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:48:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:48:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:48:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:48:57,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:48:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:48:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:48:57,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:48:57,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:48:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:48:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:48:57,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:48:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:48:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:48:57,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:48:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:48:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:48:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:48:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:48:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:48:57,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:48:57,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:48:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:48:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:48:57,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:48:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:48:57,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:57,465 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-01-31 19:48:57,465 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:48:57,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1998871993] [2022-01-31 19:48:57,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1998871993] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:48:57,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:48:57,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-01-31 19:48:57,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43583437] [2022-01-31 19:48:57,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:48:57,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-31 19:48:57,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:48:57,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-31 19:48:57,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=1425, Unknown=0, NotChecked=0, Total=1892 [2022-01-31 19:48:57,467 INFO L87 Difference]: Start difference. First operand 323 states and 363 transitions. Second operand has 44 states, 44 states have (on average 2.977272727272727) internal successors, (131), 43 states have internal predecessors, (131), 40 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 39 states have call predecessors, (41), 39 states have call successors, (41) [2022-01-31 19:48:58,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:48:58,520 INFO L93 Difference]: Finished difference Result 353 states and 397 transitions. [2022-01-31 19:48:58,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-31 19:48:58,520 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.977272727272727) internal successors, (131), 43 states have internal predecessors, (131), 40 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 39 states have call predecessors, (41), 39 states have call successors, (41) Word has length 329 [2022-01-31 19:48:58,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:48:58,521 INFO L225 Difference]: With dead ends: 353 [2022-01-31 19:48:58,521 INFO L226 Difference]: Without dead ends: 261 [2022-01-31 19:48:58,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1846 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1641, Invalid=5499, Unknown=0, NotChecked=0, Total=7140 [2022-01-31 19:48:58,522 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 421 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 474 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 1498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 474 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 19:48:58,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [425 Valid, 90 Invalid, 1498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [474 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 19:48:58,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-01-31 19:48:58,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 248. [2022-01-31 19:48:58,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 183 states have (on average 1.010928961748634) internal successors, (185), 184 states have internal predecessors, (185), 43 states have call successors, (43), 22 states have call predecessors, (43), 21 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2022-01-31 19:48:58,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 270 transitions. [2022-01-31 19:48:58,657 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 270 transitions. Word has length 329 [2022-01-31 19:48:58,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:48:58,657 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 270 transitions. [2022-01-31 19:48:58,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.977272727272727) internal successors, (131), 43 states have internal predecessors, (131), 40 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 39 states have call predecessors, (41), 39 states have call successors, (41) [2022-01-31 19:48:58,657 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 270 transitions. [2022-01-31 19:48:58,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-01-31 19:48:58,658 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:48:58,658 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 20, 20, 20, 20, 20, 19, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:48:58,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-01-31 19:48:58,658 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:48:58,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:48:58,659 INFO L85 PathProgramCache]: Analyzing trace with hash -534637416, now seen corresponding path program 71 times [2022-01-31 19:48:58,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:48:58,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774794513] [2022-01-31 19:48:58,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:48:58,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:48:58,661 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:48:58,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:48:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:48:59,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:48:59,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:48:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:48:59,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:48:59,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:48:59,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:48:59,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:48:59,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:48:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:48:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:48:59,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:48:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:48:59,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:48:59,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:48:59,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:48:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:48:59,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:48:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:48:59,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:48:59,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:48:59,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:48:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:48:59,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:48:59,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:48:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:48:59,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:48:59,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:48:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:48:59,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:48:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:48:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:48:59,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:48:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:48:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:48:59,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:48:59,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:48:59,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:48:59,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:48:59,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:48:59,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:48:59,384 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 60 proven. 60 refuted. 0 times theorem prover too weak. 804 trivial. 0 not checked. [2022-01-31 19:48:59,384 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:48:59,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774794513] [2022-01-31 19:48:59,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1774794513] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:48:59,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:48:59,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 19:48:59,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903615744] [2022-01-31 19:48:59,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:48:59,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 19:48:59,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:48:59,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 19:48:59,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=2526, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 19:48:59,385 INFO L87 Difference]: Start difference. First operand 248 states and 270 transitions. Second operand has 52 states, 50 states have (on average 2.68) internal successors, (134), 48 states have internal predecessors, (134), 40 states have call successors, (43), 3 states have call predecessors, (43), 2 states have return successors, (41), 40 states have call predecessors, (41), 39 states have call successors, (41) [2022-01-31 19:49:04,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:49:04,231 INFO L93 Difference]: Finished difference Result 351 states and 397 transitions. [2022-01-31 19:49:04,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-31 19:49:04,231 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 50 states have (on average 2.68) internal successors, (134), 48 states have internal predecessors, (134), 40 states have call successors, (43), 3 states have call predecessors, (43), 2 states have return successors, (41), 40 states have call predecessors, (41), 39 states have call successors, (41) Word has length 329 [2022-01-31 19:49:04,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:49:04,232 INFO L225 Difference]: With dead ends: 351 [2022-01-31 19:49:04,233 INFO L226 Difference]: Without dead ends: 349 [2022-01-31 19:49:04,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1866 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=550, Invalid=9550, Unknown=0, NotChecked=0, Total=10100 [2022-01-31 19:49:04,233 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 382 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 10497 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 10915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 10497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:49:04,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 234 Invalid, 10915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 10497 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-01-31 19:49:04,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-01-31 19:49:04,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 331. [2022-01-31 19:49:04,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 245 states have (on average 1.0122448979591836) internal successors, (248), 247 states have internal predecessors, (248), 63 states have call successors, (63), 23 states have call predecessors, (63), 22 states have return successors, (62), 60 states have call predecessors, (62), 62 states have call successors, (62) [2022-01-31 19:49:04,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 373 transitions. [2022-01-31 19:49:04,476 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 373 transitions. Word has length 329 [2022-01-31 19:49:04,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:49:04,477 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 373 transitions. [2022-01-31 19:49:04,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 50 states have (on average 2.68) internal successors, (134), 48 states have internal predecessors, (134), 40 states have call successors, (43), 3 states have call predecessors, (43), 2 states have return successors, (41), 40 states have call predecessors, (41), 39 states have call successors, (41) [2022-01-31 19:49:04,477 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 373 transitions. [2022-01-31 19:49:04,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2022-01-31 19:49:04,478 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:49:04,478 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:49:04,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-01-31 19:49:04,478 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:49:04,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:49:04,478 INFO L85 PathProgramCache]: Analyzing trace with hash 126204006, now seen corresponding path program 72 times [2022-01-31 19:49:04,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:49:04,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1489480712] [2022-01-31 19:49:04,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:49:04,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:49:04,481 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:49:04,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:49:05,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:49:05,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:49:05,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:49:05,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:49:05,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:49:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:49:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:49:05,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:49:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:49:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:49:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:49:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:49:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:49:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:49:05,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:49:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:49:05,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:49:05,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:49:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:49:05,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:49:05,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:49:05,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:49:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:49:05,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:49:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:49:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:49:05,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:49:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:49:05,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:49:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:49:05,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:49:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:49:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:49:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:49:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:49:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:49:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:49:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:49:05,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:49:05,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:49:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:49:05,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:05,485 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 63 proven. 57 refuted. 0 times theorem prover too weak. 804 trivial. 0 not checked. [2022-01-31 19:49:05,486 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:49:05,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1489480712] [2022-01-31 19:49:05,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1489480712] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:49:05,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:49:05,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 19:49:05,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120208607] [2022-01-31 19:49:05,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:49:05,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 19:49:05,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:49:05,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 19:49:05,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=2528, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 19:49:05,487 INFO L87 Difference]: Start difference. First operand 331 states and 373 transitions. Second operand has 52 states, 51 states have (on average 2.6862745098039214) internal successors, (137), 48 states have internal predecessors, (137), 41 states have call successors, (44), 3 states have call predecessors, (44), 2 states have return successors, (42), 41 states have call predecessors, (42), 40 states have call successors, (42) [2022-01-31 19:49:09,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:49:09,534 INFO L93 Difference]: Finished difference Result 359 states and 405 transitions. [2022-01-31 19:49:09,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-31 19:49:09,535 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.6862745098039214) internal successors, (137), 48 states have internal predecessors, (137), 41 states have call successors, (44), 3 states have call predecessors, (44), 2 states have return successors, (42), 41 states have call predecessors, (42), 40 states have call successors, (42) Word has length 337 [2022-01-31 19:49:09,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:49:09,536 INFO L225 Difference]: With dead ends: 359 [2022-01-31 19:49:09,536 INFO L226 Difference]: Without dead ends: 357 [2022-01-31 19:49:09,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1895 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=515, Invalid=9787, Unknown=0, NotChecked=0, Total=10302 [2022-01-31 19:49:09,537 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 352 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 11249 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 11636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 11249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-31 19:49:09,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [354 Valid, 274 Invalid, 11636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 11249 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-01-31 19:49:09,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-01-31 19:49:09,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 339. [2022-01-31 19:49:09,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 251 states have (on average 1.0119521912350598) internal successors, (254), 253 states have internal predecessors, (254), 64 states have call successors, (64), 24 states have call predecessors, (64), 23 states have return successors, (63), 61 states have call predecessors, (63), 63 states have call successors, (63) [2022-01-31 19:49:09,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 381 transitions. [2022-01-31 19:49:09,772 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 381 transitions. Word has length 337 [2022-01-31 19:49:09,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:49:09,773 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 381 transitions. [2022-01-31 19:49:09,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.6862745098039214) internal successors, (137), 48 states have internal predecessors, (137), 41 states have call successors, (44), 3 states have call predecessors, (44), 2 states have return successors, (42), 41 states have call predecessors, (42), 40 states have call successors, (42) [2022-01-31 19:49:09,773 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 381 transitions. [2022-01-31 19:49:09,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2022-01-31 19:49:09,774 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:49:09,774 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 21, 21, 21, 21, 21, 19, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:49:09,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-01-31 19:49:09,774 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:49:09,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:49:09,774 INFO L85 PathProgramCache]: Analyzing trace with hash 884467431, now seen corresponding path program 73 times [2022-01-31 19:49:09,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:49:09,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491243108] [2022-01-31 19:49:09,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:49:09,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:49:09,777 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:49:09,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:49:10,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:49:10,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:49:10,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:49:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:49:10,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:49:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:49:10,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:49:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:49:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:49:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:49:10,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:49:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:49:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:49:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:49:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:49:10,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:49:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:49:10,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:49:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:49:10,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:49:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:49:10,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:49:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:49:10,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:49:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:49:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:49:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:49:10,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:49:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:49:10,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:49:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:49:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:49:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:49:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:49:10,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:49:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:49:10,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:49:10,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:49:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:49:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:49:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:49:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:10,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 60 proven. 66 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-01-31 19:49:10,835 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:49:10,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491243108] [2022-01-31 19:49:10,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1491243108] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:49:10,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:49:10,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-01-31 19:49:10,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591104206] [2022-01-31 19:49:10,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:49:10,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-01-31 19:49:10,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:49:10,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-01-31 19:49:10,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=2626, Unknown=0, NotChecked=0, Total=2756 [2022-01-31 19:49:10,836 INFO L87 Difference]: Start difference. First operand 339 states and 381 transitions. Second operand has 53 states, 51 states have (on average 2.6862745098039214) internal successors, (137), 49 states have internal predecessors, (137), 41 states have call successors, (44), 3 states have call predecessors, (44), 2 states have return successors, (42), 41 states have call predecessors, (42), 40 states have call successors, (42) [2022-01-31 19:49:14,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:49:14,225 INFO L93 Difference]: Finished difference Result 351 states and 393 transitions. [2022-01-31 19:49:14,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-31 19:49:14,225 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 51 states have (on average 2.6862745098039214) internal successors, (137), 49 states have internal predecessors, (137), 41 states have call successors, (44), 3 states have call predecessors, (44), 2 states have return successors, (42), 41 states have call predecessors, (42), 40 states have call successors, (42) Word has length 337 [2022-01-31 19:49:14,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:49:14,227 INFO L225 Difference]: With dead ends: 351 [2022-01-31 19:49:14,227 INFO L226 Difference]: Without dead ends: 349 [2022-01-31 19:49:14,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1883 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=509, Invalid=9591, Unknown=0, NotChecked=0, Total=10100 [2022-01-31 19:49:14,227 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 257 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 9244 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 9531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 9244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:49:14,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 236 Invalid, 9531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 9244 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-31 19:49:14,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-01-31 19:49:14,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 339. [2022-01-31 19:49:14,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 251 states have (on average 1.0119521912350598) internal successors, (254), 253 states have internal predecessors, (254), 64 states have call successors, (64), 24 states have call predecessors, (64), 23 states have return successors, (63), 61 states have call predecessors, (63), 63 states have call successors, (63) [2022-01-31 19:49:14,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 381 transitions. [2022-01-31 19:49:14,462 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 381 transitions. Word has length 337 [2022-01-31 19:49:14,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:49:14,462 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 381 transitions. [2022-01-31 19:49:14,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 51 states have (on average 2.6862745098039214) internal successors, (137), 49 states have internal predecessors, (137), 41 states have call successors, (44), 3 states have call predecessors, (44), 2 states have return successors, (42), 41 states have call predecessors, (42), 40 states have call successors, (42) [2022-01-31 19:49:14,462 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 381 transitions. [2022-01-31 19:49:14,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-01-31 19:49:14,463 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:49:14,463 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:49:14,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-01-31 19:49:14,463 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:49:14,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:49:14,464 INFO L85 PathProgramCache]: Analyzing trace with hash -39342540, now seen corresponding path program 74 times [2022-01-31 19:49:14,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:49:14,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499498294] [2022-01-31 19:49:14,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:49:14,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:49:14,466 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:49:14,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:49:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:49:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:49:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:49:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:49:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:49:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:49:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:49:14,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:49:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:49:14,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:49:14,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:49:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:49:14,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:49:14,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:49:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:49:14,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:49:14,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:49:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:49:14,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:49:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:49:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:49:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:49:14,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:49:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:49:14,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:49:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:49:14,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:49:14,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:49:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:49:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:49:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:49:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:49:14,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:49:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:49:14,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:49:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:49:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:49:14,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:49:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:49:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:49:14,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:49:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:49:14,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:14,912 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-01-31 19:49:14,912 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:49:14,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499498294] [2022-01-31 19:49:14,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1499498294] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:49:14,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:49:14,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-01-31 19:49:14,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723301580] [2022-01-31 19:49:14,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:49:14,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-31 19:49:14,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:49:14,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-31 19:49:14,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=511, Invalid=1559, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 19:49:14,913 INFO L87 Difference]: Start difference. First operand 339 states and 381 transitions. Second operand has 46 states, 46 states have (on average 2.9782608695652173) internal successors, (137), 45 states have internal predecessors, (137), 42 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 41 states have call predecessors, (43), 41 states have call successors, (43) [2022-01-31 19:49:16,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:49:16,288 INFO L93 Difference]: Finished difference Result 369 states and 415 transitions. [2022-01-31 19:49:16,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-31 19:49:16,289 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.9782608695652173) internal successors, (137), 45 states have internal predecessors, (137), 42 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 41 states have call predecessors, (43), 41 states have call successors, (43) Word has length 345 [2022-01-31 19:49:16,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:49:16,290 INFO L225 Difference]: With dead ends: 369 [2022-01-31 19:49:16,290 INFO L226 Difference]: Without dead ends: 273 [2022-01-31 19:49:16,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2033 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1796, Invalid=6036, Unknown=0, NotChecked=0, Total=7832 [2022-01-31 19:49:16,291 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 427 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 478 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 1765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 478 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 19:49:16,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [431 Valid, 107 Invalid, 1765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [478 Valid, 1287 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 19:49:16,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-01-31 19:49:16,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 260. [2022-01-31 19:49:16,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 192 states have (on average 1.0104166666666667) internal successors, (194), 193 states have internal predecessors, (194), 45 states have call successors, (45), 23 states have call predecessors, (45), 22 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2022-01-31 19:49:16,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 283 transitions. [2022-01-31 19:49:16,434 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 283 transitions. Word has length 345 [2022-01-31 19:49:16,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:49:16,434 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 283 transitions. [2022-01-31 19:49:16,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.9782608695652173) internal successors, (137), 45 states have internal predecessors, (137), 42 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 41 states have call predecessors, (43), 41 states have call successors, (43) [2022-01-31 19:49:16,434 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 283 transitions. [2022-01-31 19:49:16,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-01-31 19:49:16,435 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:49:16,435 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 21, 21, 21, 21, 21, 20, 20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:49:16,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-01-31 19:49:16,435 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:49:16,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:49:16,435 INFO L85 PathProgramCache]: Analyzing trace with hash -616051787, now seen corresponding path program 75 times [2022-01-31 19:49:16,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:49:16,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812651506] [2022-01-31 19:49:16,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:49:16,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:49:16,438 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:49:16,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:49:17,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:49:17,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:49:17,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:49:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:49:17,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:49:17,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:49:17,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:49:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:49:17,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:49:17,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:49:17,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:49:17,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:49:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:49:17,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:49:17,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:49:17,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:49:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:49:17,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:49:17,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:49:17,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:49:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:49:17,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:49:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:49:17,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:49:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:49:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:49:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:49:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:49:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:49:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:49:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:49:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:49:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:49:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:49:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:49:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:49:17,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:49:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:49:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:49:17,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:49:17,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:49:17,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:49:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:17,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 63 proven. 63 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-01-31 19:49:17,416 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:49:17,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812651506] [2022-01-31 19:49:17,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1812651506] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:49:17,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:49:17,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-01-31 19:49:17,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695982937] [2022-01-31 19:49:17,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:49:17,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-01-31 19:49:17,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:49:17,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-01-31 19:49:17,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=2731, Unknown=0, NotChecked=0, Total=2862 [2022-01-31 19:49:17,417 INFO L87 Difference]: Start difference. First operand 260 states and 283 transitions. Second operand has 54 states, 52 states have (on average 2.6923076923076925) internal successors, (140), 50 states have internal predecessors, (140), 42 states have call successors, (45), 3 states have call predecessors, (45), 2 states have return successors, (43), 42 states have call predecessors, (43), 41 states have call successors, (43) [2022-01-31 19:49:22,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:49:22,519 INFO L93 Difference]: Finished difference Result 367 states and 415 transitions. [2022-01-31 19:49:22,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-31 19:49:22,520 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 52 states have (on average 2.6923076923076925) internal successors, (140), 50 states have internal predecessors, (140), 42 states have call successors, (45), 3 states have call predecessors, (45), 2 states have return successors, (43), 42 states have call predecessors, (43), 41 states have call successors, (43) Word has length 345 [2022-01-31 19:49:22,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:49:22,521 INFO L225 Difference]: With dead ends: 367 [2022-01-31 19:49:22,521 INFO L226 Difference]: Without dead ends: 365 [2022-01-31 19:49:22,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2020 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=573, Invalid=10347, Unknown=0, NotChecked=0, Total=10920 [2022-01-31 19:49:22,522 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 393 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 11761 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 12197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 11761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-01-31 19:49:22,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 288 Invalid, 12197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 11761 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-01-31 19:49:22,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-01-31 19:49:22,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 347. [2022-01-31 19:49:22,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 257 states have (on average 1.0116731517509727) internal successors, (260), 259 states have internal predecessors, (260), 66 states have call successors, (66), 24 states have call predecessors, (66), 23 states have return successors, (65), 63 states have call predecessors, (65), 65 states have call successors, (65) [2022-01-31 19:49:22,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 391 transitions. [2022-01-31 19:49:22,776 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 391 transitions. Word has length 345 [2022-01-31 19:49:22,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:49:22,776 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 391 transitions. [2022-01-31 19:49:22,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 52 states have (on average 2.6923076923076925) internal successors, (140), 50 states have internal predecessors, (140), 42 states have call successors, (45), 3 states have call predecessors, (45), 2 states have return successors, (43), 42 states have call predecessors, (43), 41 states have call successors, (43) [2022-01-31 19:49:22,776 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 391 transitions. [2022-01-31 19:49:22,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2022-01-31 19:49:22,777 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:49:22,777 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:49:22,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-01-31 19:49:22,777 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:49:22,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:49:22,778 INFO L85 PathProgramCache]: Analyzing trace with hash -993721725, now seen corresponding path program 76 times [2022-01-31 19:49:22,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:49:22,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378845202] [2022-01-31 19:49:22,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:49:22,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:49:22,780 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:49:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:49:23,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:49:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:49:23,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:49:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:49:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:49:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:49:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:49:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:49:23,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:49:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:49:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:49:23,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:49:23,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:49:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:49:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:49:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:49:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:49:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:49:23,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:49:23,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:49:23,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:49:23,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:49:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:49:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:49:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:49:23,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:49:23,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:49:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:49:23,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:49:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:49:23,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:49:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:49:23,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:49:23,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:49:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:49:23,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:49:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:49:23,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:49:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:49:23,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:49:23,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:49:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:49:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:49:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:23,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 66 proven. 60 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-01-31 19:49:23,860 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:49:23,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378845202] [2022-01-31 19:49:23,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1378845202] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:49:23,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:49:23,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-01-31 19:49:23,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695094182] [2022-01-31 19:49:23,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:49:23,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-01-31 19:49:23,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:49:23,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-01-31 19:49:23,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=2733, Unknown=0, NotChecked=0, Total=2862 [2022-01-31 19:49:23,862 INFO L87 Difference]: Start difference. First operand 347 states and 391 transitions. Second operand has 54 states, 53 states have (on average 2.69811320754717) internal successors, (143), 50 states have internal predecessors, (143), 43 states have call successors, (46), 3 states have call predecessors, (46), 2 states have return successors, (44), 43 states have call predecessors, (44), 42 states have call successors, (44) [2022-01-31 19:49:28,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:49:28,458 INFO L93 Difference]: Finished difference Result 375 states and 423 transitions. [2022-01-31 19:49:28,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-31 19:49:28,459 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 2.69811320754717) internal successors, (143), 50 states have internal predecessors, (143), 43 states have call successors, (46), 3 states have call predecessors, (46), 2 states have return successors, (44), 43 states have call predecessors, (44), 42 states have call successors, (44) Word has length 353 [2022-01-31 19:49:28,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:49:28,460 INFO L225 Difference]: With dead ends: 375 [2022-01-31 19:49:28,460 INFO L226 Difference]: Without dead ends: 373 [2022-01-31 19:49:28,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2050 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=536, Invalid=10594, Unknown=0, NotChecked=0, Total=11130 [2022-01-31 19:49:28,461 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 362 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 12242 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 12641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 12242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:49:28,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 291 Invalid, 12641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 12242 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-01-31 19:49:28,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-01-31 19:49:28,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 355. [2022-01-31 19:49:28,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 263 states have (on average 1.0114068441064639) internal successors, (266), 265 states have internal predecessors, (266), 67 states have call successors, (67), 25 states have call predecessors, (67), 24 states have return successors, (66), 64 states have call predecessors, (66), 66 states have call successors, (66) [2022-01-31 19:49:28,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 399 transitions. [2022-01-31 19:49:28,726 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 399 transitions. Word has length 353 [2022-01-31 19:49:28,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:49:28,726 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 399 transitions. [2022-01-31 19:49:28,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 2.69811320754717) internal successors, (143), 50 states have internal predecessors, (143), 43 states have call successors, (46), 3 states have call predecessors, (46), 2 states have return successors, (44), 43 states have call predecessors, (44), 42 states have call successors, (44) [2022-01-31 19:49:28,727 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 399 transitions. [2022-01-31 19:49:28,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2022-01-31 19:49:28,728 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:49:28,728 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 22, 22, 22, 22, 22, 20, 20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:49:28,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-01-31 19:49:28,728 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:49:28,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:49:28,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1570430972, now seen corresponding path program 77 times [2022-01-31 19:49:28,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:49:28,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172727840] [2022-01-31 19:49:28,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:49:28,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:49:28,731 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:49:28,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:49:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:49:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:49:29,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:49:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:49:29,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:49:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:49:29,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:49:29,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:49:29,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:49:29,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:49:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:49:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:49:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:49:29,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:49:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:49:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:49:29,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:49:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:49:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:49:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:49:29,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:49:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:49:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:49:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:49:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:49:29,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:49:29,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:49:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:49:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:49:29,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:49:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:49:29,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:49:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:49:29,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:49:29,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:49:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:49:29,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:49:29,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:49:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:49:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:49:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:49:29,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:49:29,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:49:29,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:29,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 63 proven. 69 refuted. 0 times theorem prover too weak. 972 trivial. 0 not checked. [2022-01-31 19:49:29,657 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:49:29,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172727840] [2022-01-31 19:49:29,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [172727840] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:49:29,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:49:29,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-01-31 19:49:29,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533073457] [2022-01-31 19:49:29,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:49:29,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-01-31 19:49:29,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:49:29,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-01-31 19:49:29,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=2730, Unknown=0, NotChecked=0, Total=2862 [2022-01-31 19:49:29,659 INFO L87 Difference]: Start difference. First operand 355 states and 399 transitions. Second operand has 54 states, 53 states have (on average 2.69811320754717) internal successors, (143), 50 states have internal predecessors, (143), 43 states have call successors, (46), 3 states have call predecessors, (46), 2 states have return successors, (44), 43 states have call predecessors, (44), 42 states have call successors, (44) [2022-01-31 19:49:33,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:49:33,456 INFO L93 Difference]: Finished difference Result 367 states and 411 transitions. [2022-01-31 19:49:33,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-31 19:49:33,457 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 2.69811320754717) internal successors, (143), 50 states have internal predecessors, (143), 43 states have call successors, (46), 3 states have call predecessors, (46), 2 states have return successors, (44), 43 states have call predecessors, (44), 42 states have call successors, (44) Word has length 353 [2022-01-31 19:49:33,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:49:33,458 INFO L225 Difference]: With dead ends: 367 [2022-01-31 19:49:33,458 INFO L226 Difference]: Without dead ends: 365 [2022-01-31 19:49:33,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1987 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=522, Invalid=10190, Unknown=0, NotChecked=0, Total=10712 [2022-01-31 19:49:33,459 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 315 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 9763 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 10110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 9763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-31 19:49:33,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 208 Invalid, 10110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 9763 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-31 19:49:33,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-01-31 19:49:33,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 355. [2022-01-31 19:49:33,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 263 states have (on average 1.0114068441064639) internal successors, (266), 265 states have internal predecessors, (266), 67 states have call successors, (67), 25 states have call predecessors, (67), 24 states have return successors, (66), 64 states have call predecessors, (66), 66 states have call successors, (66) [2022-01-31 19:49:33,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 399 transitions. [2022-01-31 19:49:33,714 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 399 transitions. Word has length 353 [2022-01-31 19:49:33,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:49:33,714 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 399 transitions. [2022-01-31 19:49:33,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 2.69811320754717) internal successors, (143), 50 states have internal predecessors, (143), 43 states have call successors, (46), 3 states have call predecessors, (46), 2 states have return successors, (44), 43 states have call predecessors, (44), 42 states have call successors, (44) [2022-01-31 19:49:33,714 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 399 transitions. [2022-01-31 19:49:33,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2022-01-31 19:49:33,715 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:49:33,716 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:49:33,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-01-31 19:49:33,716 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:49:33,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:49:33,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1614967983, now seen corresponding path program 78 times [2022-01-31 19:49:33,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:49:33,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494539383] [2022-01-31 19:49:33,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:49:33,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:49:33,718 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:49:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:49:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:49:34,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:49:34,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:49:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:49:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:49:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:49:34,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:49:34,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:49:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:49:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:49:34,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:49:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:49:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:49:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:49:34,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:49:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:49:34,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:49:34,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:49:34,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:49:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:49:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:49:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:49:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:49:34,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:49:34,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:49:34,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:49:34,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:49:34,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:49:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:49:34,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:49:34,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:49:34,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:49:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:49:34,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:49:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:49:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:49:34,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:49:34,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:49:34,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:49:34,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:49:34,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:49:34,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:49:34,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:49:34,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:49:34,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:34,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-01-31 19:49:34,212 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:49:34,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494539383] [2022-01-31 19:49:34,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [494539383] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:49:34,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:49:34,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-01-31 19:49:34,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764416873] [2022-01-31 19:49:34,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:49:34,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-01-31 19:49:34,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:49:34,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-01-31 19:49:34,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=557, Invalid=1699, Unknown=0, NotChecked=0, Total=2256 [2022-01-31 19:49:34,213 INFO L87 Difference]: Start difference. First operand 355 states and 399 transitions. Second operand has 48 states, 48 states have (on average 2.9791666666666665) internal successors, (143), 47 states have internal predecessors, (143), 44 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 43 states have call predecessors, (45), 43 states have call successors, (45) [2022-01-31 19:49:35,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:49:35,510 INFO L93 Difference]: Finished difference Result 385 states and 433 transitions. [2022-01-31 19:49:35,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-31 19:49:35,511 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.9791666666666665) internal successors, (143), 47 states have internal predecessors, (143), 44 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 43 states have call predecessors, (45), 43 states have call successors, (45) Word has length 361 [2022-01-31 19:49:35,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:49:35,513 INFO L225 Difference]: With dead ends: 385 [2022-01-31 19:49:35,514 INFO L226 Difference]: Without dead ends: 285 [2022-01-31 19:49:35,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2229 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1958, Invalid=6598, Unknown=0, NotChecked=0, Total=8556 [2022-01-31 19:49:35,515 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 461 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 1712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 514 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 19:49:35,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [465 Valid, 99 Invalid, 1712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [514 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 19:49:35,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-01-31 19:49:35,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 272. [2022-01-31 19:49:35,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 201 states have (on average 1.0099502487562189) internal successors, (203), 202 states have internal predecessors, (203), 47 states have call successors, (47), 24 states have call predecessors, (47), 23 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2022-01-31 19:49:35,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 296 transitions. [2022-01-31 19:49:35,676 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 296 transitions. Word has length 361 [2022-01-31 19:49:35,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:49:35,677 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 296 transitions. [2022-01-31 19:49:35,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.9791666666666665) internal successors, (143), 47 states have internal predecessors, (143), 44 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 43 states have call predecessors, (45), 43 states have call successors, (45) [2022-01-31 19:49:35,677 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 296 transitions. [2022-01-31 19:49:35,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2022-01-31 19:49:35,678 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:49:35,678 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 22, 22, 22, 22, 22, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:49:35,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-01-31 19:49:35,678 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:49:35,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:49:35,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1416402898, now seen corresponding path program 79 times [2022-01-31 19:49:35,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:49:35,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896436504] [2022-01-31 19:49:35,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:49:35,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:49:35,682 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:49:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:49:36,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:49:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:49:36,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:49:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:49:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:49:36,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:49:36,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:49:36,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:49:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:49:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:49:36,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:49:36,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:49:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:49:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:49:36,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:49:36,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:49:36,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:49:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:49:36,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:49:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:49:36,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:49:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:49:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:49:36,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:49:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:49:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:49:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:49:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:49:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:49:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:49:36,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:49:36,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:49:36,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:49:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:49:36,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:49:36,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:49:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:49:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:49:36,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:49:36,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:49:36,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:49:36,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:49:36,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:49:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:49:36,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:36,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 66 proven. 66 refuted. 0 times theorem prover too weak. 972 trivial. 0 not checked. [2022-01-31 19:49:36,820 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:49:36,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896436504] [2022-01-31 19:49:36,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [896436504] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:49:36,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:49:36,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2022-01-31 19:49:36,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479975285] [2022-01-31 19:49:36,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:49:36,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-01-31 19:49:36,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:49:36,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-01-31 19:49:36,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=2944, Unknown=0, NotChecked=0, Total=3080 [2022-01-31 19:49:36,836 INFO L87 Difference]: Start difference. First operand 272 states and 296 transitions. Second operand has 56 states, 54 states have (on average 2.7037037037037037) internal successors, (146), 52 states have internal predecessors, (146), 44 states have call successors, (47), 3 states have call predecessors, (47), 2 states have return successors, (45), 44 states have call predecessors, (45), 43 states have call successors, (45) [2022-01-31 19:49:42,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:49:42,375 INFO L93 Difference]: Finished difference Result 383 states and 433 transitions. [2022-01-31 19:49:42,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-31 19:49:42,376 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 54 states have (on average 2.7037037037037037) internal successors, (146), 52 states have internal predecessors, (146), 44 states have call successors, (47), 3 states have call predecessors, (47), 2 states have return successors, (45), 44 states have call predecessors, (45), 43 states have call successors, (45) Word has length 361 [2022-01-31 19:49:42,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:49:42,377 INFO L225 Difference]: With dead ends: 383 [2022-01-31 19:49:42,377 INFO L226 Difference]: Without dead ends: 381 [2022-01-31 19:49:42,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2180 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=596, Invalid=11176, Unknown=0, NotChecked=0, Total=11772 [2022-01-31 19:49:42,378 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 430 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 12226 mSolverCounterSat, 473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 12699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 473 IncrementalHoareTripleChecker+Valid, 12226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-01-31 19:49:42,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [432 Valid, 233 Invalid, 12699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [473 Valid, 12226 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-01-31 19:49:42,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-01-31 19:49:42,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 363. [2022-01-31 19:49:42,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 269 states have (on average 1.0111524163568772) internal successors, (272), 271 states have internal predecessors, (272), 69 states have call successors, (69), 25 states have call predecessors, (69), 24 states have return successors, (68), 66 states have call predecessors, (68), 68 states have call successors, (68) [2022-01-31 19:49:42,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 409 transitions. [2022-01-31 19:49:42,653 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 409 transitions. Word has length 361 [2022-01-31 19:49:42,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:49:42,653 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 409 transitions. [2022-01-31 19:49:42,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 54 states have (on average 2.7037037037037037) internal successors, (146), 52 states have internal predecessors, (146), 44 states have call successors, (47), 3 states have call predecessors, (47), 2 states have return successors, (45), 44 states have call predecessors, (45), 43 states have call successors, (45) [2022-01-31 19:49:42,653 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 409 transitions. [2022-01-31 19:49:42,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2022-01-31 19:49:42,654 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:49:42,655 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:49:42,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-01-31 19:49:42,655 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:49:42,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:49:42,656 INFO L85 PathProgramCache]: Analyzing trace with hash 773743008, now seen corresponding path program 80 times [2022-01-31 19:49:42,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:49:42,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600017180] [2022-01-31 19:49:42,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:49:42,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:49:42,659 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:49:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:49:43,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:49:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:49:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:49:43,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:49:43,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:49:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:49:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:49:43,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:49:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:49:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:49:43,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:49:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:49:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:49:43,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:49:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:49:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:49:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:49:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:49:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:49:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:49:43,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:49:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:49:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:49:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:49:43,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:49:43,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:49:43,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:49:43,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:49:43,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:49:43,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:49:43,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:49:43,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:49:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:49:43,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:49:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:49:43,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:49:43,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:49:43,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:49:43,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:49:43,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:49:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:49:43,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:49:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:49:43,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:49:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:49:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:43,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 69 proven. 63 refuted. 0 times theorem prover too weak. 972 trivial. 0 not checked. [2022-01-31 19:49:43,754 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:49:43,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600017180] [2022-01-31 19:49:43,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1600017180] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:49:43,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:49:43,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2022-01-31 19:49:43,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661310311] [2022-01-31 19:49:43,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:49:43,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-01-31 19:49:43,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:49:43,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-01-31 19:49:43,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=2946, Unknown=0, NotChecked=0, Total=3080 [2022-01-31 19:49:43,756 INFO L87 Difference]: Start difference. First operand 363 states and 409 transitions. Second operand has 56 states, 55 states have (on average 2.709090909090909) internal successors, (149), 52 states have internal predecessors, (149), 45 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (46), 45 states have call predecessors, (46), 44 states have call successors, (46) [2022-01-31 19:49:50,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:49:50,379 INFO L93 Difference]: Finished difference Result 391 states and 441 transitions. [2022-01-31 19:49:50,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-31 19:49:50,379 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 2.709090909090909) internal successors, (149), 52 states have internal predecessors, (149), 45 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (46), 45 states have call predecessors, (46), 44 states have call successors, (46) Word has length 369 [2022-01-31 19:49:50,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:49:50,382 INFO L225 Difference]: With dead ends: 391 [2022-01-31 19:49:50,382 INFO L226 Difference]: Without dead ends: 389 [2022-01-31 19:49:50,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2211 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=557, Invalid=11433, Unknown=0, NotChecked=0, Total=11990 [2022-01-31 19:49:50,382 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 397 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 13238 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 13671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 13238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-01-31 19:49:50,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 287 Invalid, 13671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 13238 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-01-31 19:49:50,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-01-31 19:49:50,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 371. [2022-01-31 19:49:50,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 275 states have (on average 1.010909090909091) internal successors, (278), 277 states have internal predecessors, (278), 70 states have call successors, (70), 26 states have call predecessors, (70), 25 states have return successors, (69), 67 states have call predecessors, (69), 69 states have call successors, (69) [2022-01-31 19:49:50,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 417 transitions. [2022-01-31 19:49:50,669 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 417 transitions. Word has length 369 [2022-01-31 19:49:50,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:49:50,669 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 417 transitions. [2022-01-31 19:49:50,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 2.709090909090909) internal successors, (149), 52 states have internal predecessors, (149), 45 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (46), 45 states have call predecessors, (46), 44 states have call successors, (46) [2022-01-31 19:49:50,669 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 417 transitions. [2022-01-31 19:49:50,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2022-01-31 19:49:50,671 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:49:50,671 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 25, 23, 23, 23, 23, 23, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:49:50,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-01-31 19:49:50,671 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:49:50,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:49:50,671 INFO L85 PathProgramCache]: Analyzing trace with hash -489853407, now seen corresponding path program 81 times [2022-01-31 19:49:50,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:49:50,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731439089] [2022-01-31 19:49:50,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:49:50,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:49:50,673 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:49:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:49:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:49:51,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:49:51,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:49:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:49:51,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:49:51,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:49:51,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:49:51,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:49:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:49:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:49:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:49:51,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:49:51,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:49:51,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:49:51,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:49:51,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:49:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:49:51,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:49:51,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:49:51,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:49:51,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:49:51,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:49:51,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:49:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:49:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:49:51,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:49:51,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:49:51,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:49:51,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:49:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:49:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:49:51,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:49:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:49:51,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:49:51,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:49:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:49:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:49:51,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:49:51,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:49:51,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:49:51,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:49:51,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:49:51,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:49:51,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:49:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:49:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:51,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 66 proven. 72 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2022-01-31 19:49:51,769 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:49:51,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731439089] [2022-01-31 19:49:51,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [731439089] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:49:51,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:49:51,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2022-01-31 19:49:51,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588709083] [2022-01-31 19:49:51,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:49:51,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-01-31 19:49:51,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:49:51,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-01-31 19:49:51,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=3052, Unknown=0, NotChecked=0, Total=3192 [2022-01-31 19:49:51,771 INFO L87 Difference]: Start difference. First operand 371 states and 417 transitions. Second operand has 57 states, 55 states have (on average 2.709090909090909) internal successors, (149), 53 states have internal predecessors, (149), 45 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (46), 45 states have call predecessors, (46), 44 states have call successors, (46) [2022-01-31 19:49:56,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:49:56,867 INFO L93 Difference]: Finished difference Result 383 states and 429 transitions. [2022-01-31 19:49:56,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-31 19:49:56,867 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 55 states have (on average 2.709090909090909) internal successors, (149), 53 states have internal predecessors, (149), 45 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (46), 45 states have call predecessors, (46), 44 states have call successors, (46) Word has length 369 [2022-01-31 19:49:56,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:49:56,869 INFO L225 Difference]: With dead ends: 383 [2022-01-31 19:49:56,869 INFO L226 Difference]: Without dead ends: 381 [2022-01-31 19:49:56,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2199 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=551, Invalid=11221, Unknown=0, NotChecked=0, Total=11772 [2022-01-31 19:49:56,873 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 317 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 11319 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 11672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 11319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:49:56,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 243 Invalid, 11672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 11319 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-01-31 19:49:56,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-01-31 19:49:57,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 371. [2022-01-31 19:49:57,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 275 states have (on average 1.010909090909091) internal successors, (278), 277 states have internal predecessors, (278), 70 states have call successors, (70), 26 states have call predecessors, (70), 25 states have return successors, (69), 67 states have call predecessors, (69), 69 states have call successors, (69) [2022-01-31 19:49:57,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 417 transitions. [2022-01-31 19:49:57,172 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 417 transitions. Word has length 369 [2022-01-31 19:49:57,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:49:57,173 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 417 transitions. [2022-01-31 19:49:57,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 55 states have (on average 2.709090909090909) internal successors, (149), 53 states have internal predecessors, (149), 45 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (46), 45 states have call predecessors, (46), 44 states have call successors, (46) [2022-01-31 19:49:57,173 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 417 transitions. [2022-01-31 19:49:57,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2022-01-31 19:49:57,175 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:49:57,175 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:49:57,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-01-31 19:49:57,175 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:49:57,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:49:57,175 INFO L85 PathProgramCache]: Analyzing trace with hash -787972754, now seen corresponding path program 82 times [2022-01-31 19:49:57,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:49:57,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247872694] [2022-01-31 19:49:57,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:49:57,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:49:57,178 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:49:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:49:57,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:49:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:49:57,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:49:57,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:49:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:49:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:49:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:49:57,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:49:57,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:49:57,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:49:57,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:49:57,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:49:57,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:49:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:49:57,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:49:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:49:57,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:49:57,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:49:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:49:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:49:57,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:49:57,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:49:57,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:49:57,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:49:57,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:49:57,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:49:57,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:49:57,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:49:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:49:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:49:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:49:57,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:49:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:49:57,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:49:57,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:49:57,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:49:57,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:49:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:49:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:49:57,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:49:57,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:49:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:49:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:49:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:49:57,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:49:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:49:57,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:49:57,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-01-31 19:49:57,799 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:49:57,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247872694] [2022-01-31 19:49:57,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1247872694] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:49:57,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:49:57,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2022-01-31 19:49:57,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357714741] [2022-01-31 19:49:57,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:49:57,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-31 19:49:57,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:49:57,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-31 19:49:57,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=605, Invalid=1845, Unknown=0, NotChecked=0, Total=2450 [2022-01-31 19:49:57,800 INFO L87 Difference]: Start difference. First operand 371 states and 417 transitions. Second operand has 50 states, 50 states have (on average 2.98) internal successors, (149), 49 states have internal predecessors, (149), 46 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 45 states have call predecessors, (47), 45 states have call successors, (47) [2022-01-31 19:49:59,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:49:59,360 INFO L93 Difference]: Finished difference Result 401 states and 451 transitions. [2022-01-31 19:49:59,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-31 19:49:59,360 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.98) internal successors, (149), 49 states have internal predecessors, (149), 46 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 45 states have call predecessors, (47), 45 states have call successors, (47) Word has length 377 [2022-01-31 19:49:59,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:49:59,362 INFO L225 Difference]: With dead ends: 401 [2022-01-31 19:49:59,362 INFO L226 Difference]: Without dead ends: 297 [2022-01-31 19:49:59,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2434 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2127, Invalid=7185, Unknown=0, NotChecked=0, Total=9312 [2022-01-31 19:49:59,363 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 511 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1256 mSolverCounterSat, 571 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 571 IncrementalHoareTripleChecker+Valid, 1256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 19:49:59,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [515 Valid, 101 Invalid, 1827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [571 Valid, 1256 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 19:49:59,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-01-31 19:49:59,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 284. [2022-01-31 19:49:59,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 210 states have (on average 1.0095238095238095) internal successors, (212), 211 states have internal predecessors, (212), 49 states have call successors, (49), 25 states have call predecessors, (49), 24 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2022-01-31 19:49:59,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 309 transitions. [2022-01-31 19:49:59,544 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 309 transitions. Word has length 377 [2022-01-31 19:49:59,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:49:59,544 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 309 transitions. [2022-01-31 19:49:59,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.98) internal successors, (149), 49 states have internal predecessors, (149), 46 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 45 states have call predecessors, (47), 45 states have call successors, (47) [2022-01-31 19:49:59,545 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 309 transitions. [2022-01-31 19:49:59,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2022-01-31 19:49:59,546 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:49:59,546 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 25, 23, 23, 23, 23, 23, 22, 22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:49:59,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-01-31 19:49:59,547 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:49:59,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:49:59,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1382512879, now seen corresponding path program 83 times [2022-01-31 19:49:59,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:49:59,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124008768] [2022-01-31 19:49:59,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:49:59,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:49:59,554 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:49:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:50:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:50:00,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:50:00,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:50:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:50:00,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:50:00,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:50:00,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:50:00,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:50:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:50:00,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:50:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:50:00,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:50:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:50:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:50:00,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:50:00,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:50:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:50:00,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:50:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:50:00,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:50:00,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:50:00,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:50:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:50:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:50:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:50:00,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:50:00,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:50:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:50:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:50:00,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:50:00,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:50:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:50:00,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:50:00,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:50:00,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:50:00,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:50:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:50:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:50:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:50:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:50:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:50:00,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:50:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:50:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:50:00,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:50:00,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:50:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:00,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 69 proven. 69 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2022-01-31 19:50:00,691 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:50:00,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [124008768] [2022-01-31 19:50:00,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [124008768] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:50:00,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:50:00,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-01-31 19:50:00,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560169686] [2022-01-31 19:50:00,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:50:00,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-01-31 19:50:00,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:50:00,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-01-31 19:50:00,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=3165, Unknown=0, NotChecked=0, Total=3306 [2022-01-31 19:50:00,692 INFO L87 Difference]: Start difference. First operand 284 states and 309 transitions. Second operand has 58 states, 56 states have (on average 2.7142857142857144) internal successors, (152), 54 states have internal predecessors, (152), 46 states have call successors, (49), 3 states have call predecessors, (49), 2 states have return successors, (47), 46 states have call predecessors, (47), 45 states have call successors, (47) [2022-01-31 19:50:06,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:50:06,866 INFO L93 Difference]: Finished difference Result 399 states and 451 transitions. [2022-01-31 19:50:06,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-31 19:50:06,866 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 56 states have (on average 2.7142857142857144) internal successors, (152), 54 states have internal predecessors, (152), 46 states have call successors, (49), 3 states have call predecessors, (49), 2 states have return successors, (47), 46 states have call predecessors, (47), 45 states have call successors, (47) Word has length 377 [2022-01-31 19:50:06,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:50:06,868 INFO L225 Difference]: With dead ends: 399 [2022-01-31 19:50:06,868 INFO L226 Difference]: Without dead ends: 397 [2022-01-31 19:50:06,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2346 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=619, Invalid=12037, Unknown=0, NotChecked=0, Total=12656 [2022-01-31 19:50:06,869 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 411 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 13394 mSolverCounterSat, 461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 13855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 461 IncrementalHoareTripleChecker+Valid, 13394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:50:06,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [413 Valid, 281 Invalid, 13855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [461 Valid, 13394 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-01-31 19:50:06,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-01-31 19:50:07,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 379. [2022-01-31 19:50:07,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 281 states have (on average 1.01067615658363) internal successors, (284), 283 states have internal predecessors, (284), 72 states have call successors, (72), 26 states have call predecessors, (72), 25 states have return successors, (71), 69 states have call predecessors, (71), 71 states have call successors, (71) [2022-01-31 19:50:07,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 427 transitions. [2022-01-31 19:50:07,231 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 427 transitions. Word has length 377 [2022-01-31 19:50:07,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:50:07,231 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 427 transitions. [2022-01-31 19:50:07,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 56 states have (on average 2.7142857142857144) internal successors, (152), 54 states have internal predecessors, (152), 46 states have call successors, (49), 3 states have call predecessors, (49), 2 states have return successors, (47), 46 states have call predecessors, (47), 45 states have call successors, (47) [2022-01-31 19:50:07,231 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 427 transitions. [2022-01-31 19:50:07,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2022-01-31 19:50:07,233 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:50:07,233 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 25, 23, 23, 23, 23, 23, 23, 23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:50:07,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-01-31 19:50:07,233 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:50:07,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:50:07,233 INFO L85 PathProgramCache]: Analyzing trace with hash -2090281539, now seen corresponding path program 84 times [2022-01-31 19:50:07,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:50:07,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248162411] [2022-01-31 19:50:07,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:50:07,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:50:07,235 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:50:07,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:50:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:50:08,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:50:08,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:50:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:50:08,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:50:08,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:50:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:50:08,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:50:08,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:50:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:50:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:50:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:50:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:50:08,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:50:08,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:50:08,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:50:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:50:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:50:08,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:50:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:50:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:50:08,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:50:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:50:08,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:50:08,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:50:08,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:50:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:50:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:50:08,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:50:08,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:50:08,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:50:08,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:50:08,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:50:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:50:08,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:50:08,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:50:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:50:08,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:50:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:50:08,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:50:08,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:50:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:50:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:50:08,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:50:08,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:50:08,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:50:08,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:50:08,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:08,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 72 proven. 66 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2022-01-31 19:50:08,505 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:50:08,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248162411] [2022-01-31 19:50:08,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [248162411] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:50:08,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:50:08,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-01-31 19:50:08,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843229741] [2022-01-31 19:50:08,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:50:08,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-01-31 19:50:08,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:50:08,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-01-31 19:50:08,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=3167, Unknown=0, NotChecked=0, Total=3306 [2022-01-31 19:50:08,507 INFO L87 Difference]: Start difference. First operand 379 states and 427 transitions. Second operand has 58 states, 57 states have (on average 2.719298245614035) internal successors, (155), 54 states have internal predecessors, (155), 47 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (48), 47 states have call predecessors, (48), 46 states have call successors, (48) [2022-01-31 19:50:15,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:50:15,784 INFO L93 Difference]: Finished difference Result 407 states and 459 transitions. [2022-01-31 19:50:15,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-31 19:50:15,786 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.719298245614035) internal successors, (155), 54 states have internal predecessors, (155), 47 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (48), 47 states have call predecessors, (48), 46 states have call successors, (48) Word has length 385 [2022-01-31 19:50:15,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:50:15,787 INFO L225 Difference]: With dead ends: 407 [2022-01-31 19:50:15,787 INFO L226 Difference]: Without dead ends: 405 [2022-01-31 19:50:15,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2378 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=578, Invalid=12304, Unknown=0, NotChecked=0, Total=12882 [2022-01-31 19:50:15,788 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 376 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 15063 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 15483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 15063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:50:15,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [378 Valid, 338 Invalid, 15483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 15063 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-01-31 19:50:15,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-01-31 19:50:16,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 387. [2022-01-31 19:50:16,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 287 states have (on average 1.0104529616724738) internal successors, (290), 289 states have internal predecessors, (290), 73 states have call successors, (73), 27 states have call predecessors, (73), 26 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2022-01-31 19:50:16,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 435 transitions. [2022-01-31 19:50:16,125 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 435 transitions. Word has length 385 [2022-01-31 19:50:16,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:50:16,125 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 435 transitions. [2022-01-31 19:50:16,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.719298245614035) internal successors, (155), 54 states have internal predecessors, (155), 47 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (48), 47 states have call predecessors, (48), 46 states have call successors, (48) [2022-01-31 19:50:16,125 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 435 transitions. [2022-01-31 19:50:16,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2022-01-31 19:50:16,127 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:50:16,127 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 26, 24, 24, 24, 24, 24, 22, 22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:50:16,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-01-31 19:50:16,127 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:50:16,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:50:16,127 INFO L85 PathProgramCache]: Analyzing trace with hash 80204094, now seen corresponding path program 85 times [2022-01-31 19:50:16,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:50:16,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511591357] [2022-01-31 19:50:16,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:50:16,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:50:16,130 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:50:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:50:17,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:50:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:50:17,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:50:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:50:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:50:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:50:17,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:50:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:50:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:50:17,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:50:17,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:50:17,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:50:17,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:50:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:50:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:50:17,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:50:17,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:50:17,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:50:17,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:50:17,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:50:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:50:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:50:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:50:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:50:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:50:17,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:50:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:50:17,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:50:17,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:50:17,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:50:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:50:17,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:50:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:50:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:50:17,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:50:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:50:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:50:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:50:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:50:17,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:50:17,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:50:17,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:50:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:50:17,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:50:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:50:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:50:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:50:17,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:17,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 69 proven. 75 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2022-01-31 19:50:17,152 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:50:17,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511591357] [2022-01-31 19:50:17,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1511591357] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:50:17,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:50:17,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2022-01-31 19:50:17,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355661845] [2022-01-31 19:50:17,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:50:17,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-01-31 19:50:17,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:50:17,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-01-31 19:50:17,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=3277, Unknown=0, NotChecked=0, Total=3422 [2022-01-31 19:50:17,154 INFO L87 Difference]: Start difference. First operand 387 states and 435 transitions. Second operand has 59 states, 57 states have (on average 2.719298245614035) internal successors, (155), 55 states have internal predecessors, (155), 47 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (48), 47 states have call predecessors, (48), 46 states have call successors, (48) [2022-01-31 19:50:22,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:50:22,207 INFO L93 Difference]: Finished difference Result 399 states and 447 transitions. [2022-01-31 19:50:22,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-31 19:50:22,208 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 57 states have (on average 2.719298245614035) internal successors, (155), 55 states have internal predecessors, (155), 47 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (48), 47 states have call predecessors, (48), 46 states have call successors, (48) Word has length 385 [2022-01-31 19:50:22,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:50:22,209 INFO L225 Difference]: With dead ends: 399 [2022-01-31 19:50:22,209 INFO L226 Difference]: Without dead ends: 397 [2022-01-31 19:50:22,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2366 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=572, Invalid=12084, Unknown=0, NotChecked=0, Total=12656 [2022-01-31 19:50:22,210 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 268 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 12456 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 12763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 12456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:50:22,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 307 Invalid, 12763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 12456 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-01-31 19:50:22,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-01-31 19:50:22,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 387. [2022-01-31 19:50:22,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 287 states have (on average 1.0104529616724738) internal successors, (290), 289 states have internal predecessors, (290), 73 states have call successors, (73), 27 states have call predecessors, (73), 26 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2022-01-31 19:50:22,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 435 transitions. [2022-01-31 19:50:22,519 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 435 transitions. Word has length 385 [2022-01-31 19:50:22,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:50:22,520 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 435 transitions. [2022-01-31 19:50:22,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 57 states have (on average 2.719298245614035) internal successors, (155), 55 states have internal predecessors, (155), 47 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (48), 47 states have call predecessors, (48), 46 states have call successors, (48) [2022-01-31 19:50:22,520 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 435 transitions. [2022-01-31 19:50:22,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2022-01-31 19:50:22,521 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:50:22,521 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:50:22,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-01-31 19:50:22,522 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:50:22,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:50:22,522 INFO L85 PathProgramCache]: Analyzing trace with hash 174032011, now seen corresponding path program 86 times [2022-01-31 19:50:22,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:50:22,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933706418] [2022-01-31 19:50:22,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:50:22,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:50:22,524 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:50:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:50:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:50:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:50:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:50:23,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:50:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:50:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:50:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:50:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:50:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:50:23,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:50:23,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:50:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:50:23,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:50:23,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:50:23,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:50:23,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:50:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:50:23,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:50:23,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:50:23,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:50:23,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:50:23,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:50:23,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:50:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:50:23,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:50:23,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:50:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:50:23,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:50:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:50:23,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:50:23,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:50:23,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:50:23,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:50:23,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:50:23,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:50:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:50:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:50:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:50:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:50:23,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:50:23,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:50:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:50:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:50:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:50:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:50:23,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:50:23,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:50:23,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:50:23,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:23,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-01-31 19:50:23,252 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:50:23,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933706418] [2022-01-31 19:50:23,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1933706418] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:50:23,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:50:23,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 19:50:23,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356849764] [2022-01-31 19:50:23,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:50:23,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 19:50:23,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:50:23,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 19:50:23,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=655, Invalid=1997, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 19:50:23,253 INFO L87 Difference]: Start difference. First operand 387 states and 435 transitions. Second operand has 52 states, 52 states have (on average 2.980769230769231) internal successors, (155), 51 states have internal predecessors, (155), 48 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2022-01-31 19:50:24,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:50:24,609 INFO L93 Difference]: Finished difference Result 417 states and 469 transitions. [2022-01-31 19:50:24,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-31 19:50:24,610 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.980769230769231) internal successors, (155), 51 states have internal predecessors, (155), 48 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) Word has length 393 [2022-01-31 19:50:24,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:50:24,611 INFO L225 Difference]: With dead ends: 417 [2022-01-31 19:50:24,611 INFO L226 Difference]: Without dead ends: 309 [2022-01-31 19:50:24,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2648 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2303, Invalid=7797, Unknown=0, NotChecked=0, Total=10100 [2022-01-31 19:50:24,612 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 645 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 705 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 1983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 705 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 19:50:24,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [649 Valid, 93 Invalid, 1983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [705 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 19:50:24,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-01-31 19:50:24,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 296. [2022-01-31 19:50:24,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 219 states have (on average 1.0091324200913243) internal successors, (221), 220 states have internal predecessors, (221), 51 states have call successors, (51), 26 states have call predecessors, (51), 25 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2022-01-31 19:50:24,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 322 transitions. [2022-01-31 19:50:24,813 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 322 transitions. Word has length 393 [2022-01-31 19:50:24,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:50:24,813 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 322 transitions. [2022-01-31 19:50:24,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.980769230769231) internal successors, (155), 51 states have internal predecessors, (155), 48 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2022-01-31 19:50:24,813 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 322 transitions. [2022-01-31 19:50:24,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2022-01-31 19:50:24,815 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:50:24,815 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 26, 24, 24, 24, 24, 24, 23, 23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:50:24,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-01-31 19:50:24,815 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:50:24,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:50:24,816 INFO L85 PathProgramCache]: Analyzing trace with hash 487550732, now seen corresponding path program 87 times [2022-01-31 19:50:24,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:50:24,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415804908] [2022-01-31 19:50:24,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:50:24,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:50:24,818 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:50:24,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:50:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:50:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:50:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:50:25,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:50:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:50:25,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:50:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:50:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:50:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:50:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:50:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:50:25,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:50:25,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:50:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:50:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:50:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:50:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:50:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:50:25,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:50:25,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:50:25,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:50:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:50:25,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:50:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:50:25,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:50:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:50:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:50:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:50:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:50:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:50:25,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:50:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:50:25,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:50:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:50:25,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:50:25,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:50:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:50:25,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:50:25,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:50:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:50:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:50:25,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:50:25,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:50:25,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:50:25,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:50:25,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:50:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:50:25,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:50:25,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:25,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 72 proven. 72 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2022-01-31 19:50:25,737 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:50:25,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415804908] [2022-01-31 19:50:25,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [415804908] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:50:25,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:50:25,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2022-01-31 19:50:25,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813590130] [2022-01-31 19:50:25,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:50:25,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-01-31 19:50:25,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:50:25,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-01-31 19:50:25,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=3279, Unknown=0, NotChecked=0, Total=3422 [2022-01-31 19:50:25,739 INFO L87 Difference]: Start difference. First operand 296 states and 322 transitions. Second operand has 59 states, 58 states have (on average 2.7241379310344827) internal successors, (158), 55 states have internal predecessors, (158), 48 states have call successors, (51), 3 states have call predecessors, (51), 2 states have return successors, (49), 48 states have call predecessors, (49), 47 states have call successors, (49) [2022-01-31 19:50:31,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:50:31,486 INFO L93 Difference]: Finished difference Result 415 states and 469 transitions. [2022-01-31 19:50:31,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-31 19:50:31,486 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 2.7241379310344827) internal successors, (158), 55 states have internal predecessors, (158), 48 states have call successors, (51), 3 states have call predecessors, (51), 2 states have return successors, (49), 48 states have call predecessors, (49), 47 states have call successors, (49) Word has length 393 [2022-01-31 19:50:31,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:50:31,487 INFO L225 Difference]: With dead ends: 415 [2022-01-31 19:50:31,487 INFO L226 Difference]: Without dead ends: 413 [2022-01-31 19:50:31,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2462 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=634, Invalid=12706, Unknown=0, NotChecked=0, Total=13340 [2022-01-31 19:50:31,488 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 435 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 14317 mSolverCounterSat, 483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 14800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 483 IncrementalHoareTripleChecker+Valid, 14317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-01-31 19:50:31,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [437 Valid, 278 Invalid, 14800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [483 Valid, 14317 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-01-31 19:50:31,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-01-31 19:50:31,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 395. [2022-01-31 19:50:31,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 293 states have (on average 1.0102389078498293) internal successors, (296), 295 states have internal predecessors, (296), 75 states have call successors, (75), 27 states have call predecessors, (75), 26 states have return successors, (74), 72 states have call predecessors, (74), 74 states have call successors, (74) [2022-01-31 19:50:31,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 445 transitions. [2022-01-31 19:50:31,807 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 445 transitions. Word has length 393 [2022-01-31 19:50:31,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:50:31,807 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 445 transitions. [2022-01-31 19:50:31,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 2.7241379310344827) internal successors, (158), 55 states have internal predecessors, (158), 48 states have call successors, (51), 3 states have call predecessors, (51), 2 states have return successors, (49), 48 states have call predecessors, (49), 47 states have call successors, (49) [2022-01-31 19:50:31,807 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 445 transitions. [2022-01-31 19:50:31,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2022-01-31 19:50:31,809 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:50:31,809 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 26, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:50:31,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-01-31 19:50:31,809 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:50:31,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:50:31,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1165713114, now seen corresponding path program 88 times [2022-01-31 19:50:31,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:50:31,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97520094] [2022-01-31 19:50:31,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:50:31,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:50:31,812 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:50:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:32,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:50:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:32,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:50:32,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:32,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:50:32,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:50:33,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:50:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:50:33,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:50:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:50:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:50:33,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:50:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:50:33,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:50:33,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:50:33,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:50:33,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:50:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:50:33,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:50:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:50:33,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:50:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:50:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:50:33,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:50:33,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:50:33,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:50:33,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:50:33,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:50:33,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:50:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:50:33,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:50:33,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:50:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:50:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:50:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:50:33,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:50:33,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:50:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:50:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:50:33,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:50:33,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:50:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:50:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:50:33,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:50:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:50:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:50:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:50:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:50:33,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:50:33,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:50:33,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:50:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:50:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:33,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 75 proven. 69 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2022-01-31 19:50:33,103 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:50:33,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97520094] [2022-01-31 19:50:33,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [97520094] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:50:33,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:50:33,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2022-01-31 19:50:33,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129056109] [2022-01-31 19:50:33,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:50:33,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-01-31 19:50:33,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:50:33,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-01-31 19:50:33,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=3396, Unknown=0, NotChecked=0, Total=3540 [2022-01-31 19:50:33,104 INFO L87 Difference]: Start difference. First operand 395 states and 445 transitions. Second operand has 60 states, 59 states have (on average 2.7288135593220337) internal successors, (161), 56 states have internal predecessors, (161), 49 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (50), 49 states have call predecessors, (50), 48 states have call successors, (50) [2022-01-31 19:50:39,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:50:39,364 INFO L93 Difference]: Finished difference Result 423 states and 477 transitions. [2022-01-31 19:50:39,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-31 19:50:39,364 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 2.7288135593220337) internal successors, (161), 56 states have internal predecessors, (161), 49 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (50), 49 states have call predecessors, (50), 48 states have call successors, (50) Word has length 401 [2022-01-31 19:50:39,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:50:39,366 INFO L225 Difference]: With dead ends: 423 [2022-01-31 19:50:39,366 INFO L226 Difference]: Without dead ends: 421 [2022-01-31 19:50:39,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2551 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=599, Invalid=13207, Unknown=0, NotChecked=0, Total=13806 [2022-01-31 19:50:39,367 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 483 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 14423 mSolverCounterSat, 526 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 14949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 526 IncrementalHoareTripleChecker+Valid, 14423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:50:39,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [485 Valid, 232 Invalid, 14949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [526 Valid, 14423 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-01-31 19:50:39,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-01-31 19:50:39,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 403. [2022-01-31 19:50:39,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 299 states have (on average 1.0100334448160535) internal successors, (302), 301 states have internal predecessors, (302), 76 states have call successors, (76), 28 states have call predecessors, (76), 27 states have return successors, (75), 73 states have call predecessors, (75), 75 states have call successors, (75) [2022-01-31 19:50:39,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 453 transitions. [2022-01-31 19:50:39,719 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 453 transitions. Word has length 401 [2022-01-31 19:50:39,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:50:39,719 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 453 transitions. [2022-01-31 19:50:39,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 2.7288135593220337) internal successors, (161), 56 states have internal predecessors, (161), 49 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (50), 49 states have call predecessors, (50), 48 states have call successors, (50) [2022-01-31 19:50:39,719 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 453 transitions. [2022-01-31 19:50:39,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2022-01-31 19:50:39,721 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:50:39,721 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 27, 25, 25, 25, 25, 25, 23, 23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:50:39,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-01-31 19:50:39,721 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:50:39,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:50:39,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1479231835, now seen corresponding path program 89 times [2022-01-31 19:50:39,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:50:39,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626510285] [2022-01-31 19:50:39,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:50:39,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:50:39,724 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:50:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:50:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:50:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:50:41,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:50:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:50:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:50:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:50:41,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:50:41,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:50:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:50:41,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:50:41,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:50:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:50:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:50:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:50:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:50:41,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:50:41,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:50:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:50:41,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:50:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:50:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:50:41,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:50:41,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:50:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:50:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:50:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:50:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:50:41,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:50:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:50:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:50:41,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:50:41,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:50:41,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:50:41,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:50:41,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:50:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:50:41,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:50:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:50:41,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:50:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:50:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:50:41,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:50:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:50:41,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:50:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:50:41,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:50:41,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:50:41,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:50:41,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:50:41,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:41,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 72 proven. 78 refuted. 0 times theorem prover too weak. 1254 trivial. 0 not checked. [2022-01-31 19:50:41,140 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:50:41,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626510285] [2022-01-31 19:50:41,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [626510285] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:50:41,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:50:41,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2022-01-31 19:50:41,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181437714] [2022-01-31 19:50:41,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:50:41,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-01-31 19:50:41,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:50:41,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-01-31 19:50:41,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=3510, Unknown=0, NotChecked=0, Total=3660 [2022-01-31 19:50:41,141 INFO L87 Difference]: Start difference. First operand 403 states and 453 transitions. Second operand has 61 states, 59 states have (on average 2.7288135593220337) internal successors, (161), 57 states have internal predecessors, (161), 49 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (50), 49 states have call predecessors, (50), 48 states have call successors, (50) [2022-01-31 19:50:47,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:50:47,029 INFO L93 Difference]: Finished difference Result 415 states and 465 transitions. [2022-01-31 19:50:47,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-31 19:50:47,030 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 59 states have (on average 2.7288135593220337) internal successors, (161), 57 states have internal predecessors, (161), 49 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (50), 49 states have call predecessors, (50), 48 states have call successors, (50) Word has length 401 [2022-01-31 19:50:47,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:50:47,043 INFO L225 Difference]: With dead ends: 415 [2022-01-31 19:50:47,044 INFO L226 Difference]: Without dead ends: 413 [2022-01-31 19:50:47,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2539 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=593, Invalid=12979, Unknown=0, NotChecked=0, Total=13572 [2022-01-31 19:50:47,045 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 329 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 13417 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 13784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 13417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-01-31 19:50:47,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 298 Invalid, 13784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 13417 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-01-31 19:50:47,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-01-31 19:50:47,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 403. [2022-01-31 19:50:47,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 299 states have (on average 1.0100334448160535) internal successors, (302), 301 states have internal predecessors, (302), 76 states have call successors, (76), 28 states have call predecessors, (76), 27 states have return successors, (75), 73 states have call predecessors, (75), 75 states have call successors, (75) [2022-01-31 19:50:47,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 453 transitions. [2022-01-31 19:50:47,378 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 453 transitions. Word has length 401 [2022-01-31 19:50:47,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:50:47,378 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 453 transitions. [2022-01-31 19:50:47,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 59 states have (on average 2.7288135593220337) internal successors, (161), 57 states have internal predecessors, (161), 49 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (50), 49 states have call predecessors, (50), 48 states have call successors, (50) [2022-01-31 19:50:47,378 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 453 transitions. [2022-01-31 19:50:47,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2022-01-31 19:50:47,380 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:50:47,380 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:50:47,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-01-31 19:50:47,380 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:50:47,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:50:47,380 INFO L85 PathProgramCache]: Analyzing trace with hash 93954216, now seen corresponding path program 90 times [2022-01-31 19:50:47,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:50:47,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031333161] [2022-01-31 19:50:47,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:50:47,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:50:47,383 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:50:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:50:48,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:50:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:50:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:50:48,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:50:48,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:50:48,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:50:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:50:48,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:50:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:50:48,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:50:48,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:50:48,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:50:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:50:48,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:50:48,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:50:48,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:50:48,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:50:48,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:50:48,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:50:48,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:50:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:50:48,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:50:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:50:48,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:50:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:50:48,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:50:48,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:50:48,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:50:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:50:48,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:50:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:50:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:50:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:50:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:50:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:50:48,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:50:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:50:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:50:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:50:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:50:48,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:50:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:50:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:50:48,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:50:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:50:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:50:48,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:50:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:50:48,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:50:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:50:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:48,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2022-01-31 19:50:48,207 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:50:48,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031333161] [2022-01-31 19:50:48,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1031333161] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:50:48,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:50:48,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-01-31 19:50:48,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81313755] [2022-01-31 19:50:48,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:50:48,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-01-31 19:50:48,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:50:48,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-01-31 19:50:48,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=707, Invalid=2155, Unknown=0, NotChecked=0, Total=2862 [2022-01-31 19:50:48,209 INFO L87 Difference]: Start difference. First operand 403 states and 453 transitions. Second operand has 54 states, 54 states have (on average 2.9814814814814814) internal successors, (161), 53 states have internal predecessors, (161), 50 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 49 states have call predecessors, (51), 49 states have call successors, (51) [2022-01-31 19:50:49,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:50:49,960 INFO L93 Difference]: Finished difference Result 433 states and 487 transitions. [2022-01-31 19:50:49,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-31 19:50:49,960 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.9814814814814814) internal successors, (161), 53 states have internal predecessors, (161), 50 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 49 states have call predecessors, (51), 49 states have call successors, (51) Word has length 409 [2022-01-31 19:50:49,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:50:49,961 INFO L225 Difference]: With dead ends: 433 [2022-01-31 19:50:49,962 INFO L226 Difference]: Without dead ends: 321 [2022-01-31 19:50:49,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2871 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2486, Invalid=8434, Unknown=0, NotChecked=0, Total=10920 [2022-01-31 19:50:49,963 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 527 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1376 mSolverCounterSat, 597 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 1973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 597 IncrementalHoareTripleChecker+Valid, 1376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 19:50:49,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 100 Invalid, 1973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [597 Valid, 1376 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 19:50:49,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-01-31 19:50:50,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 308. [2022-01-31 19:50:50,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 228 states have (on average 1.0087719298245614) internal successors, (230), 229 states have internal predecessors, (230), 53 states have call successors, (53), 27 states have call predecessors, (53), 26 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-01-31 19:50:50,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 335 transitions. [2022-01-31 19:50:50,170 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 335 transitions. Word has length 409 [2022-01-31 19:50:50,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:50:50,170 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 335 transitions. [2022-01-31 19:50:50,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.9814814814814814) internal successors, (161), 53 states have internal predecessors, (161), 50 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 49 states have call predecessors, (51), 49 states have call successors, (51) [2022-01-31 19:50:50,170 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 335 transitions. [2022-01-31 19:50:50,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2022-01-31 19:50:50,172 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:50:50,172 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 27, 25, 25, 25, 25, 25, 24, 24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:50:50,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-01-31 19:50:50,172 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:50:50,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:50:50,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1027308073, now seen corresponding path program 91 times [2022-01-31 19:50:50,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:50:50,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024284654] [2022-01-31 19:50:50,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:50:50,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:50:50,177 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:50:50,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:50:51,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:50:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:50:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:50:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:50:51,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:50:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:50:51,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:50:51,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:50:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:50:51,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:50:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:50:51,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:50:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:50:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:50:51,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:50:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:50:51,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:50:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:50:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:50:51,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:50:51,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:50:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:50:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:50:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:50:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:50:51,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:50:51,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:50:51,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:50:51,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:50:51,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:50:51,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:50:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:50:51,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:50:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:50:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:50:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:50:51,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:50:51,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:50:51,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:50:51,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:50:51,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:50:51,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:50:51,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:50:51,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:50:51,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:50:51,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:50:51,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:50:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:50:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:50:51,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:50:51,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:50:51,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 75 proven. 75 refuted. 0 times theorem prover too weak. 1254 trivial. 0 not checked. [2022-01-31 19:50:51,573 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:50:51,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024284654] [2022-01-31 19:50:51,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1024284654] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:50:51,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:50:51,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-01-31 19:50:51,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402682255] [2022-01-31 19:50:51,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:50:51,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-01-31 19:50:51,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:50:51,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-01-31 19:50:51,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=3631, Unknown=0, NotChecked=0, Total=3782 [2022-01-31 19:50:51,577 INFO L87 Difference]: Start difference. First operand 308 states and 335 transitions. Second operand has 62 states, 60 states have (on average 2.7333333333333334) internal successors, (164), 58 states have internal predecessors, (164), 50 states have call successors, (53), 3 states have call predecessors, (53), 2 states have return successors, (51), 50 states have call predecessors, (51), 49 states have call successors, (51) [2022-01-31 19:50:58,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:50:58,553 INFO L93 Difference]: Finished difference Result 431 states and 487 transitions. [2022-01-31 19:50:58,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-31 19:50:58,554 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 60 states have (on average 2.7333333333333334) internal successors, (164), 58 states have internal predecessors, (164), 50 states have call successors, (53), 3 states have call predecessors, (53), 2 states have return successors, (51), 50 states have call predecessors, (51), 49 states have call successors, (51) Word has length 409 [2022-01-31 19:50:58,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:50:58,556 INFO L225 Difference]: With dead ends: 431 [2022-01-31 19:50:58,556 INFO L226 Difference]: Without dead ends: 429 [2022-01-31 19:50:58,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2696 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=665, Invalid=13855, Unknown=0, NotChecked=0, Total=14520 [2022-01-31 19:50:58,557 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 505 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 15791 mSolverCounterSat, 556 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 16347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 556 IncrementalHoareTripleChecker+Valid, 15791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-01-31 19:50:58,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [507 Valid, 284 Invalid, 16347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [556 Valid, 15791 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-01-31 19:50:58,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-01-31 19:50:58,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 411. [2022-01-31 19:50:58,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 305 states have (on average 1.0098360655737706) internal successors, (308), 307 states have internal predecessors, (308), 78 states have call successors, (78), 28 states have call predecessors, (78), 27 states have return successors, (77), 75 states have call predecessors, (77), 77 states have call successors, (77) [2022-01-31 19:50:58,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 463 transitions. [2022-01-31 19:50:58,913 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 463 transitions. Word has length 409 [2022-01-31 19:50:58,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:50:58,913 INFO L470 AbstractCegarLoop]: Abstraction has 411 states and 463 transitions. [2022-01-31 19:50:58,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 60 states have (on average 2.7333333333333334) internal successors, (164), 58 states have internal predecessors, (164), 50 states have call successors, (53), 3 states have call predecessors, (53), 2 states have return successors, (51), 50 states have call predecessors, (51), 49 states have call successors, (51) [2022-01-31 19:50:58,913 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 463 transitions. [2022-01-31 19:50:58,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2022-01-31 19:50:58,915 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:50:58,915 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 27, 25, 25, 25, 25, 25, 25, 25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:50:58,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-01-31 19:50:58,915 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:50:58,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:50:58,915 INFO L85 PathProgramCache]: Analyzing trace with hash 908918007, now seen corresponding path program 92 times [2022-01-31 19:50:58,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:50:58,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684324882] [2022-01-31 19:50:58,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:50:58,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:50:58,918 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:50:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:51:00,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:51:00,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:51:00,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:51:00,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:51:00,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:51:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:51:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:51:00,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:51:00,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:51:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:51:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:51:00,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:51:00,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:51:00,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:51:00,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:51:00,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:51:00,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:51:00,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:51:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:51:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:51:00,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:51:00,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:51:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:51:00,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:51:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:51:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:51:00,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:51:00,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:51:00,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:51:00,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:51:00,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:51:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:51:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:51:00,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:51:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:51:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:51:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:51:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:51:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:51:00,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:51:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:51:00,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:51:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:51:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:51:00,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:51:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:51:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:51:00,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:51:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:51:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:51:00,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:51:00,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:00,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 78 proven. 72 refuted. 0 times theorem prover too weak. 1254 trivial. 0 not checked. [2022-01-31 19:51:00,364 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:51:00,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684324882] [2022-01-31 19:51:00,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [684324882] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:51:00,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:51:00,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-01-31 19:51:00,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137694061] [2022-01-31 19:51:00,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:51:00,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-01-31 19:51:00,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:51:00,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-01-31 19:51:00,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=3633, Unknown=0, NotChecked=0, Total=3782 [2022-01-31 19:51:00,365 INFO L87 Difference]: Start difference. First operand 411 states and 463 transitions. Second operand has 62 states, 61 states have (on average 2.737704918032787) internal successors, (167), 58 states have internal predecessors, (167), 51 states have call successors, (54), 3 states have call predecessors, (54), 2 states have return successors, (52), 51 states have call predecessors, (52), 50 states have call successors, (52) [2022-01-31 19:51:07,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:51:07,750 INFO L93 Difference]: Finished difference Result 439 states and 495 transitions. [2022-01-31 19:51:07,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-31 19:51:07,751 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 2.737704918032787) internal successors, (167), 58 states have internal predecessors, (167), 51 states have call successors, (54), 3 states have call predecessors, (54), 2 states have return successors, (52), 51 states have call predecessors, (52), 50 states have call successors, (52) Word has length 417 [2022-01-31 19:51:07,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:51:07,752 INFO L225 Difference]: With dead ends: 439 [2022-01-31 19:51:07,752 INFO L226 Difference]: Without dead ends: 437 [2022-01-31 19:51:07,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2730 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=620, Invalid=14142, Unknown=0, NotChecked=0, Total=14762 [2022-01-31 19:51:07,753 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 491 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 15814 mSolverCounterSat, 536 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 16350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 536 IncrementalHoareTripleChecker+Valid, 15814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:51:07,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [493 Valid, 258 Invalid, 16350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [536 Valid, 15814 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-01-31 19:51:07,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-01-31 19:51:08,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 419. [2022-01-31 19:51:08,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 311 states have (on average 1.0096463022508038) internal successors, (314), 313 states have internal predecessors, (314), 79 states have call successors, (79), 29 states have call predecessors, (79), 28 states have return successors, (78), 76 states have call predecessors, (78), 78 states have call successors, (78) [2022-01-31 19:51:08,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 471 transitions. [2022-01-31 19:51:08,129 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 471 transitions. Word has length 417 [2022-01-31 19:51:08,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:51:08,129 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 471 transitions. [2022-01-31 19:51:08,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 2.737704918032787) internal successors, (167), 58 states have internal predecessors, (167), 51 states have call successors, (54), 3 states have call predecessors, (54), 2 states have return successors, (52), 51 states have call predecessors, (52), 50 states have call successors, (52) [2022-01-31 19:51:08,130 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 471 transitions. [2022-01-31 19:51:08,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2022-01-31 19:51:08,131 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:51:08,131 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 26, 26, 26, 26, 26, 24, 24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:51:08,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-01-31 19:51:08,131 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:51:08,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:51:08,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1842271864, now seen corresponding path program 93 times [2022-01-31 19:51:08,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:51:08,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028390355] [2022-01-31 19:51:08,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:51:08,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:51:08,134 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:51:08,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:51:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:51:09,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:51:09,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:51:09,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:51:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:51:09,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:51:09,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:51:09,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:51:09,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:51:09,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:51:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:51:09,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:51:09,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:51:09,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:51:09,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:51:09,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:51:09,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:51:09,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:51:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:51:09,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:51:09,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:51:09,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:51:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:51:09,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:51:09,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:51:09,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:51:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:51:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:51:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:51:09,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:51:09,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:51:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:51:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:51:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:51:09,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:51:09,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:51:09,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:51:09,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:51:09,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:51:09,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:51:09,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:51:09,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:51:09,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:51:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:51:09,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:51:09,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:51:09,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:51:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:51:09,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:51:09,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:51:09,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:51:09,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:09,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 75 proven. 81 refuted. 0 times theorem prover too weak. 1356 trivial. 0 not checked. [2022-01-31 19:51:09,543 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:51:09,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028390355] [2022-01-31 19:51:09,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2028390355] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:51:09,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:51:09,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-01-31 19:51:09,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220878124] [2022-01-31 19:51:09,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:51:09,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-01-31 19:51:09,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:51:09,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-01-31 19:51:09,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=3630, Unknown=0, NotChecked=0, Total=3782 [2022-01-31 19:51:09,545 INFO L87 Difference]: Start difference. First operand 419 states and 471 transitions. Second operand has 62 states, 61 states have (on average 2.737704918032787) internal successors, (167), 58 states have internal predecessors, (167), 51 states have call successors, (54), 3 states have call predecessors, (54), 2 states have return successors, (52), 51 states have call predecessors, (52), 50 states have call successors, (52) [2022-01-31 19:51:16,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:51:16,927 INFO L93 Difference]: Finished difference Result 431 states and 483 transitions. [2022-01-31 19:51:16,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-31 19:51:16,928 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 2.737704918032787) internal successors, (167), 58 states have internal predecessors, (167), 51 states have call successors, (54), 3 states have call predecessors, (54), 2 states have return successors, (52), 51 states have call predecessors, (52), 50 states have call successors, (52) Word has length 417 [2022-01-31 19:51:16,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:51:16,929 INFO L225 Difference]: With dead ends: 431 [2022-01-31 19:51:16,929 INFO L226 Difference]: Without dead ends: 429 [2022-01-31 19:51:16,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2659 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=606, Invalid=13674, Unknown=0, NotChecked=0, Total=14280 [2022-01-31 19:51:16,930 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 334 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 14476 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 14852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 14476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-01-31 19:51:16,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 327 Invalid, 14852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 14476 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-01-31 19:51:16,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-01-31 19:51:17,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 419. [2022-01-31 19:51:17,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 311 states have (on average 1.0096463022508038) internal successors, (314), 313 states have internal predecessors, (314), 79 states have call successors, (79), 29 states have call predecessors, (79), 28 states have return successors, (78), 76 states have call predecessors, (78), 78 states have call successors, (78) [2022-01-31 19:51:17,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 471 transitions. [2022-01-31 19:51:17,303 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 471 transitions. Word has length 417 [2022-01-31 19:51:17,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:51:17,303 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 471 transitions. [2022-01-31 19:51:17,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 2.737704918032787) internal successors, (167), 58 states have internal predecessors, (167), 51 states have call successors, (54), 3 states have call predecessors, (54), 2 states have return successors, (52), 51 states have call predecessors, (52), 50 states have call successors, (52) [2022-01-31 19:51:17,304 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 471 transitions. [2022-01-31 19:51:17,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2022-01-31 19:51:17,305 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:51:17,305 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:51:17,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-01-31 19:51:17,305 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:51:17,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:51:17,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1114779195, now seen corresponding path program 94 times [2022-01-31 19:51:17,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:51:17,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961070022] [2022-01-31 19:51:17,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:51:17,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:51:17,308 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:51:17,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:51:18,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:51:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:51:18,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:51:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:51:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:51:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:51:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:51:18,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:51:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:51:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:51:18,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:51:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:51:18,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:51:18,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:51:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:51:18,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:51:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:51:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:51:18,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:51:18,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:51:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:51:18,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:51:18,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:51:18,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:51:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:51:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:51:18,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:51:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:51:18,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:51:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:51:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:51:18,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:51:18,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:51:18,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:51:18,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:51:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:51:18,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:51:18,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:51:18,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:51:18,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:51:18,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:51:18,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:51:18,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:51:18,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:51:18,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:51:18,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:51:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:51:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:51:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:51:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:51:18,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:51:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:51:18,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:18,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-01-31 19:51:18,156 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:51:18,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961070022] [2022-01-31 19:51:18,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [961070022] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:51:18,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:51:18,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2022-01-31 19:51:18,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506930928] [2022-01-31 19:51:18,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:51:18,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-01-31 19:51:18,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:51:18,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-01-31 19:51:18,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=761, Invalid=2319, Unknown=0, NotChecked=0, Total=3080 [2022-01-31 19:51:18,158 INFO L87 Difference]: Start difference. First operand 419 states and 471 transitions. Second operand has 56 states, 56 states have (on average 2.982142857142857) internal successors, (167), 55 states have internal predecessors, (167), 52 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 51 states have call predecessors, (53), 51 states have call successors, (53) [2022-01-31 19:51:20,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:51:20,176 INFO L93 Difference]: Finished difference Result 449 states and 505 transitions. [2022-01-31 19:51:20,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-31 19:51:20,176 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.982142857142857) internal successors, (167), 55 states have internal predecessors, (167), 52 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 51 states have call predecessors, (53), 51 states have call successors, (53) Word has length 425 [2022-01-31 19:51:20,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:51:20,178 INFO L225 Difference]: With dead ends: 449 [2022-01-31 19:51:20,178 INFO L226 Difference]: Without dead ends: 333 [2022-01-31 19:51:20,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3103 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2676, Invalid=9096, Unknown=0, NotChecked=0, Total=11772 [2022-01-31 19:51:20,179 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 617 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 683 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 2229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 683 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 19:51:20,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [621 Valid, 107 Invalid, 2229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [683 Valid, 1546 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 19:51:20,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-01-31 19:51:20,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 320. [2022-01-31 19:51:20,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 237 states have (on average 1.0084388185654007) internal successors, (239), 238 states have internal predecessors, (239), 55 states have call successors, (55), 28 states have call predecessors, (55), 27 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2022-01-31 19:51:20,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 348 transitions. [2022-01-31 19:51:20,409 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 348 transitions. Word has length 425 [2022-01-31 19:51:20,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:51:20,409 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 348 transitions. [2022-01-31 19:51:20,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.982142857142857) internal successors, (167), 55 states have internal predecessors, (167), 52 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 51 states have call predecessors, (53), 51 states have call successors, (53) [2022-01-31 19:51:20,409 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 348 transitions. [2022-01-31 19:51:20,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2022-01-31 19:51:20,411 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:51:20,411 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 26, 26, 26, 26, 26, 25, 25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:51:20,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-01-31 19:51:20,411 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:51:20,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:51:20,411 INFO L85 PathProgramCache]: Analyzing trace with hash 2093128262, now seen corresponding path program 95 times [2022-01-31 19:51:20,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:51:20,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607917459] [2022-01-31 19:51:20,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:51:20,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:51:20,414 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:51:20,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:51:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:51:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:51:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:51:21,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:51:21,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:51:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:51:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:51:21,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:51:21,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:51:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:51:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:51:21,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:51:21,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:51:21,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:51:21,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:51:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:51:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:51:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:51:21,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:51:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:51:21,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:51:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:51:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:51:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:51:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:51:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:51:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:51:21,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:51:21,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:51:21,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:51:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:51:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:51:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:51:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:51:21,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:51:21,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:51:21,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:51:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:51:21,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:51:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:51:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:51:21,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:51:21,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:51:21,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:51:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:51:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:51:21,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:51:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:51:21,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:51:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:51:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:51:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:51:21,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:21,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 78 proven. 78 refuted. 0 times theorem prover too weak. 1356 trivial. 0 not checked. [2022-01-31 19:51:21,926 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:51:21,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607917459] [2022-01-31 19:51:21,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1607917459] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:51:21,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:51:21,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2022-01-31 19:51:21,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174305957] [2022-01-31 19:51:21,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:51:21,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-01-31 19:51:21,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:51:21,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-01-31 19:51:21,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=3753, Unknown=0, NotChecked=0, Total=3906 [2022-01-31 19:51:21,928 INFO L87 Difference]: Start difference. First operand 320 states and 348 transitions. Second operand has 63 states, 62 states have (on average 2.7419354838709675) internal successors, (170), 59 states have internal predecessors, (170), 52 states have call successors, (55), 3 states have call predecessors, (55), 2 states have return successors, (53), 52 states have call predecessors, (53), 51 states have call successors, (53) [2022-01-31 19:51:29,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:51:29,525 INFO L93 Difference]: Finished difference Result 447 states and 505 transitions. [2022-01-31 19:51:29,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-31 19:51:29,526 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 2.7419354838709675) internal successors, (170), 59 states have internal predecessors, (170), 52 states have call successors, (55), 3 states have call predecessors, (55), 2 states have return successors, (53), 52 states have call predecessors, (53), 51 states have call successors, (53) Word has length 425 [2022-01-31 19:51:29,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:51:29,527 INFO L225 Difference]: With dead ends: 447 [2022-01-31 19:51:29,527 INFO L226 Difference]: Without dead ends: 445 [2022-01-31 19:51:29,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2820 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=680, Invalid=14572, Unknown=0, NotChecked=0, Total=15252 [2022-01-31 19:51:29,528 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 436 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 17063 mSolverCounterSat, 490 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 17553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 490 IncrementalHoareTripleChecker+Valid, 17063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:51:29,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [438 Valid, 332 Invalid, 17553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [490 Valid, 17063 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-01-31 19:51:29,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2022-01-31 19:51:29,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 427. [2022-01-31 19:51:29,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 317 states have (on average 1.0094637223974763) internal successors, (320), 319 states have internal predecessors, (320), 81 states have call successors, (81), 29 states have call predecessors, (81), 28 states have return successors, (80), 78 states have call predecessors, (80), 80 states have call successors, (80) [2022-01-31 19:51:29,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 481 transitions. [2022-01-31 19:51:29,921 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 481 transitions. Word has length 425 [2022-01-31 19:51:29,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:51:29,922 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 481 transitions. [2022-01-31 19:51:29,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 2.7419354838709675) internal successors, (170), 59 states have internal predecessors, (170), 52 states have call successors, (55), 3 states have call predecessors, (55), 2 states have return successors, (53), 52 states have call predecessors, (53), 51 states have call successors, (53) [2022-01-31 19:51:29,922 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 481 transitions. [2022-01-31 19:51:29,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2022-01-31 19:51:29,923 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:51:29,924 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 26, 26, 26, 26, 26, 26, 26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:51:29,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-01-31 19:51:29,924 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:51:29,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:51:29,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1481945108, now seen corresponding path program 96 times [2022-01-31 19:51:29,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:51:29,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889999781] [2022-01-31 19:51:29,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:51:29,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:51:29,927 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:51:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:51:31,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:51:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:51:31,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:51:31,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:51:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:51:31,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:51:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:51:31,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:51:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:51:31,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:51:31,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:51:31,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:51:31,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:51:31,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:51:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:51:31,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:51:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:51:31,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:51:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:51:31,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:51:31,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:51:31,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:51:31,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:51:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:51:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:51:31,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:51:31,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:51:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:51:31,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:51:31,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:51:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:51:31,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:51:31,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:51:31,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:51:31,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:51:31,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:51:31,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:51:31,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:51:31,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:51:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:51:31,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:51:31,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:51:31,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:51:31,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:51:31,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:51:31,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:51:31,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:51:31,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:51:31,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:51:31,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:51:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:51:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:51:31,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:51:31,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:31,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 81 proven. 75 refuted. 0 times theorem prover too weak. 1356 trivial. 0 not checked. [2022-01-31 19:51:31,350 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:51:31,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889999781] [2022-01-31 19:51:31,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [889999781] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:51:31,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:51:31,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2022-01-31 19:51:31,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23005910] [2022-01-31 19:51:31,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:51:31,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-31 19:51:31,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:51:31,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-31 19:51:31,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=3878, Unknown=0, NotChecked=0, Total=4032 [2022-01-31 19:51:31,352 INFO L87 Difference]: Start difference. First operand 427 states and 481 transitions. Second operand has 64 states, 63 states have (on average 2.746031746031746) internal successors, (173), 60 states have internal predecessors, (173), 53 states have call successors, (56), 3 states have call predecessors, (56), 2 states have return successors, (54), 53 states have call predecessors, (54), 52 states have call successors, (54) [2022-01-31 19:51:37,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:51:37,644 INFO L93 Difference]: Finished difference Result 455 states and 513 transitions. [2022-01-31 19:51:37,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-31 19:51:37,644 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 2.746031746031746) internal successors, (173), 60 states have internal predecessors, (173), 53 states have call successors, (56), 3 states have call predecessors, (56), 2 states have return successors, (54), 53 states have call predecessors, (54), 52 states have call successors, (54) Word has length 433 [2022-01-31 19:51:37,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:51:37,646 INFO L225 Difference]: With dead ends: 455 [2022-01-31 19:51:37,646 INFO L226 Difference]: Without dead ends: 453 [2022-01-31 19:51:37,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2915 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=641, Invalid=15109, Unknown=0, NotChecked=0, Total=15750 [2022-01-31 19:51:37,647 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 525 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 16680 mSolverCounterSat, 573 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 17253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 573 IncrementalHoareTripleChecker+Valid, 16680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:51:37,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [527 Valid, 245 Invalid, 17253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [573 Valid, 16680 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-01-31 19:51:37,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-01-31 19:51:38,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 435. [2022-01-31 19:51:38,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 323 states have (on average 1.0092879256965945) internal successors, (326), 325 states have internal predecessors, (326), 82 states have call successors, (82), 30 states have call predecessors, (82), 29 states have return successors, (81), 79 states have call predecessors, (81), 81 states have call successors, (81) [2022-01-31 19:51:38,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 489 transitions. [2022-01-31 19:51:38,037 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 489 transitions. Word has length 433 [2022-01-31 19:51:38,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:51:38,049 INFO L470 AbstractCegarLoop]: Abstraction has 435 states and 489 transitions. [2022-01-31 19:51:38,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 2.746031746031746) internal successors, (173), 60 states have internal predecessors, (173), 53 states have call successors, (56), 3 states have call predecessors, (56), 2 states have return successors, (54), 53 states have call predecessors, (54), 52 states have call successors, (54) [2022-01-31 19:51:38,049 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 489 transitions. [2022-01-31 19:51:38,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2022-01-31 19:51:38,051 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:51:38,051 INFO L514 BasicCegarLoop]: trace histogram [29, 29, 29, 27, 27, 27, 27, 27, 25, 25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:51:38,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-01-31 19:51:38,051 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:51:38,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:51:38,051 INFO L85 PathProgramCache]: Analyzing trace with hash 394885269, now seen corresponding path program 97 times [2022-01-31 19:51:38,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:51:38,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319428414] [2022-01-31 19:51:38,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:51:38,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:51:38,054 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:51:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:51:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:51:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:51:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:51:39,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:51:39,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:51:39,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:51:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:51:39,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:51:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:51:39,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:51:39,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:51:39,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:51:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:51:39,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:51:39,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:51:39,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:51:39,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:51:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:51:39,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:51:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:51:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:51:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:51:39,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:51:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:51:39,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:51:39,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:51:39,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:51:39,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:51:39,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:51:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:51:39,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:51:39,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:51:39,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:51:39,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:51:39,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:51:39,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:51:39,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:51:39,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:51:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:51:39,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:51:39,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:51:39,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:51:39,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:51:39,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:51:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:51:39,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:51:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:51:39,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:51:39,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:51:39,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:51:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:51:39,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:51:39,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:51:39,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:39,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 78 proven. 84 refuted. 0 times theorem prover too weak. 1462 trivial. 0 not checked. [2022-01-31 19:51:39,588 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:51:39,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319428414] [2022-01-31 19:51:39,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1319428414] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:51:39,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:51:39,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2022-01-31 19:51:39,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217159579] [2022-01-31 19:51:39,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:51:39,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-31 19:51:39,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:51:39,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-31 19:51:39,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=3875, Unknown=0, NotChecked=0, Total=4032 [2022-01-31 19:51:39,590 INFO L87 Difference]: Start difference. First operand 435 states and 489 transitions. Second operand has 64 states, 63 states have (on average 2.746031746031746) internal successors, (173), 60 states have internal predecessors, (173), 53 states have call successors, (56), 3 states have call predecessors, (56), 2 states have return successors, (54), 53 states have call predecessors, (54), 52 states have call successors, (54) [2022-01-31 19:51:46,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:51:46,320 INFO L93 Difference]: Finished difference Result 447 states and 501 transitions. [2022-01-31 19:51:46,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-31 19:51:46,321 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 2.746031746031746) internal successors, (173), 60 states have internal predecessors, (173), 53 states have call successors, (56), 3 states have call predecessors, (56), 2 states have return successors, (54), 53 states have call predecessors, (54), 52 states have call successors, (54) Word has length 433 [2022-01-31 19:51:46,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:51:46,322 INFO L225 Difference]: With dead ends: 447 [2022-01-31 19:51:46,322 INFO L226 Difference]: Without dead ends: 445 [2022-01-31 19:51:46,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2842 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=627, Invalid=14625, Unknown=0, NotChecked=0, Total=15252 [2022-01-31 19:51:46,323 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 355 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 15170 mSolverCounterSat, 397 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 15567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 397 IncrementalHoareTripleChecker+Valid, 15170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-01-31 19:51:46,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 308 Invalid, 15567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [397 Valid, 15170 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-01-31 19:51:46,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2022-01-31 19:51:46,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 435. [2022-01-31 19:51:46,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 323 states have (on average 1.0092879256965945) internal successors, (326), 325 states have internal predecessors, (326), 82 states have call successors, (82), 30 states have call predecessors, (82), 29 states have return successors, (81), 79 states have call predecessors, (81), 81 states have call successors, (81) [2022-01-31 19:51:46,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 489 transitions. [2022-01-31 19:51:46,721 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 489 transitions. Word has length 433 [2022-01-31 19:51:46,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:51:46,721 INFO L470 AbstractCegarLoop]: Abstraction has 435 states and 489 transitions. [2022-01-31 19:51:46,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 2.746031746031746) internal successors, (173), 60 states have internal predecessors, (173), 53 states have call successors, (56), 3 states have call predecessors, (56), 2 states have return successors, (54), 53 states have call predecessors, (54), 52 states have call successors, (54) [2022-01-31 19:51:46,721 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 489 transitions. [2022-01-31 19:51:46,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2022-01-31 19:51:46,722 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:51:46,723 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:51:46,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-01-31 19:51:46,723 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:51:46,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:51:46,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1846745058, now seen corresponding path program 98 times [2022-01-31 19:51:46,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:51:46,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725057549] [2022-01-31 19:51:46,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:51:46,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:51:46,726 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:51:46,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:51:47,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:51:47,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:51:47,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:51:47,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:51:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:51:47,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:51:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:51:47,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:51:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:51:47,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:51:47,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:51:47,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:51:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:51:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:51:47,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:51:47,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:51:47,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:51:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:51:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:51:47,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:51:47,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:51:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:51:47,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:51:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:51:47,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:51:47,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:51:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:51:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:51:47,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:51:47,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:51:47,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:51:47,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:51:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:51:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:51:47,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:51:47,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:51:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:51:47,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:51:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:51:47,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:51:47,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:51:47,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:51:47,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:51:47,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:51:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:51:47,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:51:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:51:47,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:51:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:51:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:51:47,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:51:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:51:47,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:51:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:51:47,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:47,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-01-31 19:51:47,659 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:51:47,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [725057549] [2022-01-31 19:51:47,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [725057549] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:51:47,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:51:47,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-01-31 19:51:47,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138217960] [2022-01-31 19:51:47,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:51:47,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-01-31 19:51:47,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:51:47,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-01-31 19:51:47,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=817, Invalid=2489, Unknown=0, NotChecked=0, Total=3306 [2022-01-31 19:51:47,660 INFO L87 Difference]: Start difference. First operand 435 states and 489 transitions. Second operand has 58 states, 58 states have (on average 2.9827586206896552) internal successors, (173), 57 states have internal predecessors, (173), 54 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 53 states have call predecessors, (55), 53 states have call successors, (55) [2022-01-31 19:51:49,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:51:49,237 INFO L93 Difference]: Finished difference Result 465 states and 523 transitions. [2022-01-31 19:51:49,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-31 19:51:49,238 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.9827586206896552) internal successors, (173), 57 states have internal predecessors, (173), 54 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 53 states have call predecessors, (55), 53 states have call successors, (55) Word has length 441 [2022-01-31 19:51:49,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:51:49,239 INFO L225 Difference]: With dead ends: 465 [2022-01-31 19:51:49,239 INFO L226 Difference]: Without dead ends: 345 [2022-01-31 19:51:49,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3344 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2873, Invalid=9783, Unknown=0, NotChecked=0, Total=12656 [2022-01-31 19:51:49,240 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 659 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1668 mSolverCounterSat, 732 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 2400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 732 IncrementalHoareTripleChecker+Valid, 1668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 19:51:49,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [663 Valid, 119 Invalid, 2400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [732 Valid, 1668 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 19:51:49,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-01-31 19:51:49,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 332. [2022-01-31 19:51:49,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 246 states have (on average 1.008130081300813) internal successors, (248), 247 states have internal predecessors, (248), 57 states have call successors, (57), 29 states have call predecessors, (57), 28 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2022-01-31 19:51:49,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 361 transitions. [2022-01-31 19:51:49,472 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 361 transitions. Word has length 441 [2022-01-31 19:51:49,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:51:49,473 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 361 transitions. [2022-01-31 19:51:49,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.9827586206896552) internal successors, (173), 57 states have internal predecessors, (173), 54 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 53 states have call predecessors, (55), 53 states have call successors, (55) [2022-01-31 19:51:49,473 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 361 transitions. [2022-01-31 19:51:49,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2022-01-31 19:51:49,474 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:51:49,474 INFO L514 BasicCegarLoop]: trace histogram [29, 29, 29, 27, 27, 27, 27, 27, 26, 26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:51:49,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-01-31 19:51:49,474 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:51:49,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:51:49,474 INFO L85 PathProgramCache]: Analyzing trace with hash -428093597, now seen corresponding path program 99 times [2022-01-31 19:51:49,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:51:49,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326202629] [2022-01-31 19:51:49,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:51:49,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:51:49,477 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:51:49,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:51:50,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:51:50,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:51:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:51:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:51:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:51:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:51:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:51:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:51:50,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:51:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:51:50,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:51:50,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:51:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:51:50,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:51:50,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:51:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:51:50,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:51:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:51:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:51:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:51:50,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:51:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:51:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:51:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:51:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:51:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:51:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:51:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:51:50,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:51:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:51:50,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:51:50,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:51:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:51:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:51:50,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:51:50,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:51:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:51:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:51:50,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:51:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:51:50,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:51:50,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:51:50,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:51:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:51:50,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:51:50,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:51:50,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:51:50,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:51:50,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:51:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:51:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:51:50,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:51:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:51:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:51:50,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:51:50,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 81 proven. 81 refuted. 0 times theorem prover too weak. 1462 trivial. 0 not checked. [2022-01-31 19:51:50,979 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:51:50,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326202629] [2022-01-31 19:51:50,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [326202629] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:51:50,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:51:50,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2022-01-31 19:51:50,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189894148] [2022-01-31 19:51:50,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:51:50,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-01-31 19:51:50,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:51:50,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-01-31 19:51:50,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=4002, Unknown=0, NotChecked=0, Total=4160 [2022-01-31 19:51:50,980 INFO L87 Difference]: Start difference. First operand 332 states and 361 transitions. Second operand has 65 states, 64 states have (on average 2.75) internal successors, (176), 61 states have internal predecessors, (176), 54 states have call successors, (57), 3 states have call predecessors, (57), 2 states have return successors, (55), 54 states have call predecessors, (55), 53 states have call successors, (55) [2022-01-31 19:51:58,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:51:58,734 INFO L93 Difference]: Finished difference Result 463 states and 523 transitions. [2022-01-31 19:51:58,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-31 19:51:58,735 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 2.75) internal successors, (176), 61 states have internal predecessors, (176), 54 states have call successors, (57), 3 states have call predecessors, (57), 2 states have return successors, (55), 54 states have call predecessors, (55), 53 states have call successors, (55) Word has length 441 [2022-01-31 19:51:58,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:51:58,736 INFO L225 Difference]: With dead ends: 463 [2022-01-31 19:51:58,736 INFO L226 Difference]: Without dead ends: 461 [2022-01-31 19:51:58,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3008 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=703, Invalid=15553, Unknown=0, NotChecked=0, Total=16256 [2022-01-31 19:51:58,743 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 442 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 18697 mSolverCounterSat, 504 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 19201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 504 IncrementalHoareTripleChecker+Valid, 18697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:51:58,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [444 Valid, 353 Invalid, 19201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [504 Valid, 18697 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-01-31 19:51:58,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-01-31 19:51:59,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 443. [2022-01-31 19:51:59,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 329 states have (on average 1.0091185410334347) internal successors, (332), 331 states have internal predecessors, (332), 84 states have call successors, (84), 30 states have call predecessors, (84), 29 states have return successors, (83), 81 states have call predecessors, (83), 83 states have call successors, (83) [2022-01-31 19:51:59,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 499 transitions. [2022-01-31 19:51:59,162 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 499 transitions. Word has length 441 [2022-01-31 19:51:59,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:51:59,162 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 499 transitions. [2022-01-31 19:51:59,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 64 states have (on average 2.75) internal successors, (176), 61 states have internal predecessors, (176), 54 states have call successors, (57), 3 states have call predecessors, (57), 2 states have return successors, (55), 54 states have call predecessors, (55), 53 states have call successors, (55) [2022-01-31 19:51:59,163 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 499 transitions. [2022-01-31 19:51:59,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2022-01-31 19:51:59,164 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:51:59,164 INFO L514 BasicCegarLoop]: trace histogram [29, 29, 29, 27, 27, 27, 27, 27, 27, 27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:51:59,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-01-31 19:51:59,164 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:51:59,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:51:59,165 INFO L85 PathProgramCache]: Analyzing trace with hash -272009167, now seen corresponding path program 100 times [2022-01-31 19:51:59,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:51:59,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719304054] [2022-01-31 19:51:59,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:51:59,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:51:59,167 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:51:59,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:52:00,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:52:00,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:52:00,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:52:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:52:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:52:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:52:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:52:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:52:00,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:52:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:52:00,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:52:00,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:52:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:52:00,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:52:00,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:52:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:52:00,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:52:00,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:52:00,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:52:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:52:00,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:52:00,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:52:00,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:52:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:52:00,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:52:00,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:52:00,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:52:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:52:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:52:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:52:00,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:52:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:52:00,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:52:00,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:52:00,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:52:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:52:00,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:52:00,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:52:00,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:52:00,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:52:00,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:52:00,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:52:00,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:52:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:52:00,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:52:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:52:00,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:52:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:52:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:52:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:52:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:52:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:52:00,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:52:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:52:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:52:00,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:00,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 84 proven. 78 refuted. 0 times theorem prover too weak. 1462 trivial. 0 not checked. [2022-01-31 19:52:00,763 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:52:00,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719304054] [2022-01-31 19:52:00,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1719304054] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:52:00,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:52:00,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2022-01-31 19:52:00,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435699313] [2022-01-31 19:52:00,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:52:00,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-01-31 19:52:00,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:52:00,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-01-31 19:52:00,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=4131, Unknown=0, NotChecked=0, Total=4290 [2022-01-31 19:52:00,764 INFO L87 Difference]: Start difference. First operand 443 states and 499 transitions. Second operand has 66 states, 65 states have (on average 2.753846153846154) internal successors, (179), 62 states have internal predecessors, (179), 55 states have call successors, (58), 3 states have call predecessors, (58), 2 states have return successors, (56), 55 states have call predecessors, (56), 54 states have call successors, (56) [2022-01-31 19:52:07,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:52:07,688 INFO L93 Difference]: Finished difference Result 471 states and 531 transitions. [2022-01-31 19:52:07,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-31 19:52:07,688 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 2.753846153846154) internal successors, (179), 62 states have internal predecessors, (179), 55 states have call successors, (58), 3 states have call predecessors, (58), 2 states have return successors, (56), 55 states have call predecessors, (56), 54 states have call successors, (56) Word has length 449 [2022-01-31 19:52:07,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:52:07,689 INFO L225 Difference]: With dead ends: 471 [2022-01-31 19:52:07,689 INFO L226 Difference]: Without dead ends: 469 [2022-01-31 19:52:07,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3106 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=662, Invalid=16108, Unknown=0, NotChecked=0, Total=16770 [2022-01-31 19:52:07,690 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 533 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 17893 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 18478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 17893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-01-31 19:52:07,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [535 Valid, 258 Invalid, 18478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [585 Valid, 17893 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-01-31 19:52:07,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-01-31 19:52:08,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 451. [2022-01-31 19:52:08,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 335 states have (on average 1.008955223880597) internal successors, (338), 337 states have internal predecessors, (338), 85 states have call successors, (85), 31 states have call predecessors, (85), 30 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2022-01-31 19:52:08,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 507 transitions. [2022-01-31 19:52:08,127 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 507 transitions. Word has length 449 [2022-01-31 19:52:08,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:52:08,127 INFO L470 AbstractCegarLoop]: Abstraction has 451 states and 507 transitions. [2022-01-31 19:52:08,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 2.753846153846154) internal successors, (179), 62 states have internal predecessors, (179), 55 states have call successors, (58), 3 states have call predecessors, (58), 2 states have return successors, (56), 55 states have call predecessors, (56), 54 states have call successors, (56) [2022-01-31 19:52:08,127 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 507 transitions. [2022-01-31 19:52:08,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2022-01-31 19:52:08,129 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:52:08,129 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 28, 28, 28, 28, 28, 26, 26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:52:08,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-01-31 19:52:08,129 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:52:08,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:52:08,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1748119474, now seen corresponding path program 101 times [2022-01-31 19:52:08,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:52:08,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848621031] [2022-01-31 19:52:08,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:52:08,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:52:08,132 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:52:08,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:52:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:52:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:52:09,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:52:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:52:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:52:09,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:52:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:52:09,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:52:09,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:52:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:52:09,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:52:09,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:52:09,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:52:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:52:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:52:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:52:09,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:52:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:52:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:52:09,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:52:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:52:09,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:52:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:52:09,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:52:09,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:52:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:52:09,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:52:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:52:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:52:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:52:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:52:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:52:09,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:52:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:52:09,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:52:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:52:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:52:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:52:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:52:09,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:52:09,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:52:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:52:09,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:52:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:52:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:52:09,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:52:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:52:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:52:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:52:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:52:09,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:52:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:52:09,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:52:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:52:09,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:52:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:09,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 81 proven. 87 refuted. 0 times theorem prover too weak. 1572 trivial. 0 not checked. [2022-01-31 19:52:09,697 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:52:09,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848621031] [2022-01-31 19:52:09,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [848621031] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:52:09,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:52:09,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67 [2022-01-31 19:52:09,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404641866] [2022-01-31 19:52:09,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:52:09,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-01-31 19:52:09,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:52:09,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-01-31 19:52:09,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=4257, Unknown=0, NotChecked=0, Total=4422 [2022-01-31 19:52:09,698 INFO L87 Difference]: Start difference. First operand 451 states and 507 transitions. Second operand has 67 states, 65 states have (on average 2.753846153846154) internal successors, (179), 63 states have internal predecessors, (179), 55 states have call successors, (58), 3 states have call predecessors, (58), 2 states have return successors, (56), 55 states have call predecessors, (56), 54 states have call successors, (56) [2022-01-31 19:52:17,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:52:17,350 INFO L93 Difference]: Finished difference Result 463 states and 519 transitions. [2022-01-31 19:52:17,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-31 19:52:17,351 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 65 states have (on average 2.753846153846154) internal successors, (179), 63 states have internal predecessors, (179), 55 states have call successors, (58), 3 states have call predecessors, (58), 2 states have return successors, (56), 55 states have call predecessors, (56), 54 states have call successors, (56) Word has length 449 [2022-01-31 19:52:17,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:52:17,352 INFO L225 Difference]: With dead ends: 463 [2022-01-31 19:52:17,352 INFO L226 Difference]: Without dead ends: 461 [2022-01-31 19:52:17,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3094 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=656, Invalid=15856, Unknown=0, NotChecked=0, Total=16512 [2022-01-31 19:52:17,353 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 384 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 15978 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 16406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 15978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:52:17,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 291 Invalid, 16406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [428 Valid, 15978 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-01-31 19:52:17,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-01-31 19:52:17,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 451. [2022-01-31 19:52:17,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 335 states have (on average 1.008955223880597) internal successors, (338), 337 states have internal predecessors, (338), 85 states have call successors, (85), 31 states have call predecessors, (85), 30 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2022-01-31 19:52:17,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 507 transitions. [2022-01-31 19:52:17,781 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 507 transitions. Word has length 449 [2022-01-31 19:52:17,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:52:17,781 INFO L470 AbstractCegarLoop]: Abstraction has 451 states and 507 transitions. [2022-01-31 19:52:17,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 65 states have (on average 2.753846153846154) internal successors, (179), 63 states have internal predecessors, (179), 55 states have call successors, (58), 3 states have call predecessors, (58), 2 states have return successors, (56), 55 states have call predecessors, (56), 54 states have call successors, (56) [2022-01-31 19:52:17,781 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 507 transitions. [2022-01-31 19:52:17,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2022-01-31 19:52:17,783 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:52:17,783 INFO L514 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:52:17,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-01-31 19:52:17,783 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:52:17,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:52:17,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1811909889, now seen corresponding path program 102 times [2022-01-31 19:52:17,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:52:17,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205529219] [2022-01-31 19:52:17,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:52:17,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:52:17,786 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:52:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:52:18,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:52:18,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:52:18,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:52:18,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:52:18,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:52:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:52:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:52:18,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:52:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:52:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:52:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:52:18,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:52:18,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:52:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:52:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:52:18,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:52:18,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:52:18,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:52:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:52:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:52:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:52:18,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:52:18,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:52:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:52:18,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:52:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:52:18,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:52:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:52:18,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:52:18,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:52:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:52:18,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:52:18,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:52:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:52:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:52:18,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:52:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:52:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:52:18,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:52:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:52:18,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:52:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:52:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:52:18,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:52:18,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:52:18,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:52:18,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:52:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:52:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:52:18,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:52:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:52:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:52:18,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:52:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:52:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:52:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:52:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:18,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2022-01-31 19:52:18,552 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:52:18,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205529219] [2022-01-31 19:52:18,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [205529219] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:52:18,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:52:18,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2022-01-31 19:52:18,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410789851] [2022-01-31 19:52:18,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:52:18,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-01-31 19:52:18,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:52:18,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-01-31 19:52:18,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=875, Invalid=2665, Unknown=0, NotChecked=0, Total=3540 [2022-01-31 19:52:18,554 INFO L87 Difference]: Start difference. First operand 451 states and 507 transitions. Second operand has 60 states, 60 states have (on average 2.9833333333333334) internal successors, (179), 59 states have internal predecessors, (179), 56 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 55 states have call predecessors, (57), 55 states have call successors, (57) [2022-01-31 19:52:20,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:52:20,447 INFO L93 Difference]: Finished difference Result 481 states and 541 transitions. [2022-01-31 19:52:20,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-31 19:52:20,447 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.9833333333333334) internal successors, (179), 59 states have internal predecessors, (179), 56 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 55 states have call predecessors, (57), 55 states have call successors, (57) Word has length 457 [2022-01-31 19:52:20,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:52:20,448 INFO L225 Difference]: With dead ends: 481 [2022-01-31 19:52:20,448 INFO L226 Difference]: Without dead ends: 357 [2022-01-31 19:52:20,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3594 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=3077, Invalid=10495, Unknown=0, NotChecked=0, Total=13572 [2022-01-31 19:52:20,451 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 577 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1806 mSolverCounterSat, 645 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 2451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 645 IncrementalHoareTripleChecker+Valid, 1806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 19:52:20,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [581 Valid, 121 Invalid, 2451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [645 Valid, 1806 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 19:52:20,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-01-31 19:52:20,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 344. [2022-01-31 19:52:20,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 255 states have (on average 1.007843137254902) internal successors, (257), 256 states have internal predecessors, (257), 59 states have call successors, (59), 30 states have call predecessors, (59), 29 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) [2022-01-31 19:52:20,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 374 transitions. [2022-01-31 19:52:20,713 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 374 transitions. Word has length 457 [2022-01-31 19:52:20,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:52:20,714 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 374 transitions. [2022-01-31 19:52:20,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.9833333333333334) internal successors, (179), 59 states have internal predecessors, (179), 56 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 55 states have call predecessors, (57), 55 states have call successors, (57) [2022-01-31 19:52:20,714 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 374 transitions. [2022-01-31 19:52:20,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2022-01-31 19:52:20,715 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:52:20,715 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 28, 28, 28, 28, 28, 27, 27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:52:20,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-01-31 19:52:20,715 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:52:20,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:52:20,716 INFO L85 PathProgramCache]: Analyzing trace with hash -969008768, now seen corresponding path program 103 times [2022-01-31 19:52:20,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:52:20,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934718217] [2022-01-31 19:52:20,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:52:20,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:52:20,719 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:52:20,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:52:22,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:52:22,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:52:22,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:52:22,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:52:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:52:22,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:52:22,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:52:22,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:52:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:52:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:52:22,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:52:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:52:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:52:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:52:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:52:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:52:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:52:22,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:52:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:52:22,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:52:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:52:22,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:52:22,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:52:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:52:22,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:52:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:52:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:52:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:52:22,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:52:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:52:22,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:52:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:52:22,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:52:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:52:22,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:52:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:52:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:52:22,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:52:22,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:52:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:52:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:52:22,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:52:22,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:52:22,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:52:22,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:52:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:52:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:52:22,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:52:22,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:52:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:52:22,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:52:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:52:22,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:52:22,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:52:22,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:52:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:52:22,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:22,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 84 proven. 84 refuted. 0 times theorem prover too weak. 1572 trivial. 0 not checked. [2022-01-31 19:52:22,434 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:52:22,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [934718217] [2022-01-31 19:52:22,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [934718217] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:52:22,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:52:22,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2022-01-31 19:52:22,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659553697] [2022-01-31 19:52:22,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:52:22,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-01-31 19:52:22,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:52:22,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-01-31 19:52:22,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=4390, Unknown=0, NotChecked=0, Total=4556 [2022-01-31 19:52:22,436 INFO L87 Difference]: Start difference. First operand 344 states and 374 transitions. Second operand has 68 states, 66 states have (on average 2.757575757575758) internal successors, (182), 64 states have internal predecessors, (182), 56 states have call successors, (59), 3 states have call predecessors, (59), 2 states have return successors, (57), 56 states have call predecessors, (57), 55 states have call successors, (57) [2022-01-31 19:52:31,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:52:31,643 INFO L93 Difference]: Finished difference Result 479 states and 541 transitions. [2022-01-31 19:52:31,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-31 19:52:31,643 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 66 states have (on average 2.757575757575758) internal successors, (182), 64 states have internal predecessors, (182), 56 states have call successors, (59), 3 states have call predecessors, (59), 2 states have return successors, (57), 56 states have call predecessors, (57), 55 states have call successors, (57) Word has length 457 [2022-01-31 19:52:31,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:52:31,644 INFO L225 Difference]: With dead ends: 479 [2022-01-31 19:52:31,644 INFO L226 Difference]: Without dead ends: 477 [2022-01-31 19:52:31,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3266 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=734, Invalid=16822, Unknown=0, NotChecked=0, Total=17556 [2022-01-31 19:52:31,645 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 561 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 18926 mSolverCounterSat, 620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 19546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 18926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:52:31,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [563 Valid, 307 Invalid, 19546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [620 Valid, 18926 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-01-31 19:52:31,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-01-31 19:52:32,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 459. [2022-01-31 19:52:32,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 341 states have (on average 1.0087976539589443) internal successors, (344), 343 states have internal predecessors, (344), 87 states have call successors, (87), 31 states have call predecessors, (87), 30 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2022-01-31 19:52:32,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 517 transitions. [2022-01-31 19:52:32,096 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 517 transitions. Word has length 457 [2022-01-31 19:52:32,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:52:32,096 INFO L470 AbstractCegarLoop]: Abstraction has 459 states and 517 transitions. [2022-01-31 19:52:32,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 66 states have (on average 2.757575757575758) internal successors, (182), 64 states have internal predecessors, (182), 56 states have call successors, (59), 3 states have call predecessors, (59), 2 states have return successors, (57), 56 states have call predecessors, (57), 55 states have call successors, (57) [2022-01-31 19:52:32,096 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 517 transitions. [2022-01-31 19:52:32,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2022-01-31 19:52:32,098 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:52:32,098 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 28, 28, 28, 28, 28, 28, 28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:52:32,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-01-31 19:52:32,098 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:52:32,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:52:32,098 INFO L85 PathProgramCache]: Analyzing trace with hash -2124262066, now seen corresponding path program 104 times [2022-01-31 19:52:32,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:52:32,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910882265] [2022-01-31 19:52:32,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:52:32,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:52:32,101 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:52:32,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:52:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:52:33,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:52:33,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:52:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:52:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:52:33,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:52:33,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:52:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:52:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:52:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:52:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:52:33,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:52:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:52:33,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:52:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:52:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:52:33,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:52:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:52:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:52:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:52:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:52:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:52:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:52:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:52:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:52:33,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:52:33,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:52:33,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:52:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:52:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:52:33,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:52:33,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:52:33,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:52:33,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:52:33,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:52:33,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:52:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:52:33,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:52:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:52:33,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:52:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:52:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:52:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:52:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:52:33,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:52:33,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:52:33,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:52:33,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:52:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:52:33,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:52:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:52:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:52:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:52:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:52:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:52:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:52:33,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:52:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:33,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 87 proven. 81 refuted. 0 times theorem prover too weak. 1572 trivial. 0 not checked. [2022-01-31 19:52:33,841 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:52:33,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910882265] [2022-01-31 19:52:33,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1910882265] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:52:33,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:52:33,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2022-01-31 19:52:33,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354011475] [2022-01-31 19:52:33,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:52:33,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-01-31 19:52:33,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:52:33,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-01-31 19:52:33,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=4392, Unknown=0, NotChecked=0, Total=4556 [2022-01-31 19:52:33,842 INFO L87 Difference]: Start difference. First operand 459 states and 517 transitions. Second operand has 68 states, 67 states have (on average 2.7611940298507465) internal successors, (185), 64 states have internal predecessors, (185), 57 states have call successors, (60), 3 states have call predecessors, (60), 2 states have return successors, (58), 57 states have call predecessors, (58), 56 states have call successors, (58) [2022-01-31 19:52:43,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:52:43,044 INFO L93 Difference]: Finished difference Result 487 states and 549 transitions. [2022-01-31 19:52:43,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-31 19:52:43,045 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 2.7611940298507465) internal successors, (185), 64 states have internal predecessors, (185), 57 states have call successors, (60), 3 states have call predecessors, (60), 2 states have return successors, (58), 57 states have call predecessors, (58), 56 states have call successors, (58) Word has length 465 [2022-01-31 19:52:43,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:52:43,046 INFO L225 Difference]: With dead ends: 487 [2022-01-31 19:52:43,046 INFO L226 Difference]: Without dead ends: 485 [2022-01-31 19:52:43,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3303 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=683, Invalid=17139, Unknown=0, NotChecked=0, Total=17822 [2022-01-31 19:52:43,047 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 474 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 20642 mSolverCounterSat, 533 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 21175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 533 IncrementalHoareTripleChecker+Valid, 20642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-01-31 19:52:43,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [476 Valid, 359 Invalid, 21175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [533 Valid, 20642 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-01-31 19:52:43,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-01-31 19:52:43,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 467. [2022-01-31 19:52:43,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 347 states have (on average 1.0086455331412103) internal successors, (350), 349 states have internal predecessors, (350), 88 states have call successors, (88), 32 states have call predecessors, (88), 31 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2022-01-31 19:52:43,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 525 transitions. [2022-01-31 19:52:43,512 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 525 transitions. Word has length 465 [2022-01-31 19:52:43,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:52:43,512 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 525 transitions. [2022-01-31 19:52:43,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 67 states have (on average 2.7611940298507465) internal successors, (185), 64 states have internal predecessors, (185), 57 states have call successors, (60), 3 states have call predecessors, (60), 2 states have return successors, (58), 57 states have call predecessors, (58), 56 states have call successors, (58) [2022-01-31 19:52:43,512 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 525 transitions. [2022-01-31 19:52:43,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2022-01-31 19:52:43,514 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:52:43,514 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 31, 29, 29, 29, 29, 29, 27, 27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:52:43,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-01-31 19:52:43,514 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:52:43,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:52:43,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1281360945, now seen corresponding path program 105 times [2022-01-31 19:52:43,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:52:43,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526283803] [2022-01-31 19:52:43,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:52:43,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:52:43,517 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:52:43,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:44,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:52:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:44,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:52:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:44,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:52:44,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:44,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:52:44,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:44,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:52:44,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:44,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:52:44,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:44,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:52:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:44,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:52:44,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:44,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:52:44,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:44,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:52:44,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:44,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:52:44,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:44,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:52:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:44,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:52:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:44,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:52:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:44,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:52:44,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:44,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:52:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:44,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:52:44,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:44,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:52:44,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:44,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:52:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:44,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:52:44,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:44,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:52:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:44,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:52:44,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:44,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:52:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:44,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:52:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:44,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:52:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:44,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:52:45,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:45,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:52:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:45,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:52:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:45,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:52:45,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:45,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:52:45,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:45,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:52:45,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:45,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:52:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:45,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:52:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:45,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:52:45,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:45,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:52:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:45,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:52:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:45,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:52:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:45,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:52:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:45,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:52:45,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:45,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:52:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:45,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:52:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:45,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:52:45,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:45,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:52:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:45,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:52:45,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:45,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:52:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:45,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:52:45,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:45,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:52:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:45,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:52:45,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:45,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:52:45,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:45,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:52:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:45,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:52:45,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:45,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:52:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:45,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:52:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:45,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:52:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:45,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:52:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:45,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:52:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:45,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:52:45,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:45,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:52:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:45,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 84 proven. 90 refuted. 0 times theorem prover too weak. 1686 trivial. 0 not checked. [2022-01-31 19:52:45,059 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:52:45,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526283803] [2022-01-31 19:52:45,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1526283803] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:52:45,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:52:45,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2022-01-31 19:52:45,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550836096] [2022-01-31 19:52:45,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:52:45,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-01-31 19:52:45,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:52:45,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-01-31 19:52:45,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=4389, Unknown=0, NotChecked=0, Total=4556 [2022-01-31 19:52:45,061 INFO L87 Difference]: Start difference. First operand 467 states and 525 transitions. Second operand has 68 states, 67 states have (on average 2.7611940298507465) internal successors, (185), 64 states have internal predecessors, (185), 57 states have call successors, (60), 3 states have call predecessors, (60), 2 states have return successors, (58), 57 states have call predecessors, (58), 56 states have call successors, (58) [2022-01-31 19:52:51,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:52:51,731 INFO L93 Difference]: Finished difference Result 479 states and 537 transitions. [2022-01-31 19:52:51,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-31 19:52:51,731 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 2.7611940298507465) internal successors, (185), 64 states have internal predecessors, (185), 57 states have call successors, (60), 3 states have call predecessors, (60), 2 states have return successors, (58), 57 states have call predecessors, (58), 56 states have call successors, (58) Word has length 465 [2022-01-31 19:52:51,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:52:51,732 INFO L225 Difference]: With dead ends: 479 [2022-01-31 19:52:51,733 INFO L226 Difference]: Without dead ends: 477 [2022-01-31 19:52:51,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3226 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=669, Invalid=16623, Unknown=0, NotChecked=0, Total=17292 [2022-01-31 19:52:51,733 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 394 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 17102 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 17541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 17102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:52:51,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [396 Valid, 307 Invalid, 17541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 17102 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-01-31 19:52:51,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-01-31 19:52:52,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 467. [2022-01-31 19:52:52,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 347 states have (on average 1.0086455331412103) internal successors, (350), 349 states have internal predecessors, (350), 88 states have call successors, (88), 32 states have call predecessors, (88), 31 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2022-01-31 19:52:52,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 525 transitions. [2022-01-31 19:52:52,203 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 525 transitions. Word has length 465 [2022-01-31 19:52:52,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:52:52,205 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 525 transitions. [2022-01-31 19:52:52,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 67 states have (on average 2.7611940298507465) internal successors, (185), 64 states have internal predecessors, (185), 57 states have call successors, (60), 3 states have call predecessors, (60), 2 states have return successors, (58), 57 states have call predecessors, (58), 56 states have call successors, (58) [2022-01-31 19:52:52,205 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 525 transitions. [2022-01-31 19:52:52,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2022-01-31 19:52:52,207 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:52:52,207 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 29, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:52:52,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-01-31 19:52:52,207 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:52:52,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:52:52,208 INFO L85 PathProgramCache]: Analyzing trace with hash -315825380, now seen corresponding path program 106 times [2022-01-31 19:52:52,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:52:52,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349065533] [2022-01-31 19:52:52,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:52:52,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:52:52,210 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:52:52,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:52:52,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:52:52,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:52:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:52:52,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:52:52,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:52:52,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:52:52,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:52:52,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:52:52,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:52:52,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:52:52,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:52:52,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:52:52,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:52:52,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:52:52,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:52:52,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:52:52,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:52:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:52:52,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:52:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:52:52,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:52:52,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:52:52,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:52:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:52:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:52:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:52:52,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:52:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:52:52,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:52:52,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:52:52,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:52:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:52:52,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:52:52,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:52:52,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:52:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:52:52,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:52:52,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:52:52,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:52:52,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:52:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:52:52,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:52:52,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:52:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:52:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:52:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:52:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:52:52,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:52:52,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:52:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:52:52,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:52:52,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:52:52,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:52:52,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:52:52,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:52:52,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:52:52,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:52:52,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:52:52,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:52,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-01-31 19:52:52,884 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:52:52,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [349065533] [2022-01-31 19:52:52,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [349065533] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:52:52,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:52:52,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-01-31 19:52:52,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045641233] [2022-01-31 19:52:52,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:52:52,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-01-31 19:52:52,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:52:52,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-01-31 19:52:52,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=935, Invalid=2847, Unknown=0, NotChecked=0, Total=3782 [2022-01-31 19:52:52,885 INFO L87 Difference]: Start difference. First operand 467 states and 525 transitions. Second operand has 62 states, 62 states have (on average 2.9838709677419355) internal successors, (185), 61 states have internal predecessors, (185), 58 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 57 states have call predecessors, (59), 57 states have call successors, (59) [2022-01-31 19:52:54,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:52:54,670 INFO L93 Difference]: Finished difference Result 497 states and 559 transitions. [2022-01-31 19:52:54,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-31 19:52:54,670 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.9838709677419355) internal successors, (185), 61 states have internal predecessors, (185), 58 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 57 states have call predecessors, (59), 57 states have call successors, (59) Word has length 473 [2022-01-31 19:52:54,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:52:54,671 INFO L225 Difference]: With dead ends: 497 [2022-01-31 19:52:54,671 INFO L226 Difference]: Without dead ends: 369 [2022-01-31 19:52:54,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3853 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=3288, Invalid=11232, Unknown=0, NotChecked=0, Total=14520 [2022-01-31 19:52:54,672 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 635 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1585 mSolverCounterSat, 716 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 2301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 716 IncrementalHoareTripleChecker+Valid, 1585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 19:52:54,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [639 Valid, 123 Invalid, 2301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [716 Valid, 1585 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 19:52:54,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-01-31 19:52:54,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 356. [2022-01-31 19:52:54,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 264 states have (on average 1.0075757575757576) internal successors, (266), 265 states have internal predecessors, (266), 61 states have call successors, (61), 31 states have call predecessors, (61), 30 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2022-01-31 19:52:54,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 387 transitions. [2022-01-31 19:52:54,939 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 387 transitions. Word has length 473 [2022-01-31 19:52:54,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:52:54,939 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 387 transitions. [2022-01-31 19:52:54,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.9838709677419355) internal successors, (185), 61 states have internal predecessors, (185), 58 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 57 states have call predecessors, (59), 57 states have call successors, (59) [2022-01-31 19:52:54,939 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 387 transitions. [2022-01-31 19:52:54,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2022-01-31 19:52:54,941 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:52:54,941 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 31, 29, 29, 29, 29, 29, 28, 28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:52:54,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-01-31 19:52:54,941 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:52:54,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:52:54,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1461684067, now seen corresponding path program 107 times [2022-01-31 19:52:54,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:52:54,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144111027] [2022-01-31 19:52:54,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:52:54,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:52:54,944 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:52:55,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:52:56,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:52:56,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:52:56,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:52:56,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:52:56,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:52:56,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:52:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:52:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:52:56,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:52:56,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:52:56,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:52:56,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:52:56,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:52:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:52:56,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:52:56,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:52:56,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:52:56,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:52:56,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:52:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:52:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:52:56,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:52:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:52:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:52:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:52:56,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:52:56,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:52:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:52:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:52:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:52:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:52:56,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:52:56,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:52:56,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:52:56,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:52:56,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:52:56,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:52:56,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:52:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:52:56,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:52:56,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:52:56,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:52:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:52:56,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:52:56,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:52:56,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:52:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:52:56,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:52:56,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:52:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:52:56,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:52:56,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:52:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:52:56,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:52:56,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:52:56,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:52:56,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:52:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:52:56,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:52:56,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 87 proven. 87 refuted. 0 times theorem prover too weak. 1686 trivial. 0 not checked. [2022-01-31 19:52:56,559 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:52:56,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144111027] [2022-01-31 19:52:56,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1144111027] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:52:56,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:52:56,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69 [2022-01-31 19:52:56,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25334684] [2022-01-31 19:52:56,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:52:56,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-01-31 19:52:56,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:52:56,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-01-31 19:52:56,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=4524, Unknown=0, NotChecked=0, Total=4692 [2022-01-31 19:52:56,561 INFO L87 Difference]: Start difference. First operand 356 states and 387 transitions. Second operand has 69 states, 68 states have (on average 2.764705882352941) internal successors, (188), 65 states have internal predecessors, (188), 58 states have call successors, (61), 3 states have call predecessors, (61), 2 states have return successors, (59), 58 states have call predecessors, (59), 57 states have call successors, (59) [2022-01-31 19:53:05,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:53:05,070 INFO L93 Difference]: Finished difference Result 495 states and 559 transitions. [2022-01-31 19:53:05,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-31 19:53:05,070 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 2.764705882352941) internal successors, (188), 65 states have internal predecessors, (188), 58 states have call successors, (61), 3 states have call predecessors, (61), 2 states have return successors, (59), 58 states have call predecessors, (59), 57 states have call successors, (59) Word has length 473 [2022-01-31 19:53:05,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:53:05,072 INFO L225 Difference]: With dead ends: 495 [2022-01-31 19:53:05,072 INFO L226 Difference]: Without dead ends: 493 [2022-01-31 19:53:05,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3402 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=749, Invalid=17611, Unknown=0, NotChecked=0, Total=18360 [2022-01-31 19:53:05,073 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 509 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 20698 mSolverCounterSat, 573 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 21271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 573 IncrementalHoareTripleChecker+Valid, 20698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-01-31 19:53:05,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [511 Valid, 332 Invalid, 21271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [573 Valid, 20698 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-01-31 19:53:05,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-01-31 19:53:05,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 475. [2022-01-31 19:53:05,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 353 states have (on average 1.0084985835694051) internal successors, (356), 355 states have internal predecessors, (356), 90 states have call successors, (90), 32 states have call predecessors, (90), 31 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-01-31 19:53:05,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 535 transitions. [2022-01-31 19:53:05,558 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 535 transitions. Word has length 473 [2022-01-31 19:53:05,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:53:05,558 INFO L470 AbstractCegarLoop]: Abstraction has 475 states and 535 transitions. [2022-01-31 19:53:05,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 68 states have (on average 2.764705882352941) internal successors, (188), 65 states have internal predecessors, (188), 58 states have call successors, (61), 3 states have call predecessors, (61), 2 states have return successors, (59), 58 states have call predecessors, (59), 57 states have call successors, (59) [2022-01-31 19:53:05,558 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 535 transitions. [2022-01-31 19:53:05,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2022-01-31 19:53:05,560 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:53:05,560 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 31, 29, 29, 29, 29, 29, 29, 29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:53:05,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-01-31 19:53:05,560 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:53:05,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:53:05,560 INFO L85 PathProgramCache]: Analyzing trace with hash -755611797, now seen corresponding path program 108 times [2022-01-31 19:53:05,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:53:05,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614136838] [2022-01-31 19:53:05,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:53:05,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:53:05,563 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:53:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:53:07,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:53:07,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:53:07,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:53:07,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:53:07,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:53:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:53:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:53:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:53:07,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:53:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:53:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:53:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:53:07,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:53:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:53:07,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:53:07,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:53:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:53:07,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:53:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:53:07,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:53:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:53:07,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:53:07,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:53:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:53:07,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:53:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:53:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:53:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:53:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:53:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:53:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:53:07,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:53:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:53:07,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:53:07,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:53:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:53:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:53:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:53:07,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:53:07,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:53:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:53:07,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:53:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:53:07,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:53:07,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:53:07,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:53:07,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:53:07,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:53:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:53:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:53:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:53:07,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:53:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:53:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:53:07,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:53:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:53:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:53:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:53:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 19:53:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:07,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 90 proven. 84 refuted. 0 times theorem prover too weak. 1686 trivial. 0 not checked. [2022-01-31 19:53:07,278 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:53:07,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614136838] [2022-01-31 19:53:07,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [614136838] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:53:07,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:53:07,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2022-01-31 19:53:07,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332645510] [2022-01-31 19:53:07,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:53:07,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-01-31 19:53:07,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:53:07,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-01-31 19:53:07,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=4661, Unknown=0, NotChecked=0, Total=4830 [2022-01-31 19:53:07,279 INFO L87 Difference]: Start difference. First operand 475 states and 535 transitions. Second operand has 70 states, 69 states have (on average 2.7681159420289854) internal successors, (191), 66 states have internal predecessors, (191), 59 states have call successors, (62), 3 states have call predecessors, (62), 2 states have return successors, (60), 59 states have call predecessors, (60), 58 states have call successors, (60) [2022-01-31 19:53:17,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:53:17,209 INFO L93 Difference]: Finished difference Result 503 states and 567 transitions. [2022-01-31 19:53:17,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-31 19:53:17,209 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 2.7681159420289854) internal successors, (191), 66 states have internal predecessors, (191), 59 states have call successors, (62), 3 states have call predecessors, (62), 2 states have return successors, (60), 59 states have call predecessors, (60), 58 states have call successors, (60) Word has length 481 [2022-01-31 19:53:17,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:53:17,211 INFO L225 Difference]: With dead ends: 503 [2022-01-31 19:53:17,211 INFO L226 Difference]: Without dead ends: 501 [2022-01-31 19:53:17,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3506 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=704, Invalid=18202, Unknown=0, NotChecked=0, Total=18906 [2022-01-31 19:53:17,212 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 525 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 21070 mSolverCounterSat, 582 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 21652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 582 IncrementalHoareTripleChecker+Valid, 21070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-01-31 19:53:17,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [527 Valid, 327 Invalid, 21652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [582 Valid, 21070 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-01-31 19:53:17,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2022-01-31 19:53:17,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 483. [2022-01-31 19:53:17,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 359 states have (on average 1.0083565459610029) internal successors, (362), 361 states have internal predecessors, (362), 91 states have call successors, (91), 33 states have call predecessors, (91), 32 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2022-01-31 19:53:17,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 543 transitions. [2022-01-31 19:53:17,710 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 543 transitions. Word has length 481 [2022-01-31 19:53:17,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:53:17,710 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 543 transitions. [2022-01-31 19:53:17,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 2.7681159420289854) internal successors, (191), 66 states have internal predecessors, (191), 59 states have call successors, (62), 3 states have call predecessors, (62), 2 states have return successors, (60), 59 states have call predecessors, (60), 58 states have call successors, (60) [2022-01-31 19:53:17,710 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 543 transitions. [2022-01-31 19:53:17,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2022-01-31 19:53:17,712 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:53:17,712 INFO L514 BasicCegarLoop]: trace histogram [32, 32, 32, 30, 30, 30, 30, 30, 28, 28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:53:17,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-01-31 19:53:17,712 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:53:17,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:53:17,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1901470484, now seen corresponding path program 109 times [2022-01-31 19:53:17,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:53:17,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575465879] [2022-01-31 19:53:17,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:53:17,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:53:17,715 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:53:17,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:53:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:53:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:53:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:53:19,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:53:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:53:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:53:19,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:53:19,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:53:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:53:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:53:19,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:53:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:53:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:53:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:53:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:53:19,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:53:19,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:53:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:53:19,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:53:19,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:53:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:53:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:53:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:53:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:53:19,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:53:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:53:19,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:53:19,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:53:19,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:53:19,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:53:19,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:53:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:53:19,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:53:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:53:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:53:19,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:53:19,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:53:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:53:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:53:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:53:19,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:53:19,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:53:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:53:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:53:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:53:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:53:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:53:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:53:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:53:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:53:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:53:19,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:53:19,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:53:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:53:19,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:53:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:53:19,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:53:19,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:53:19,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 19:53:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:19,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 87 proven. 93 refuted. 0 times theorem prover too weak. 1804 trivial. 0 not checked. [2022-01-31 19:53:19,307 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:53:19,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575465879] [2022-01-31 19:53:19,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [575465879] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:53:19,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:53:19,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2022-01-31 19:53:19,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273317948] [2022-01-31 19:53:19,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:53:19,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-01-31 19:53:19,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:53:19,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-01-31 19:53:19,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=4658, Unknown=0, NotChecked=0, Total=4830 [2022-01-31 19:53:19,309 INFO L87 Difference]: Start difference. First operand 483 states and 543 transitions. Second operand has 70 states, 69 states have (on average 2.7681159420289854) internal successors, (191), 66 states have internal predecessors, (191), 59 states have call successors, (62), 3 states have call predecessors, (62), 2 states have return successors, (60), 59 states have call predecessors, (60), 58 states have call successors, (60) [2022-01-31 19:53:26,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:53:26,086 INFO L93 Difference]: Finished difference Result 495 states and 555 transitions. [2022-01-31 19:53:26,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-31 19:53:26,086 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 2.7681159420289854) internal successors, (191), 66 states have internal predecessors, (191), 59 states have call successors, (62), 3 states have call predecessors, (62), 2 states have return successors, (60), 59 states have call predecessors, (60), 58 states have call successors, (60) Word has length 481 [2022-01-31 19:53:26,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:53:26,087 INFO L225 Difference]: With dead ends: 495 [2022-01-31 19:53:26,087 INFO L226 Difference]: Without dead ends: 493 [2022-01-31 19:53:26,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3427 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=690, Invalid=17670, Unknown=0, NotChecked=0, Total=18360 [2022-01-31 19:53:26,089 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 363 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 17844 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 18255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 17844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:53:26,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 289 Invalid, 18255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 17844 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-01-31 19:53:26,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-01-31 19:53:26,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 483. [2022-01-31 19:53:26,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 359 states have (on average 1.0083565459610029) internal successors, (362), 361 states have internal predecessors, (362), 91 states have call successors, (91), 33 states have call predecessors, (91), 32 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2022-01-31 19:53:26,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 543 transitions. [2022-01-31 19:53:26,597 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 543 transitions. Word has length 481 [2022-01-31 19:53:26,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:53:26,597 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 543 transitions. [2022-01-31 19:53:26,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 2.7681159420289854) internal successors, (191), 66 states have internal predecessors, (191), 59 states have call successors, (62), 3 states have call predecessors, (62), 2 states have return successors, (60), 59 states have call predecessors, (60), 58 states have call successors, (60) [2022-01-31 19:53:26,597 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 543 transitions. [2022-01-31 19:53:26,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2022-01-31 19:53:26,599 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:53:26,599 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:53:26,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-01-31 19:53:26,599 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:53:26,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:53:26,600 INFO L85 PathProgramCache]: Analyzing trace with hash 2020567097, now seen corresponding path program 110 times [2022-01-31 19:53:26,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:53:26,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177016901] [2022-01-31 19:53:26,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:53:26,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:53:26,602 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:53:26,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:53:27,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:53:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:53:27,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:53:27,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:53:27,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:53:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:53:27,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:53:27,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:53:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:53:27,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:53:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:53:27,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:53:27,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:53:27,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:53:27,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:53:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:53:27,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:53:27,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:53:27,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:53:27,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:53:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:53:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:53:27,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:53:27,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:53:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:53:27,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:53:27,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:53:27,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:53:27,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:53:27,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:53:27,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:53:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:53:27,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:53:27,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:53:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:53:27,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:53:27,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:53:27,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:53:27,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:53:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:53:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:53:27,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:53:27,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:53:27,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:53:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:53:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:53:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:53:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:53:27,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:53:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:53:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:53:27,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:53:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:53:27,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:53:27,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:53:27,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:53:27,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:53:27,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:53:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 19:53:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 19:53:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:27,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2022-01-31 19:53:27,634 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:53:27,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177016901] [2022-01-31 19:53:27,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [177016901] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:53:27,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:53:27,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2022-01-31 19:53:27,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558518867] [2022-01-31 19:53:27,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:53:27,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-31 19:53:27,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:53:27,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-31 19:53:27,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=997, Invalid=3035, Unknown=0, NotChecked=0, Total=4032 [2022-01-31 19:53:27,636 INFO L87 Difference]: Start difference. First operand 483 states and 543 transitions. Second operand has 64 states, 64 states have (on average 2.984375) internal successors, (191), 63 states have internal predecessors, (191), 60 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 59 states have call predecessors, (61), 59 states have call successors, (61) [2022-01-31 19:53:29,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:53:29,980 INFO L93 Difference]: Finished difference Result 513 states and 577 transitions. [2022-01-31 19:53:29,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-31 19:53:29,981 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.984375) internal successors, (191), 63 states have internal predecessors, (191), 60 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 59 states have call predecessors, (61), 59 states have call successors, (61) Word has length 489 [2022-01-31 19:53:29,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:53:29,982 INFO L225 Difference]: With dead ends: 513 [2022-01-31 19:53:29,982 INFO L226 Difference]: Without dead ends: 381 [2022-01-31 19:53:29,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4121 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3506, Invalid=11994, Unknown=0, NotChecked=0, Total=15500 [2022-01-31 19:53:29,983 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 637 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1968 mSolverCounterSat, 720 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 2688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 720 IncrementalHoareTripleChecker+Valid, 1968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 19:53:29,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [641 Valid, 135 Invalid, 2688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [720 Valid, 1968 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 19:53:29,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-01-31 19:53:30,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 368. [2022-01-31 19:53:30,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 273 states have (on average 1.0073260073260073) internal successors, (275), 274 states have internal predecessors, (275), 63 states have call successors, (63), 32 states have call predecessors, (63), 31 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2022-01-31 19:53:30,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 400 transitions. [2022-01-31 19:53:30,288 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 400 transitions. Word has length 489 [2022-01-31 19:53:30,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:53:30,288 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 400 transitions. [2022-01-31 19:53:30,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.984375) internal successors, (191), 63 states have internal predecessors, (191), 60 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 59 states have call predecessors, (61), 59 states have call successors, (61) [2022-01-31 19:53:30,288 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 400 transitions. [2022-01-31 19:53:30,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2022-01-31 19:53:30,290 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:53:30,290 INFO L514 BasicCegarLoop]: trace histogram [32, 32, 32, 30, 30, 30, 30, 30, 29, 29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:53:30,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-01-31 19:53:30,290 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:53:30,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:53:30,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1547300026, now seen corresponding path program 111 times [2022-01-31 19:53:30,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:53:30,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475112055] [2022-01-31 19:53:30,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:53:30,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:53:30,293 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:53:30,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:31,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:53:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:31,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:53:31,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:31,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:53:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:53:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:53:32,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:53:32,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:53:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:53:32,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:53:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:53:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:53:32,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:53:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:53:32,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:53:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:53:32,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:53:32,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:53:32,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:53:32,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:53:32,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:53:32,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:53:32,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:53:32,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:53:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:53:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:53:32,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:53:32,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:53:32,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:53:32,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:53:32,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:53:32,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:53:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:53:32,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:53:32,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:53:32,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:53:32,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:53:32,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:53:32,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:53:32,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:53:32,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:53:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:53:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:53:32,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:53:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:53:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:53:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:53:32,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:53:32,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:53:32,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:53:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:53:32,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:53:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:53:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:53:32,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:53:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:53:32,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:53:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:53:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:53:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:53:32,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 19:53:32,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 19:53:32,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:32,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 90 proven. 90 refuted. 0 times theorem prover too weak. 1804 trivial. 0 not checked. [2022-01-31 19:53:32,095 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:53:32,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475112055] [2022-01-31 19:53:32,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1475112055] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:53:32,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:53:32,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2022-01-31 19:53:32,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824458075] [2022-01-31 19:53:32,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:53:32,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-01-31 19:53:32,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:53:32,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-01-31 19:53:32,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=4797, Unknown=0, NotChecked=0, Total=4970 [2022-01-31 19:53:32,097 INFO L87 Difference]: Start difference. First operand 368 states and 400 transitions. Second operand has 71 states, 70 states have (on average 2.7714285714285714) internal successors, (194), 67 states have internal predecessors, (194), 60 states have call successors, (63), 3 states have call predecessors, (63), 2 states have return successors, (61), 60 states have call predecessors, (61), 59 states have call successors, (61) [2022-01-31 19:53:41,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:53:41,589 INFO L93 Difference]: Finished difference Result 511 states and 577 transitions. [2022-01-31 19:53:41,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-31 19:53:41,590 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 2.7714285714285714) internal successors, (194), 67 states have internal predecessors, (194), 60 states have call successors, (63), 3 states have call predecessors, (63), 2 states have return successors, (61), 60 states have call predecessors, (61), 59 states have call successors, (61) Word has length 489 [2022-01-31 19:53:41,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:53:41,593 INFO L225 Difference]: With dead ends: 511 [2022-01-31 19:53:41,593 INFO L226 Difference]: Without dead ends: 509 [2022-01-31 19:53:41,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3608 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=772, Invalid=18688, Unknown=0, NotChecked=0, Total=19460 [2022-01-31 19:53:41,594 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 562 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 21560 mSolverCounterSat, 629 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 22189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 629 IncrementalHoareTripleChecker+Valid, 21560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-01-31 19:53:41,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [564 Valid, 298 Invalid, 22189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [629 Valid, 21560 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-01-31 19:53:41,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-01-31 19:53:42,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 491. [2022-01-31 19:53:42,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 365 states have (on average 1.0082191780821919) internal successors, (368), 367 states have internal predecessors, (368), 93 states have call successors, (93), 33 states have call predecessors, (93), 32 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2022-01-31 19:53:42,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 553 transitions. [2022-01-31 19:53:42,122 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 553 transitions. Word has length 489 [2022-01-31 19:53:42,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:53:42,122 INFO L470 AbstractCegarLoop]: Abstraction has 491 states and 553 transitions. [2022-01-31 19:53:42,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 70 states have (on average 2.7714285714285714) internal successors, (194), 67 states have internal predecessors, (194), 60 states have call successors, (63), 3 states have call predecessors, (63), 2 states have return successors, (61), 60 states have call predecessors, (61), 59 states have call successors, (61) [2022-01-31 19:53:42,122 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 553 transitions. [2022-01-31 19:53:42,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2022-01-31 19:53:42,124 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:53:42,124 INFO L514 BasicCegarLoop]: trace histogram [32, 32, 32, 30, 30, 30, 30, 30, 30, 30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:53:42,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-01-31 19:53:42,124 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:53:42,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:53:42,124 INFO L85 PathProgramCache]: Analyzing trace with hash -346272120, now seen corresponding path program 112 times [2022-01-31 19:53:42,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:53:42,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041731249] [2022-01-31 19:53:42,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:53:42,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:53:42,127 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:53:42,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:53:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:53:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:53:43,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:53:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:53:43,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:53:43,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:53:43,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:53:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:53:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:53:43,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:53:43,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:53:43,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:53:43,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:53:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:53:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:53:43,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:53:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:53:43,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:53:43,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:53:43,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:53:43,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:53:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:53:43,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:53:43,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:53:43,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:53:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:53:43,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:53:43,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:53:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:53:43,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:53:43,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:53:43,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:53:43,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:53:43,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:53:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:53:43,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:53:43,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:53:43,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:53:43,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:53:43,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:53:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:53:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:53:43,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:53:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:53:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:53:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:53:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:53:43,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:53:43,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:53:43,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:53:43,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:53:43,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:53:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:53:43,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:53:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:53:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:53:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:53:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:53:43,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 19:53:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 19:53:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 19:53:43,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:43,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 93 proven. 87 refuted. 0 times theorem prover too weak. 1804 trivial. 0 not checked. [2022-01-31 19:53:43,959 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:53:43,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041731249] [2022-01-31 19:53:43,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2041731249] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:53:43,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:53:43,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2022-01-31 19:53:43,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487478825] [2022-01-31 19:53:43,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:53:43,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-01-31 19:53:43,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:53:43,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-01-31 19:53:43,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=4938, Unknown=0, NotChecked=0, Total=5112 [2022-01-31 19:53:43,960 INFO L87 Difference]: Start difference. First operand 491 states and 553 transitions. Second operand has 72 states, 71 states have (on average 2.7746478873239435) internal successors, (197), 68 states have internal predecessors, (197), 61 states have call successors, (64), 3 states have call predecessors, (64), 2 states have return successors, (62), 61 states have call predecessors, (62), 60 states have call successors, (62) [2022-01-31 19:53:53,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:53:53,806 INFO L93 Difference]: Finished difference Result 519 states and 585 transitions. [2022-01-31 19:53:53,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-31 19:53:53,807 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 2.7746478873239435) internal successors, (197), 68 states have internal predecessors, (197), 61 states have call successors, (64), 3 states have call predecessors, (64), 2 states have return successors, (62), 61 states have call predecessors, (62), 60 states have call successors, (62) Word has length 497 [2022-01-31 19:53:53,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:53:53,808 INFO L225 Difference]: With dead ends: 519 [2022-01-31 19:53:53,808 INFO L226 Difference]: Without dead ends: 517 [2022-01-31 19:53:53,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3715 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=725, Invalid=19297, Unknown=0, NotChecked=0, Total=20022 [2022-01-31 19:53:53,809 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 515 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 22922 mSolverCounterSat, 579 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 23501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 579 IncrementalHoareTripleChecker+Valid, 22922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-01-31 19:53:53,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [517 Valid, 369 Invalid, 23501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [579 Valid, 22922 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-01-31 19:53:53,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2022-01-31 19:53:54,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 499. [2022-01-31 19:53:54,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 371 states have (on average 1.0080862533692723) internal successors, (374), 373 states have internal predecessors, (374), 94 states have call successors, (94), 34 states have call predecessors, (94), 33 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2022-01-31 19:53:54,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 561 transitions. [2022-01-31 19:53:54,337 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 561 transitions. Word has length 497 [2022-01-31 19:53:54,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:53:54,337 INFO L470 AbstractCegarLoop]: Abstraction has 499 states and 561 transitions. [2022-01-31 19:53:54,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 2.7746478873239435) internal successors, (197), 68 states have internal predecessors, (197), 61 states have call successors, (64), 3 states have call predecessors, (64), 2 states have return successors, (62), 61 states have call predecessors, (62), 60 states have call successors, (62) [2022-01-31 19:53:54,338 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 561 transitions. [2022-01-31 19:53:54,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2022-01-31 19:53:54,339 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:53:54,339 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 33, 31, 31, 31, 31, 31, 29, 29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:53:54,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-01-31 19:53:54,339 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:53:54,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:53:54,340 INFO L85 PathProgramCache]: Analyzing trace with hash -819539191, now seen corresponding path program 113 times [2022-01-31 19:53:54,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:53:54,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140851006] [2022-01-31 19:53:54,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:53:54,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:53:54,342 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:53:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:53:55,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:53:55,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:53:55,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:53:55,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:53:55,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:53:55,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:53:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:53:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:53:55,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:53:55,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:53:55,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:53:55,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:53:55,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:53:55,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:53:55,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:53:55,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:53:55,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:53:55,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:53:55,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:53:55,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:53:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:53:55,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:53:55,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:53:55,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:53:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:53:55,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:53:55,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:53:55,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:53:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:53:55,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:53:55,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:53:55,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:53:55,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 19:53:55,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:53:55,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:53:55,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:53:55,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:53:55,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:53:55,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:53:55,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:53:55,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:53:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:53:55,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:53:55,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:53:55,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:53:55,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:53:55,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:53:55,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:53:55,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:53:55,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:53:55,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:53:55,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:53:55,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:53:55,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:53:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:53:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:53:55,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:53:55,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:53:55,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 19:53:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:56,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 19:53:56,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:56,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 19:53:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:56,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 90 proven. 96 refuted. 0 times theorem prover too weak. 1926 trivial. 0 not checked. [2022-01-31 19:53:56,002 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:53:56,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140851006] [2022-01-31 19:53:56,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2140851006] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:53:56,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:53:56,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2022-01-31 19:53:56,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334125008] [2022-01-31 19:53:56,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:53:56,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-01-31 19:53:56,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:53:56,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-01-31 19:53:56,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=4935, Unknown=0, NotChecked=0, Total=5112 [2022-01-31 19:53:56,004 INFO L87 Difference]: Start difference. First operand 499 states and 561 transitions. Second operand has 72 states, 71 states have (on average 2.7746478873239435) internal successors, (197), 68 states have internal predecessors, (197), 61 states have call successors, (64), 3 states have call predecessors, (64), 2 states have return successors, (62), 61 states have call predecessors, (62), 60 states have call successors, (62) [2022-01-31 19:54:04,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:54:04,104 INFO L93 Difference]: Finished difference Result 511 states and 573 transitions. [2022-01-31 19:54:04,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-31 19:54:04,104 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 2.7746478873239435) internal successors, (197), 68 states have internal predecessors, (197), 61 states have call successors, (64), 3 states have call predecessors, (64), 2 states have return successors, (62), 61 states have call predecessors, (62), 60 states have call successors, (62) Word has length 497 [2022-01-31 19:54:04,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:54:04,106 INFO L225 Difference]: With dead ends: 511 [2022-01-31 19:54:04,106 INFO L226 Difference]: Without dead ends: 509 [2022-01-31 19:54:04,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3634 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=711, Invalid=18749, Unknown=0, NotChecked=0, Total=19460 [2022-01-31 19:54:04,107 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 434 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 18799 mSolverCounterSat, 483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 19282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 483 IncrementalHoareTripleChecker+Valid, 18799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:54:04,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 292 Invalid, 19282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [483 Valid, 18799 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-01-31 19:54:04,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-01-31 19:54:04,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 499. [2022-01-31 19:54:04,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 371 states have (on average 1.0080862533692723) internal successors, (374), 373 states have internal predecessors, (374), 94 states have call successors, (94), 34 states have call predecessors, (94), 33 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2022-01-31 19:54:04,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 561 transitions. [2022-01-31 19:54:04,621 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 561 transitions. Word has length 497 [2022-01-31 19:54:04,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:54:04,621 INFO L470 AbstractCegarLoop]: Abstraction has 499 states and 561 transitions. [2022-01-31 19:54:04,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 2.7746478873239435) internal successors, (197), 68 states have internal predecessors, (197), 61 states have call successors, (64), 3 states have call predecessors, (64), 2 states have return successors, (62), 61 states have call predecessors, (62), 60 states have call successors, (62) [2022-01-31 19:54:04,621 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 561 transitions. [2022-01-31 19:54:04,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2022-01-31 19:54:04,623 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:54:04,623 INFO L514 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:54:04,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-01-31 19:54:04,623 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:54:04,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:54:04,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1973355094, now seen corresponding path program 114 times [2022-01-31 19:54:04,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:54:04,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311339909] [2022-01-31 19:54:04,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:54:04,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:54:04,626 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:54:04,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:54:05,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:54:05,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:54:05,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:54:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:54:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:54:05,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:54:05,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:54:05,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:54:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:54:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:54:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:54:05,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:54:05,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:54:05,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:54:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:54:05,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:54:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:54:05,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:54:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:54:05,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:54:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:54:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:54:05,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:54:05,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:54:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:54:05,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:54:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:54:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:54:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:54:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:54:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:54:05,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:54:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:54:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:54:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:54:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:54:05,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:54:05,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:54:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:54:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:54:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:54:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:54:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:54:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:54:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:54:05,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:54:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:54:05,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:54:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:54:05,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:54:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:54:05,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:54:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:54:05,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:54:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:54:05,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:54:05,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:54:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:54:05,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 19:54:05,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 19:54:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 19:54:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 19:54:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-01-31 19:54:05,695 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:54:05,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311339909] [2022-01-31 19:54:05,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1311339909] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:54:05,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:54:05,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2022-01-31 19:54:05,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143371563] [2022-01-31 19:54:05,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:54:05,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-01-31 19:54:05,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:54:05,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-01-31 19:54:05,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1061, Invalid=3229, Unknown=0, NotChecked=0, Total=4290 [2022-01-31 19:54:05,697 INFO L87 Difference]: Start difference. First operand 499 states and 561 transitions. Second operand has 66 states, 66 states have (on average 2.984848484848485) internal successors, (197), 65 states have internal predecessors, (197), 62 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (63), 61 states have call predecessors, (63), 61 states have call successors, (63) [2022-01-31 19:54:08,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:54:08,057 INFO L93 Difference]: Finished difference Result 529 states and 595 transitions. [2022-01-31 19:54:08,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-31 19:54:08,057 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.984848484848485) internal successors, (197), 65 states have internal predecessors, (197), 62 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (63), 61 states have call predecessors, (63), 61 states have call successors, (63) Word has length 505 [2022-01-31 19:54:08,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:54:08,058 INFO L225 Difference]: With dead ends: 529 [2022-01-31 19:54:08,058 INFO L226 Difference]: Without dead ends: 393 [2022-01-31 19:54:08,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4398 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3731, Invalid=12781, Unknown=0, NotChecked=0, Total=16512 [2022-01-31 19:54:08,060 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 635 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 2055 mSolverCounterSat, 721 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 2776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 721 IncrementalHoareTripleChecker+Valid, 2055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 19:54:08,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [639 Valid, 137 Invalid, 2776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [721 Valid, 2055 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 19:54:08,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-01-31 19:54:08,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 380. [2022-01-31 19:54:08,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 282 states have (on average 1.0070921985815602) internal successors, (284), 283 states have internal predecessors, (284), 65 states have call successors, (65), 33 states have call predecessors, (65), 32 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2022-01-31 19:54:08,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 413 transitions. [2022-01-31 19:54:08,378 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 413 transitions. Word has length 505 [2022-01-31 19:54:08,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:54:08,378 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 413 transitions. [2022-01-31 19:54:08,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.984848484848485) internal successors, (197), 65 states have internal predecessors, (197), 62 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (63), 61 states have call predecessors, (63), 61 states have call successors, (63) [2022-01-31 19:54:08,378 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 413 transitions. [2022-01-31 19:54:08,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2022-01-31 19:54:08,380 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:54:08,380 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 33, 31, 31, 31, 31, 31, 30, 30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:54:08,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-01-31 19:54:08,380 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:54:08,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:54:08,380 INFO L85 PathProgramCache]: Analyzing trace with hash -283019817, now seen corresponding path program 115 times [2022-01-31 19:54:08,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:54:08,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097375849] [2022-01-31 19:54:08,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:54:08,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:54:08,383 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:54:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:54:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:54:10,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:54:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:54:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:54:10,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:54:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:54:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:54:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:54:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:54:10,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:54:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:54:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:54:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:54:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:54:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:54:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:54:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:54:10,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:54:10,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:54:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:54:10,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:54:10,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:54:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:54:10,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:54:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:54:10,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:54:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:54:10,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:54:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:54:10,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:54:10,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:54:10,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:54:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 19:54:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:54:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:54:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:54:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:54:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:54:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:54:10,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:54:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:54:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:54:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:54:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:54:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:54:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:54:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:54:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:54:10,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:54:10,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:54:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:54:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:54:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:54:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:54:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:54:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:54:10,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:54:10,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:54:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 19:54:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 19:54:10,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 19:54:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 19:54:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 93 proven. 93 refuted. 0 times theorem prover too weak. 1926 trivial. 0 not checked. [2022-01-31 19:54:10,441 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:54:10,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097375849] [2022-01-31 19:54:10,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2097375849] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:54:10,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:54:10,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74 [2022-01-31 19:54:10,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088393806] [2022-01-31 19:54:10,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:54:10,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-01-31 19:54:10,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:54:10,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-01-31 19:54:10,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=5221, Unknown=0, NotChecked=0, Total=5402 [2022-01-31 19:54:10,444 INFO L87 Difference]: Start difference. First operand 380 states and 413 transitions. Second operand has 74 states, 72 states have (on average 2.7777777777777777) internal successors, (200), 70 states have internal predecessors, (200), 62 states have call successors, (65), 3 states have call predecessors, (65), 2 states have return successors, (63), 62 states have call predecessors, (63), 61 states have call successors, (63) [2022-01-31 19:54:19,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:54:19,206 INFO L93 Difference]: Finished difference Result 527 states and 595 transitions. [2022-01-31 19:54:19,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-31 19:54:19,206 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 72 states have (on average 2.7777777777777777) internal successors, (200), 70 states have internal predecessors, (200), 62 states have call successors, (65), 3 states have call predecessors, (65), 2 states have return successors, (63), 62 states have call predecessors, (63), 61 states have call successors, (63) Word has length 505 [2022-01-31 19:54:19,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:54:19,207 INFO L225 Difference]: With dead ends: 527 [2022-01-31 19:54:19,207 INFO L226 Difference]: Without dead ends: 525 [2022-01-31 19:54:19,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3890 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=803, Invalid=20077, Unknown=0, NotChecked=0, Total=20880 [2022-01-31 19:54:19,209 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 625 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 22765 mSolverCounterSat, 698 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 23463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 698 IncrementalHoareTripleChecker+Valid, 22765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-01-31 19:54:19,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [627 Valid, 318 Invalid, 23463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [698 Valid, 22765 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-01-31 19:54:19,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-01-31 19:54:19,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 507. [2022-01-31 19:54:19,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 377 states have (on average 1.0079575596816976) internal successors, (380), 379 states have internal predecessors, (380), 96 states have call successors, (96), 34 states have call predecessors, (96), 33 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2022-01-31 19:54:19,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 571 transitions. [2022-01-31 19:54:19,776 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 571 transitions. Word has length 505 [2022-01-31 19:54:19,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:54:19,778 INFO L470 AbstractCegarLoop]: Abstraction has 507 states and 571 transitions. [2022-01-31 19:54:19,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 72 states have (on average 2.7777777777777777) internal successors, (200), 70 states have internal predecessors, (200), 62 states have call successors, (65), 3 states have call predecessors, (65), 2 states have return successors, (63), 62 states have call predecessors, (63), 61 states have call successors, (63) [2022-01-31 19:54:19,779 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 571 transitions. [2022-01-31 19:54:19,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2022-01-31 19:54:19,780 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:54:19,780 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 33, 31, 31, 31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:54:19,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-01-31 19:54:19,781 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:54:19,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:54:19,781 INFO L85 PathProgramCache]: Analyzing trace with hash 309029541, now seen corresponding path program 116 times [2022-01-31 19:54:19,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:54:19,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1256395711] [2022-01-31 19:54:19,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:54:19,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:54:19,784 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:54:19,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:54:21,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:54:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:54:21,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:54:21,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:54:21,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:54:21,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:54:21,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:54:21,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:54:21,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:54:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:54:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:54:21,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:54:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:54:21,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:54:21,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:54:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:54:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:54:21,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:54:21,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:54:21,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:54:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:54:21,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:54:21,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:54:21,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:54:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:54:21,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:54:21,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:54:21,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:54:21,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:54:21,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:54:21,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:54:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:54:21,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 19:54:21,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:54:21,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:54:21,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:54:21,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:54:21,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:54:21,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:54:21,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:54:21,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:54:21,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:54:21,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:54:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:54:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:54:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:54:21,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:54:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:54:21,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:54:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:54:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:54:21,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:54:21,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:54:21,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:54:21,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:54:21,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:54:21,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:54:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:54:21,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 19:54:21,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 19:54:21,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 19:54:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 19:54:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 19:54:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:21,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 96 proven. 90 refuted. 0 times theorem prover too weak. 1926 trivial. 0 not checked. [2022-01-31 19:54:21,606 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:54:21,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1256395711] [2022-01-31 19:54:21,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1256395711] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:54:21,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:54:21,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75 [2022-01-31 19:54:21,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501773641] [2022-01-31 19:54:21,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:54:21,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-01-31 19:54:21,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:54:21,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-01-31 19:54:21,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=5368, Unknown=0, NotChecked=0, Total=5550 [2022-01-31 19:54:21,607 INFO L87 Difference]: Start difference. First operand 507 states and 571 transitions. Second operand has 75 states, 73 states have (on average 2.780821917808219) internal successors, (203), 71 states have internal predecessors, (203), 63 states have call successors, (66), 3 states have call predecessors, (66), 2 states have return successors, (64), 63 states have call predecessors, (64), 62 states have call successors, (64) [2022-01-31 19:54:32,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:54:32,418 INFO L93 Difference]: Finished difference Result 535 states and 603 transitions. [2022-01-31 19:54:32,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-01-31 19:54:32,418 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 73 states have (on average 2.780821917808219) internal successors, (203), 71 states have internal predecessors, (203), 63 states have call successors, (66), 3 states have call predecessors, (66), 2 states have return successors, (64), 63 states have call predecessors, (64), 62 states have call successors, (64) Word has length 513 [2022-01-31 19:54:32,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:54:32,419 INFO L225 Difference]: With dead ends: 535 [2022-01-31 19:54:32,419 INFO L226 Difference]: Without dead ends: 533 [2022-01-31 19:54:32,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4001 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=754, Invalid=20708, Unknown=0, NotChecked=0, Total=21462 [2022-01-31 19:54:32,420 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 566 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 24063 mSolverCounterSat, 635 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 24698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 635 IncrementalHoareTripleChecker+Valid, 24063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-01-31 19:54:32,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [568 Valid, 336 Invalid, 24698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [635 Valid, 24063 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-01-31 19:54:32,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2022-01-31 19:54:33,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 515. [2022-01-31 19:54:33,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 383 states have (on average 1.0078328981723237) internal successors, (386), 385 states have internal predecessors, (386), 97 states have call successors, (97), 35 states have call predecessors, (97), 34 states have return successors, (96), 94 states have call predecessors, (96), 96 states have call successors, (96) [2022-01-31 19:54:33,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 579 transitions. [2022-01-31 19:54:33,008 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 579 transitions. Word has length 513 [2022-01-31 19:54:33,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:54:33,008 INFO L470 AbstractCegarLoop]: Abstraction has 515 states and 579 transitions. [2022-01-31 19:54:33,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 73 states have (on average 2.780821917808219) internal successors, (203), 71 states have internal predecessors, (203), 63 states have call successors, (66), 3 states have call predecessors, (66), 2 states have return successors, (64), 63 states have call predecessors, (64), 62 states have call successors, (64) [2022-01-31 19:54:33,008 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 579 transitions. [2022-01-31 19:54:33,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2022-01-31 19:54:33,010 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:54:33,010 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 34, 32, 32, 32, 32, 32, 30, 30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:54:33,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-01-31 19:54:33,010 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:54:33,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:54:33,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1947345370, now seen corresponding path program 117 times [2022-01-31 19:54:33,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:54:33,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713042407] [2022-01-31 19:54:33,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:54:33,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:54:33,014 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:54:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:34,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:54:34,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:34,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:54:34,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:34,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:54:34,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:34,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:54:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:34,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:54:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:34,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:54:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:34,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:54:34,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:34,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:54:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:34,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:54:34,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:34,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:54:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:34,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:54:34,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:34,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:54:34,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:34,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:54:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:34,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:54:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:34,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:54:34,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:34,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:54:34,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:34,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:54:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:34,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:54:34,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:34,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:54:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:34,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:54:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:34,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:54:34,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:34,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:54:34,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:34,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:54:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:34,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:54:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:34,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:54:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:34,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:54:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:34,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:54:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:34,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:54:34,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:34,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:54:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:34,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:54:34,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:34,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:54:34,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:34,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:54:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:34,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:54:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:34,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 19:54:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:34,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 19:54:34,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:34,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:54:34,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:35,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:54:35,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:35,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:54:35,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:35,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:54:35,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:35,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:54:35,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:35,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:54:35,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:35,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:54:35,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:35,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:54:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:35,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:54:35,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:35,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:54:35,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:35,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:54:35,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:35,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:54:35,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:35,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:54:35,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:35,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:54:35,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:35,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:54:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:35,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:54:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:35,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:54:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:35,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:54:35,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:35,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:54:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:35,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:54:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:35,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:54:35,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:35,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:54:35,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:35,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:54:35,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:35,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:54:35,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:35,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 19:54:35,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:35,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 19:54:35,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:35,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 19:54:35,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:35,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 19:54:35,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:35,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 19:54:35,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:35,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 93 proven. 99 refuted. 0 times theorem prover too weak. 2052 trivial. 0 not checked. [2022-01-31 19:54:35,035 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:54:35,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713042407] [2022-01-31 19:54:35,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [713042407] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:54:35,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:54:35,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74 [2022-01-31 19:54:35,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856242213] [2022-01-31 19:54:35,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:54:35,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-01-31 19:54:35,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:54:35,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-01-31 19:54:35,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=5220, Unknown=0, NotChecked=0, Total=5402 [2022-01-31 19:54:35,037 INFO L87 Difference]: Start difference. First operand 515 states and 579 transitions. Second operand has 74 states, 73 states have (on average 2.780821917808219) internal successors, (203), 70 states have internal predecessors, (203), 63 states have call successors, (66), 3 states have call predecessors, (66), 2 states have return successors, (64), 63 states have call predecessors, (64), 62 states have call successors, (64) [2022-01-31 19:54:42,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:54:42,991 INFO L93 Difference]: Finished difference Result 527 states and 591 transitions. [2022-01-31 19:54:42,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-31 19:54:42,992 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 73 states have (on average 2.780821917808219) internal successors, (203), 70 states have internal predecessors, (203), 63 states have call successors, (66), 3 states have call predecessors, (66), 2 states have return successors, (64), 63 states have call predecessors, (64), 62 states have call successors, (64) Word has length 513 [2022-01-31 19:54:42,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:54:42,993 INFO L225 Difference]: With dead ends: 527 [2022-01-31 19:54:42,993 INFO L226 Difference]: Without dead ends: 525 [2022-01-31 19:54:42,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3847 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=732, Invalid=19860, Unknown=0, NotChecked=0, Total=20592 [2022-01-31 19:54:42,995 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 406 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 21615 mSolverCounterSat, 459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 22074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 459 IncrementalHoareTripleChecker+Valid, 21615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:54:42,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 404 Invalid, 22074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [459 Valid, 21615 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-01-31 19:54:42,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-01-31 19:54:43,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 515. [2022-01-31 19:54:43,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 383 states have (on average 1.0078328981723237) internal successors, (386), 385 states have internal predecessors, (386), 97 states have call successors, (97), 35 states have call predecessors, (97), 34 states have return successors, (96), 94 states have call predecessors, (96), 96 states have call successors, (96) [2022-01-31 19:54:43,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 579 transitions. [2022-01-31 19:54:43,556 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 579 transitions. Word has length 513 [2022-01-31 19:54:43,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:54:43,556 INFO L470 AbstractCegarLoop]: Abstraction has 515 states and 579 transitions. [2022-01-31 19:54:43,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 73 states have (on average 2.780821917808219) internal successors, (203), 70 states have internal predecessors, (203), 63 states have call successors, (66), 3 states have call predecessors, (66), 2 states have return successors, (64), 63 states have call predecessors, (64), 62 states have call successors, (64) [2022-01-31 19:54:43,557 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 579 transitions. [2022-01-31 19:54:43,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2022-01-31 19:54:43,559 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:54:43,559 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:54:43,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-01-31 19:54:43,560 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:54:43,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:54:43,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1704112499, now seen corresponding path program 118 times [2022-01-31 19:54:43,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:54:43,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330004599] [2022-01-31 19:54:43,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:54:43,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:54:43,564 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:54:43,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:54:44,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:54:44,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:54:44,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:54:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:54:44,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:54:44,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:54:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:54:44,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:54:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:54:44,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:54:44,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:54:44,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:54:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:54:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:54:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:54:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:54:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:54:44,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:54:44,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:54:44,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:54:44,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:54:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:54:44,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:54:44,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:54:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:54:44,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:54:44,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:54:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:54:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:54:44,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:54:44,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:54:44,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:54:44,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 19:54:44,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:54:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:54:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:54:44,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:54:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:54:44,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:54:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:54:44,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:54:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:54:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:54:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:54:44,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:54:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:54:44,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:54:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:54:44,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:54:44,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:54:44,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:54:44,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:54:44,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:54:44,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:54:44,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:54:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:54:44,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:54:44,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:54:44,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 19:54:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 19:54:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 19:54:44,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 19:54:44,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 19:54:44,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-01-31 19:54:44,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2022-01-31 19:54:44,827 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:54:44,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330004599] [2022-01-31 19:54:44,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1330004599] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:54:44,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:54:44,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2022-01-31 19:54:44,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341140806] [2022-01-31 19:54:44,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:54:44,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-01-31 19:54:44,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:54:44,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-01-31 19:54:44,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1127, Invalid=3429, Unknown=0, NotChecked=0, Total=4556 [2022-01-31 19:54:44,828 INFO L87 Difference]: Start difference. First operand 515 states and 579 transitions. Second operand has 68 states, 68 states have (on average 2.985294117647059) internal successors, (203), 67 states have internal predecessors, (203), 64 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (65), 63 states have call predecessors, (65), 63 states have call successors, (65) [2022-01-31 19:54:47,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:54:47,026 INFO L93 Difference]: Finished difference Result 545 states and 613 transitions. [2022-01-31 19:54:47,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-31 19:54:47,026 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.985294117647059) internal successors, (203), 67 states have internal predecessors, (203), 64 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (65), 63 states have call predecessors, (65), 63 states have call successors, (65) Word has length 521 [2022-01-31 19:54:47,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:54:47,027 INFO L225 Difference]: With dead ends: 545 [2022-01-31 19:54:47,027 INFO L226 Difference]: Without dead ends: 405 [2022-01-31 19:54:47,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4684 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3963, Invalid=13593, Unknown=0, NotChecked=0, Total=17556 [2022-01-31 19:54:47,028 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 717 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 2110 mSolverCounterSat, 805 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 2915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 805 IncrementalHoareTripleChecker+Valid, 2110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 19:54:47,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [721 Valid, 129 Invalid, 2915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [805 Valid, 2110 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 19:54:47,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-01-31 19:54:47,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 392. [2022-01-31 19:54:47,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 291 states have (on average 1.006872852233677) internal successors, (293), 292 states have internal predecessors, (293), 67 states have call successors, (67), 34 states have call predecessors, (67), 33 states have return successors, (66), 65 states have call predecessors, (66), 66 states have call successors, (66) [2022-01-31 19:54:47,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 426 transitions. [2022-01-31 19:54:47,352 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 426 transitions. Word has length 521 [2022-01-31 19:54:47,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:54:47,353 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 426 transitions. [2022-01-31 19:54:47,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.985294117647059) internal successors, (203), 67 states have internal predecessors, (203), 64 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (65), 63 states have call predecessors, (65), 63 states have call successors, (65) [2022-01-31 19:54:47,353 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 426 transitions. [2022-01-31 19:54:47,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2022-01-31 19:54:47,354 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:54:47,355 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 34, 32, 32, 32, 32, 32, 31, 31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:54:47,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-01-31 19:54:47,355 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:54:47,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:54:47,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1318185996, now seen corresponding path program 119 times [2022-01-31 19:54:47,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:54:47,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142369369] [2022-01-31 19:54:47,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:54:47,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:54:47,358 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:54:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:54:49,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:54:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:54:49,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:54:49,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:54:49,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:54:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:54:49,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:54:49,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:54:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:54:49,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:54:49,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:54:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:54:49,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:54:49,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:54:49,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:54:49,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:54:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:54:49,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:54:49,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:54:49,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:54:49,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:54:49,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:54:49,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:54:49,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:54:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:54:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:54:49,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:54:49,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:54:49,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:54:49,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:54:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:54:49,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:54:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 19:54:49,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 19:54:49,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:54:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:54:49,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:54:49,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:54:49,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:54:49,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:54:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:54:49,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:54:49,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:54:49,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:54:49,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:54:49,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:54:49,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:54:49,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:54:49,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:54:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:54:49,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:54:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:54:49,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:54:49,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:54:49,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:54:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:54:49,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:54:49,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:54:49,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 19:54:49,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 19:54:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 19:54:49,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 19:54:49,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 19:54:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-01-31 19:54:49,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:49,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 96 proven. 96 refuted. 0 times theorem prover too weak. 2052 trivial. 0 not checked. [2022-01-31 19:54:49,410 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:54:49,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142369369] [2022-01-31 19:54:49,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1142369369] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:54:49,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:54:49,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75 [2022-01-31 19:54:49,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968469719] [2022-01-31 19:54:49,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:54:49,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-01-31 19:54:49,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:54:49,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-01-31 19:54:49,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=5367, Unknown=0, NotChecked=0, Total=5550 [2022-01-31 19:54:49,411 INFO L87 Difference]: Start difference. First operand 392 states and 426 transitions. Second operand has 75 states, 74 states have (on average 2.7837837837837838) internal successors, (206), 71 states have internal predecessors, (206), 64 states have call successors, (67), 3 states have call predecessors, (67), 2 states have return successors, (65), 64 states have call predecessors, (65), 63 states have call successors, (65) [2022-01-31 19:55:00,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:55:00,793 INFO L93 Difference]: Finished difference Result 543 states and 613 transitions. [2022-01-31 19:55:00,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-31 19:55:00,793 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 74 states have (on average 2.7837837837837838) internal successors, (206), 71 states have internal predecessors, (206), 64 states have call successors, (67), 3 states have call predecessors, (67), 2 states have return successors, (65), 64 states have call predecessors, (65), 63 states have call successors, (65) Word has length 521 [2022-01-31 19:55:00,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:55:00,795 INFO L225 Difference]: With dead ends: 543 [2022-01-31 19:55:00,795 INFO L226 Difference]: Without dead ends: 541 [2022-01-31 19:55:00,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4038 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=818, Invalid=20938, Unknown=0, NotChecked=0, Total=21756 [2022-01-31 19:55:00,796 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 572 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 25671 mSolverCounterSat, 647 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 26318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 25671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-01-31 19:55:00,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [574 Valid, 418 Invalid, 26318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 25671 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-01-31 19:55:00,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-01-31 19:55:01,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 523. [2022-01-31 19:55:01,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 389 states have (on average 1.0077120822622108) internal successors, (392), 391 states have internal predecessors, (392), 99 states have call successors, (99), 35 states have call predecessors, (99), 34 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2022-01-31 19:55:01,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 589 transitions. [2022-01-31 19:55:01,380 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 589 transitions. Word has length 521 [2022-01-31 19:55:01,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:55:01,380 INFO L470 AbstractCegarLoop]: Abstraction has 523 states and 589 transitions. [2022-01-31 19:55:01,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 74 states have (on average 2.7837837837837838) internal successors, (206), 71 states have internal predecessors, (206), 64 states have call successors, (67), 3 states have call predecessors, (67), 2 states have return successors, (65), 64 states have call predecessors, (65), 63 states have call successors, (65) [2022-01-31 19:55:01,380 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 589 transitions. [2022-01-31 19:55:01,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2022-01-31 19:55:01,382 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:55:01,382 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 34, 32, 32, 32, 32, 32, 32, 32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:55:01,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-01-31 19:55:01,382 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:55:01,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:55:01,383 INFO L85 PathProgramCache]: Analyzing trace with hash -788882494, now seen corresponding path program 120 times [2022-01-31 19:55:01,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:55:01,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569596625] [2022-01-31 19:55:01,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:55:01,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:55:01,386 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:55:01,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:55:03,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:55:03,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:55:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:55:03,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:55:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:55:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:55:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:55:03,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:55:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:55:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:55:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:55:03,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:55:03,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:55:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:55:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:55:03,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:55:03,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:55:03,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:55:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:55:03,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:55:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:55:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:55:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:55:03,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:55:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:55:03,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:55:03,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:55:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:55:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:55:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:55:03,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:55:03,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:55:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 19:55:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 19:55:03,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:55:03,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:55:03,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:55:03,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:55:03,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:55:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:55:03,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:55:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:55:03,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:55:03,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:55:03,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:55:03,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:55:03,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:55:03,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:55:03,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:55:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:55:03,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:55:03,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:55:03,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:55:03,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:55:03,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:55:03,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:55:03,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:55:03,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:55:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 19:55:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 19:55:03,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 19:55:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 19:55:03,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 19:55:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-01-31 19:55:03,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-01-31 19:55:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:03,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 99 proven. 93 refuted. 0 times theorem prover too weak. 2052 trivial. 0 not checked. [2022-01-31 19:55:03,231 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:55:03,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569596625] [2022-01-31 19:55:03,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [569596625] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:55:03,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:55:03,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77 [2022-01-31 19:55:03,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614708953] [2022-01-31 19:55:03,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:55:03,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-01-31 19:55:03,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:55:03,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-01-31 19:55:03,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=5665, Unknown=0, NotChecked=0, Total=5852 [2022-01-31 19:55:03,233 INFO L87 Difference]: Start difference. First operand 523 states and 589 transitions. Second operand has 77 states, 75 states have (on average 2.7866666666666666) internal successors, (209), 73 states have internal predecessors, (209), 65 states have call successors, (68), 3 states have call predecessors, (68), 2 states have return successors, (66), 65 states have call predecessors, (66), 64 states have call successors, (66) [2022-01-31 19:55:14,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:55:14,151 INFO L93 Difference]: Finished difference Result 551 states and 621 transitions. [2022-01-31 19:55:14,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-31 19:55:14,152 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 75 states have (on average 2.7866666666666666) internal successors, (209), 73 states have internal predecessors, (209), 65 states have call successors, (68), 3 states have call predecessors, (68), 2 states have return successors, (66), 65 states have call predecessors, (66), 64 states have call successors, (66) Word has length 529 [2022-01-31 19:55:14,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:55:14,153 INFO L225 Difference]: With dead ends: 551 [2022-01-31 19:55:14,153 INFO L226 Difference]: Without dead ends: 549 [2022-01-31 19:55:14,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4224 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=775, Invalid=21875, Unknown=0, NotChecked=0, Total=22650 [2022-01-31 19:55:14,154 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 525 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 26970 mSolverCounterSat, 596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 27566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 596 IncrementalHoareTripleChecker+Valid, 26970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-01-31 19:55:14,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [527 Valid, 431 Invalid, 27566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [596 Valid, 26970 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-01-31 19:55:14,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-01-31 19:55:14,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 531. [2022-01-31 19:55:14,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 395 states have (on average 1.0075949367088608) internal successors, (398), 397 states have internal predecessors, (398), 100 states have call successors, (100), 36 states have call predecessors, (100), 35 states have return successors, (99), 97 states have call predecessors, (99), 99 states have call successors, (99) [2022-01-31 19:55:14,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 597 transitions. [2022-01-31 19:55:14,744 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 597 transitions. Word has length 529 [2022-01-31 19:55:14,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:55:14,744 INFO L470 AbstractCegarLoop]: Abstraction has 531 states and 597 transitions. [2022-01-31 19:55:14,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 75 states have (on average 2.7866666666666666) internal successors, (209), 73 states have internal predecessors, (209), 65 states have call successors, (68), 3 states have call predecessors, (68), 2 states have return successors, (66), 65 states have call predecessors, (66), 64 states have call successors, (66) [2022-01-31 19:55:14,745 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 597 transitions. [2022-01-31 19:55:14,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2022-01-31 19:55:14,747 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:55:14,747 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 35, 33, 33, 33, 33, 33, 31, 31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:55:14,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2022-01-31 19:55:14,747 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:55:14,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:55:14,748 INFO L85 PathProgramCache]: Analyzing trace with hash 483786307, now seen corresponding path program 121 times [2022-01-31 19:55:14,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:55:14,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596362830] [2022-01-31 19:55:14,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:55:14,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:55:14,751 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:55:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:55:16,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:55:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:55:16,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:55:16,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:55:16,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:55:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:55:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:55:16,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:55:16,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:55:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:55:16,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:55:16,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:55:16,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:55:16,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:55:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:55:16,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:55:16,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:55:16,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:55:16,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:55:16,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:55:16,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:55:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:55:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:55:16,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:55:16,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:55:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:55:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:55:16,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:55:16,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:55:16,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:55:16,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:55:16,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:55:16,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 19:55:16,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 19:55:16,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 19:55:16,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:55:16,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:55:16,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:55:16,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:55:16,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:55:16,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:55:16,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:55:16,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:55:16,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:55:16,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:55:16,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:55:16,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:55:16,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:55:16,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:55:16,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:55:16,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:55:16,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:55:16,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:55:16,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:55:16,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:55:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:55:16,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:55:16,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:55:16,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 19:55:16,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 19:55:16,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 19:55:16,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 19:55:16,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 19:55:16,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-01-31 19:55:16,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-01-31 19:55:16,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:16,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 96 proven. 102 refuted. 0 times theorem prover too weak. 2182 trivial. 0 not checked. [2022-01-31 19:55:16,678 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:55:16,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596362830] [2022-01-31 19:55:16,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [596362830] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:55:16,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:55:16,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76 [2022-01-31 19:55:16,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150617365] [2022-01-31 19:55:16,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:55:16,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-01-31 19:55:16,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:55:16,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-01-31 19:55:16,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=5513, Unknown=0, NotChecked=0, Total=5700 [2022-01-31 19:55:16,680 INFO L87 Difference]: Start difference. First operand 531 states and 597 transitions. Second operand has 76 states, 75 states have (on average 2.7866666666666666) internal successors, (209), 72 states have internal predecessors, (209), 65 states have call successors, (68), 3 states have call predecessors, (68), 2 states have return successors, (66), 65 states have call predecessors, (66), 64 states have call successors, (66) [2022-01-31 19:55:24,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:55:24,455 INFO L93 Difference]: Finished difference Result 543 states and 609 transitions. [2022-01-31 19:55:24,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-01-31 19:55:24,455 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 2.7866666666666666) internal successors, (209), 72 states have internal predecessors, (209), 65 states have call successors, (68), 3 states have call predecessors, (68), 2 states have return successors, (66), 65 states have call predecessors, (66), 64 states have call successors, (66) Word has length 529 [2022-01-31 19:55:24,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:55:24,456 INFO L225 Difference]: With dead ends: 543 [2022-01-31 19:55:24,456 INFO L226 Difference]: Without dead ends: 541 [2022-01-31 19:55:24,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4066 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=753, Invalid=21003, Unknown=0, NotChecked=0, Total=21756 [2022-01-31 19:55:24,457 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 405 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 21366 mSolverCounterSat, 459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 21825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 459 IncrementalHoareTripleChecker+Valid, 21366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:55:24,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 299 Invalid, 21825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [459 Valid, 21366 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-01-31 19:55:24,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-01-31 19:55:25,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 531. [2022-01-31 19:55:25,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 395 states have (on average 1.0075949367088608) internal successors, (398), 397 states have internal predecessors, (398), 100 states have call successors, (100), 36 states have call predecessors, (100), 35 states have return successors, (99), 97 states have call predecessors, (99), 99 states have call successors, (99) [2022-01-31 19:55:25,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 597 transitions. [2022-01-31 19:55:25,050 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 597 transitions. Word has length 529 [2022-01-31 19:55:25,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:55:25,051 INFO L470 AbstractCegarLoop]: Abstraction has 531 states and 597 transitions. [2022-01-31 19:55:25,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 75 states have (on average 2.7866666666666666) internal successors, (209), 72 states have internal predecessors, (209), 65 states have call successors, (68), 3 states have call predecessors, (68), 2 states have return successors, (66), 65 states have call predecessors, (66), 64 states have call successors, (66) [2022-01-31 19:55:25,051 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 597 transitions. [2022-01-31 19:55:25,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2022-01-31 19:55:25,053 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:55:25,053 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:55:25,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-01-31 19:55:25,053 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:55:25,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:55:25,053 INFO L85 PathProgramCache]: Analyzing trace with hash 169964944, now seen corresponding path program 122 times [2022-01-31 19:55:25,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:55:25,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367494553] [2022-01-31 19:55:25,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:55:25,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:55:25,061 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:55:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:55:26,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:55:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:55:26,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:55:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:55:26,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:55:26,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:55:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:55:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:55:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:55:26,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:55:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:55:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:55:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:55:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:55:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:55:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:55:26,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:55:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:55:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:55:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:55:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:55:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:55:26,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:55:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:55:26,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:55:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:55:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:55:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:55:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:55:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:55:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:55:26,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:55:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 19:55:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 19:55:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:55:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:55:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:55:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:55:26,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:55:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:55:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:55:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:55:26,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:55:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:55:26,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:55:26,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:55:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:55:26,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:55:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:55:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:55:26,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:55:26,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:55:26,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:55:26,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:55:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:55:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:55:26,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:55:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:55:26,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 19:55:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 19:55:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 19:55:26,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 19:55:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 19:55:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-01-31 19:55:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-01-31 19:55:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2022-01-31 19:55:26,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:26,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2022-01-31 19:55:26,341 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:55:26,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367494553] [2022-01-31 19:55:26,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1367494553] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:55:26,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:55:26,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2022-01-31 19:55:26,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102328155] [2022-01-31 19:55:26,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:55:26,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-01-31 19:55:26,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:55:26,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-01-31 19:55:26,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1195, Invalid=3635, Unknown=0, NotChecked=0, Total=4830 [2022-01-31 19:55:26,343 INFO L87 Difference]: Start difference. First operand 531 states and 597 transitions. Second operand has 70 states, 70 states have (on average 2.9857142857142858) internal successors, (209), 69 states have internal predecessors, (209), 66 states have call successors, (69), 3 states have call predecessors, (69), 1 states have return successors, (67), 65 states have call predecessors, (67), 65 states have call successors, (67) [2022-01-31 19:55:29,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:55:29,121 INFO L93 Difference]: Finished difference Result 561 states and 631 transitions. [2022-01-31 19:55:29,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-31 19:55:29,122 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.9857142857142858) internal successors, (209), 69 states have internal predecessors, (209), 66 states have call successors, (69), 3 states have call predecessors, (69), 1 states have return successors, (67), 65 states have call predecessors, (67), 65 states have call successors, (67) Word has length 537 [2022-01-31 19:55:29,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:55:29,123 INFO L225 Difference]: With dead ends: 561 [2022-01-31 19:55:29,123 INFO L226 Difference]: Without dead ends: 417 [2022-01-31 19:55:29,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4979 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=4202, Invalid=14430, Unknown=0, NotChecked=0, Total=18632 [2022-01-31 19:55:29,124 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 799 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 2288 mSolverCounterSat, 892 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 3180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 892 IncrementalHoareTripleChecker+Valid, 2288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:55:29,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [803 Valid, 146 Invalid, 3180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [892 Valid, 2288 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 19:55:29,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-01-31 19:55:29,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 404. [2022-01-31 19:55:29,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 300 states have (on average 1.0066666666666666) internal successors, (302), 301 states have internal predecessors, (302), 69 states have call successors, (69), 35 states have call predecessors, (69), 34 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2022-01-31 19:55:29,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 439 transitions. [2022-01-31 19:55:29,482 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 439 transitions. Word has length 537 [2022-01-31 19:55:29,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:55:29,482 INFO L470 AbstractCegarLoop]: Abstraction has 404 states and 439 transitions. [2022-01-31 19:55:29,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 2.9857142857142858) internal successors, (209), 69 states have internal predecessors, (209), 66 states have call successors, (69), 3 states have call predecessors, (69), 1 states have return successors, (67), 65 states have call predecessors, (67), 65 states have call successors, (67) [2022-01-31 19:55:29,482 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 439 transitions. [2022-01-31 19:55:29,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2022-01-31 19:55:29,484 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:55:29,484 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 35, 33, 33, 33, 33, 33, 32, 32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:55:29,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2022-01-31 19:55:29,484 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:55:29,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:55:29,484 INFO L85 PathProgramCache]: Analyzing trace with hash 871810833, now seen corresponding path program 123 times [2022-01-31 19:55:29,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:55:29,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115373712] [2022-01-31 19:55:29,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:55:29,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:55:29,488 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:55:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:55:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:55:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:55:31,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:55:31,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:55:31,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:55:31,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:55:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:55:31,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:55:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:55:31,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:55:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:55:31,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:55:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:55:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:55:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:55:31,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:55:31,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:55:31,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:55:31,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:55:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:55:31,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:55:31,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:55:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:55:31,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:55:31,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:55:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:55:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:55:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:55:31,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:55:31,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:55:31,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:55:31,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:55:31,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 19:55:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 19:55:31,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 19:55:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:55:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:55:31,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:55:31,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:55:31,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:55:31,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:55:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:55:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:55:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:55:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:55:31,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:55:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:55:31,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:55:31,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:55:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:55:31,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:55:31,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:55:31,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:55:31,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:55:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:55:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:55:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:55:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:55:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 19:55:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 19:55:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 19:55:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 19:55:31,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 19:55:31,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-01-31 19:55:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-01-31 19:55:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2022-01-31 19:55:31,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:31,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 99 proven. 99 refuted. 0 times theorem prover too weak. 2182 trivial. 0 not checked. [2022-01-31 19:55:31,653 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:55:31,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115373712] [2022-01-31 19:55:31,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1115373712] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:55:31,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:55:31,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77 [2022-01-31 19:55:31,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620665704] [2022-01-31 19:55:31,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:55:31,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-01-31 19:55:31,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:55:31,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-01-31 19:55:31,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=5664, Unknown=0, NotChecked=0, Total=5852 [2022-01-31 19:55:31,655 INFO L87 Difference]: Start difference. First operand 404 states and 439 transitions. Second operand has 77 states, 76 states have (on average 2.789473684210526) internal successors, (212), 73 states have internal predecessors, (212), 66 states have call successors, (69), 3 states have call predecessors, (69), 2 states have return successors, (67), 66 states have call predecessors, (67), 65 states have call successors, (67) [2022-01-31 19:55:41,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:55:41,093 INFO L93 Difference]: Finished difference Result 559 states and 631 transitions. [2022-01-31 19:55:41,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-01-31 19:55:41,094 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 76 states have (on average 2.789473684210526) internal successors, (212), 73 states have internal predecessors, (212), 66 states have call successors, (69), 3 states have call predecessors, (69), 2 states have return successors, (67), 66 states have call predecessors, (67), 65 states have call successors, (67) Word has length 537 [2022-01-31 19:55:41,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:55:41,095 INFO L225 Difference]: With dead ends: 559 [2022-01-31 19:55:41,095 INFO L226 Difference]: Without dead ends: 557 [2022-01-31 19:55:41,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4262 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=841, Invalid=22111, Unknown=0, NotChecked=0, Total=22952 [2022-01-31 19:55:41,096 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 626 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 25974 mSolverCounterSat, 704 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 26678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 704 IncrementalHoareTripleChecker+Valid, 25974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-01-31 19:55:41,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [628 Valid, 377 Invalid, 26678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [704 Valid, 25974 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-01-31 19:55:41,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2022-01-31 19:55:41,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 539. [2022-01-31 19:55:41,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 401 states have (on average 1.0074812967581048) internal successors, (404), 403 states have internal predecessors, (404), 102 states have call successors, (102), 36 states have call predecessors, (102), 35 states have return successors, (101), 99 states have call predecessors, (101), 101 states have call successors, (101) [2022-01-31 19:55:41,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 607 transitions. [2022-01-31 19:55:41,723 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 607 transitions. Word has length 537 [2022-01-31 19:55:41,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:55:41,724 INFO L470 AbstractCegarLoop]: Abstraction has 539 states and 607 transitions. [2022-01-31 19:55:41,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 76 states have (on average 2.789473684210526) internal successors, (212), 73 states have internal predecessors, (212), 66 states have call successors, (69), 3 states have call predecessors, (69), 2 states have return successors, (67), 66 states have call predecessors, (67), 65 states have call successors, (67) [2022-01-31 19:55:41,724 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 607 transitions. [2022-01-31 19:55:41,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2022-01-31 19:55:41,726 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:55:41,726 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 35, 33, 33, 33, 33, 33, 33, 33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:55:41,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2022-01-31 19:55:41,727 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:55:41,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:55:41,727 INFO L85 PathProgramCache]: Analyzing trace with hash -253697569, now seen corresponding path program 124 times [2022-01-31 19:55:41,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:55:41,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704880496] [2022-01-31 19:55:41,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:55:41,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:55:41,731 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:55:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:55:43,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:55:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:55:43,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:55:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:55:43,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:55:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:55:43,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:55:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:55:43,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:55:43,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:55:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:55:43,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:55:43,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:55:43,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:55:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:55:43,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:55:43,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:55:43,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:55:43,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:55:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:55:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:55:43,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:55:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:55:43,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:55:43,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:55:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:55:43,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:55:43,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:55:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:55:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:55:43,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:55:43,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:55:43,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 19:55:43,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 19:55:43,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 19:55:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:55:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:55:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:55:43,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:55:43,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:55:43,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:55:43,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:55:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:55:43,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:55:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:55:43,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:55:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:55:43,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:55:43,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:55:43,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:55:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:55:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:55:43,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:55:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:55:43,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:55:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:55:43,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:55:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:55:43,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 19:55:43,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 19:55:43,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 19:55:43,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 19:55:43,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 19:55:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-01-31 19:55:43,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-01-31 19:55:43,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2022-01-31 19:55:43,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2022-01-31 19:55:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:43,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 102 proven. 96 refuted. 0 times theorem prover too weak. 2182 trivial. 0 not checked. [2022-01-31 19:55:43,212 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:55:43,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704880496] [2022-01-31 19:55:43,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1704880496] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:55:43,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:55:43,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78 [2022-01-31 19:55:43,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987590371] [2022-01-31 19:55:43,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:55:43,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-01-31 19:55:43,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:55:43,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-01-31 19:55:43,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=5817, Unknown=0, NotChecked=0, Total=6006 [2022-01-31 19:55:43,214 INFO L87 Difference]: Start difference. First operand 539 states and 607 transitions. Second operand has 78 states, 77 states have (on average 2.792207792207792) internal successors, (215), 74 states have internal predecessors, (215), 67 states have call successors, (70), 3 states have call predecessors, (70), 2 states have return successors, (68), 67 states have call predecessors, (68), 66 states have call successors, (68) [2022-01-31 19:55:52,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:55:52,818 INFO L93 Difference]: Finished difference Result 567 states and 639 transitions. [2022-01-31 19:55:52,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-01-31 19:55:52,818 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 77 states have (on average 2.792207792207792) internal successors, (215), 74 states have internal predecessors, (215), 67 states have call successors, (70), 3 states have call predecessors, (70), 2 states have return successors, (68), 67 states have call predecessors, (68), 66 states have call successors, (68) Word has length 545 [2022-01-31 19:55:52,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:55:52,820 INFO L225 Difference]: With dead ends: 567 [2022-01-31 19:55:52,820 INFO L226 Difference]: Without dead ends: 565 [2022-01-31 19:55:52,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4378 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=788, Invalid=22774, Unknown=0, NotChecked=0, Total=23562 [2022-01-31 19:55:52,821 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 585 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 26811 mSolverCounterSat, 658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 27469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 658 IncrementalHoareTripleChecker+Valid, 26811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-01-31 19:55:52,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [587 Valid, 370 Invalid, 27469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [658 Valid, 26811 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-01-31 19:55:52,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2022-01-31 19:55:53,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 547. [2022-01-31 19:55:53,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 407 states have (on average 1.0073710073710074) internal successors, (410), 409 states have internal predecessors, (410), 103 states have call successors, (103), 37 states have call predecessors, (103), 36 states have return successors, (102), 100 states have call predecessors, (102), 102 states have call successors, (102) [2022-01-31 19:55:53,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 615 transitions. [2022-01-31 19:55:53,449 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 615 transitions. Word has length 545 [2022-01-31 19:55:53,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:55:53,450 INFO L470 AbstractCegarLoop]: Abstraction has 547 states and 615 transitions. [2022-01-31 19:55:53,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 77 states have (on average 2.792207792207792) internal successors, (215), 74 states have internal predecessors, (215), 67 states have call successors, (70), 3 states have call predecessors, (70), 2 states have return successors, (68), 67 states have call predecessors, (68), 66 states have call successors, (68) [2022-01-31 19:55:53,450 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 615 transitions. [2022-01-31 19:55:53,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2022-01-31 19:55:53,452 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:55:53,452 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 36, 34, 34, 34, 34, 34, 32, 32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:55:53,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2022-01-31 19:55:53,452 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:55:53,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:55:53,452 INFO L85 PathProgramCache]: Analyzing trace with hash 448148320, now seen corresponding path program 125 times [2022-01-31 19:55:53,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:55:53,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115642409] [2022-01-31 19:55:53,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:55:53,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:55:53,456 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:55:53,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:55:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:55:55,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:55:55,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:55:55,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:55:55,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:55:55,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:55:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:55:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:55:55,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:55:55,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:55:55,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:55:55,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:55:55,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:55:55,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:55:55,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:55:55,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:55:55,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:55:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:55:55,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:55:55,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:55:55,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:55:55,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:55:55,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:55:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:55:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:55:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:55:55,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:55:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:55:55,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:55:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:55:55,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:55:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:55:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 19:55:55,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 19:55:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 19:55:55,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 19:55:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:55:55,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:55:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:55:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:55:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:55:55,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:55:55,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:55:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:55:55,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:55:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:55:55,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:55:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:55:55,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:55:55,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:55:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:55:55,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:55:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:55:55,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:55:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:55:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:55:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:55:55,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:55:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 19:55:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 19:55:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 19:55:55,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 19:55:55,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 19:55:55,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-01-31 19:55:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-01-31 19:55:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2022-01-31 19:55:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2022-01-31 19:55:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:55,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 99 proven. 105 refuted. 0 times theorem prover too weak. 2316 trivial. 0 not checked. [2022-01-31 19:55:55,383 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:55:55,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115642409] [2022-01-31 19:55:55,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2115642409] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:55:55,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:55:55,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78 [2022-01-31 19:55:55,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475238853] [2022-01-31 19:55:55,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:55:55,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-01-31 19:55:55,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:55:55,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-01-31 19:55:55,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=5814, Unknown=0, NotChecked=0, Total=6006 [2022-01-31 19:55:55,385 INFO L87 Difference]: Start difference. First operand 547 states and 615 transitions. Second operand has 78 states, 77 states have (on average 2.792207792207792) internal successors, (215), 74 states have internal predecessors, (215), 67 states have call successors, (70), 3 states have call predecessors, (70), 2 states have return successors, (68), 67 states have call predecessors, (68), 66 states have call successors, (68) [2022-01-31 19:56:05,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:56:05,391 INFO L93 Difference]: Finished difference Result 559 states and 627 transitions. [2022-01-31 19:56:05,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-31 19:56:05,391 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 77 states have (on average 2.792207792207792) internal successors, (215), 74 states have internal predecessors, (215), 67 states have call successors, (70), 3 states have call predecessors, (70), 2 states have return successors, (68), 67 states have call predecessors, (68), 66 states have call successors, (68) Word has length 545 [2022-01-31 19:56:05,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:56:05,392 INFO L225 Difference]: With dead ends: 559 [2022-01-31 19:56:05,392 INFO L226 Difference]: Without dead ends: 557 [2022-01-31 19:56:05,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4291 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=774, Invalid=22178, Unknown=0, NotChecked=0, Total=22952 [2022-01-31 19:56:05,393 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 359 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 24918 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 25335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 24918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-01-31 19:56:05,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 446 Invalid, 25335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 24918 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-01-31 19:56:05,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2022-01-31 19:56:06,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 547. [2022-01-31 19:56:06,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 407 states have (on average 1.0073710073710074) internal successors, (410), 409 states have internal predecessors, (410), 103 states have call successors, (103), 37 states have call predecessors, (103), 36 states have return successors, (102), 100 states have call predecessors, (102), 102 states have call successors, (102) [2022-01-31 19:56:06,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 615 transitions. [2022-01-31 19:56:06,051 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 615 transitions. Word has length 545 [2022-01-31 19:56:06,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:56:06,051 INFO L470 AbstractCegarLoop]: Abstraction has 547 states and 615 transitions. [2022-01-31 19:56:06,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 77 states have (on average 2.792207792207792) internal successors, (215), 74 states have internal predecessors, (215), 67 states have call successors, (70), 3 states have call predecessors, (70), 2 states have return successors, (68), 67 states have call predecessors, (68), 66 states have call successors, (68) [2022-01-31 19:56:06,051 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 615 transitions. [2022-01-31 19:56:06,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2022-01-31 19:56:06,053 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:56:06,053 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 35, 34, 34, 34, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:56:06,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2022-01-31 19:56:06,054 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:56:06,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:56:06,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1713524397, now seen corresponding path program 126 times [2022-01-31 19:56:06,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:56:06,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127287924] [2022-01-31 19:56:06,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:56:06,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:56:06,057 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:56:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:56:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:56:07,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:56:07,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:56:07,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:56:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:56:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:56:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:56:07,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:56:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:56:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:56:07,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:56:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:56:07,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:56:07,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:56:07,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:56:07,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:56:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:56:07,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:56:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:56:07,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:56:07,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:56:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:56:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:56:07,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:56:07,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:56:07,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:56:07,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:56:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:56:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:56:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:56:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:56:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:56:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 19:56:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 19:56:07,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 19:56:07,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:56:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:56:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:56:07,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:56:07,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:56:07,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:56:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:56:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:56:07,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:56:07,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:56:07,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:56:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:56:07,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:56:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:56:07,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:56:07,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:56:07,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:56:07,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:56:07,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:56:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:56:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:56:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:56:07,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:56:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 19:56:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 19:56:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 19:56:07,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 19:56:07,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 19:56:07,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-01-31 19:56:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-01-31 19:56:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2022-01-31 19:56:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2022-01-31 19:56:07,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2022-01-31 19:56:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-01-31 19:56:07,300 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:56:07,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127287924] [2022-01-31 19:56:07,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [127287924] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:56:07,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:56:07,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2022-01-31 19:56:07,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982906132] [2022-01-31 19:56:07,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:56:07,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-01-31 19:56:07,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:56:07,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-01-31 19:56:07,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1265, Invalid=3847, Unknown=0, NotChecked=0, Total=5112 [2022-01-31 19:56:07,302 INFO L87 Difference]: Start difference. First operand 547 states and 615 transitions. Second operand has 72 states, 72 states have (on average 2.986111111111111) internal successors, (215), 71 states have internal predecessors, (215), 68 states have call successors, (71), 3 states have call predecessors, (71), 1 states have return successors, (69), 67 states have call predecessors, (69), 67 states have call successors, (69) [2022-01-31 19:56:09,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:56:09,978 INFO L93 Difference]: Finished difference Result 577 states and 649 transitions. [2022-01-31 19:56:09,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-31 19:56:09,978 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.986111111111111) internal successors, (215), 71 states have internal predecessors, (215), 68 states have call successors, (71), 3 states have call predecessors, (71), 1 states have return successors, (69), 67 states have call predecessors, (69), 67 states have call successors, (69) Word has length 553 [2022-01-31 19:56:09,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:56:09,979 INFO L225 Difference]: With dead ends: 577 [2022-01-31 19:56:09,979 INFO L226 Difference]: Without dead ends: 429 [2022-01-31 19:56:09,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5283 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4448, Invalid=15292, Unknown=0, NotChecked=0, Total=19740 [2022-01-31 19:56:09,980 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 781 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1904 mSolverCounterSat, 880 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 2784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 880 IncrementalHoareTripleChecker+Valid, 1904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 19:56:09,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [785 Valid, 133 Invalid, 2784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [880 Valid, 1904 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 19:56:09,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-01-31 19:56:10,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 416. [2022-01-31 19:56:10,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 309 states have (on average 1.006472491909385) internal successors, (311), 310 states have internal predecessors, (311), 71 states have call successors, (71), 36 states have call predecessors, (71), 35 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2022-01-31 19:56:10,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 452 transitions. [2022-01-31 19:56:10,385 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 452 transitions. Word has length 553 [2022-01-31 19:56:10,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:56:10,385 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 452 transitions. [2022-01-31 19:56:10,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.986111111111111) internal successors, (215), 71 states have internal predecessors, (215), 68 states have call successors, (71), 3 states have call predecessors, (71), 1 states have return successors, (69), 67 states have call predecessors, (69), 67 states have call successors, (69) [2022-01-31 19:56:10,386 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 452 transitions. [2022-01-31 19:56:10,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2022-01-31 19:56:10,387 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:56:10,388 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 36, 34, 34, 34, 34, 34, 33, 33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:56:10,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2022-01-31 19:56:10,388 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:56:10,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:56:10,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1217564462, now seen corresponding path program 127 times [2022-01-31 19:56:10,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:56:10,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334519256] [2022-01-31 19:56:10,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:56:10,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:56:10,391 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:56:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:56:12,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:56:12,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:56:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:56:12,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:56:12,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:56:12,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:56:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:56:12,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:56:12,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:56:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:56:12,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:56:12,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:56:12,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:56:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:56:12,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:56:12,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:56:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:56:12,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:56:12,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:56:12,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:56:12,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:56:12,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:56:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:56:12,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:56:12,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:56:12,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:56:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:56:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:56:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:56:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:56:12,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:56:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:56:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 19:56:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 19:56:12,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 19:56:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 19:56:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:56:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:56:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:56:12,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:56:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:56:12,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:56:12,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:56:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:56:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:56:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:56:12,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:56:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:56:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:56:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:56:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:56:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:56:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:56:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:56:12,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:56:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:56:12,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:56:12,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:56:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 19:56:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 19:56:12,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 19:56:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 19:56:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 19:56:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-01-31 19:56:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-01-31 19:56:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2022-01-31 19:56:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2022-01-31 19:56:12,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2022-01-31 19:56:12,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:12,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 102 proven. 102 refuted. 0 times theorem prover too weak. 2316 trivial. 0 not checked. [2022-01-31 19:56:12,616 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:56:12,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334519256] [2022-01-31 19:56:12,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [334519256] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:56:12,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:56:12,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [79] imperfect sequences [] total 79 [2022-01-31 19:56:12,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793728486] [2022-01-31 19:56:12,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:56:12,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-01-31 19:56:12,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:56:12,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-01-31 19:56:12,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=5969, Unknown=0, NotChecked=0, Total=6162 [2022-01-31 19:56:12,617 INFO L87 Difference]: Start difference. First operand 416 states and 452 transitions. Second operand has 79 states, 78 states have (on average 2.7948717948717947) internal successors, (218), 75 states have internal predecessors, (218), 68 states have call successors, (71), 3 states have call predecessors, (71), 2 states have return successors, (69), 68 states have call predecessors, (69), 67 states have call successors, (69) [2022-01-31 19:56:22,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:56:22,412 INFO L93 Difference]: Finished difference Result 575 states and 649 transitions. [2022-01-31 19:56:22,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-31 19:56:22,412 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 78 states have (on average 2.7948717948717947) internal successors, (218), 75 states have internal predecessors, (218), 68 states have call successors, (71), 3 states have call predecessors, (71), 2 states have return successors, (69), 68 states have call predecessors, (69), 67 states have call successors, (69) Word has length 553 [2022-01-31 19:56:22,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:56:22,414 INFO L225 Difference]: With dead ends: 575 [2022-01-31 19:56:22,414 INFO L226 Difference]: Without dead ends: 573 [2022-01-31 19:56:22,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4492 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=864, Invalid=23316, Unknown=0, NotChecked=0, Total=24180 [2022-01-31 19:56:22,415 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 621 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 28043 mSolverCounterSat, 701 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 28744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 701 IncrementalHoareTripleChecker+Valid, 28043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-01-31 19:56:22,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [623 Valid, 418 Invalid, 28744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [701 Valid, 28043 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-01-31 19:56:22,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2022-01-31 19:56:23,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 555. [2022-01-31 19:56:23,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 413 states have (on average 1.0072639225181599) internal successors, (416), 415 states have internal predecessors, (416), 105 states have call successors, (105), 37 states have call predecessors, (105), 36 states have return successors, (104), 102 states have call predecessors, (104), 104 states have call successors, (104) [2022-01-31 19:56:23,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 625 transitions. [2022-01-31 19:56:23,062 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 625 transitions. Word has length 553 [2022-01-31 19:56:23,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:56:23,062 INFO L470 AbstractCegarLoop]: Abstraction has 555 states and 625 transitions. [2022-01-31 19:56:23,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 78 states have (on average 2.7948717948717947) internal successors, (218), 75 states have internal predecessors, (218), 68 states have call successors, (71), 3 states have call predecessors, (71), 2 states have return successors, (69), 68 states have call predecessors, (69), 67 states have call successors, (69) [2022-01-31 19:56:23,063 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 625 transitions. [2022-01-31 19:56:23,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2022-01-31 19:56:23,065 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:56:23,065 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 36, 34, 34, 34, 34, 34, 34, 34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:56:23,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2022-01-31 19:56:23,065 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:56:23,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:56:23,065 INFO L85 PathProgramCache]: Analyzing trace with hash 2096446716, now seen corresponding path program 128 times [2022-01-31 19:56:23,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:56:23,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466059774] [2022-01-31 19:56:23,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:56:23,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:56:23,068 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:56:23,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:56:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:56:24,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:56:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:56:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:56:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:56:24,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:56:24,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:56:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:56:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:56:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:56:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:56:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:56:24,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:56:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:56:24,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:56:24,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:56:24,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:56:24,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:56:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:56:24,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:56:24,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:56:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:56:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:56:24,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:56:24,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:56:24,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:56:24,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:56:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:56:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:56:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:56:24,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:56:24,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:56:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 19:56:24,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 19:56:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 19:56:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 19:56:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:56:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:56:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:56:24,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:56:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:56:24,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:56:24,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:56:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:56:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:56:24,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:56:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:56:24,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:56:24,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:56:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:56:24,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:56:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:56:24,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:56:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:56:24,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:56:24,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:56:24,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:56:24,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:56:24,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 19:56:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 19:56:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 19:56:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 19:56:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 19:56:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-01-31 19:56:24,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-01-31 19:56:24,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2022-01-31 19:56:24,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2022-01-31 19:56:24,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2022-01-31 19:56:24,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2022-01-31 19:56:24,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:24,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 105 proven. 99 refuted. 0 times theorem prover too weak. 2316 trivial. 0 not checked. [2022-01-31 19:56:24,703 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:56:24,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466059774] [2022-01-31 19:56:24,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1466059774] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:56:24,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:56:24,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [81] imperfect sequences [] total 81 [2022-01-31 19:56:24,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561945299] [2022-01-31 19:56:24,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:56:24,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-01-31 19:56:24,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:56:24,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-01-31 19:56:24,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=6283, Unknown=0, NotChecked=0, Total=6480 [2022-01-31 19:56:24,705 INFO L87 Difference]: Start difference. First operand 555 states and 625 transitions. Second operand has 81 states, 79 states have (on average 2.7974683544303796) internal successors, (221), 77 states have internal predecessors, (221), 69 states have call successors, (72), 3 states have call predecessors, (72), 2 states have return successors, (70), 69 states have call predecessors, (70), 68 states have call successors, (70) [2022-01-31 19:56:37,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:56:37,256 INFO L93 Difference]: Finished difference Result 583 states and 657 transitions. [2022-01-31 19:56:37,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-31 19:56:37,257 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 79 states have (on average 2.7974683544303796) internal successors, (221), 77 states have internal predecessors, (221), 69 states have call successors, (72), 3 states have call predecessors, (72), 2 states have return successors, (70), 69 states have call predecessors, (70), 68 states have call successors, (70) Word has length 561 [2022-01-31 19:56:37,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:56:37,258 INFO L225 Difference]: With dead ends: 583 [2022-01-31 19:56:37,258 INFO L226 Difference]: Without dead ends: 581 [2022-01-31 19:56:37,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4688 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=817, Invalid=24305, Unknown=0, NotChecked=0, Total=25122 [2022-01-31 19:56:37,259 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 640 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 27917 mSolverCounterSat, 716 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 28633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 716 IncrementalHoareTripleChecker+Valid, 27917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-01-31 19:56:37,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [642 Valid, 337 Invalid, 28633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [716 Valid, 27917 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2022-01-31 19:56:37,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2022-01-31 19:56:37,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 563. [2022-01-31 19:56:37,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 419 states have (on average 1.0071599045346062) internal successors, (422), 421 states have internal predecessors, (422), 106 states have call successors, (106), 38 states have call predecessors, (106), 37 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2022-01-31 19:56:37,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 633 transitions. [2022-01-31 19:56:37,925 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 633 transitions. Word has length 561 [2022-01-31 19:56:37,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:56:37,925 INFO L470 AbstractCegarLoop]: Abstraction has 563 states and 633 transitions. [2022-01-31 19:56:37,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 79 states have (on average 2.7974683544303796) internal successors, (221), 77 states have internal predecessors, (221), 69 states have call successors, (72), 3 states have call predecessors, (72), 2 states have return successors, (70), 69 states have call predecessors, (70), 68 states have call successors, (70) [2022-01-31 19:56:37,925 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 633 transitions. [2022-01-31 19:56:37,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2022-01-31 19:56:37,928 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:56:37,928 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 37, 35, 35, 35, 35, 35, 33, 33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:56:37,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2022-01-31 19:56:37,928 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:56:37,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:56:37,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1600486781, now seen corresponding path program 129 times [2022-01-31 19:56:37,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:56:37,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957797028] [2022-01-31 19:56:37,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:56:37,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:56:37,932 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:56:38,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:56:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:56:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:56:39,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:56:39,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:56:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:56:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:56:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:56:39,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:56:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:56:39,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:56:39,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:56:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:56:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:56:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:56:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:56:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:56:39,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:56:39,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:56:39,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:56:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:56:39,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:56:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:56:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:56:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:56:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:56:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:56:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:56:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:56:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:56:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:56:39,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:56:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:56:39,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 19:56:39,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 19:56:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 19:56:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 19:56:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 19:56:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:56:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:56:39,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:56:39,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:56:39,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:56:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:56:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:56:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:56:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:56:39,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:56:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:56:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:56:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:56:39,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:56:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:56:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:56:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:56:39,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:56:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:56:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:56:39,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:56:39,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 19:56:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 19:56:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 19:56:39,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 19:56:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 19:56:39,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-01-31 19:56:39,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:39,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-01-31 19:56:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:40,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2022-01-31 19:56:40,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:40,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2022-01-31 19:56:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:40,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2022-01-31 19:56:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:40,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2022-01-31 19:56:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:40,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 102 proven. 108 refuted. 0 times theorem prover too weak. 2454 trivial. 0 not checked. [2022-01-31 19:56:40,006 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:56:40,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957797028] [2022-01-31 19:56:40,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1957797028] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:56:40,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:56:40,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80 [2022-01-31 19:56:40,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543665012] [2022-01-31 19:56:40,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:56:40,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-01-31 19:56:40,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:56:40,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-01-31 19:56:40,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=6123, Unknown=0, NotChecked=0, Total=6320 [2022-01-31 19:56:40,008 INFO L87 Difference]: Start difference. First operand 563 states and 633 transitions. Second operand has 80 states, 79 states have (on average 2.7974683544303796) internal successors, (221), 76 states have internal predecessors, (221), 69 states have call successors, (72), 3 states have call predecessors, (72), 2 states have return successors, (70), 69 states have call predecessors, (70), 68 states have call successors, (70) [2022-01-31 19:56:49,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:56:49,340 INFO L93 Difference]: Finished difference Result 575 states and 645 transitions. [2022-01-31 19:56:49,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-01-31 19:56:49,340 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 2.7974683544303796) internal successors, (221), 76 states have internal predecessors, (221), 69 states have call successors, (72), 3 states have call predecessors, (72), 2 states have return successors, (70), 69 states have call predecessors, (70), 68 states have call successors, (70) Word has length 561 [2022-01-31 19:56:49,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:56:49,342 INFO L225 Difference]: With dead ends: 575 [2022-01-31 19:56:49,342 INFO L226 Difference]: Without dead ends: 573 [2022-01-31 19:56:49,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4522 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=795, Invalid=23385, Unknown=0, NotChecked=0, Total=24180 [2022-01-31 19:56:49,343 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 473 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 24730 mSolverCounterSat, 530 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 25260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 530 IncrementalHoareTripleChecker+Valid, 24730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:56:49,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 353 Invalid, 25260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [530 Valid, 24730 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-01-31 19:56:49,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2022-01-31 19:56:50,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 563. [2022-01-31 19:56:50,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 419 states have (on average 1.0071599045346062) internal successors, (422), 421 states have internal predecessors, (422), 106 states have call successors, (106), 38 states have call predecessors, (106), 37 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2022-01-31 19:56:50,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 633 transitions. [2022-01-31 19:56:50,011 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 633 transitions. Word has length 561 [2022-01-31 19:56:50,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:56:50,012 INFO L470 AbstractCegarLoop]: Abstraction has 563 states and 633 transitions. [2022-01-31 19:56:50,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 79 states have (on average 2.7974683544303796) internal successors, (221), 76 states have internal predecessors, (221), 69 states have call successors, (72), 3 states have call predecessors, (72), 2 states have return successors, (70), 69 states have call predecessors, (70), 68 states have call successors, (70) [2022-01-31 19:56:50,012 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 633 transitions. [2022-01-31 19:56:50,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2022-01-31 19:56:50,014 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:56:50,014 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 36, 35, 35, 35, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:56:50,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2022-01-31 19:56:50,014 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:56:50,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:56:50,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1116980022, now seen corresponding path program 130 times [2022-01-31 19:56:50,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:56:50,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075700455] [2022-01-31 19:56:50,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:56:50,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:56:50,018 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:56:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:56:51,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:56:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:56:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:56:51,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:56:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:56:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:56:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:56:51,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:56:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:56:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:56:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:56:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:56:51,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:56:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:56:51,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:56:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:56:51,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:56:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:56:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:56:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:56:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:56:51,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:56:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:56:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:56:51,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:56:51,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:56:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:56:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:56:51,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:56:51,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:56:51,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:56:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:56:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 19:56:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 19:56:51,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 19:56:51,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 19:56:51,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:56:51,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:56:51,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:56:51,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:56:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:56:51,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:56:51,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:56:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:56:51,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:56:51,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:56:51,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:56:51,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:56:51,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:56:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:56:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:56:51,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:56:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:56:51,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:56:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:56:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:56:51,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:56:51,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:56:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 19:56:51,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 19:56:51,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 19:56:51,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 19:56:51,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 19:56:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-01-31 19:56:51,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-01-31 19:56:51,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2022-01-31 19:56:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2022-01-31 19:56:51,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2022-01-31 19:56:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2022-01-31 19:56:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2022-01-31 19:56:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:51,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2022-01-31 19:56:51,138 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:56:51,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075700455] [2022-01-31 19:56:51,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2075700455] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:56:51,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:56:51,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74 [2022-01-31 19:56:51,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185722825] [2022-01-31 19:56:51,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:56:51,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-01-31 19:56:51,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:56:51,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-01-31 19:56:51,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1337, Invalid=4065, Unknown=0, NotChecked=0, Total=5402 [2022-01-31 19:56:51,140 INFO L87 Difference]: Start difference. First operand 563 states and 633 transitions. Second operand has 74 states, 74 states have (on average 2.9864864864864864) internal successors, (221), 73 states have internal predecessors, (221), 70 states have call successors, (73), 3 states have call predecessors, (73), 1 states have return successors, (71), 69 states have call predecessors, (71), 69 states have call successors, (71) [2022-01-31 19:56:53,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:56:53,799 INFO L93 Difference]: Finished difference Result 593 states and 667 transitions. [2022-01-31 19:56:53,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-31 19:56:53,800 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.9864864864864864) internal successors, (221), 73 states have internal predecessors, (221), 70 states have call successors, (73), 3 states have call predecessors, (73), 1 states have return successors, (71), 69 states have call predecessors, (71), 69 states have call successors, (71) Word has length 569 [2022-01-31 19:56:53,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:56:53,801 INFO L225 Difference]: With dead ends: 593 [2022-01-31 19:56:53,801 INFO L226 Difference]: Without dead ends: 441 [2022-01-31 19:56:53,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5596 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=4701, Invalid=16179, Unknown=0, NotChecked=0, Total=20880 [2022-01-31 19:56:53,812 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 887 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1765 mSolverCounterSat, 987 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 2752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 987 IncrementalHoareTripleChecker+Valid, 1765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 19:56:53,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [891 Valid, 120 Invalid, 2752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [987 Valid, 1765 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 19:56:53,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-01-31 19:56:54,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 428. [2022-01-31 19:56:54,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 318 states have (on average 1.0062893081761006) internal successors, (320), 319 states have internal predecessors, (320), 73 states have call successors, (73), 37 states have call predecessors, (73), 36 states have return successors, (72), 71 states have call predecessors, (72), 72 states have call successors, (72) [2022-01-31 19:56:54,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 465 transitions. [2022-01-31 19:56:54,284 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 465 transitions. Word has length 569 [2022-01-31 19:56:54,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:56:54,284 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 465 transitions. [2022-01-31 19:56:54,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.9864864864864864) internal successors, (221), 73 states have internal predecessors, (221), 70 states have call successors, (73), 3 states have call predecessors, (73), 1 states have return successors, (71), 69 states have call predecessors, (71), 69 states have call successors, (71) [2022-01-31 19:56:54,284 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 465 transitions. [2022-01-31 19:56:54,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2022-01-31 19:56:54,286 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:56:54,287 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 37, 35, 35, 35, 35, 35, 34, 34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:56:54,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2022-01-31 19:56:54,287 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:56:54,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:56:54,287 INFO L85 PathProgramCache]: Analyzing trace with hash 35155019, now seen corresponding path program 131 times [2022-01-31 19:56:54,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:56:54,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531511978] [2022-01-31 19:56:54,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:56:54,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:56:54,290 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:56:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:56:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:56:56,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:56:56,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:56:56,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:56:56,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:56:56,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:56:56,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:56:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:56:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:56:56,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:56:56,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:56:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:56:56,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:56:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:56:56,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:56:56,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:56:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:56:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:56:56,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:56:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:56:56,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:56:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:56:56,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:56:56,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:56:56,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:56:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:56:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:56:56,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:56:56,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:56:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:56:56,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:56:56,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:56:56,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 19:56:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 19:56:56,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 19:56:56,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 19:56:56,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 19:56:56,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:56:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:56:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:56:56,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:56:56,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:56:56,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:56:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:56:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:56:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:56:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:56:56,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:56:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:56:56,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:56:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:56:56,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:56:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:56:56,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:56:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:56:56,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:56:56,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:56:56,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:56:56,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 19:56:56,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 19:56:56,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 19:56:56,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 19:56:56,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 19:56:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-01-31 19:56:56,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-01-31 19:56:56,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2022-01-31 19:56:56,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2022-01-31 19:56:56,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2022-01-31 19:56:56,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2022-01-31 19:56:56,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2022-01-31 19:56:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 105 proven. 105 refuted. 0 times theorem prover too weak. 2454 trivial. 0 not checked. [2022-01-31 19:56:56,399 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:56:56,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531511978] [2022-01-31 19:56:56,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [531511978] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:56:56,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:56:56,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [81] imperfect sequences [] total 81 [2022-01-31 19:56:56,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493808874] [2022-01-31 19:56:56,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:56:56,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-01-31 19:56:56,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:56:56,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-01-31 19:56:56,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=6282, Unknown=0, NotChecked=0, Total=6480 [2022-01-31 19:56:56,401 INFO L87 Difference]: Start difference. First operand 428 states and 465 transitions. Second operand has 81 states, 80 states have (on average 2.8) internal successors, (224), 77 states have internal predecessors, (224), 70 states have call successors, (73), 3 states have call predecessors, (73), 2 states have return successors, (71), 70 states have call predecessors, (71), 69 states have call successors, (71) [2022-01-31 19:57:06,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:57:06,825 INFO L93 Difference]: Finished difference Result 591 states and 667 transitions. [2022-01-31 19:57:06,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-01-31 19:57:06,826 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 80 states have (on average 2.8) internal successors, (224), 77 states have internal predecessors, (224), 70 states have call successors, (73), 3 states have call predecessors, (73), 2 states have return successors, (71), 70 states have call predecessors, (71), 69 states have call successors, (71) Word has length 569 [2022-01-31 19:57:06,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:57:06,827 INFO L225 Difference]: With dead ends: 591 [2022-01-31 19:57:06,827 INFO L226 Difference]: Without dead ends: 589 [2022-01-31 19:57:06,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4728 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=887, Invalid=24553, Unknown=0, NotChecked=0, Total=25440 [2022-01-31 19:57:06,828 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 657 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 27857 mSolverCounterSat, 742 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 28599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 742 IncrementalHoareTripleChecker+Valid, 27857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-01-31 19:57:06,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [659 Valid, 320 Invalid, 28599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [742 Valid, 27857 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-01-31 19:57:06,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2022-01-31 19:57:07,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 571. [2022-01-31 19:57:07,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 425 states have (on average 1.0070588235294118) internal successors, (428), 427 states have internal predecessors, (428), 108 states have call successors, (108), 38 states have call predecessors, (108), 37 states have return successors, (107), 105 states have call predecessors, (107), 107 states have call successors, (107) [2022-01-31 19:57:07,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 643 transitions. [2022-01-31 19:57:07,535 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 643 transitions. Word has length 569 [2022-01-31 19:57:07,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:57:07,536 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 643 transitions. [2022-01-31 19:57:07,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 80 states have (on average 2.8) internal successors, (224), 77 states have internal predecessors, (224), 70 states have call successors, (73), 3 states have call predecessors, (73), 2 states have return successors, (71), 70 states have call predecessors, (71), 69 states have call successors, (71) [2022-01-31 19:57:07,536 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 643 transitions. [2022-01-31 19:57:07,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2022-01-31 19:57:07,538 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:57:07,538 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 37, 35, 35, 35, 35, 35, 35, 35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:57:07,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2022-01-31 19:57:07,538 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:57:07,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:57:07,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1056002791, now seen corresponding path program 132 times [2022-01-31 19:57:07,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:57:07,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073207122] [2022-01-31 19:57:07,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:57:07,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:57:07,542 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:57:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:57:09,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:57:09,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:57:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:57:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:57:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:57:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:57:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:57:09,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:57:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:57:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:57:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:57:09,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:57:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:57:09,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:57:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:57:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:57:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:57:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:57:09,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:57:09,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:57:09,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:57:09,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:57:09,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:57:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:57:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:57:09,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:57:09,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:57:09,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:57:09,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:57:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:57:09,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:57:09,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:57:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 19:57:09,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 19:57:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 19:57:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 19:57:09,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 19:57:09,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:57:09,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:57:09,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:57:09,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:57:09,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:57:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:57:09,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:57:09,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:57:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:57:09,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:57:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:57:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:57:09,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:57:09,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:57:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:57:09,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:57:09,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:57:09,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:57:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:57:09,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:57:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:57:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 19:57:09,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 19:57:09,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 19:57:09,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 19:57:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 19:57:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-01-31 19:57:09,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-01-31 19:57:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2022-01-31 19:57:09,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2022-01-31 19:57:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2022-01-31 19:57:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2022-01-31 19:57:09,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2022-01-31 19:57:09,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2022-01-31 19:57:09,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:09,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 108 proven. 102 refuted. 0 times theorem prover too weak. 2454 trivial. 0 not checked. [2022-01-31 19:57:09,770 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:57:09,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073207122] [2022-01-31 19:57:09,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1073207122] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:57:09,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:57:09,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [82] imperfect sequences [] total 82 [2022-01-31 19:57:09,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404772588] [2022-01-31 19:57:09,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:57:09,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-01-31 19:57:09,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:57:09,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-01-31 19:57:09,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=6443, Unknown=0, NotChecked=0, Total=6642 [2022-01-31 19:57:09,771 INFO L87 Difference]: Start difference. First operand 571 states and 643 transitions. Second operand has 82 states, 81 states have (on average 2.802469135802469) internal successors, (227), 78 states have internal predecessors, (227), 71 states have call successors, (74), 3 states have call predecessors, (74), 2 states have return successors, (72), 71 states have call predecessors, (72), 70 states have call successors, (72) [2022-01-31 19:57:21,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:57:21,009 INFO L93 Difference]: Finished difference Result 599 states and 675 transitions. [2022-01-31 19:57:21,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-01-31 19:57:21,009 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 81 states have (on average 2.802469135802469) internal successors, (227), 78 states have internal predecessors, (227), 71 states have call successors, (74), 3 states have call predecessors, (74), 2 states have return successors, (72), 71 states have call predecessors, (72), 70 states have call successors, (72) Word has length 577 [2022-01-31 19:57:21,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:57:21,011 INFO L225 Difference]: With dead ends: 599 [2022-01-31 19:57:21,011 INFO L226 Difference]: Without dead ends: 597 [2022-01-31 19:57:21,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4850 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=830, Invalid=25252, Unknown=0, NotChecked=0, Total=26082 [2022-01-31 19:57:21,012 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 683 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 28828 mSolverCounterSat, 759 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 29587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 759 IncrementalHoareTripleChecker+Valid, 28828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-01-31 19:57:21,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [685 Valid, 308 Invalid, 29587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [759 Valid, 28828 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-01-31 19:57:21,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2022-01-31 19:57:21,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 579. [2022-01-31 19:57:21,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 431 states have (on average 1.0069605568445477) internal successors, (434), 433 states have internal predecessors, (434), 109 states have call successors, (109), 39 states have call predecessors, (109), 38 states have return successors, (108), 106 states have call predecessors, (108), 108 states have call successors, (108) [2022-01-31 19:57:21,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 651 transitions. [2022-01-31 19:57:21,729 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 651 transitions. Word has length 577 [2022-01-31 19:57:21,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:57:21,729 INFO L470 AbstractCegarLoop]: Abstraction has 579 states and 651 transitions. [2022-01-31 19:57:21,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 81 states have (on average 2.802469135802469) internal successors, (227), 78 states have internal predecessors, (227), 71 states have call successors, (74), 3 states have call predecessors, (74), 2 states have return successors, (72), 71 states have call predecessors, (72), 70 states have call successors, (72) [2022-01-31 19:57:21,729 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 651 transitions. [2022-01-31 19:57:21,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2022-01-31 19:57:21,731 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:57:21,731 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 36, 36, 36, 36, 36, 34, 34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:57:21,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2022-01-31 19:57:21,732 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:57:21,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:57:21,732 INFO L85 PathProgramCache]: Analyzing trace with hash 96132250, now seen corresponding path program 133 times [2022-01-31 19:57:21,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:57:21,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228143574] [2022-01-31 19:57:21,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:57:21,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:57:21,735 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:57:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:57:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:57:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:57:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:57:23,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:57:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:57:23,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:57:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:57:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:57:23,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:57:23,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:57:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:57:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:57:23,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:57:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:57:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:57:23,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:57:23,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:57:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:57:23,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:57:23,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:57:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:57:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:57:23,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:57:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:57:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:57:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:57:23,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:57:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:57:23,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:57:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:57:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:57:23,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:57:23,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 19:57:23,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 19:57:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 19:57:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 19:57:23,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 19:57:23,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 19:57:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:57:23,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:57:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:57:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:57:23,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:57:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:57:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:57:23,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:57:23,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:57:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:57:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:57:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:57:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:57:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:57:23,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:57:23,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:57:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:57:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:57:23,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:57:23,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:57:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 19:57:23,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 19:57:23,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 19:57:23,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 19:57:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 19:57:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-01-31 19:57:23,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-01-31 19:57:23,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2022-01-31 19:57:23,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2022-01-31 19:57:23,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2022-01-31 19:57:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2022-01-31 19:57:23,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2022-01-31 19:57:23,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2022-01-31 19:57:23,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:23,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 105 proven. 111 refuted. 0 times theorem prover too weak. 2596 trivial. 0 not checked. [2022-01-31 19:57:23,564 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:57:23,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228143574] [2022-01-31 19:57:23,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1228143574] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:57:23,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:57:23,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [83] imperfect sequences [] total 83 [2022-01-31 19:57:23,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412295641] [2022-01-31 19:57:23,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:57:23,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-01-31 19:57:23,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:57:23,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-01-31 19:57:23,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=6601, Unknown=0, NotChecked=0, Total=6806 [2022-01-31 19:57:23,565 INFO L87 Difference]: Start difference. First operand 579 states and 651 transitions. Second operand has 83 states, 81 states have (on average 2.802469135802469) internal successors, (227), 79 states have internal predecessors, (227), 71 states have call successors, (74), 3 states have call predecessors, (74), 2 states have return successors, (72), 71 states have call predecessors, (72), 70 states have call successors, (72) [2022-01-31 19:57:33,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:57:33,586 INFO L93 Difference]: Finished difference Result 591 states and 663 transitions. [2022-01-31 19:57:33,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-31 19:57:33,586 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 81 states have (on average 2.802469135802469) internal successors, (227), 79 states have internal predecessors, (227), 71 states have call successors, (74), 3 states have call predecessors, (74), 2 states have return successors, (72), 71 states have call predecessors, (72), 70 states have call successors, (72) Word has length 577 [2022-01-31 19:57:33,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:57:33,588 INFO L225 Difference]: With dead ends: 591 [2022-01-31 19:57:33,588 INFO L226 Difference]: Without dead ends: 589 [2022-01-31 19:57:33,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4838 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=824, Invalid=24936, Unknown=0, NotChecked=0, Total=25760 [2022-01-31 19:57:33,589 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 400 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 27272 mSolverCounterSat, 463 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 27735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 463 IncrementalHoareTripleChecker+Valid, 27272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-01-31 19:57:33,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 430 Invalid, 27735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [463 Valid, 27272 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-01-31 19:57:33,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2022-01-31 19:57:34,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 579. [2022-01-31 19:57:34,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 431 states have (on average 1.0069605568445477) internal successors, (434), 433 states have internal predecessors, (434), 109 states have call successors, (109), 39 states have call predecessors, (109), 38 states have return successors, (108), 106 states have call predecessors, (108), 108 states have call successors, (108) [2022-01-31 19:57:34,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 651 transitions. [2022-01-31 19:57:34,302 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 651 transitions. Word has length 577 [2022-01-31 19:57:34,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:57:34,302 INFO L470 AbstractCegarLoop]: Abstraction has 579 states and 651 transitions. [2022-01-31 19:57:34,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 81 states have (on average 2.802469135802469) internal successors, (227), 79 states have internal predecessors, (227), 71 states have call successors, (74), 3 states have call predecessors, (74), 2 states have return successors, (72), 71 states have call predecessors, (72), 70 states have call successors, (72) [2022-01-31 19:57:34,302 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 651 transitions. [2022-01-31 19:57:34,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2022-01-31 19:57:34,305 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:57:34,305 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 37, 36, 36, 36, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:57:34,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2022-01-31 19:57:34,305 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:57:34,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:57:34,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1797898265, now seen corresponding path program 134 times [2022-01-31 19:57:34,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:57:34,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094383683] [2022-01-31 19:57:34,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:57:34,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:57:34,308 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:57:34,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:57:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:57:35,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:57:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:57:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:57:35,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:57:35,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:57:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:57:35,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:57:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:57:35,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:57:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:57:35,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:57:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:57:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:57:35,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:57:35,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:57:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:57:35,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:57:35,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:57:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:57:35,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:57:35,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:57:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:57:35,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:57:35,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:57:35,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:57:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:57:35,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:57:35,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:57:35,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:57:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:57:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:57:35,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 19:57:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 19:57:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 19:57:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 19:57:35,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 19:57:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:57:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:57:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:57:35,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:57:35,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:57:35,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:57:35,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:57:35,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:57:35,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:57:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:57:35,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:57:35,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:57:35,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:57:35,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:57:35,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:57:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:57:35,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:57:35,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:57:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:57:35,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:57:35,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:57:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 19:57:35,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 19:57:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 19:57:35,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 19:57:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 19:57:35,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-01-31 19:57:35,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-01-31 19:57:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2022-01-31 19:57:35,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2022-01-31 19:57:35,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2022-01-31 19:57:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2022-01-31 19:57:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2022-01-31 19:57:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2022-01-31 19:57:35,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2022-01-31 19:57:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-01-31 19:57:35,838 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:57:35,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094383683] [2022-01-31 19:57:35,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2094383683] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:57:35,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:57:35,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76 [2022-01-31 19:57:35,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041271655] [2022-01-31 19:57:35,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:57:35,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-01-31 19:57:35,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:57:35,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-01-31 19:57:35,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1411, Invalid=4289, Unknown=0, NotChecked=0, Total=5700 [2022-01-31 19:57:35,840 INFO L87 Difference]: Start difference. First operand 579 states and 651 transitions. Second operand has 76 states, 76 states have (on average 2.986842105263158) internal successors, (227), 75 states have internal predecessors, (227), 72 states have call successors, (75), 3 states have call predecessors, (75), 1 states have return successors, (73), 71 states have call predecessors, (73), 71 states have call successors, (73) [2022-01-31 19:57:38,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:57:38,937 INFO L93 Difference]: Finished difference Result 609 states and 685 transitions. [2022-01-31 19:57:38,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-31 19:57:38,937 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.986842105263158) internal successors, (227), 75 states have internal predecessors, (227), 72 states have call successors, (75), 3 states have call predecessors, (75), 1 states have return successors, (73), 71 states have call predecessors, (73), 71 states have call successors, (73) Word has length 585 [2022-01-31 19:57:38,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:57:38,939 INFO L225 Difference]: With dead ends: 609 [2022-01-31 19:57:38,939 INFO L226 Difference]: Without dead ends: 453 [2022-01-31 19:57:38,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5918 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=4961, Invalid=17091, Unknown=0, NotChecked=0, Total=22052 [2022-01-31 19:57:38,940 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 865 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 2623 mSolverCounterSat, 964 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 3587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 964 IncrementalHoareTripleChecker+Valid, 2623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:57:38,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [869 Valid, 147 Invalid, 3587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [964 Valid, 2623 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 19:57:38,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-01-31 19:57:39,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 440. [2022-01-31 19:57:39,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 327 states have (on average 1.0061162079510704) internal successors, (329), 328 states have internal predecessors, (329), 75 states have call successors, (75), 38 states have call predecessors, (75), 37 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) [2022-01-31 19:57:39,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 478 transitions. [2022-01-31 19:57:39,359 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 478 transitions. Word has length 585 [2022-01-31 19:57:39,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:57:39,360 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 478 transitions. [2022-01-31 19:57:39,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 2.986842105263158) internal successors, (227), 75 states have internal predecessors, (227), 72 states have call successors, (75), 3 states have call predecessors, (75), 1 states have return successors, (73), 71 states have call predecessors, (73), 71 states have call successors, (73) [2022-01-31 19:57:39,360 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 478 transitions. [2022-01-31 19:57:39,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2022-01-31 19:57:39,362 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:57:39,362 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 36, 36, 36, 36, 36, 35, 35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:57:39,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2022-01-31 19:57:39,362 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:57:39,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:57:39,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1268818328, now seen corresponding path program 135 times [2022-01-31 19:57:39,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:57:39,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278771030] [2022-01-31 19:57:39,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:57:39,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:57:39,366 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:57:39,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:57:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:57:41,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:57:41,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:57:41,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:57:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:57:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:57:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:57:41,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:57:41,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:57:41,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:57:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:57:41,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:57:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:57:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:57:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:57:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:57:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:57:41,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:57:41,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:57:41,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:57:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:57:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:57:41,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:57:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:57:41,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:57:41,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:57:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:57:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:57:41,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:57:41,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:57:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:57:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:57:41,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 19:57:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 19:57:41,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 19:57:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 19:57:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 19:57:41,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 19:57:41,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:57:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:57:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:57:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:57:41,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:57:41,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:57:41,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:57:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:57:41,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:57:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:57:41,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:57:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:57:41,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:57:41,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:57:41,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:57:41,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:57:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:57:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:57:41,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:57:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:57:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 19:57:41,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 19:57:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 19:57:41,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 19:57:41,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 19:57:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-01-31 19:57:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-01-31 19:57:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2022-01-31 19:57:41,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2022-01-31 19:57:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2022-01-31 19:57:41,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2022-01-31 19:57:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2022-01-31 19:57:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2022-01-31 19:57:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2022-01-31 19:57:41,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 108 proven. 108 refuted. 0 times theorem prover too weak. 2596 trivial. 0 not checked. [2022-01-31 19:57:41,464 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:57:41,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278771030] [2022-01-31 19:57:41,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [278771030] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:57:41,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:57:41,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [83] imperfect sequences [] total 83 [2022-01-31 19:57:41,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448701482] [2022-01-31 19:57:41,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:57:41,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-01-31 19:57:41,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:57:41,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-01-31 19:57:41,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=6603, Unknown=0, NotChecked=0, Total=6806 [2022-01-31 19:57:41,466 INFO L87 Difference]: Start difference. First operand 440 states and 478 transitions. Second operand has 83 states, 82 states have (on average 2.8048780487804876) internal successors, (230), 79 states have internal predecessors, (230), 72 states have call successors, (75), 3 states have call predecessors, (75), 2 states have return successors, (73), 72 states have call predecessors, (73), 71 states have call successors, (73) [2022-01-31 19:57:55,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:57:55,638 INFO L93 Difference]: Finished difference Result 607 states and 685 transitions. [2022-01-31 19:57:55,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-31 19:57:55,638 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 82 states have (on average 2.8048780487804876) internal successors, (230), 79 states have internal predecessors, (230), 72 states have call successors, (75), 3 states have call predecessors, (75), 2 states have return successors, (73), 72 states have call predecessors, (73), 71 states have call successors, (73) Word has length 585 [2022-01-31 19:57:55,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:57:55,640 INFO L225 Difference]: With dead ends: 607 [2022-01-31 19:57:55,640 INFO L226 Difference]: Without dead ends: 605 [2022-01-31 19:57:55,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4970 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=910, Invalid=25822, Unknown=0, NotChecked=0, Total=26732 [2022-01-31 19:57:55,641 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 760 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 28893 mSolverCounterSat, 843 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 29736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 843 IncrementalHoareTripleChecker+Valid, 28893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-01-31 19:57:55,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [762 Valid, 308 Invalid, 29736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [843 Valid, 28893 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2022-01-31 19:57:55,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2022-01-31 19:57:56,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 587. [2022-01-31 19:57:56,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 437 states have (on average 1.0068649885583525) internal successors, (440), 439 states have internal predecessors, (440), 111 states have call successors, (111), 39 states have call predecessors, (111), 38 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2022-01-31 19:57:56,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 661 transitions. [2022-01-31 19:57:56,367 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 661 transitions. Word has length 585 [2022-01-31 19:57:56,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:57:56,367 INFO L470 AbstractCegarLoop]: Abstraction has 587 states and 661 transitions. [2022-01-31 19:57:56,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 82 states have (on average 2.8048780487804876) internal successors, (230), 79 states have internal predecessors, (230), 72 states have call successors, (75), 3 states have call predecessors, (75), 2 states have return successors, (73), 72 states have call predecessors, (73), 71 states have call successors, (73) [2022-01-31 19:57:56,367 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 661 transitions. [2022-01-31 19:57:56,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2022-01-31 19:57:56,370 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:57:56,370 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 36, 36, 36, 36, 36, 36, 36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:57:56,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2022-01-31 19:57:56,370 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:57:56,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:57:56,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1241788982, now seen corresponding path program 136 times [2022-01-31 19:57:56,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:57:56,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1110829394] [2022-01-31 19:57:56,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:57:56,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:57:56,373 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:57:56,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:57:58,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:57:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:57:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:57:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:57:58,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:57:58,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:57:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:57:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:57:58,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:57:58,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:57:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:57:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:57:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:57:58,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:57:58,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:57:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:57:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:57:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:57:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:57:58,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:57:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:57:58,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:57:58,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:57:58,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:57:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:57:58,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:57:58,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:57:58,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:57:58,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:57:58,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:57:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:57:58,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:57:58,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 19:57:58,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 19:57:58,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 19:57:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 19:57:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 19:57:58,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 19:57:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:57:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:57:58,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:57:58,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:57:58,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:57:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:57:58,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:57:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:57:58,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:57:58,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:57:58,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:57:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:57:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:57:58,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:57:58,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:57:58,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:57:58,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:57:58,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:57:58,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:57:58,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:57:58,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 19:57:58,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 19:57:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 19:57:58,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 19:57:58,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 19:57:58,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-01-31 19:57:58,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-01-31 19:57:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2022-01-31 19:57:58,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2022-01-31 19:57:58,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2022-01-31 19:57:58,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2022-01-31 19:57:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2022-01-31 19:57:58,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2022-01-31 19:57:58,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2022-01-31 19:57:58,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 581 [2022-01-31 19:57:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 111 proven. 105 refuted. 0 times theorem prover too weak. 2596 trivial. 0 not checked. [2022-01-31 19:57:58,562 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:57:58,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1110829394] [2022-01-31 19:57:58,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1110829394] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:57:58,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:57:58,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84 [2022-01-31 19:57:58,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180873052] [2022-01-31 19:57:58,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:57:58,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-01-31 19:57:58,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:57:58,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-01-31 19:57:58,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=6768, Unknown=0, NotChecked=0, Total=6972 [2022-01-31 19:57:58,563 INFO L87 Difference]: Start difference. First operand 587 states and 661 transitions. Second operand has 84 states, 83 states have (on average 2.8072289156626504) internal successors, (233), 80 states have internal predecessors, (233), 73 states have call successors, (76), 3 states have call predecessors, (76), 2 states have return successors, (74), 73 states have call predecessors, (74), 72 states have call successors, (74) [2022-01-31 19:58:12,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:58:12,768 INFO L93 Difference]: Finished difference Result 615 states and 693 transitions. [2022-01-31 19:58:12,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-01-31 19:58:12,768 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 2.8072289156626504) internal successors, (233), 80 states have internal predecessors, (233), 73 states have call successors, (76), 3 states have call predecessors, (76), 2 states have return successors, (74), 73 states have call predecessors, (74), 72 states have call successors, (74) Word has length 593 [2022-01-31 19:58:12,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:58:12,770 INFO L225 Difference]: With dead ends: 615 [2022-01-31 19:58:12,770 INFO L226 Difference]: Without dead ends: 613 [2022-01-31 19:58:12,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5095 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=851, Invalid=26539, Unknown=0, NotChecked=0, Total=27390 [2022-01-31 19:58:12,771 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 683 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 30665 mSolverCounterSat, 761 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 31426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 761 IncrementalHoareTripleChecker+Valid, 30665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-01-31 19:58:12,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [685 Valid, 340 Invalid, 31426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [761 Valid, 30665 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2022-01-31 19:58:12,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2022-01-31 19:58:13,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 595. [2022-01-31 19:58:13,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 443 states have (on average 1.0067720090293453) internal successors, (446), 445 states have internal predecessors, (446), 112 states have call successors, (112), 40 states have call predecessors, (112), 39 states have return successors, (111), 109 states have call predecessors, (111), 111 states have call successors, (111) [2022-01-31 19:58:13,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 669 transitions. [2022-01-31 19:58:13,504 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 669 transitions. Word has length 593 [2022-01-31 19:58:13,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:58:13,504 INFO L470 AbstractCegarLoop]: Abstraction has 595 states and 669 transitions. [2022-01-31 19:58:13,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 83 states have (on average 2.8072289156626504) internal successors, (233), 80 states have internal predecessors, (233), 73 states have call successors, (76), 3 states have call predecessors, (76), 2 states have return successors, (74), 73 states have call predecessors, (74), 72 states have call successors, (74) [2022-01-31 19:58:13,505 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 669 transitions. [2022-01-31 19:58:13,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2022-01-31 19:58:13,507 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:58:13,507 INFO L514 BasicCegarLoop]: trace histogram [39, 39, 39, 37, 37, 37, 37, 37, 35, 35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:58:13,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2022-01-31 19:58:13,507 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:58:13,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:58:13,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1770868919, now seen corresponding path program 137 times [2022-01-31 19:58:13,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:58:13,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047799572] [2022-01-31 19:58:13,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:58:13,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:58:13,511 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:58:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:58:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:58:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:58:15,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:58:15,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:58:15,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:58:15,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:58:15,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:58:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:58:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:58:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:58:15,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:58:15,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:58:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:58:15,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:58:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:58:15,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:58:15,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:58:15,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:58:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:58:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:58:15,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:58:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:58:15,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:58:15,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:58:15,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:58:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:58:15,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:58:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:58:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:58:15,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:58:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:58:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:58:15,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 19:58:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 19:58:15,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 19:58:15,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 19:58:15,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 19:58:15,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 19:58:15,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-01-31 19:58:15,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:58:15,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:58:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:58:15,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:58:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:58:15,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:58:15,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:58:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:58:15,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:58:15,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:58:15,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:58:15,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:58:15,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:58:15,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:58:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:58:15,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:58:15,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:58:15,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:58:15,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:58:15,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 19:58:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 19:58:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 19:58:15,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 19:58:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 19:58:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-01-31 19:58:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-01-31 19:58:15,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2022-01-31 19:58:15,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2022-01-31 19:58:15,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2022-01-31 19:58:15,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2022-01-31 19:58:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2022-01-31 19:58:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2022-01-31 19:58:15,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2022-01-31 19:58:15,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 581 [2022-01-31 19:58:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:15,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 108 proven. 114 refuted. 0 times theorem prover too weak. 2742 trivial. 0 not checked. [2022-01-31 19:58:15,468 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:58:15,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047799572] [2022-01-31 19:58:15,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2047799572] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:58:15,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:58:15,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84 [2022-01-31 19:58:15,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947805438] [2022-01-31 19:58:15,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:58:15,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-01-31 19:58:15,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:58:15,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-01-31 19:58:15,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=6765, Unknown=0, NotChecked=0, Total=6972 [2022-01-31 19:58:15,470 INFO L87 Difference]: Start difference. First operand 595 states and 669 transitions. Second operand has 84 states, 83 states have (on average 2.8072289156626504) internal successors, (233), 80 states have internal predecessors, (233), 73 states have call successors, (76), 3 states have call predecessors, (76), 2 states have return successors, (74), 73 states have call predecessors, (74), 72 states have call successors, (74) [2022-01-31 19:58:24,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:58:24,810 INFO L93 Difference]: Finished difference Result 607 states and 681 transitions. [2022-01-31 19:58:24,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-01-31 19:58:24,811 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 2.8072289156626504) internal successors, (233), 80 states have internal predecessors, (233), 73 states have call successors, (76), 3 states have call predecessors, (76), 2 states have return successors, (74), 73 states have call predecessors, (74), 72 states have call successors, (74) Word has length 593 [2022-01-31 19:58:24,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:58:24,812 INFO L225 Difference]: With dead ends: 607 [2022-01-31 19:58:24,812 INFO L226 Difference]: Without dead ends: 605 [2022-01-31 19:58:24,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5002 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=837, Invalid=25895, Unknown=0, NotChecked=0, Total=26732 [2022-01-31 19:58:24,813 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 431 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 27340 mSolverCounterSat, 493 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 27833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 493 IncrementalHoareTripleChecker+Valid, 27340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:58:24,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 378 Invalid, 27833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [493 Valid, 27340 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-01-31 19:58:24,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2022-01-31 19:58:25,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 595. [2022-01-31 19:58:25,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 443 states have (on average 1.0067720090293453) internal successors, (446), 445 states have internal predecessors, (446), 112 states have call successors, (112), 40 states have call predecessors, (112), 39 states have return successors, (111), 109 states have call predecessors, (111), 111 states have call successors, (111) [2022-01-31 19:58:25,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 669 transitions. [2022-01-31 19:58:25,541 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 669 transitions. Word has length 593 [2022-01-31 19:58:25,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:58:25,542 INFO L470 AbstractCegarLoop]: Abstraction has 595 states and 669 transitions. [2022-01-31 19:58:25,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 83 states have (on average 2.8072289156626504) internal successors, (233), 80 states have internal predecessors, (233), 73 states have call successors, (76), 3 states have call predecessors, (76), 2 states have return successors, (74), 73 states have call predecessors, (74), 72 states have call successors, (74) [2022-01-31 19:58:25,542 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 669 transitions. [2022-01-31 19:58:25,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2022-01-31 19:58:25,544 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:58:25,544 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:58:25,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2022-01-31 19:58:25,544 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:58:25,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:58:25,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1304995836, now seen corresponding path program 138 times [2022-01-31 19:58:25,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:58:25,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187622855] [2022-01-31 19:58:25,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:58:25,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:58:25,548 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:58:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:58:26,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:58:26,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:58:26,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:58:26,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:58:26,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:58:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:58:26,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:58:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:58:26,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:58:26,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:58:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:58:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:58:26,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:58:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:58:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:58:26,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:58:26,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:58:26,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:58:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:58:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:58:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:58:26,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:58:26,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:58:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:58:26,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:58:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:58:26,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:58:26,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:58:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:58:26,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:58:26,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:58:26,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:58:26,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 19:58:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 19:58:26,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 19:58:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 19:58:26,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 19:58:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 19:58:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:58:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:58:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:58:26,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:58:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:58:26,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:58:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:58:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:58:26,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:58:26,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:58:26,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:58:26,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:58:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:58:26,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:58:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:58:26,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:58:26,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:58:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:58:26,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:58:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:58:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 19:58:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 19:58:26,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 19:58:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 19:58:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 19:58:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-01-31 19:58:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-01-31 19:58:26,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2022-01-31 19:58:26,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2022-01-31 19:58:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2022-01-31 19:58:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2022-01-31 19:58:26,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2022-01-31 19:58:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2022-01-31 19:58:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2022-01-31 19:58:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 581 [2022-01-31 19:58:26,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2022-01-31 19:58:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2022-01-31 19:58:26,926 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:58:26,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187622855] [2022-01-31 19:58:26,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [187622855] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:58:26,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:58:26,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78 [2022-01-31 19:58:26,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216764126] [2022-01-31 19:58:26,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:58:26,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-01-31 19:58:26,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:58:26,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-01-31 19:58:26,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=4519, Unknown=0, NotChecked=0, Total=6006 [2022-01-31 19:58:26,928 INFO L87 Difference]: Start difference. First operand 595 states and 669 transitions. Second operand has 78 states, 78 states have (on average 2.9871794871794872) internal successors, (233), 77 states have internal predecessors, (233), 74 states have call successors, (77), 3 states have call predecessors, (77), 1 states have return successors, (75), 73 states have call predecessors, (75), 73 states have call successors, (75) [2022-01-31 19:58:29,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:58:29,968 INFO L93 Difference]: Finished difference Result 625 states and 703 transitions. [2022-01-31 19:58:29,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-01-31 19:58:29,968 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 2.9871794871794872) internal successors, (233), 77 states have internal predecessors, (233), 74 states have call successors, (77), 3 states have call predecessors, (77), 1 states have return successors, (75), 73 states have call predecessors, (75), 73 states have call successors, (75) Word has length 601 [2022-01-31 19:58:29,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:58:29,970 INFO L225 Difference]: With dead ends: 625 [2022-01-31 19:58:29,970 INFO L226 Difference]: Without dead ends: 465 [2022-01-31 19:58:29,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6249 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=5228, Invalid=18028, Unknown=0, NotChecked=0, Total=23256 [2022-01-31 19:58:29,971 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 759 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 2701 mSolverCounterSat, 861 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 3562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 861 IncrementalHoareTripleChecker+Valid, 2701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:58:29,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [763 Valid, 144 Invalid, 3562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [861 Valid, 2701 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 19:58:29,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2022-01-31 19:58:30,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 452. [2022-01-31 19:58:30,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 336 states have (on average 1.005952380952381) internal successors, (338), 337 states have internal predecessors, (338), 77 states have call successors, (77), 39 states have call predecessors, (77), 38 states have return successors, (76), 75 states have call predecessors, (76), 76 states have call successors, (76) [2022-01-31 19:58:30,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 491 transitions. [2022-01-31 19:58:30,397 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 491 transitions. Word has length 601 [2022-01-31 19:58:30,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:58:30,397 INFO L470 AbstractCegarLoop]: Abstraction has 452 states and 491 transitions. [2022-01-31 19:58:30,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 2.9871794871794872) internal successors, (233), 77 states have internal predecessors, (233), 74 states have call successors, (77), 3 states have call predecessors, (77), 1 states have return successors, (75), 73 states have call predecessors, (75), 73 states have call successors, (75) [2022-01-31 19:58:30,398 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 491 transitions. [2022-01-31 19:58:30,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2022-01-31 19:58:30,400 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:58:30,400 INFO L514 BasicCegarLoop]: trace histogram [39, 39, 39, 37, 37, 37, 37, 37, 36, 36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:58:30,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2022-01-31 19:58:30,400 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:58:30,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:58:30,400 INFO L85 PathProgramCache]: Analyzing trace with hash -197237371, now seen corresponding path program 139 times [2022-01-31 19:58:30,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:58:30,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426662126] [2022-01-31 19:58:30,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:58:30,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:58:30,404 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:58:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:58:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:58:32,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:58:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:58:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:58:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:58:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:58:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:58:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:58:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:58:32,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:58:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:58:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:58:32,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:58:32,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:58:32,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:58:32,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:58:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:58:32,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:58:32,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:58:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:58:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:58:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:58:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:58:32,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:58:32,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:58:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:58:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:58:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:58:32,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:58:32,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:58:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:58:32,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:58:32,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 19:58:32,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 19:58:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 19:58:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 19:58:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 19:58:32,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 19:58:32,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-01-31 19:58:32,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:58:32,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:58:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:58:32,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:58:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:58:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:58:32,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:58:32,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:58:32,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:58:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:58:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:58:32,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:58:32,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:58:32,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:58:32,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:58:32,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:58:32,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:58:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:58:32,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:58:32,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 19:58:32,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 19:58:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 19:58:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 19:58:32,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 19:58:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-01-31 19:58:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-01-31 19:58:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2022-01-31 19:58:32,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2022-01-31 19:58:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2022-01-31 19:58:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2022-01-31 19:58:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2022-01-31 19:58:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2022-01-31 19:58:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2022-01-31 19:58:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 581 [2022-01-31 19:58:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2022-01-31 19:58:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 111 proven. 111 refuted. 0 times theorem prover too weak. 2742 trivial. 0 not checked. [2022-01-31 19:58:32,420 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:58:32,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426662126] [2022-01-31 19:58:32,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1426662126] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:58:32,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:58:32,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [86] imperfect sequences [] total 86 [2022-01-31 19:58:32,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231667735] [2022-01-31 19:58:32,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:58:32,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-01-31 19:58:32,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:58:32,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-01-31 19:58:32,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=7099, Unknown=0, NotChecked=0, Total=7310 [2022-01-31 19:58:32,422 INFO L87 Difference]: Start difference. First operand 452 states and 491 transitions. Second operand has 86 states, 84 states have (on average 2.8095238095238093) internal successors, (236), 82 states have internal predecessors, (236), 74 states have call successors, (77), 3 states have call predecessors, (77), 2 states have return successors, (75), 74 states have call predecessors, (75), 73 states have call successors, (75) [2022-01-31 19:58:43,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:58:43,504 INFO L93 Difference]: Finished difference Result 623 states and 703 transitions. [2022-01-31 19:58:43,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-01-31 19:58:43,504 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 84 states have (on average 2.8095238095238093) internal successors, (236), 82 states have internal predecessors, (236), 74 states have call successors, (77), 3 states have call predecessors, (77), 2 states have return successors, (75), 74 states have call predecessors, (75), 73 states have call successors, (75) Word has length 601 [2022-01-31 19:58:43,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:58:43,505 INFO L225 Difference]: With dead ends: 623 [2022-01-31 19:58:43,506 INFO L226 Difference]: Without dead ends: 621 [2022-01-31 19:58:43,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5300 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=941, Invalid=27451, Unknown=0, NotChecked=0, Total=28392 [2022-01-31 19:58:43,507 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 686 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 31939 mSolverCounterSat, 774 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 32713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 774 IncrementalHoareTripleChecker+Valid, 31939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-01-31 19:58:43,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [688 Valid, 353 Invalid, 32713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [774 Valid, 31939 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-01-31 19:58:43,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2022-01-31 19:58:44,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 603. [2022-01-31 19:58:44,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 449 states have (on average 1.0066815144766148) internal successors, (452), 451 states have internal predecessors, (452), 114 states have call successors, (114), 40 states have call predecessors, (114), 39 states have return successors, (113), 111 states have call predecessors, (113), 113 states have call successors, (113) [2022-01-31 19:58:44,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 679 transitions. [2022-01-31 19:58:44,295 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 679 transitions. Word has length 601 [2022-01-31 19:58:44,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:58:44,296 INFO L470 AbstractCegarLoop]: Abstraction has 603 states and 679 transitions. [2022-01-31 19:58:44,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 84 states have (on average 2.8095238095238093) internal successors, (236), 82 states have internal predecessors, (236), 74 states have call successors, (77), 3 states have call predecessors, (77), 2 states have return successors, (75), 74 states have call predecessors, (75), 73 states have call successors, (75) [2022-01-31 19:58:44,296 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 679 transitions. [2022-01-31 19:58:44,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2022-01-31 19:58:44,298 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:58:44,298 INFO L514 BasicCegarLoop]: trace histogram [39, 39, 39, 37, 37, 37, 37, 37, 37, 37, 37, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:58:44,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2022-01-31 19:58:44,298 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:58:44,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:58:44,299 INFO L85 PathProgramCache]: Analyzing trace with hash -441660333, now seen corresponding path program 140 times [2022-01-31 19:58:44,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:58:44,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911830826] [2022-01-31 19:58:44,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:58:44,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:58:44,302 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:58:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:58:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:58:46,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:58:46,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:58:46,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:58:46,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:58:46,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:58:46,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:58:46,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:58:46,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:58:46,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:58:46,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:58:46,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:58:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:58:46,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:58:46,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:58:46,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:58:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:58:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:58:46,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:58:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:58:46,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:58:46,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:58:46,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:58:46,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:58:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:58:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:58:46,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:58:46,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:58:46,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:58:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:58:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:58:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:58:46,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 19:58:46,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 19:58:46,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 19:58:46,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 19:58:46,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 19:58:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 19:58:46,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-01-31 19:58:46,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:58:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:58:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:58:46,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:58:46,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:58:46,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:58:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:58:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:58:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:58:46,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:58:46,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:58:46,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:58:46,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:58:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:58:46,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:58:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:58:46,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:58:46,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:58:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:58:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 19:58:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 19:58:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 19:58:46,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 19:58:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 19:58:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-01-31 19:58:46,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-01-31 19:58:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2022-01-31 19:58:46,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2022-01-31 19:58:46,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2022-01-31 19:58:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2022-01-31 19:58:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2022-01-31 19:58:46,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2022-01-31 19:58:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2022-01-31 19:58:46,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 581 [2022-01-31 19:58:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2022-01-31 19:58:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2022-01-31 19:58:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:46,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 114 proven. 108 refuted. 0 times theorem prover too weak. 2742 trivial. 0 not checked. [2022-01-31 19:58:46,139 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:58:46,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911830826] [2022-01-31 19:58:46,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [911830826] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:58:46,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:58:46,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [86] imperfect sequences [] total 86 [2022-01-31 19:58:46,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935311330] [2022-01-31 19:58:46,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:58:46,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-01-31 19:58:46,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:58:46,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-01-31 19:58:46,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=7101, Unknown=0, NotChecked=0, Total=7310 [2022-01-31 19:58:46,141 INFO L87 Difference]: Start difference. First operand 603 states and 679 transitions. Second operand has 86 states, 85 states have (on average 2.8117647058823527) internal successors, (239), 82 states have internal predecessors, (239), 75 states have call successors, (78), 3 states have call predecessors, (78), 2 states have return successors, (76), 75 states have call predecessors, (76), 74 states have call successors, (76) [2022-01-31 19:58:58,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:58:58,574 INFO L93 Difference]: Finished difference Result 631 states and 711 transitions. [2022-01-31 19:58:58,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-01-31 19:58:58,575 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 85 states have (on average 2.8117647058823527) internal successors, (239), 82 states have internal predecessors, (239), 75 states have call successors, (78), 3 states have call predecessors, (78), 2 states have return successors, (76), 75 states have call predecessors, (76), 74 states have call successors, (76) Word has length 609 [2022-01-31 19:58:58,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:58:58,576 INFO L225 Difference]: With dead ends: 631 [2022-01-31 19:58:58,576 INFO L226 Difference]: Without dead ends: 629 [2022-01-31 19:58:58,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5346 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=872, Invalid=27858, Unknown=0, NotChecked=0, Total=28730 [2022-01-31 19:58:58,578 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 588 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 34514 mSolverCounterSat, 673 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 35187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 673 IncrementalHoareTripleChecker+Valid, 34514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-01-31 19:58:58,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [590 Valid, 483 Invalid, 35187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [673 Valid, 34514 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2022-01-31 19:58:58,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2022-01-31 19:58:59,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 611. [2022-01-31 19:58:59,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 455 states have (on average 1.0065934065934066) internal successors, (458), 457 states have internal predecessors, (458), 115 states have call successors, (115), 41 states have call predecessors, (115), 40 states have return successors, (114), 112 states have call predecessors, (114), 114 states have call successors, (114) [2022-01-31 19:58:59,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 687 transitions. [2022-01-31 19:58:59,366 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 687 transitions. Word has length 609 [2022-01-31 19:58:59,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:58:59,367 INFO L470 AbstractCegarLoop]: Abstraction has 611 states and 687 transitions. [2022-01-31 19:58:59,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 85 states have (on average 2.8117647058823527) internal successors, (239), 82 states have internal predecessors, (239), 75 states have call successors, (78), 3 states have call predecessors, (78), 2 states have return successors, (76), 75 states have call predecessors, (76), 74 states have call successors, (76) [2022-01-31 19:58:59,367 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 687 transitions. [2022-01-31 19:58:59,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2022-01-31 19:58:59,369 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:58:59,369 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 40, 38, 38, 38, 38, 38, 36, 36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:58:59,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2022-01-31 19:58:59,370 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:58:59,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:58:59,370 INFO L85 PathProgramCache]: Analyzing trace with hash 666098132, now seen corresponding path program 141 times [2022-01-31 19:58:59,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:58:59,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882309380] [2022-01-31 19:58:59,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:58:59,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:58:59,373 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:58:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:59:01,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:59:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:59:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:59:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:59:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:59:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:59:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:59:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:59:01,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:59:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:59:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:59:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:59:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:59:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:59:01,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:59:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:59:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:59:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:59:01,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:59:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:59:01,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:59:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:59:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:59:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:59:01,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:59:01,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:59:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:59:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:59:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:59:01,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:59:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:59:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:59:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 19:59:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 19:59:01,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 19:59:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 19:59:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 19:59:01,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 19:59:01,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-01-31 19:59:01,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-01-31 19:59:01,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:59:01,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:59:01,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:59:01,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:59:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:59:01,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:59:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:59:01,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:59:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:59:01,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:59:01,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:59:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:59:01,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:59:01,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:59:01,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:59:01,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:59:01,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:59:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:59:01,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 19:59:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 19:59:01,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 19:59:01,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 19:59:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 19:59:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-01-31 19:59:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-01-31 19:59:01,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2022-01-31 19:59:01,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2022-01-31 19:59:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2022-01-31 19:59:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2022-01-31 19:59:01,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2022-01-31 19:59:01,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2022-01-31 19:59:01,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2022-01-31 19:59:01,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 581 [2022-01-31 19:59:01,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2022-01-31 19:59:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2022-01-31 19:59:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:01,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 111 proven. 117 refuted. 0 times theorem prover too weak. 2892 trivial. 0 not checked. [2022-01-31 19:59:01,531 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:59:01,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882309380] [2022-01-31 19:59:01,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1882309380] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:59:01,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:59:01,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [86] imperfect sequences [] total 86 [2022-01-31 19:59:01,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987105839] [2022-01-31 19:59:01,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:59:01,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-01-31 19:59:01,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:59:01,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-01-31 19:59:01,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=7098, Unknown=0, NotChecked=0, Total=7310 [2022-01-31 19:59:01,533 INFO L87 Difference]: Start difference. First operand 611 states and 687 transitions. Second operand has 86 states, 85 states have (on average 2.8117647058823527) internal successors, (239), 82 states have internal predecessors, (239), 75 states have call successors, (78), 3 states have call predecessors, (78), 2 states have return successors, (76), 75 states have call predecessors, (76), 74 states have call successors, (76) [2022-01-31 19:59:14,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:59:14,240 INFO L93 Difference]: Finished difference Result 623 states and 699 transitions. [2022-01-31 19:59:14,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-01-31 19:59:14,240 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 85 states have (on average 2.8117647058823527) internal successors, (239), 82 states have internal predecessors, (239), 75 states have call successors, (78), 3 states have call predecessors, (78), 2 states have return successors, (76), 75 states have call predecessors, (76), 74 states have call successors, (76) Word has length 609 [2022-01-31 19:59:14,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:59:14,242 INFO L225 Difference]: With dead ends: 623 [2022-01-31 19:59:14,242 INFO L226 Difference]: Without dead ends: 621 [2022-01-31 19:59:14,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5251 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=858, Invalid=27198, Unknown=0, NotChecked=0, Total=28056 [2022-01-31 19:59:14,243 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 401 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 30646 mSolverCounterSat, 467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 31113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 467 IncrementalHoareTripleChecker+Valid, 30646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-01-31 19:59:14,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [403 Valid, 490 Invalid, 31113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [467 Valid, 30646 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2022-01-31 19:59:14,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2022-01-31 19:59:15,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 611. [2022-01-31 19:59:15,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 455 states have (on average 1.0065934065934066) internal successors, (458), 457 states have internal predecessors, (458), 115 states have call successors, (115), 41 states have call predecessors, (115), 40 states have return successors, (114), 112 states have call predecessors, (114), 114 states have call successors, (114) [2022-01-31 19:59:15,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 687 transitions. [2022-01-31 19:59:15,047 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 687 transitions. Word has length 609 [2022-01-31 19:59:15,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:59:15,047 INFO L470 AbstractCegarLoop]: Abstraction has 611 states and 687 transitions. [2022-01-31 19:59:15,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 85 states have (on average 2.8117647058823527) internal successors, (239), 82 states have internal predecessors, (239), 75 states have call successors, (78), 3 states have call predecessors, (78), 2 states have return successors, (76), 75 states have call predecessors, (76), 74 states have call successors, (76) [2022-01-31 19:59:15,048 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 687 transitions. [2022-01-31 19:59:15,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2022-01-31 19:59:15,050 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:59:15,050 INFO L514 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:59:15,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2022-01-31 19:59:15,050 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:59:15,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:59:15,050 INFO L85 PathProgramCache]: Analyzing trace with hash 476480801, now seen corresponding path program 142 times [2022-01-31 19:59:15,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:59:15,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583081793] [2022-01-31 19:59:15,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:59:15,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:59:15,054 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:59:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:59:16,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:59:16,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:59:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:59:16,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:59:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:59:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:59:16,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:59:16,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:59:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:59:16,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:59:16,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:59:16,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:59:16,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:59:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:59:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:59:16,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:59:16,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:59:16,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:59:16,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:59:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:59:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:59:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:59:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:59:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:59:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:59:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:59:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:59:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:59:16,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:59:16,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:59:16,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:59:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:59:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 19:59:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 19:59:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 19:59:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 19:59:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 19:59:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 19:59:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-01-31 19:59:16,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:59:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:59:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:59:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:59:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:59:16,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:59:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:59:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:59:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:59:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:59:16,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:59:16,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:59:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:59:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:59:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:59:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:59:16,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:59:16,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:59:16,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:59:16,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 19:59:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 19:59:16,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 19:59:16,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 19:59:16,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 19:59:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-01-31 19:59:16,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-01-31 19:59:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2022-01-31 19:59:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2022-01-31 19:59:16,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2022-01-31 19:59:16,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2022-01-31 19:59:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2022-01-31 19:59:16,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2022-01-31 19:59:16,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2022-01-31 19:59:16,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 581 [2022-01-31 19:59:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2022-01-31 19:59:16,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2022-01-31 19:59:16,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 605 [2022-01-31 19:59:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:16,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-01-31 19:59:16,512 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:59:16,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583081793] [2022-01-31 19:59:16,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1583081793] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:59:16,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:59:16,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80 [2022-01-31 19:59:16,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378453555] [2022-01-31 19:59:16,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:59:16,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-01-31 19:59:16,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:59:16,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-01-31 19:59:16,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1565, Invalid=4755, Unknown=0, NotChecked=0, Total=6320 [2022-01-31 19:59:16,514 INFO L87 Difference]: Start difference. First operand 611 states and 687 transitions. Second operand has 80 states, 80 states have (on average 2.9875) internal successors, (239), 79 states have internal predecessors, (239), 76 states have call successors, (79), 3 states have call predecessors, (79), 1 states have return successors, (77), 75 states have call predecessors, (77), 75 states have call successors, (77) [2022-01-31 19:59:19,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:59:19,741 INFO L93 Difference]: Finished difference Result 641 states and 721 transitions. [2022-01-31 19:59:19,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-31 19:59:19,742 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.9875) internal successors, (239), 79 states have internal predecessors, (239), 76 states have call successors, (79), 3 states have call predecessors, (79), 1 states have return successors, (77), 75 states have call predecessors, (77), 75 states have call successors, (77) Word has length 617 [2022-01-31 19:59:19,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:59:19,743 INFO L225 Difference]: With dead ends: 641 [2022-01-31 19:59:19,743 INFO L226 Difference]: Without dead ends: 477 [2022-01-31 19:59:19,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6589 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=5502, Invalid=18990, Unknown=0, NotChecked=0, Total=24492 [2022-01-31 19:59:19,744 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 1041 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 2496 mSolverCounterSat, 1147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 3643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1147 IncrementalHoareTripleChecker+Valid, 2496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:59:19,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1045 Valid, 131 Invalid, 3643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1147 Valid, 2496 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 19:59:19,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-01-31 19:59:20,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 464. [2022-01-31 19:59:20,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 345 states have (on average 1.0057971014492753) internal successors, (347), 346 states have internal predecessors, (347), 79 states have call successors, (79), 40 states have call predecessors, (79), 39 states have return successors, (78), 77 states have call predecessors, (78), 78 states have call successors, (78) [2022-01-31 19:59:20,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 504 transitions. [2022-01-31 19:59:20,200 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 504 transitions. Word has length 617 [2022-01-31 19:59:20,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:59:20,200 INFO L470 AbstractCegarLoop]: Abstraction has 464 states and 504 transitions. [2022-01-31 19:59:20,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 2.9875) internal successors, (239), 79 states have internal predecessors, (239), 76 states have call successors, (79), 3 states have call predecessors, (79), 1 states have return successors, (77), 75 states have call predecessors, (77), 75 states have call successors, (77) [2022-01-31 19:59:20,201 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 504 transitions. [2022-01-31 19:59:20,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2022-01-31 19:59:20,203 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:59:20,203 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 40, 38, 38, 38, 38, 38, 37, 37, 37, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:59:20,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2022-01-31 19:59:20,203 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:59:20,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:59:20,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1752399454, now seen corresponding path program 143 times [2022-01-31 19:59:20,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:59:20,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909333049] [2022-01-31 19:59:20,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:59:20,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:59:20,207 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:59:20,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:59:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:59:22,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:59:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:59:22,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:59:22,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:59:22,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:59:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:59:22,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:59:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:59:22,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:59:22,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:59:22,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:59:22,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:59:22,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:59:22,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:59:22,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:59:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:59:22,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:59:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:59:22,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:59:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:59:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:59:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:59:22,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:59:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:59:22,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:59:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:59:22,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:59:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:59:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:59:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:59:22,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:59:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 19:59:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 19:59:22,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 19:59:22,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 19:59:22,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 19:59:22,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 19:59:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-01-31 19:59:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-01-31 19:59:22,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:59:22,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:59:22,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:59:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:59:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:59:22,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:59:22,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:59:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:59:22,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:59:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:59:22,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:59:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:59:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:59:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:59:22,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:59:22,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:59:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:59:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:59:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 19:59:22,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 19:59:22,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 19:59:22,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 19:59:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 19:59:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-01-31 19:59:22,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-01-31 19:59:22,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2022-01-31 19:59:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2022-01-31 19:59:22,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2022-01-31 19:59:22,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2022-01-31 19:59:22,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2022-01-31 19:59:22,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2022-01-31 19:59:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2022-01-31 19:59:22,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 581 [2022-01-31 19:59:22,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2022-01-31 19:59:22,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2022-01-31 19:59:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 605 [2022-01-31 19:59:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 114 proven. 114 refuted. 0 times theorem prover too weak. 2892 trivial. 0 not checked. [2022-01-31 19:59:22,816 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:59:22,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909333049] [2022-01-31 19:59:22,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [909333049] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:59:22,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:59:22,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [87] imperfect sequences [] total 87 [2022-01-31 19:59:22,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428030233] [2022-01-31 19:59:22,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:59:22,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-01-31 19:59:22,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:59:22,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-01-31 19:59:22,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=7269, Unknown=0, NotChecked=0, Total=7482 [2022-01-31 19:59:22,817 INFO L87 Difference]: Start difference. First operand 464 states and 504 transitions. Second operand has 87 states, 86 states have (on average 2.813953488372093) internal successors, (242), 83 states have internal predecessors, (242), 76 states have call successors, (79), 3 states have call predecessors, (79), 2 states have return successors, (77), 76 states have call predecessors, (77), 75 states have call successors, (77) [2022-01-31 19:59:36,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:59:36,713 INFO L93 Difference]: Finished difference Result 639 states and 721 transitions. [2022-01-31 19:59:36,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-31 19:59:36,714 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 86 states have (on average 2.813953488372093) internal successors, (242), 83 states have internal predecessors, (242), 76 states have call successors, (79), 3 states have call predecessors, (79), 2 states have return successors, (77), 76 states have call predecessors, (77), 75 states have call successors, (77) Word has length 617 [2022-01-31 19:59:36,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:59:36,715 INFO L225 Difference]: With dead ends: 639 [2022-01-31 19:59:36,715 INFO L226 Difference]: Without dead ends: 637 [2022-01-31 19:59:36,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5472 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=956, Invalid=28456, Unknown=0, NotChecked=0, Total=29412 [2022-01-31 19:59:36,717 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 667 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 33947 mSolverCounterSat, 758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 34705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 758 IncrementalHoareTripleChecker+Valid, 33947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-01-31 19:59:36,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [669 Valid, 400 Invalid, 34705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [758 Valid, 33947 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2022-01-31 19:59:36,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2022-01-31 19:59:37,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 619. [2022-01-31 19:59:37,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 461 states have (on average 1.0065075921908895) internal successors, (464), 463 states have internal predecessors, (464), 117 states have call successors, (117), 41 states have call predecessors, (117), 40 states have return successors, (116), 114 states have call predecessors, (116), 116 states have call successors, (116) [2022-01-31 19:59:37,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 697 transitions. [2022-01-31 19:59:37,513 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 697 transitions. Word has length 617 [2022-01-31 19:59:37,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:59:37,514 INFO L470 AbstractCegarLoop]: Abstraction has 619 states and 697 transitions. [2022-01-31 19:59:37,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 86 states have (on average 2.813953488372093) internal successors, (242), 83 states have internal predecessors, (242), 76 states have call successors, (79), 3 states have call predecessors, (79), 2 states have return successors, (77), 76 states have call predecessors, (77), 75 states have call successors, (77) [2022-01-31 19:59:37,514 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 697 transitions. [2022-01-31 19:59:37,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2022-01-31 19:59:37,516 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:59:37,516 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 40, 38, 38, 38, 38, 38, 38, 38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:59:37,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2022-01-31 19:59:37,516 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:59:37,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:59:37,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1562412176, now seen corresponding path program 144 times [2022-01-31 19:59:37,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:59:37,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811471167] [2022-01-31 19:59:37,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:59:37,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:59:37,527 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:59:37,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:39,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:59:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:39,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:59:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:39,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:59:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:59:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:59:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:59:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:59:40,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:59:40,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:59:40,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:59:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:59:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:59:40,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:59:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:59:40,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:59:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:59:40,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:59:40,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:59:40,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:59:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:59:40,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:59:40,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:59:40,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:59:40,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:59:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:59:40,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:59:40,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:59:40,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:59:40,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:59:40,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:59:40,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:59:40,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:59:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:59:40,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 19:59:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 19:59:40,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 19:59:40,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 19:59:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 19:59:40,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 19:59:40,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-01-31 19:59:40,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-01-31 19:59:40,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:59:40,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:59:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:59:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:59:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:59:40,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:59:40,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:59:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:59:40,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:59:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:59:40,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:59:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:59:40,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:59:40,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:59:40,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:59:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:59:40,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:59:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:59:40,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 19:59:40,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 19:59:40,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 19:59:40,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 19:59:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 19:59:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-01-31 19:59:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-01-31 19:59:40,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2022-01-31 19:59:40,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2022-01-31 19:59:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2022-01-31 19:59:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2022-01-31 19:59:40,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2022-01-31 19:59:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2022-01-31 19:59:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2022-01-31 19:59:40,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 581 [2022-01-31 19:59:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2022-01-31 19:59:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2022-01-31 19:59:40,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 605 [2022-01-31 19:59:40,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 613 [2022-01-31 19:59:40,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:40,145 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 117 proven. 111 refuted. 0 times theorem prover too weak. 2892 trivial. 0 not checked. [2022-01-31 19:59:40,145 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:59:40,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811471167] [2022-01-31 19:59:40,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1811471167] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:59:40,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:59:40,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [88] imperfect sequences [] total 88 [2022-01-31 19:59:40,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914676733] [2022-01-31 19:59:40,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:59:40,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-01-31 19:59:40,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:59:40,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-01-31 19:59:40,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=7442, Unknown=0, NotChecked=0, Total=7656 [2022-01-31 19:59:40,147 INFO L87 Difference]: Start difference. First operand 619 states and 697 transitions. Second operand has 88 states, 87 states have (on average 2.8160919540229883) internal successors, (245), 84 states have internal predecessors, (245), 77 states have call successors, (80), 3 states have call predecessors, (80), 2 states have return successors, (78), 77 states have call predecessors, (78), 76 states have call successors, (78) [2022-01-31 19:59:55,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:59:55,062 INFO L93 Difference]: Finished difference Result 647 states and 729 transitions. [2022-01-31 19:59:55,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-01-31 19:59:55,063 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 87 states have (on average 2.8160919540229883) internal successors, (245), 84 states have internal predecessors, (245), 77 states have call successors, (80), 3 states have call predecessors, (80), 2 states have return successors, (78), 77 states have call predecessors, (78), 76 states have call successors, (78) Word has length 625 [2022-01-31 19:59:55,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:59:55,064 INFO L225 Difference]: With dead ends: 647 [2022-01-31 19:59:55,064 INFO L226 Difference]: Without dead ends: 645 [2022-01-31 19:59:55,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5603 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=893, Invalid=29209, Unknown=0, NotChecked=0, Total=30102 [2022-01-31 19:59:55,065 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 640 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 35733 mSolverCounterSat, 724 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 36457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 724 IncrementalHoareTripleChecker+Valid, 35733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-01-31 19:59:55,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [642 Valid, 454 Invalid, 36457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [724 Valid, 35733 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2022-01-31 19:59:55,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2022-01-31 19:59:55,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 627. [2022-01-31 19:59:55,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 467 states have (on average 1.006423982869379) internal successors, (470), 469 states have internal predecessors, (470), 118 states have call successors, (118), 42 states have call predecessors, (118), 41 states have return successors, (117), 115 states have call predecessors, (117), 117 states have call successors, (117) [2022-01-31 19:59:55,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 705 transitions. [2022-01-31 19:59:55,883 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 705 transitions. Word has length 625 [2022-01-31 19:59:55,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:59:55,883 INFO L470 AbstractCegarLoop]: Abstraction has 627 states and 705 transitions. [2022-01-31 19:59:55,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 87 states have (on average 2.8160919540229883) internal successors, (245), 84 states have internal predecessors, (245), 77 states have call successors, (80), 3 states have call predecessors, (80), 2 states have return successors, (78), 77 states have call predecessors, (78), 76 states have call successors, (78) [2022-01-31 19:59:55,884 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 705 transitions. [2022-01-31 19:59:55,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2022-01-31 19:59:55,886 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:59:55,886 INFO L514 BasicCegarLoop]: trace histogram [41, 41, 41, 39, 39, 39, 39, 39, 37, 37, 37, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:59:55,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2022-01-31 19:59:55,886 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:59:55,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:59:55,886 INFO L85 PathProgramCache]: Analyzing trace with hash 503674865, now seen corresponding path program 145 times [2022-01-31 19:59:55,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:59:55,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588410824] [2022-01-31 19:59:55,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:59:55,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:59:55,890 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:59:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:59:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:59:57,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:59:57,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:59:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:59:57,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:59:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:59:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:59:57,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:59:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:59:57,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:59:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:59:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:59:57,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:59:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:59:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:59:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:59:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:59:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:59:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:59:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:59:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:59:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:59:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:59:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:59:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:59:57,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:59:57,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:59:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:59:57,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:59:57,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:59:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:59:57,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:59:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 19:59:57,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 19:59:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 19:59:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 19:59:57,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 19:59:57,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 19:59:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-01-31 19:59:57,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-01-31 19:59:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-01-31 19:59:57,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:59:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:59:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:59:57,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:59:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:57,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:59:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:58,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:59:58,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:58,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 19:59:58,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:58,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 19:59:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:58,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 19:59:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:58,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 19:59:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:58,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 19:59:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:58,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 19:59:58,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:58,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 19:59:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:58,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 19:59:58,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:58,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 19:59:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:58,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 19:59:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:58,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 19:59:58,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:58,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 19:59:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:58,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 19:59:58,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:58,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 19:59:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:58,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 19:59:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:58,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 19:59:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:58,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-01-31 19:59:58,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:58,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-01-31 19:59:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:58,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2022-01-31 19:59:58,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:58,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2022-01-31 19:59:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:58,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2022-01-31 19:59:58,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:58,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2022-01-31 19:59:58,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:58,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2022-01-31 19:59:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:58,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2022-01-31 19:59:58,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:58,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2022-01-31 19:59:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:58,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 581 [2022-01-31 19:59:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:58,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2022-01-31 19:59:58,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:58,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2022-01-31 19:59:58,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:58,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 605 [2022-01-31 19:59:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:58,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 613 [2022-01-31 19:59:58,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:58,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 114 proven. 120 refuted. 0 times theorem prover too weak. 3046 trivial. 0 not checked. [2022-01-31 19:59:58,048 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:59:58,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588410824] [2022-01-31 19:59:58,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1588410824] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:59:58,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:59:58,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [89] imperfect sequences [] total 89 [2022-01-31 19:59:58,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86582087] [2022-01-31 19:59:58,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:59:58,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-01-31 19:59:58,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:59:58,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-01-31 19:59:58,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=7612, Unknown=0, NotChecked=0, Total=7832 [2022-01-31 19:59:58,050 INFO L87 Difference]: Start difference. First operand 627 states and 705 transitions. Second operand has 89 states, 87 states have (on average 2.8160919540229883) internal successors, (245), 85 states have internal predecessors, (245), 77 states have call successors, (80), 3 states have call predecessors, (80), 2 states have return successors, (78), 77 states have call predecessors, (78), 76 states have call successors, (78) [2022-01-31 20:00:10,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:00:10,589 INFO L93 Difference]: Finished difference Result 639 states and 717 transitions. [2022-01-31 20:00:10,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-01-31 20:00:10,590 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 87 states have (on average 2.8160919540229883) internal successors, (245), 85 states have internal predecessors, (245), 77 states have call successors, (80), 3 states have call predecessors, (80), 2 states have return successors, (78), 77 states have call predecessors, (78), 76 states have call successors, (78) Word has length 625 [2022-01-31 20:00:10,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:00:10,591 INFO L225 Difference]: With dead ends: 639 [2022-01-31 20:00:10,591 INFO L226 Difference]: Without dead ends: 637 [2022-01-31 20:00:10,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5591 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=887, Invalid=28869, Unknown=0, NotChecked=0, Total=29756 [2022-01-31 20:00:10,592 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 489 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 32358 mSolverCounterSat, 557 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 32915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 557 IncrementalHoareTripleChecker+Valid, 32358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-01-31 20:00:10,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 492 Invalid, 32915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [557 Valid, 32358 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-01-31 20:00:10,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2022-01-31 20:00:11,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 627. [2022-01-31 20:00:11,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 467 states have (on average 1.006423982869379) internal successors, (470), 469 states have internal predecessors, (470), 118 states have call successors, (118), 42 states have call predecessors, (118), 41 states have return successors, (117), 115 states have call predecessors, (117), 117 states have call successors, (117) [2022-01-31 20:00:11,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 705 transitions. [2022-01-31 20:00:11,433 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 705 transitions. Word has length 625 [2022-01-31 20:00:11,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:00:11,433 INFO L470 AbstractCegarLoop]: Abstraction has 627 states and 705 transitions. [2022-01-31 20:00:11,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 87 states have (on average 2.8160919540229883) internal successors, (245), 85 states have internal predecessors, (245), 77 states have call successors, (80), 3 states have call predecessors, (80), 2 states have return successors, (78), 77 states have call predecessors, (78), 76 states have call successors, (78) [2022-01-31 20:00:11,434 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 705 transitions. [2022-01-31 20:00:11,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 634 [2022-01-31 20:00:11,436 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:00:11,436 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:00:11,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2022-01-31 20:00:11,436 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:00:11,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:00:11,437 INFO L85 PathProgramCache]: Analyzing trace with hash 456836926, now seen corresponding path program 146 times [2022-01-31 20:00:11,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:00:11,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693706084] [2022-01-31 20:00:11,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:00:11,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:00:11,440 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:00:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:00:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 20:00:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 20:00:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 20:00:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 20:00:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 20:00:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 20:00:13,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 20:00:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 20:00:13,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 20:00:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 20:00:13,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 20:00:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 20:00:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 20:00:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 20:00:13,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 20:00:13,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 20:00:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 20:00:13,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 20:00:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 20:00:13,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 20:00:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 20:00:13,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 20:00:13,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 20:00:13,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 20:00:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 20:00:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 20:00:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 20:00:13,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 20:00:13,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 20:00:13,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 20:00:13,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 20:00:13,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 20:00:13,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 20:00:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 20:00:13,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 20:00:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 20:00:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 20:00:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 20:00:13,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-01-31 20:00:13,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-01-31 20:00:13,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 20:00:13,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 20:00:13,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 20:00:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 20:00:13,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 20:00:13,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 20:00:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 20:00:13,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 20:00:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 20:00:13,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 20:00:13,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 20:00:13,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 20:00:13,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 20:00:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 20:00:13,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 20:00:13,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 20:00:13,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 20:00:13,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 20:00:13,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 20:00:13,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 20:00:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 20:00:13,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 20:00:13,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 20:00:13,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-01-31 20:00:13,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-01-31 20:00:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2022-01-31 20:00:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2022-01-31 20:00:13,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2022-01-31 20:00:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2022-01-31 20:00:13,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2022-01-31 20:00:13,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2022-01-31 20:00:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2022-01-31 20:00:13,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 581 [2022-01-31 20:00:13,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2022-01-31 20:00:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2022-01-31 20:00:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 605 [2022-01-31 20:00:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 613 [2022-01-31 20:00:13,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 621 [2022-01-31 20:00:13,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:13,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-01-31 20:00:13,164 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:00:13,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693706084] [2022-01-31 20:00:13,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [693706084] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:00:13,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:00:13,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [82] imperfect sequences [] total 82 [2022-01-31 20:00:13,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928627288] [2022-01-31 20:00:13,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:00:13,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-01-31 20:00:13,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:00:13,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-01-31 20:00:13,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1645, Invalid=4997, Unknown=0, NotChecked=0, Total=6642 [2022-01-31 20:00:13,166 INFO L87 Difference]: Start difference. First operand 627 states and 705 transitions. Second operand has 82 states, 82 states have (on average 2.9878048780487805) internal successors, (245), 81 states have internal predecessors, (245), 78 states have call successors, (81), 3 states have call predecessors, (81), 1 states have return successors, (79), 77 states have call predecessors, (79), 77 states have call successors, (79)