/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/reducercommutativity/max05-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 18:33:32,413 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 18:33:32,416 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 18:33:32,467 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 18:33:32,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 18:33:32,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 18:33:32,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 18:33:32,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 18:33:32,480 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 18:33:32,481 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 18:33:32,482 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 18:33:32,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 18:33:32,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 18:33:32,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 18:33:32,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 18:33:32,493 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 18:33:32,495 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 18:33:32,502 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 18:33:32,503 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 18:33:32,503 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 18:33:32,504 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 18:33:32,511 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 18:33:32,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 18:33:32,513 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 18:33:32,513 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 18:33:32,513 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 18:33:32,513 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 18:33:32,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 18:33:32,514 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 18:33:32,514 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 18:33:32,514 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 18:33:32,514 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 18:33:32,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 18:33:32,515 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 18:33:32,515 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 18:33:32,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 18:33:32,515 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 18:33:32,515 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 18:33:32,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 18:33:32,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 18:33:32,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 18:33:32,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 18:33:32,517 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 18:33:32,517 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 18:33:32,517 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 18:33:32,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 18:33:32,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 18:33:32,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 18:33:32,760 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 18:33:32,761 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 18:33:32,762 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/max05-1.i [2022-01-31 18:33:32,817 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a9b39428/6d9fde23b5cf4c739c3abe0ad1e12776/FLAGccdff0d4d [2022-01-31 18:33:33,225 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 18:33:33,226 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/max05-1.i [2022-01-31 18:33:33,233 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a9b39428/6d9fde23b5cf4c739c3abe0ad1e12776/FLAGccdff0d4d [2022-01-31 18:33:33,633 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a9b39428/6d9fde23b5cf4c739c3abe0ad1e12776 [2022-01-31 18:33:33,635 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 18:33:33,636 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 18:33:33,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 18:33:33,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 18:33:33,640 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 18:33:33,641 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 06:33:33" (1/1) ... [2022-01-31 18:33:33,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@541c4820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:33:33, skipping insertion in model container [2022-01-31 18:33:33,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 06:33:33" (1/1) ... [2022-01-31 18:33:33,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 18:33:33,660 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 18:33:33,879 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/max05-1.i[1284,1297] [2022-01-31 18:33:33,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 18:33:33,894 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 18:33:33,926 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/max05-1.i[1284,1297] [2022-01-31 18:33:33,927 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 18:33:33,940 INFO L208 MainTranslator]: Completed translation [2022-01-31 18:33:33,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:33:33 WrapperNode [2022-01-31 18:33:33,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 18:33:33,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 18:33:33,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 18:33:33,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 18:33:33,951 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:33:33" (1/1) ... [2022-01-31 18:33:33,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:33:33" (1/1) ... [2022-01-31 18:33:33,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:33:33" (1/1) ... [2022-01-31 18:33:33,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:33:33" (1/1) ... [2022-01-31 18:33:33,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:33:33" (1/1) ... [2022-01-31 18:33:33,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:33:33" (1/1) ... [2022-01-31 18:33:33,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:33:33" (1/1) ... [2022-01-31 18:33:33,987 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 18:33:33,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 18:33:33,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 18:33:33,988 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 18:33:33,989 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:33:33" (1/1) ... [2022-01-31 18:33:33,995 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 18:33:34,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 18:33:34,016 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 18:33:34,033 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 18:33:34,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 18:33:34,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 18:33:34,064 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 18:33:34,064 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2022-01-31 18:33:34,064 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 18:33:34,065 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 18:33:34,065 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 18:33:34,065 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-01-31 18:33:34,065 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-01-31 18:33:34,065 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 18:33:34,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 18:33:34,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 18:33:34,066 INFO L130 BoogieDeclarations]: Found specification of procedure max [2022-01-31 18:33:34,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 18:33:34,067 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 18:33:34,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 18:33:34,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 18:33:34,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 18:33:34,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 18:33:34,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 18:33:34,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 18:33:34,149 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 18:33:34,151 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 18:33:34,307 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 18:33:34,312 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 18:33:34,312 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-31 18:33:34,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 06:33:34 BoogieIcfgContainer [2022-01-31 18:33:34,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 18:33:34,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 18:33:34,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 18:33:34,326 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 18:33:34,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 06:33:33" (1/3) ... [2022-01-31 18:33:34,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1869e3e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 06:33:34, skipping insertion in model container [2022-01-31 18:33:34,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:33:33" (2/3) ... [2022-01-31 18:33:34,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1869e3e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 06:33:34, skipping insertion in model container [2022-01-31 18:33:34,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 06:33:34" (3/3) ... [2022-01-31 18:33:34,328 INFO L111 eAbstractionObserver]: Analyzing ICFG max05-1.i [2022-01-31 18:33:34,332 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 18:33:34,333 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 18:33:34,369 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 18:33:34,375 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 18:33:34,375 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 18:33:34,397 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 18:33:34,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-31 18:33:34,404 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:34,404 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:34,404 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:34,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:34,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1752078259, now seen corresponding path program 1 times [2022-01-31 18:33:34,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:34,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283796292] [2022-01-31 18:33:34,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:34,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:34,485 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:34,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:34,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:34,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:34,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 18:33:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:34,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-31 18:33:34,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:34,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 18:33:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:34,656 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-31 18:33:34,658 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:34,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283796292] [2022-01-31 18:33:34,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1283796292] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:34,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:34,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 18:33:34,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92508284] [2022-01-31 18:33:34,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:34,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 18:33:34,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:34,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 18:33:34,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 18:33:34,693 INFO L87 Difference]: Start difference. First operand has 33 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:34,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:34,808 INFO L93 Difference]: Finished difference Result 60 states and 81 transitions. [2022-01-31 18:33:34,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 18:33:34,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2022-01-31 18:33:34,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:34,831 INFO L225 Difference]: With dead ends: 60 [2022-01-31 18:33:34,831 INFO L226 Difference]: Without dead ends: 30 [2022-01-31 18:33:34,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-31 18:33:34,837 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 27 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:34,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 42 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:33:34,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-01-31 18:33:34,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2022-01-31 18:33:34,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:34,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2022-01-31 18:33:34,874 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 32 [2022-01-31 18:33:34,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:34,874 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2022-01-31 18:33:34,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:34,875 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2022-01-31 18:33:34,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-31 18:33:34,878 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:34,878 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2022-01-31 18:33:34,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 18:33:34,880 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:34,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:34,883 INFO L85 PathProgramCache]: Analyzing trace with hash 279578018, now seen corresponding path program 1 times [2022-01-31 18:33:34,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:34,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019587942] [2022-01-31 18:33:34,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:34,903 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:34,903 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:34,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:34,909 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:34,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:35,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:35,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-31 18:33:35,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:35,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 18:33:35,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:35,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-31 18:33:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:35,063 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-31 18:33:35,064 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:35,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019587942] [2022-01-31 18:33:35,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1019587942] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:35,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:35,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 18:33:35,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246426394] [2022-01-31 18:33:35,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:35,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 18:33:35,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:35,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 18:33:35,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-31 18:33:35,071 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:35,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:35,234 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2022-01-31 18:33:35,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 18:33:35,235 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2022-01-31 18:33:35,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:35,236 INFO L225 Difference]: With dead ends: 56 [2022-01-31 18:33:35,236 INFO L226 Difference]: Without dead ends: 36 [2022-01-31 18:33:35,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-01-31 18:33:35,238 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 34 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:35,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 42 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:33:35,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-01-31 18:33:35,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2022-01-31 18:33:35,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:35,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2022-01-31 18:33:35,246 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 34 [2022-01-31 18:33:35,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:35,246 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2022-01-31 18:33:35,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:35,247 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2022-01-31 18:33:35,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-31 18:33:35,251 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:35,251 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:35,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 18:33:35,252 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:35,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:35,252 INFO L85 PathProgramCache]: Analyzing trace with hash -642115777, now seen corresponding path program 1 times [2022-01-31 18:33:35,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:35,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086220958] [2022-01-31 18:33:35,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:35,258 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:35,258 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:35,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:35,260 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:35,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:35,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:35,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 18:33:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:35,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-31 18:33:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:35,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 18:33:35,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:35,409 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 18:33:35,409 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:35,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086220958] [2022-01-31 18:33:35,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1086220958] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:35,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:35,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 18:33:35,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548182699] [2022-01-31 18:33:35,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:35,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 18:33:35,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:35,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 18:33:35,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 18:33:35,412 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:35,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:35,510 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2022-01-31 18:33:35,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 18:33:35,510 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 48 [2022-01-31 18:33:35,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:35,515 INFO L225 Difference]: With dead ends: 59 [2022-01-31 18:33:35,516 INFO L226 Difference]: Without dead ends: 39 [2022-01-31 18:33:35,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-31 18:33:35,523 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 38 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:35,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 39 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:33:35,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-01-31 18:33:35,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2022-01-31 18:33:35,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:35,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2022-01-31 18:33:35,539 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 48 [2022-01-31 18:33:35,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:35,539 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2022-01-31 18:33:35,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:35,540 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2022-01-31 18:33:35,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-31 18:33:35,541 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:35,541 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:35,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 18:33:35,541 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:35,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:35,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1928555366, now seen corresponding path program 2 times [2022-01-31 18:33:35,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:35,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423224111] [2022-01-31 18:33:35,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:35,551 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:35,551 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:35,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:35,553 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:35,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:35,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 18:33:35,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:35,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-31 18:33:35,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:35,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 18:33:35,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:35,652 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:33:35,653 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:35,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423224111] [2022-01-31 18:33:35,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [423224111] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:35,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:35,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 18:33:35,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804096304] [2022-01-31 18:33:35,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:35,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 18:33:35,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:35,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 18:33:35,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 18:33:35,655 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:35,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:35,735 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2022-01-31 18:33:35,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 18:33:35,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 60 [2022-01-31 18:33:35,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:35,737 INFO L225 Difference]: With dead ends: 57 [2022-01-31 18:33:35,737 INFO L226 Difference]: Without dead ends: 38 [2022-01-31 18:33:35,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-31 18:33:35,739 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 24 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:35,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 35 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:33:35,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-01-31 18:33:35,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2022-01-31 18:33:35,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:35,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2022-01-31 18:33:35,747 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 60 [2022-01-31 18:33:35,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:35,749 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2022-01-31 18:33:35,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:35,749 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2022-01-31 18:33:35,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-31 18:33:35,750 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:35,750 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 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 18:33:35,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-31 18:33:35,751 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:35,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:35,751 INFO L85 PathProgramCache]: Analyzing trace with hash 507059448, now seen corresponding path program 1 times [2022-01-31 18:33:35,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:35,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127817225] [2022-01-31 18:33:35,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:35,754 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:35,754 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:35,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:35,756 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:35,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:35,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:35,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 18:33:35,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:35,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-31 18:33:35,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:35,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 18:33:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:35,845 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:33:35,846 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:35,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127817225] [2022-01-31 18:33:35,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1127817225] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:35,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:35,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 18:33:35,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346980442] [2022-01-31 18:33:35,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:35,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 18:33:35,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:35,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 18:33:35,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 18:33:35,849 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:35,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:35,934 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2022-01-31 18:33:35,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 18:33:35,935 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 62 [2022-01-31 18:33:35,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:35,937 INFO L225 Difference]: With dead ends: 59 [2022-01-31 18:33:35,937 INFO L226 Difference]: Without dead ends: 40 [2022-01-31 18:33:35,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-31 18:33:35,941 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 26 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:35,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 35 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 18:33:35,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-01-31 18:33:35,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2022-01-31 18:33:35,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:35,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2022-01-31 18:33:35,959 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 62 [2022-01-31 18:33:35,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:35,959 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2022-01-31 18:33:35,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:35,960 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2022-01-31 18:33:35,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-31 18:33:35,963 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:35,963 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:35,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-31 18:33:35,965 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:35,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:35,965 INFO L85 PathProgramCache]: Analyzing trace with hash 375719382, now seen corresponding path program 2 times [2022-01-31 18:33:35,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:35,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911016267] [2022-01-31 18:33:35,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:35,969 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:35,969 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:35,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:35,971 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:36,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:36,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 18:33:36,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-31 18:33:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 18:33:36,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,113 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:33:36,113 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:36,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911016267] [2022-01-31 18:33:36,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1911016267] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:36,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:36,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 18:33:36,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219127303] [2022-01-31 18:33:36,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:36,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 18:33:36,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:36,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 18:33:36,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-31 18:33:36,118 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:36,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:36,193 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2022-01-31 18:33:36,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 18:33:36,193 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 64 [2022-01-31 18:33:36,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:36,194 INFO L225 Difference]: With dead ends: 70 [2022-01-31 18:33:36,194 INFO L226 Difference]: Without dead ends: 42 [2022-01-31 18:33:36,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-31 18:33:36,195 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 28 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:36,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 35 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 18:33:36,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-01-31 18:33:36,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2022-01-31 18:33:36,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:36,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2022-01-31 18:33:36,201 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 64 [2022-01-31 18:33:36,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:36,202 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2022-01-31 18:33:36,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:36,202 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2022-01-31 18:33:36,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-31 18:33:36,203 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:36,203 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:36,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-31 18:33:36,203 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:36,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:36,204 INFO L85 PathProgramCache]: Analyzing trace with hash -2079708648, now seen corresponding path program 3 times [2022-01-31 18:33:36,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:36,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075581694] [2022-01-31 18:33:36,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:36,206 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:36,206 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:36,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:36,207 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:36,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-01-31 18:33:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-01-31 18:33:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-31 18:33:36,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,278 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:33:36,278 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:36,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075581694] [2022-01-31 18:33:36,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2075581694] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:36,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:36,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-31 18:33:36,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606450827] [2022-01-31 18:33:36,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:36,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-31 18:33:36,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:36,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-31 18:33:36,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-31 18:33:36,280 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:36,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:36,352 INFO L93 Difference]: Finished difference Result 72 states and 84 transitions. [2022-01-31 18:33:36,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 18:33:36,353 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 66 [2022-01-31 18:33:36,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:36,354 INFO L225 Difference]: With dead ends: 72 [2022-01-31 18:33:36,354 INFO L226 Difference]: Without dead ends: 44 [2022-01-31 18:33:36,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-01-31 18:33:36,355 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 30 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:36,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 35 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 18:33:36,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-01-31 18:33:36,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2022-01-31 18:33:36,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:36,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2022-01-31 18:33:36,361 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 66 [2022-01-31 18:33:36,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:36,362 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2022-01-31 18:33:36,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:36,362 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2022-01-31 18:33:36,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-31 18:33:36,363 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:36,363 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:36,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-31 18:33:36,363 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:36,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:36,364 INFO L85 PathProgramCache]: Analyzing trace with hash 485967322, now seen corresponding path program 4 times [2022-01-31 18:33:36,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:36,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108783961] [2022-01-31 18:33:36,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:36,366 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:36,366 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:36,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:36,367 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:36,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 18:33:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 18:33:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 18:33:36,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,456 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:33:36,456 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:36,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108783961] [2022-01-31 18:33:36,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1108783961] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:36,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:36,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 18:33:36,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975600191] [2022-01-31 18:33:36,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:36,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 18:33:36,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:36,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 18:33:36,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-31 18:33:36,459 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:36,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:36,590 INFO L93 Difference]: Finished difference Result 73 states and 85 transitions. [2022-01-31 18:33:36,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 18:33:36,591 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 68 [2022-01-31 18:33:36,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:36,591 INFO L225 Difference]: With dead ends: 73 [2022-01-31 18:33:36,592 INFO L226 Difference]: Without dead ends: 45 [2022-01-31 18:33:36,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-01-31 18:33:36,593 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 31 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:36,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 45 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:33:36,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-01-31 18:33:36,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-01-31 18:33:36,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:36,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2022-01-31 18:33:36,598 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 68 [2022-01-31 18:33:36,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:36,598 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2022-01-31 18:33:36,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:36,598 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2022-01-31 18:33:36,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-31 18:33:36,599 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:36,599 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:36,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-31 18:33:36,599 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:36,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:36,600 INFO L85 PathProgramCache]: Analyzing trace with hash 789346588, now seen corresponding path program 5 times [2022-01-31 18:33:36,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:36,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499120317] [2022-01-31 18:33:36,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:36,601 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:36,602 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:36,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:36,603 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:36,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:36,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:33:36,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-01-31 18:33:36,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 18:33:36,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,688 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-31 18:33:36,688 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:36,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499120317] [2022-01-31 18:33:36,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1499120317] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:36,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:36,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 18:33:36,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332040812] [2022-01-31 18:33:36,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:36,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 18:33:36,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:36,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 18:33:36,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-31 18:33:36,690 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:36,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:36,781 INFO L93 Difference]: Finished difference Result 79 states and 95 transitions. [2022-01-31 18:33:36,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 18:33:36,782 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 70 [2022-01-31 18:33:36,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:36,783 INFO L225 Difference]: With dead ends: 79 [2022-01-31 18:33:36,783 INFO L226 Difference]: Without dead ends: 52 [2022-01-31 18:33:36,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-31 18:33:36,786 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 47 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:36,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 39 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:33:36,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-01-31 18:33:36,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2022-01-31 18:33:36,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 41 states have (on average 1.146341463414634) internal successors, (47), 41 states have internal predecessors, (47), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:36,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2022-01-31 18:33:36,798 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 70 [2022-01-31 18:33:36,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:36,799 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2022-01-31 18:33:36,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:36,799 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2022-01-31 18:33:36,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-31 18:33:36,800 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:36,800 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:36,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-31 18:33:36,800 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:36,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:36,801 INFO L85 PathProgramCache]: Analyzing trace with hash -843391241, now seen corresponding path program 6 times [2022-01-31 18:33:36,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:36,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724271529] [2022-01-31 18:33:36,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:36,803 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:36,803 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:36,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:36,804 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:36,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:33:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-31 18:33:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 18:33:36,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,886 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-31 18:33:36,886 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:36,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724271529] [2022-01-31 18:33:36,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [724271529] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:36,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:36,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-31 18:33:36,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907833979] [2022-01-31 18:33:36,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:36,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-31 18:33:36,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:36,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-31 18:33:36,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-31 18:33:36,888 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:36,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:36,992 INFO L93 Difference]: Finished difference Result 87 states and 105 transitions. [2022-01-31 18:33:36,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 18:33:36,993 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 82 [2022-01-31 18:33:36,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:36,993 INFO L225 Difference]: With dead ends: 87 [2022-01-31 18:33:36,993 INFO L226 Difference]: Without dead ends: 56 [2022-01-31 18:33:36,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-01-31 18:33:36,996 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 54 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:36,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 49 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:33:36,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-01-31 18:33:37,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2022-01-31 18:33:37,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 45 states have internal predecessors, (52), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:37,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2022-01-31 18:33:37,015 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 82 [2022-01-31 18:33:37,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:37,016 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2022-01-31 18:33:37,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:37,016 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2022-01-31 18:33:37,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-31 18:33:37,019 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:37,019 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:37,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-31 18:33:37,019 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:37,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:37,020 INFO L85 PathProgramCache]: Analyzing trace with hash -952511406, now seen corresponding path program 7 times [2022-01-31 18:33:37,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:37,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569602225] [2022-01-31 18:33:37,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:37,022 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:37,023 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:37,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:37,024 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:37,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:37,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:37,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:33:37,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:37,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 18:33:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:37,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 18:33:37,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:37,140 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-01-31 18:33:37,140 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:37,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569602225] [2022-01-31 18:33:37,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [569602225] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:37,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:37,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 18:33:37,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205264493] [2022-01-31 18:33:37,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:37,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 18:33:37,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:37,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 18:33:37,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-31 18:33:37,142 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:37,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:37,255 INFO L93 Difference]: Finished difference Result 92 states and 111 transitions. [2022-01-31 18:33:37,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 18:33:37,255 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 94 [2022-01-31 18:33:37,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:37,256 INFO L225 Difference]: With dead ends: 92 [2022-01-31 18:33:37,256 INFO L226 Difference]: Without dead ends: 57 [2022-01-31 18:33:37,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-01-31 18:33:37,257 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 61 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:37,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 44 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:33:37,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-01-31 18:33:37,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-01-31 18:33:37,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 49 states have (on average 1.163265306122449) internal successors, (57), 49 states have internal predecessors, (57), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:37,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2022-01-31 18:33:37,263 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 94 [2022-01-31 18:33:37,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:37,264 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2022-01-31 18:33:37,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:37,264 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2022-01-31 18:33:37,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-31 18:33:37,264 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:37,265 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:37,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-31 18:33:37,265 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:37,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:37,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1583802067, now seen corresponding path program 8 times [2022-01-31 18:33:37,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:37,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007012985] [2022-01-31 18:33:37,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:37,267 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:37,267 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:37,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:37,269 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:37,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:37,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:37,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:33:37,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:37,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:33:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:37,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 18:33:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:37,347 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-01-31 18:33:37,347 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:37,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007012985] [2022-01-31 18:33:37,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2007012985] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:37,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:37,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 18:33:37,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927108823] [2022-01-31 18:33:37,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:37,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 18:33:37,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:37,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 18:33:37,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-31 18:33:37,349 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:37,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:37,421 INFO L93 Difference]: Finished difference Result 91 states and 106 transitions. [2022-01-31 18:33:37,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 18:33:37,422 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 106 [2022-01-31 18:33:37,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:37,423 INFO L225 Difference]: With dead ends: 91 [2022-01-31 18:33:37,423 INFO L226 Difference]: Without dead ends: 60 [2022-01-31 18:33:37,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-31 18:33:37,424 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 28 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:37,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 45 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 18:33:37,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-01-31 18:33:37,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2022-01-31 18:33:37,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 51 states have (on average 1.1568627450980393) internal successors, (59), 51 states have internal predecessors, (59), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:37,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2022-01-31 18:33:37,431 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 106 [2022-01-31 18:33:37,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:37,431 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2022-01-31 18:33:37,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:37,431 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2022-01-31 18:33:37,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-31 18:33:37,432 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:37,432 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:37,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-31 18:33:37,432 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:37,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:37,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1640455157, now seen corresponding path program 9 times [2022-01-31 18:33:37,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:37,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271647743] [2022-01-31 18:33:37,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:37,435 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:37,435 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:37,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:37,436 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:37,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:37,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:37,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:37,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:33:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:37,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:33:37,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:37,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 18:33:37,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:37,524 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-01-31 18:33:37,524 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:37,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271647743] [2022-01-31 18:33:37,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [271647743] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:37,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:37,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-31 18:33:37,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536405023] [2022-01-31 18:33:37,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:37,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-31 18:33:37,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:37,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-31 18:33:37,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-31 18:33:37,526 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:37,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:37,599 INFO L93 Difference]: Finished difference Result 92 states and 107 transitions. [2022-01-31 18:33:37,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 18:33:37,599 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 108 [2022-01-31 18:33:37,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:37,600 INFO L225 Difference]: With dead ends: 92 [2022-01-31 18:33:37,600 INFO L226 Difference]: Without dead ends: 61 [2022-01-31 18:33:37,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-01-31 18:33:37,601 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 29 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:37,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 40 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 18:33:37,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-01-31 18:33:37,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-01-31 18:33:37,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 53 states have (on average 1.150943396226415) internal successors, (61), 53 states have internal predecessors, (61), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:37,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2022-01-31 18:33:37,607 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 108 [2022-01-31 18:33:37,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:37,607 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2022-01-31 18:33:37,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:37,608 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2022-01-31 18:33:37,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:33:37,608 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:37,609 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:37,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-31 18:33:37,609 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:37,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:37,609 INFO L85 PathProgramCache]: Analyzing trace with hash -249499799, now seen corresponding path program 10 times [2022-01-31 18:33:37,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:37,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624905538] [2022-01-31 18:33:37,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:37,611 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:37,611 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:37,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:37,612 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:37,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:37,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:37,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:33:37,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:38,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:33:38,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:38,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:33:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:38,240 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 18:33:38,240 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:38,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624905538] [2022-01-31 18:33:38,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [624905538] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:38,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:38,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-31 18:33:38,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224161089] [2022-01-31 18:33:38,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:38,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-31 18:33:38,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:38,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-31 18:33:38,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-01-31 18:33:38,242 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand has 17 states, 16 states have (on average 2.875) internal successors, (46), 15 states have internal predecessors, (46), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:38,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:38,717 INFO L93 Difference]: Finished difference Result 131 states and 153 transitions. [2022-01-31 18:33:38,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-31 18:33:38,717 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.875) internal successors, (46), 15 states have internal predecessors, (46), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:33:38,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:38,718 INFO L225 Difference]: With dead ends: 131 [2022-01-31 18:33:38,718 INFO L226 Difference]: Without dead ends: 90 [2022-01-31 18:33:38,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=853, Unknown=0, NotChecked=0, Total=992 [2022-01-31 18:33:38,720 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 77 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:38,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 59 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:33:38,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-01-31 18:33:38,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 81. [2022-01-31 18:33:38,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 71 states have (on average 1.1690140845070423) internal successors, (83), 72 states have internal predecessors, (83), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-01-31 18:33:38,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 97 transitions. [2022-01-31 18:33:38,733 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 97 transitions. Word has length 110 [2022-01-31 18:33:38,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:38,734 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 97 transitions. [2022-01-31 18:33:38,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.875) internal successors, (46), 15 states have internal predecessors, (46), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:38,734 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 97 transitions. [2022-01-31 18:33:38,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:33:38,735 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:38,735 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:38,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-31 18:33:38,735 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:38,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:38,736 INFO L85 PathProgramCache]: Analyzing trace with hash 311199979, now seen corresponding path program 1 times [2022-01-31 18:33:38,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:38,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282918729] [2022-01-31 18:33:38,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:38,738 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:38,738 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:38,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:38,739 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:38,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:39,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:39,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:39,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:33:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:39,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:33:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:39,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:33:39,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:40,001 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-31 18:33:40,002 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:40,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282918729] [2022-01-31 18:33:40,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [282918729] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:40,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:40,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-01-31 18:33:40,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524462122] [2022-01-31 18:33:40,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:40,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-31 18:33:40,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:40,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-31 18:33:40,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1302, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 18:33:40,004 INFO L87 Difference]: Start difference. First operand 81 states and 97 transitions. Second operand has 38 states, 37 states have (on average 2.027027027027027) internal successors, (75), 36 states have internal predecessors, (75), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:41,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:41,882 INFO L93 Difference]: Finished difference Result 175 states and 225 transitions. [2022-01-31 18:33:41,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-31 18:33:41,883 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.027027027027027) internal successors, (75), 36 states have internal predecessors, (75), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:33:41,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:41,886 INFO L225 Difference]: With dead ends: 175 [2022-01-31 18:33:41,886 INFO L226 Difference]: Without dead ends: 171 [2022-01-31 18:33:41,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1532 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=427, Invalid=5425, Unknown=0, NotChecked=0, Total=5852 [2022-01-31 18:33:41,888 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 136 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 1625 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 1717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:41,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 107 Invalid, 1717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1625 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 18:33:41,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-01-31 18:33:41,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 147. [2022-01-31 18:33:41,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 130 states have (on average 1.1923076923076923) internal successors, (155), 135 states have internal predecessors, (155), 9 states have call successors, (9), 3 states have call predecessors, (9), 7 states have return successors, (35), 8 states have call predecessors, (35), 8 states have call successors, (35) [2022-01-31 18:33:41,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 199 transitions. [2022-01-31 18:33:41,930 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 199 transitions. Word has length 110 [2022-01-31 18:33:41,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:41,931 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 199 transitions. [2022-01-31 18:33:41,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.027027027027027) internal successors, (75), 36 states have internal predecessors, (75), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:41,932 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 199 transitions. [2022-01-31 18:33:41,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:33:41,934 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:41,934 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 13, 5, 5, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:41,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-31 18:33:41,934 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:41,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:41,935 INFO L85 PathProgramCache]: Analyzing trace with hash -81827031, now seen corresponding path program 2 times [2022-01-31 18:33:41,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:41,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434311849] [2022-01-31 18:33:41,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:41,937 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:41,937 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:41,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:41,938 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:42,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:42,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:33:42,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:43,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:33:43,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:44,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:33:44,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:44,504 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-31 18:33:44,504 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:44,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434311849] [2022-01-31 18:33:44,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [434311849] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:44,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:44,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2022-01-31 18:33:44,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254880179] [2022-01-31 18:33:44,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:44,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-01-31 18:33:44,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:44,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-01-31 18:33:44,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=3252, Unknown=0, NotChecked=0, Total=3422 [2022-01-31 18:33:44,507 INFO L87 Difference]: Start difference. First operand 147 states and 199 transitions. Second operand has 59 states, 58 states have (on average 1.5344827586206897) internal successors, (89), 55 states have internal predecessors, (89), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:48,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:48,305 INFO L93 Difference]: Finished difference Result 319 states and 474 transitions. [2022-01-31 18:33:48,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-31 18:33:48,306 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 1.5344827586206897) internal successors, (89), 55 states have internal predecessors, (89), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:33:48,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:48,310 INFO L225 Difference]: With dead ends: 319 [2022-01-31 18:33:48,310 INFO L226 Difference]: Without dead ends: 315 [2022-01-31 18:33:48,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3718 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=705, Invalid=13815, Unknown=0, NotChecked=0, Total=14520 [2022-01-31 18:33:48,316 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 153 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2744 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 2872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:48,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 155 Invalid, 2872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 2744 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-31 18:33:48,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-01-31 18:33:48,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 238. [2022-01-31 18:33:48,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 211 states have (on average 1.2132701421800949) internal successors, (256), 224 states have internal predecessors, (256), 11 states have call successors, (11), 3 states have call predecessors, (11), 15 states have return successors, (97), 10 states have call predecessors, (97), 10 states have call successors, (97) [2022-01-31 18:33:48,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 364 transitions. [2022-01-31 18:33:48,374 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 364 transitions. Word has length 110 [2022-01-31 18:33:48,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:48,374 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 364 transitions. [2022-01-31 18:33:48,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 1.5344827586206897) internal successors, (89), 55 states have internal predecessors, (89), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:48,375 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 364 transitions. [2022-01-31 18:33:48,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:33:48,378 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:48,378 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 13, 5, 5, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:48,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-31 18:33:48,379 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:48,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:48,379 INFO L85 PathProgramCache]: Analyzing trace with hash -699917271, now seen corresponding path program 3 times [2022-01-31 18:33:48,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:48,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573627192] [2022-01-31 18:33:48,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:48,382 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:48,382 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:48,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:48,384 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:48,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:48,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:48,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:33:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:49,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:33:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:49,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:33:49,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:49,469 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-31 18:33:49,470 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:49,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573627192] [2022-01-31 18:33:49,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [573627192] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:49,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:49,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-31 18:33:49,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690992645] [2022-01-31 18:33:49,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:49,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-31 18:33:49,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:49,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-31 18:33:49,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1162, Unknown=0, NotChecked=0, Total=1260 [2022-01-31 18:33:49,472 INFO L87 Difference]: Start difference. First operand 238 states and 364 transitions. Second operand has 36 states, 35 states have (on average 2.142857142857143) internal successors, (75), 34 states have internal predecessors, (75), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:51,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:51,099 INFO L93 Difference]: Finished difference Result 286 states and 426 transitions. [2022-01-31 18:33:51,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-31 18:33:51,100 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.142857142857143) internal successors, (75), 34 states have internal predecessors, (75), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:33:51,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:51,103 INFO L225 Difference]: With dead ends: 286 [2022-01-31 18:33:51,103 INFO L226 Difference]: Without dead ends: 282 [2022-01-31 18:33:51,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1309 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=401, Invalid=4855, Unknown=0, NotChecked=0, Total=5256 [2022-01-31 18:33:51,105 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 141 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 1542 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 1633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:51,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 105 Invalid, 1633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1542 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 18:33:51,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-01-31 18:33:51,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 233. [2022-01-31 18:33:51,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 207 states have (on average 1.2173913043478262) internal successors, (252), 219 states have internal predecessors, (252), 11 states have call successors, (11), 3 states have call predecessors, (11), 14 states have return successors, (88), 10 states have call predecessors, (88), 10 states have call successors, (88) [2022-01-31 18:33:51,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 351 transitions. [2022-01-31 18:33:51,154 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 351 transitions. Word has length 110 [2022-01-31 18:33:51,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:51,154 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 351 transitions. [2022-01-31 18:33:51,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.142857142857143) internal successors, (75), 34 states have internal predecessors, (75), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:51,154 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 351 transitions. [2022-01-31 18:33:51,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:33:51,164 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:51,164 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 12, 5, 5, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:51,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-31 18:33:51,165 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:51,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:51,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1092944281, now seen corresponding path program 4 times [2022-01-31 18:33:51,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:51,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073125190] [2022-01-31 18:33:51,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:51,167 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:51,167 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:51,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:51,168 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:51,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:51,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:51,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:33:51,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:51,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:33:51,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:51,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:33:51,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:52,323 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-31 18:33:52,324 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:52,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073125190] [2022-01-31 18:33:52,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1073125190] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:52,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:52,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-01-31 18:33:52,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116716268] [2022-01-31 18:33:52,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:52,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-31 18:33:52,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:52,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-31 18:33:52,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1091, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 18:33:52,326 INFO L87 Difference]: Start difference. First operand 233 states and 351 transitions. Second operand has 35 states, 35 states have (on average 2.2) internal successors, (77), 33 states have internal predecessors, (77), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 18:33:55,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:55,042 INFO L93 Difference]: Finished difference Result 489 states and 787 transitions. [2022-01-31 18:33:55,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-31 18:33:55,043 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 33 states have internal predecessors, (77), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 110 [2022-01-31 18:33:55,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:55,047 INFO L225 Difference]: With dead ends: 489 [2022-01-31 18:33:55,047 INFO L226 Difference]: Without dead ends: 485 [2022-01-31 18:33:55,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2606 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=644, Invalid=7912, Unknown=0, NotChecked=0, Total=8556 [2022-01-31 18:33:55,051 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 134 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 3117 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 3193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 3117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:55,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 159 Invalid, 3193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 3117 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-31 18:33:55,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-01-31 18:33:55,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 418. [2022-01-31 18:33:55,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 376 states have (on average 1.2367021276595744) internal successors, (465), 397 states have internal predecessors, (465), 18 states have call successors, (18), 4 states have call predecessors, (18), 23 states have return successors, (203), 16 states have call predecessors, (203), 17 states have call successors, (203) [2022-01-31 18:33:55,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 686 transitions. [2022-01-31 18:33:55,160 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 686 transitions. Word has length 110 [2022-01-31 18:33:55,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:55,161 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 686 transitions. [2022-01-31 18:33:55,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 33 states have internal predecessors, (77), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 18:33:55,161 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 686 transitions. [2022-01-31 18:33:55,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:33:55,167 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:55,168 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 13, 5, 5, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:55,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-31 18:33:55,168 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:55,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:55,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1682944727, now seen corresponding path program 5 times [2022-01-31 18:33:55,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:55,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993733615] [2022-01-31 18:33:55,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:55,171 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:55,172 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:55,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:55,173 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:55,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:55,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:55,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:33:55,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:55,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:33:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:55,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:33:55,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:56,240 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-31 18:33:56,240 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:56,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993733615] [2022-01-31 18:33:56,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [993733615] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:56,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:56,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-31 18:33:56,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294266625] [2022-01-31 18:33:56,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:56,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-31 18:33:56,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:56,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-31 18:33:56,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1231, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 18:33:56,242 INFO L87 Difference]: Start difference. First operand 418 states and 686 transitions. Second operand has 37 states, 36 states have (on average 2.111111111111111) internal successors, (76), 35 states have internal predecessors, (76), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:57,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:57,899 INFO L93 Difference]: Finished difference Result 493 states and 808 transitions. [2022-01-31 18:33:57,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-31 18:33:57,903 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.111111111111111) internal successors, (76), 35 states have internal predecessors, (76), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:33:57,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:57,907 INFO L225 Difference]: With dead ends: 493 [2022-01-31 18:33:57,907 INFO L226 Difference]: Without dead ends: 489 [2022-01-31 18:33:57,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1990 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=496, Invalid=6644, Unknown=0, NotChecked=0, Total=7140 [2022-01-31 18:33:57,911 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 177 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1471 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:57,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 84 Invalid, 1583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1471 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 18:33:57,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-01-31 18:33:58,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 439. [2022-01-31 18:33:58,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 394 states have (on average 1.2411167512690355) internal successors, (489), 418 states have internal predecessors, (489), 18 states have call successors, (18), 4 states have call predecessors, (18), 26 states have return successors, (234), 16 states have call predecessors, (234), 17 states have call successors, (234) [2022-01-31 18:33:58,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 741 transitions. [2022-01-31 18:33:58,023 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 741 transitions. Word has length 110 [2022-01-31 18:33:58,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:58,024 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 741 transitions. [2022-01-31 18:33:58,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.111111111111111) internal successors, (76), 35 states have internal predecessors, (76), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:58,024 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 741 transitions. [2022-01-31 18:33:58,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:33:58,030 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:58,030 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 12, 5, 5, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:58,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-31 18:33:58,031 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:58,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:58,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1600905319, now seen corresponding path program 6 times [2022-01-31 18:33:58,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:58,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103066117] [2022-01-31 18:33:58,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:58,033 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:58,034 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:58,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:58,035 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:58,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:58,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:33:58,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:58,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:33:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:58,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:33:58,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:58,967 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-31 18:33:58,968 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:58,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103066117] [2022-01-31 18:33:58,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1103066117] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:58,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:58,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-01-31 18:33:58,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142001556] [2022-01-31 18:33:58,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:58,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-31 18:33:58,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:58,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-31 18:33:58,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1095, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 18:33:58,970 INFO L87 Difference]: Start difference. First operand 439 states and 741 transitions. Second operand has 35 states, 34 states have (on average 2.235294117647059) internal successors, (76), 33 states have internal predecessors, (76), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:00,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:34:00,809 INFO L93 Difference]: Finished difference Result 508 states and 821 transitions. [2022-01-31 18:34:00,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-31 18:34:00,810 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.235294117647059) internal successors, (76), 33 states have internal predecessors, (76), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:34:00,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:34:00,813 INFO L225 Difference]: With dead ends: 508 [2022-01-31 18:34:00,814 INFO L226 Difference]: Without dead ends: 504 [2022-01-31 18:34:00,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1627 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=451, Invalid=5711, Unknown=0, NotChecked=0, Total=6162 [2022-01-31 18:34:00,816 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 137 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 1997 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 2077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 18:34:00,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 127 Invalid, 2077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1997 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 18:34:00,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2022-01-31 18:34:00,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 404. [2022-01-31 18:34:00,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 362 states have (on average 1.2348066298342542) internal successors, (447), 383 states have internal predecessors, (447), 18 states have call successors, (18), 4 states have call predecessors, (18), 23 states have return successors, (191), 16 states have call predecessors, (191), 17 states have call successors, (191) [2022-01-31 18:34:00,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 656 transitions. [2022-01-31 18:34:00,920 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 656 transitions. Word has length 110 [2022-01-31 18:34:00,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:34:00,920 INFO L470 AbstractCegarLoop]: Abstraction has 404 states and 656 transitions. [2022-01-31 18:34:00,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.235294117647059) internal successors, (76), 33 states have internal predecessors, (76), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:00,920 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 656 transitions. [2022-01-31 18:34:00,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:34:00,926 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:34:00,926 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 11, 5, 5, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:34:00,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-31 18:34:00,926 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:34:00,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:34:00,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1207878309, now seen corresponding path program 7 times [2022-01-31 18:34:00,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:34:00,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443186337] [2022-01-31 18:34:00,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:34:00,930 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:34:00,930 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:34:00,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:34:00,931 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:34:00,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:01,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:34:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:01,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:34:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:01,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:34:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:01,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:34:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:01,948 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-31 18:34:01,948 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:34:01,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443186337] [2022-01-31 18:34:01,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [443186337] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:34:01,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:34:01,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-31 18:34:01,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126429489] [2022-01-31 18:34:01,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:34:01,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-31 18:34:01,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:34:01,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-31 18:34:01,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1224, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 18:34:01,953 INFO L87 Difference]: Start difference. First operand 404 states and 656 transitions. Second operand has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 36 states have internal predecessors, (81), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:04,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:34:04,022 INFO L93 Difference]: Finished difference Result 698 states and 1220 transitions. [2022-01-31 18:34:04,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-31 18:34:04,022 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 36 states have internal predecessors, (81), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:34:04,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:34:04,029 INFO L225 Difference]: With dead ends: 698 [2022-01-31 18:34:04,029 INFO L226 Difference]: Without dead ends: 694 [2022-01-31 18:34:04,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2792 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=728, Invalid=8392, Unknown=0, NotChecked=0, Total=9120 [2022-01-31 18:34:04,034 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 148 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 1952 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 2033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:34:04,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 111 Invalid, 2033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1952 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 18:34:04,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2022-01-31 18:34:04,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 656. [2022-01-31 18:34:04,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 592 states have (on average 1.2347972972972974) internal successors, (731), 621 states have internal predecessors, (731), 30 states have call successors, (30), 6 states have call predecessors, (30), 33 states have return successors, (371), 28 states have call predecessors, (371), 29 states have call successors, (371) [2022-01-31 18:34:04,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 1132 transitions. [2022-01-31 18:34:04,222 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 1132 transitions. Word has length 110 [2022-01-31 18:34:04,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:34:04,223 INFO L470 AbstractCegarLoop]: Abstraction has 656 states and 1132 transitions. [2022-01-31 18:34:04,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 36 states have internal predecessors, (81), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:04,223 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 1132 transitions. [2022-01-31 18:34:04,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:34:04,232 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:34:04,232 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 10, 5, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:34:04,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-31 18:34:04,233 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:34:04,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:34:04,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1426733027, now seen corresponding path program 8 times [2022-01-31 18:34:04,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:34:04,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30759617] [2022-01-31 18:34:04,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:34:04,235 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:34:04,235 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:34:04,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:34:04,237 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:34:04,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:34:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:34:04,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:05,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:34:05,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:05,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:34:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:05,417 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-31 18:34:05,418 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:34:05,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30759617] [2022-01-31 18:34:05,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [30759617] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:34:05,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:34:05,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-01-31 18:34:05,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914837645] [2022-01-31 18:34:05,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:34:05,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-31 18:34:05,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:34:05,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-31 18:34:05,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1367, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 18:34:05,419 INFO L87 Difference]: Start difference. First operand 656 states and 1132 transitions. Second operand has 39 states, 39 states have (on average 2.0256410256410255) internal successors, (79), 37 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:07,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:34:07,251 INFO L93 Difference]: Finished difference Result 958 states and 1783 transitions. [2022-01-31 18:34:07,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-31 18:34:07,254 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.0256410256410255) internal successors, (79), 37 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:34:07,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:34:07,263 INFO L225 Difference]: With dead ends: 958 [2022-01-31 18:34:07,264 INFO L226 Difference]: Without dead ends: 954 [2022-01-31 18:34:07,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1592 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=417, Invalid=5133, Unknown=0, NotChecked=0, Total=5550 [2022-01-31 18:34:07,269 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 121 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 1985 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 2070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 18:34:07,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 132 Invalid, 2070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1985 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 18:34:07,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2022-01-31 18:34:07,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 772. [2022-01-31 18:34:07,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 700 states have (on average 1.23) internal successors, (861), 733 states have internal predecessors, (861), 34 states have call successors, (34), 6 states have call predecessors, (34), 37 states have return successors, (465), 32 states have call predecessors, (465), 33 states have call successors, (465) [2022-01-31 18:34:07,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 1360 transitions. [2022-01-31 18:34:07,500 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 1360 transitions. Word has length 110 [2022-01-31 18:34:07,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:34:07,500 INFO L470 AbstractCegarLoop]: Abstraction has 772 states and 1360 transitions. [2022-01-31 18:34:07,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.0256410256410255) internal successors, (79), 37 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:07,501 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 1360 transitions. [2022-01-31 18:34:07,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:34:07,512 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:34:07,512 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:34:07,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-31 18:34:07,512 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:34:07,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:34:07,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1488772641, now seen corresponding path program 9 times [2022-01-31 18:34:07,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:34:07,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382967532] [2022-01-31 18:34:07,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:34:07,515 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:34:07,516 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:34:07,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:34:07,517 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:34:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:07,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:34:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:07,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:34:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:07,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:34:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:07,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:34:07,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:08,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 18:34:08,258 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:34:08,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382967532] [2022-01-31 18:34:08,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [382967532] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:34:08,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:34:08,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-31 18:34:08,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894156482] [2022-01-31 18:34:08,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:34:08,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-31 18:34:08,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:34:08,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-31 18:34:08,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=978, Unknown=0, NotChecked=0, Total=1056 [2022-01-31 18:34:08,260 INFO L87 Difference]: Start difference. First operand 772 states and 1360 transitions. Second operand has 33 states, 32 states have (on average 2.34375) internal successors, (75), 31 states have internal predecessors, (75), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:09,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:34:09,921 INFO L93 Difference]: Finished difference Result 1121 states and 2153 transitions. [2022-01-31 18:34:09,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-31 18:34:09,922 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.34375) internal successors, (75), 31 states have internal predecessors, (75), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:34:09,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:34:09,934 INFO L225 Difference]: With dead ends: 1121 [2022-01-31 18:34:09,935 INFO L226 Difference]: Without dead ends: 1117 [2022-01-31 18:34:09,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 854 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=288, Invalid=4002, Unknown=0, NotChecked=0, Total=4290 [2022-01-31 18:34:09,944 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 116 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 2370 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 2421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 18:34:09,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 156 Invalid, 2421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2370 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 18:34:09,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2022-01-31 18:34:10,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 1017. [2022-01-31 18:34:10,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1017 states, 918 states have (on average 1.2233115468409586) internal successors, (1123), 962 states have internal predecessors, (1123), 50 states have call successors, (50), 6 states have call predecessors, (50), 48 states have return successors, (835), 48 states have call predecessors, (835), 49 states have call successors, (835) [2022-01-31 18:34:10,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 2008 transitions. [2022-01-31 18:34:10,257 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 2008 transitions. Word has length 110 [2022-01-31 18:34:10,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:34:10,257 INFO L470 AbstractCegarLoop]: Abstraction has 1017 states and 2008 transitions. [2022-01-31 18:34:10,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.34375) internal successors, (75), 31 states have internal predecessors, (75), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:10,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 2008 transitions. [2022-01-31 18:34:10,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:34:10,281 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:34:10,281 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 12, 5, 5, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:34:10,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-31 18:34:10,281 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:34:10,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:34:10,282 INFO L85 PathProgramCache]: Analyzing trace with hash -434915413, now seen corresponding path program 10 times [2022-01-31 18:34:10,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:34:10,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775594141] [2022-01-31 18:34:10,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:34:10,283 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:34:10,283 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:34:10,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:34:10,285 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:34:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:10,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:34:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:10,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:34:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:10,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:34:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:10,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:34:10,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:10,888 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 18:34:10,888 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:34:10,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775594141] [2022-01-31 18:34:10,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1775594141] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:34:10,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:34:10,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-01-31 18:34:10,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257019455] [2022-01-31 18:34:10,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:34:10,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-31 18:34:10,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:34:10,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-31 18:34:10,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2022-01-31 18:34:10,889 INFO L87 Difference]: Start difference. First operand 1017 states and 2008 transitions. Second operand has 25 states, 25 states have (on average 2.68) internal successors, (67), 24 states have internal predecessors, (67), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:12,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:34:12,508 INFO L93 Difference]: Finished difference Result 1575 states and 2865 transitions. [2022-01-31 18:34:12,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-31 18:34:12,515 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.68) internal successors, (67), 24 states have internal predecessors, (67), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:34:12,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:34:12,529 INFO L225 Difference]: With dead ends: 1575 [2022-01-31 18:34:12,529 INFO L226 Difference]: Without dead ends: 1098 [2022-01-31 18:34:12,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 817 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=337, Invalid=3323, Unknown=0, NotChecked=0, Total=3660 [2022-01-31 18:34:12,544 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 119 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1648 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 1699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 18:34:12,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 118 Invalid, 1699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1648 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 18:34:12,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2022-01-31 18:34:12,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 1010. [2022-01-31 18:34:12,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1010 states, 912 states have (on average 1.2160087719298245) internal successors, (1109), 955 states have internal predecessors, (1109), 50 states have call successors, (50), 6 states have call predecessors, (50), 47 states have return successors, (820), 48 states have call predecessors, (820), 49 states have call successors, (820) [2022-01-31 18:34:12,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1979 transitions. [2022-01-31 18:34:12,862 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1979 transitions. Word has length 110 [2022-01-31 18:34:12,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:34:12,862 INFO L470 AbstractCegarLoop]: Abstraction has 1010 states and 1979 transitions. [2022-01-31 18:34:12,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.68) internal successors, (67), 24 states have internal predecessors, (67), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:12,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1979 transitions. [2022-01-31 18:34:12,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:34:12,887 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:34:12,887 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 11, 5, 5, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:34:12,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-31 18:34:12,888 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:34:12,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:34:12,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1831465773, now seen corresponding path program 11 times [2022-01-31 18:34:12,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:34:12,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598069374] [2022-01-31 18:34:12,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:34:12,889 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:34:12,889 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:34:12,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:34:12,891 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:34:12,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:13,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:34:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:13,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:34:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:13,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:34:13,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:13,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:34:13,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:13,708 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 18:34:13,709 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:34:13,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598069374] [2022-01-31 18:34:13,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [598069374] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:34:13,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:34:13,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-01-31 18:34:13,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489639481] [2022-01-31 18:34:13,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:34:13,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-31 18:34:13,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:34:13,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-31 18:34:13,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=799, Unknown=0, NotChecked=0, Total=870 [2022-01-31 18:34:13,711 INFO L87 Difference]: Start difference. First operand 1010 states and 1979 transitions. Second operand has 30 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 29 states have internal predecessors, (71), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:15,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:34:15,868 INFO L93 Difference]: Finished difference Result 1626 states and 2918 transitions. [2022-01-31 18:34:15,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-31 18:34:15,871 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 29 states have internal predecessors, (71), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:34:15,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:34:15,884 INFO L225 Difference]: With dead ends: 1626 [2022-01-31 18:34:15,884 INFO L226 Difference]: Without dead ends: 1149 [2022-01-31 18:34:15,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1718 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=507, Invalid=6135, Unknown=0, NotChecked=0, Total=6642 [2022-01-31 18:34:15,897 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 112 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 2239 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 2291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 2239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 18:34:15,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 133 Invalid, 2291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 2239 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 18:34:15,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2022-01-31 18:34:16,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 998. [2022-01-31 18:34:16,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 900 states have (on average 1.2133333333333334) internal successors, (1092), 943 states have internal predecessors, (1092), 50 states have call successors, (50), 6 states have call predecessors, (50), 47 states have return successors, (805), 48 states have call predecessors, (805), 49 states have call successors, (805) [2022-01-31 18:34:16,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1947 transitions. [2022-01-31 18:34:16,204 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1947 transitions. Word has length 110 [2022-01-31 18:34:16,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:34:16,204 INFO L470 AbstractCegarLoop]: Abstraction has 998 states and 1947 transitions. [2022-01-31 18:34:16,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 29 states have internal predecessors, (71), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:16,205 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1947 transitions. [2022-01-31 18:34:16,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:34:16,217 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:34:16,218 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 10, 5, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:34:16,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-31 18:34:16,218 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:34:16,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:34:16,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1076716113, now seen corresponding path program 12 times [2022-01-31 18:34:16,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:34:16,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231565922] [2022-01-31 18:34:16,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:34:16,220 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:34:16,220 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:34:16,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:34:16,221 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:34:16,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:16,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:34:16,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:16,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:34:16,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:16,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:34:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:17,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:34:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:17,437 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 18:34:17,437 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:34:17,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231565922] [2022-01-31 18:34:17,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [231565922] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:34:17,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:34:17,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-01-31 18:34:17,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075136549] [2022-01-31 18:34:17,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:34:17,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-31 18:34:17,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:34:17,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-31 18:34:17,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1387, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 18:34:17,439 INFO L87 Difference]: Start difference. First operand 998 states and 1947 transitions. Second operand has 39 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 37 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:19,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:34:19,722 INFO L93 Difference]: Finished difference Result 1532 states and 2665 transitions. [2022-01-31 18:34:19,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-31 18:34:19,722 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 37 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:34:19,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:34:19,734 INFO L225 Difference]: With dead ends: 1532 [2022-01-31 18:34:19,734 INFO L226 Difference]: Without dead ends: 1101 [2022-01-31 18:34:19,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1849 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=415, Invalid=6725, Unknown=0, NotChecked=0, Total=7140 [2022-01-31 18:34:19,743 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 113 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 2708 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 2761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:34:19,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 144 Invalid, 2761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 2708 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 18:34:19,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2022-01-31 18:34:20,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 1017. [2022-01-31 18:34:20,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1017 states, 918 states have (on average 1.2145969498910676) internal successors, (1115), 962 states have internal predecessors, (1115), 50 states have call successors, (50), 6 states have call predecessors, (50), 48 states have return successors, (808), 48 states have call predecessors, (808), 49 states have call successors, (808) [2022-01-31 18:34:20,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1973 transitions. [2022-01-31 18:34:20,092 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1973 transitions. Word has length 110 [2022-01-31 18:34:20,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:34:20,092 INFO L470 AbstractCegarLoop]: Abstraction has 1017 states and 1973 transitions. [2022-01-31 18:34:20,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 37 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:20,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1973 transitions. [2022-01-31 18:34:20,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:34:20,105 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:34:20,105 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:34:20,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-31 18:34:20,105 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:34:20,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:34:20,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1494112719, now seen corresponding path program 13 times [2022-01-31 18:34:20,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:34:20,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582513751] [2022-01-31 18:34:20,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:34:20,107 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:34:20,107 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:34:20,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:34:20,109 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:34:20,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:20,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:34:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:20,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:34:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:20,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:34:20,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:21,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:34:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:21,156 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 18:34:21,156 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:34:21,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582513751] [2022-01-31 18:34:21,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [582513751] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:34:21,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:34:21,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-01-31 18:34:21,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742402646] [2022-01-31 18:34:21,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:34:21,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-31 18:34:21,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:34:21,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-31 18:34:21,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1310, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 18:34:21,159 INFO L87 Difference]: Start difference. First operand 1017 states and 1973 transitions. Second operand has 38 states, 38 states have (on average 2.1052631578947367) internal successors, (80), 37 states have internal predecessors, (80), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:23,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:34:23,792 INFO L93 Difference]: Finished difference Result 1942 states and 3157 transitions. [2022-01-31 18:34:23,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-31 18:34:23,792 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.1052631578947367) internal successors, (80), 37 states have internal predecessors, (80), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:34:23,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:34:23,804 INFO L225 Difference]: With dead ends: 1942 [2022-01-31 18:34:23,804 INFO L226 Difference]: Without dead ends: 1303 [2022-01-31 18:34:23,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2202 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=587, Invalid=8343, Unknown=0, NotChecked=0, Total=8930 [2022-01-31 18:34:23,814 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 123 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 3274 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 3325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 3274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:34:23,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 168 Invalid, 3325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 3274 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-31 18:34:23,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2022-01-31 18:34:24,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1112. [2022-01-31 18:34:24,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 1010 states have (on average 1.2118811881188118) internal successors, (1224), 1055 states have internal predecessors, (1224), 50 states have call successors, (50), 8 states have call predecessors, (50), 51 states have return successors, (729), 48 states have call predecessors, (729), 49 states have call successors, (729) [2022-01-31 18:34:24,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 2003 transitions. [2022-01-31 18:34:24,245 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 2003 transitions. Word has length 110 [2022-01-31 18:34:24,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:34:24,245 INFO L470 AbstractCegarLoop]: Abstraction has 1112 states and 2003 transitions. [2022-01-31 18:34:24,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.1052631578947367) internal successors, (80), 37 states have internal predecessors, (80), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:24,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 2003 transitions. [2022-01-31 18:34:24,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:34:24,256 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:34:24,256 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 12, 5, 5, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:34:24,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-31 18:34:24,257 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:34:24,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:34:24,257 INFO L85 PathProgramCache]: Analyzing trace with hash 805395815, now seen corresponding path program 14 times [2022-01-31 18:34:24,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:34:24,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372091831] [2022-01-31 18:34:24,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:34:24,262 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:34:24,262 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:34:24,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:34:24,264 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:34:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:24,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:34:24,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:24,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:34:24,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:24,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:34:24,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:24,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:34:24,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:24,885 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 18:34:24,886 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:34:24,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372091831] [2022-01-31 18:34:24,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1372091831] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:34:24,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:34:24,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-01-31 18:34:24,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976224437] [2022-01-31 18:34:24,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:34:24,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-31 18:34:24,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:34:24,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-31 18:34:24,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2022-01-31 18:34:24,901 INFO L87 Difference]: Start difference. First operand 1112 states and 2003 transitions. Second operand has 25 states, 25 states have (on average 2.68) internal successors, (67), 24 states have internal predecessors, (67), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:26,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:34:26,550 INFO L93 Difference]: Finished difference Result 1689 states and 2867 transitions. [2022-01-31 18:34:26,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-31 18:34:26,550 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.68) internal successors, (67), 24 states have internal predecessors, (67), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:34:26,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:34:26,560 INFO L225 Difference]: With dead ends: 1689 [2022-01-31 18:34:26,560 INFO L226 Difference]: Without dead ends: 1204 [2022-01-31 18:34:26,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=347, Invalid=3435, Unknown=0, NotChecked=0, Total=3782 [2022-01-31 18:34:26,571 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 113 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 1861 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 1912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 18:34:26,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 123 Invalid, 1912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1861 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 18:34:26,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2022-01-31 18:34:26,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 1098. [2022-01-31 18:34:26,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1098 states, 1001 states have (on average 1.1998001998001997) internal successors, (1201), 1041 states have internal predecessors, (1201), 50 states have call successors, (50), 8 states have call predecessors, (50), 46 states have return successors, (695), 48 states have call predecessors, (695), 49 states have call successors, (695) [2022-01-31 18:34:26,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 1946 transitions. [2022-01-31 18:34:26,913 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 1946 transitions. Word has length 110 [2022-01-31 18:34:26,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:34:26,913 INFO L470 AbstractCegarLoop]: Abstraction has 1098 states and 1946 transitions. [2022-01-31 18:34:26,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.68) internal successors, (67), 24 states have internal predecessors, (67), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:26,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 1946 transitions. [2022-01-31 18:34:26,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:34:26,924 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:34:26,924 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 11, 5, 5, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:34:26,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-31 18:34:26,924 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:34:26,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:34:26,925 INFO L85 PathProgramCache]: Analyzing trace with hash 452307433, now seen corresponding path program 15 times [2022-01-31 18:34:26,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:34:26,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533965837] [2022-01-31 18:34:26,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:34:26,927 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:34:26,927 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:34:26,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:34:26,929 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:34:26,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:27,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:34:27,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:27,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:34:27,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:27,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:34:27,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:27,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:34:27,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:27,925 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-31 18:34:27,925 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:34:27,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533965837] [2022-01-31 18:34:27,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [533965837] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:34:27,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:34:27,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-01-31 18:34:27,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681280994] [2022-01-31 18:34:27,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:34:27,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-31 18:34:27,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:34:27,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-31 18:34:27,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1093, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 18:34:27,927 INFO L87 Difference]: Start difference. First operand 1098 states and 1946 transitions. Second operand has 35 states, 35 states have (on average 2.2) internal successors, (77), 34 states have internal predecessors, (77), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:29,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:34:29,907 INFO L93 Difference]: Finished difference Result 1563 states and 2623 transitions. [2022-01-31 18:34:29,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-31 18:34:29,908 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 34 states have internal predecessors, (77), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:34:29,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:34:29,915 INFO L225 Difference]: With dead ends: 1563 [2022-01-31 18:34:29,915 INFO L226 Difference]: Without dead ends: 1172 [2022-01-31 18:34:29,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1757 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=492, Invalid=5828, Unknown=0, NotChecked=0, Total=6320 [2022-01-31 18:34:29,921 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 129 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 2074 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 2143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 2074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:34:29,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 114 Invalid, 2143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 2074 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 18:34:29,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2022-01-31 18:34:30,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1093. [2022-01-31 18:34:30,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 996 states have (on average 1.1937751004016064) internal successors, (1189), 1036 states have internal predecessors, (1189), 50 states have call successors, (50), 8 states have call predecessors, (50), 46 states have return successors, (639), 48 states have call predecessors, (639), 49 states have call successors, (639) [2022-01-31 18:34:30,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1878 transitions. [2022-01-31 18:34:30,278 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1878 transitions. Word has length 110 [2022-01-31 18:34:30,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:34:30,278 INFO L470 AbstractCegarLoop]: Abstraction has 1093 states and 1878 transitions. [2022-01-31 18:34:30,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 34 states have internal predecessors, (77), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:30,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1878 transitions. [2022-01-31 18:34:30,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:34:30,289 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:34:30,290 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 10, 5, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:34:30,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-31 18:34:30,290 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:34:30,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:34:30,290 INFO L85 PathProgramCache]: Analyzing trace with hash -558809817, now seen corresponding path program 16 times [2022-01-31 18:34:30,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:34:30,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484653349] [2022-01-31 18:34:30,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:34:30,292 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:34:30,292 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:34:30,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:34:30,293 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:34:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:30,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:34:30,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:30,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:34:30,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:31,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:34:31,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:32,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:34:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:32,798 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 18:34:32,798 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:34:32,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484653349] [2022-01-31 18:34:32,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1484653349] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:34:32,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:34:32,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2022-01-31 18:34:32,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632808505] [2022-01-31 18:34:32,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:34:32,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-01-31 18:34:32,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:34:32,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-01-31 18:34:32,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=3703, Unknown=0, NotChecked=0, Total=3906 [2022-01-31 18:34:32,800 INFO L87 Difference]: Start difference. First operand 1093 states and 1878 transitions. Second operand has 63 states, 62 states have (on average 1.5) internal successors, (93), 59 states have internal predecessors, (93), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:36,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:34:36,363 INFO L93 Difference]: Finished difference Result 1271 states and 2195 transitions. [2022-01-31 18:34:36,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-31 18:34:36,363 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 1.5) internal successors, (93), 59 states have internal predecessors, (93), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:34:36,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:34:36,376 INFO L225 Difference]: With dead ends: 1271 [2022-01-31 18:34:36,377 INFO L226 Difference]: Without dead ends: 1267 [2022-01-31 18:34:36,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3588 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=747, Invalid=14015, Unknown=0, NotChecked=0, Total=14762 [2022-01-31 18:34:36,385 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 143 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 3384 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 3491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 3384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-31 18:34:36,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 197 Invalid, 3491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 3384 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-31 18:34:36,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2022-01-31 18:34:36,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1139. [2022-01-31 18:34:36,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1036 states have (on average 1.194015444015444) internal successors, (1237), 1080 states have internal predecessors, (1237), 52 states have call successors, (52), 8 states have call predecessors, (52), 50 states have return successors, (691), 50 states have call predecessors, (691), 51 states have call successors, (691) [2022-01-31 18:34:36,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1980 transitions. [2022-01-31 18:34:36,770 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1980 transitions. Word has length 110 [2022-01-31 18:34:36,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:34:36,771 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 1980 transitions. [2022-01-31 18:34:36,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 1.5) internal successors, (93), 59 states have internal predecessors, (93), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:36,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1980 transitions. [2022-01-31 18:34:36,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:34:36,783 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:34:36,783 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:34:36,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-31 18:34:36,783 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:34:36,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:34:36,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1707571369, now seen corresponding path program 17 times [2022-01-31 18:34:36,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:34:36,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699852565] [2022-01-31 18:34:36,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:34:36,785 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:34:36,785 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:34:36,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:34:36,787 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:34:36,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:36,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:34:36,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:36,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:34:36,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:37,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:34:37,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:37,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:34:37,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:37,441 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 18:34:37,441 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:34:37,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699852565] [2022-01-31 18:34:37,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1699852565] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:34:37,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:34:37,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-31 18:34:37,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053915481] [2022-01-31 18:34:37,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:34:37,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-31 18:34:37,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:34:37,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-31 18:34:37,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-01-31 18:34:37,443 INFO L87 Difference]: Start difference. First operand 1139 states and 1980 transitions. Second operand has 27 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 26 states have internal predecessors, (71), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:38,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:34:38,938 INFO L93 Difference]: Finished difference Result 1779 states and 3006 transitions. [2022-01-31 18:34:38,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-31 18:34:38,938 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 26 states have internal predecessors, (71), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:34:38,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:34:38,952 INFO L225 Difference]: With dead ends: 1779 [2022-01-31 18:34:38,952 INFO L226 Difference]: Without dead ends: 1159 [2022-01-31 18:34:38,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 894 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=387, Invalid=3519, Unknown=0, NotChecked=0, Total=3906 [2022-01-31 18:34:38,963 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 117 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 1252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:34:38,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 92 Invalid, 1252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1196 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 18:34:38,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2022-01-31 18:34:39,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1131. [2022-01-31 18:34:39,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1028 states have (on average 1.188715953307393) internal successors, (1222), 1072 states have internal predecessors, (1222), 52 states have call successors, (52), 8 states have call predecessors, (52), 50 states have return successors, (691), 50 states have call predecessors, (691), 51 states have call successors, (691) [2022-01-31 18:34:39,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 1965 transitions. [2022-01-31 18:34:39,265 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 1965 transitions. Word has length 110 [2022-01-31 18:34:39,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:34:39,266 INFO L470 AbstractCegarLoop]: Abstraction has 1131 states and 1965 transitions. [2022-01-31 18:34:39,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 26 states have internal predecessors, (71), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:39,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 1965 transitions. [2022-01-31 18:34:39,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:34:39,278 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:34:39,278 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 8, 7, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:34:39,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-31 18:34:39,278 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:34:39,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:34:39,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1200610517, now seen corresponding path program 18 times [2022-01-31 18:34:39,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:34:39,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808855320] [2022-01-31 18:34:39,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:34:39,280 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:34:39,280 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:34:39,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:34:39,282 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:34:39,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:39,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:34:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:39,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:34:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:39,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:34:39,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:40,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:34:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:40,256 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 18:34:40,256 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:34:40,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808855320] [2022-01-31 18:34:40,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [808855320] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:34:40,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:34:40,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-31 18:34:40,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390888199] [2022-01-31 18:34:40,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:34:40,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-31 18:34:40,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:34:40,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-31 18:34:40,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1167, Unknown=0, NotChecked=0, Total=1260 [2022-01-31 18:34:40,257 INFO L87 Difference]: Start difference. First operand 1131 states and 1965 transitions. Second operand has 36 states, 35 states have (on average 2.257142857142857) internal successors, (79), 34 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:41,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:34:41,970 INFO L93 Difference]: Finished difference Result 1793 states and 2899 transitions. [2022-01-31 18:34:41,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-31 18:34:41,971 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.257142857142857) internal successors, (79), 34 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:34:41,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:34:41,981 INFO L225 Difference]: With dead ends: 1793 [2022-01-31 18:34:41,981 INFO L226 Difference]: Without dead ends: 1273 [2022-01-31 18:34:41,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1512 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=395, Invalid=5457, Unknown=0, NotChecked=0, Total=5852 [2022-01-31 18:34:41,987 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 119 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 1619 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 1673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 18:34:41,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 108 Invalid, 1673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1619 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 18:34:41,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2022-01-31 18:34:42,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1113. [2022-01-31 18:34:42,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 1009 states have (on average 1.1892963330029733) internal successors, (1200), 1054 states have internal predecessors, (1200), 52 states have call successors, (52), 8 states have call predecessors, (52), 51 states have return successors, (694), 50 states have call predecessors, (694), 51 states have call successors, (694) [2022-01-31 18:34:42,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1946 transitions. [2022-01-31 18:34:42,258 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1946 transitions. Word has length 110 [2022-01-31 18:34:42,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:34:42,258 INFO L470 AbstractCegarLoop]: Abstraction has 1113 states and 1946 transitions. [2022-01-31 18:34:42,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.257142857142857) internal successors, (79), 34 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:42,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1946 transitions. [2022-01-31 18:34:42,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:34:42,267 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:34:42,267 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 12, 5, 5, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:34:42,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-31 18:34:42,267 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:34:42,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:34:42,268 INFO L85 PathProgramCache]: Analyzing trace with hash 757206631, now seen corresponding path program 19 times [2022-01-31 18:34:42,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:34:42,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024424753] [2022-01-31 18:34:42,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:34:42,269 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:34:42,269 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:34:42,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:34:42,271 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:34:42,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:42,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:34:42,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:42,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:34:42,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:42,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:34:42,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:42,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:34:42,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:42,975 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 18:34:42,975 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:34:42,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024424753] [2022-01-31 18:34:42,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2024424753] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:34:42,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:34:42,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-31 18:34:42,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025068809] [2022-01-31 18:34:42,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:34:42,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-31 18:34:42,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:34:42,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-31 18:34:42,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-01-31 18:34:42,976 INFO L87 Difference]: Start difference. First operand 1113 states and 1946 transitions. Second operand has 27 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 26 states have internal predecessors, (71), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:44,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:34:44,606 INFO L93 Difference]: Finished difference Result 1832 states and 2901 transitions. [2022-01-31 18:34:44,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-31 18:34:44,606 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 26 states have internal predecessors, (71), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:34:44,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:34:44,617 INFO L225 Difference]: With dead ends: 1832 [2022-01-31 18:34:44,617 INFO L226 Difference]: Without dead ends: 1332 [2022-01-31 18:34:44,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 933 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=400, Invalid=3632, Unknown=0, NotChecked=0, Total=4032 [2022-01-31 18:34:44,626 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 111 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 1657 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 1708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 18:34:44,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 124 Invalid, 1708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1657 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 18:34:44,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2022-01-31 18:34:44,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 1265. [2022-01-31 18:34:44,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1265 states, 1155 states have (on average 1.1904761904761905) internal successors, (1375), 1204 states have internal predecessors, (1375), 52 states have call successors, (52), 10 states have call predecessors, (52), 57 states have return successors, (644), 50 states have call predecessors, (644), 51 states have call successors, (644) [2022-01-31 18:34:44,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 2071 transitions. [2022-01-31 18:34:44,914 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 2071 transitions. Word has length 110 [2022-01-31 18:34:44,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:34:44,914 INFO L470 AbstractCegarLoop]: Abstraction has 1265 states and 2071 transitions. [2022-01-31 18:34:44,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 26 states have internal predecessors, (71), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:44,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 2071 transitions. [2022-01-31 18:34:44,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:34:44,925 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:34:44,925 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 11, 5, 5, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:34:44,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-31 18:34:44,926 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:34:44,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:34:44,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1271379479, now seen corresponding path program 20 times [2022-01-31 18:34:44,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:34:44,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523992077] [2022-01-31 18:34:44,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:34:44,928 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:34:44,928 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:34:44,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:34:44,929 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:34:44,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:45,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:34:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:45,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:34:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:45,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:34:45,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:45,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:34:45,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:45,953 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-31 18:34:45,953 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:34:45,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523992077] [2022-01-31 18:34:45,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [523992077] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:34:45,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:34:45,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-31 18:34:45,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788947241] [2022-01-31 18:34:45,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:34:45,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-31 18:34:45,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:34:45,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-31 18:34:45,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1224, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 18:34:45,955 INFO L87 Difference]: Start difference. First operand 1265 states and 2071 transitions. Second operand has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 36 states have internal predecessors, (81), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:48,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:34:48,157 INFO L93 Difference]: Finished difference Result 1394 states and 2417 transitions. [2022-01-31 18:34:48,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-31 18:34:48,158 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 36 states have internal predecessors, (81), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:34:48,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:34:48,166 INFO L225 Difference]: With dead ends: 1394 [2022-01-31 18:34:48,166 INFO L226 Difference]: Without dead ends: 1390 [2022-01-31 18:34:48,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1982 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=558, Invalid=6248, Unknown=0, NotChecked=0, Total=6806 [2022-01-31 18:34:48,173 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 132 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 2550 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 2628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:34:48,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 143 Invalid, 2628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2550 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 18:34:48,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2022-01-31 18:34:48,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 1279. [2022-01-31 18:34:48,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1279 states, 1165 states have (on average 1.1939914163090128) internal successors, (1391), 1219 states have internal predecessors, (1391), 54 states have call successors, (54), 10 states have call predecessors, (54), 59 states have return successors, (662), 49 states have call predecessors, (662), 53 states have call successors, (662) [2022-01-31 18:34:48,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 2107 transitions. [2022-01-31 18:34:48,520 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 2107 transitions. Word has length 110 [2022-01-31 18:34:48,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:34:48,520 INFO L470 AbstractCegarLoop]: Abstraction has 1279 states and 2107 transitions. [2022-01-31 18:34:48,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 36 states have internal predecessors, (81), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:48,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 2107 transitions. [2022-01-31 18:34:48,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:34:48,529 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:34:48,529 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 10, 5, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:34:48,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-31 18:34:48,529 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:34:48,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:34:48,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1029443111, now seen corresponding path program 21 times [2022-01-31 18:34:48,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:34:48,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497018285] [2022-01-31 18:34:48,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:34:48,531 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:34:48,531 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:34:48,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:34:48,532 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:34:48,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:49,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:34:49,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:49,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:34:49,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:50,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:34:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:50,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:34:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:51,260 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-31 18:34:51,261 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:34:51,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497018285] [2022-01-31 18:34:51,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1497018285] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:34:51,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:34:51,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2022-01-31 18:34:51,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143104567] [2022-01-31 18:34:51,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:34:51,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-01-31 18:34:51,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:34:51,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-01-31 18:34:51,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=3249, Unknown=0, NotChecked=0, Total=3422 [2022-01-31 18:34:51,263 INFO L87 Difference]: Start difference. First operand 1279 states and 2107 transitions. Second operand has 59 states, 58 states have (on average 1.5862068965517242) internal successors, (92), 55 states have internal predecessors, (92), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:55,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:34:55,011 INFO L93 Difference]: Finished difference Result 1587 states and 2713 transitions. [2022-01-31 18:34:55,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-31 18:34:55,011 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 1.5862068965517242) internal successors, (92), 55 states have internal predecessors, (92), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:34:55,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:34:55,035 INFO L225 Difference]: With dead ends: 1587 [2022-01-31 18:34:55,035 INFO L226 Difference]: Without dead ends: 1583 [2022-01-31 18:34:55,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3829 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=692, Invalid=14070, Unknown=0, NotChecked=0, Total=14762 [2022-01-31 18:34:55,044 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 182 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 2819 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 2926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:34:55,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 165 Invalid, 2926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 2819 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-31 18:34:55,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2022-01-31 18:34:55,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1365. [2022-01-31 18:34:55,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1237 states have (on average 1.1940177849636218) internal successors, (1477), 1301 states have internal predecessors, (1477), 60 states have call successors, (60), 10 states have call predecessors, (60), 67 states have return successors, (848), 53 states have call predecessors, (848), 59 states have call successors, (848) [2022-01-31 18:34:55,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 2385 transitions. [2022-01-31 18:34:55,446 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 2385 transitions. Word has length 110 [2022-01-31 18:34:55,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:34:55,446 INFO L470 AbstractCegarLoop]: Abstraction has 1365 states and 2385 transitions. [2022-01-31 18:34:55,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 1.5862068965517242) internal successors, (92), 55 states have internal predecessors, (92), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:55,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 2385 transitions. [2022-01-31 18:34:55,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:34:55,455 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:34:55,455 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:34:55,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-31 18:34:55,456 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:34:55,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:34:55,456 INFO L85 PathProgramCache]: Analyzing trace with hash 18325861, now seen corresponding path program 22 times [2022-01-31 18:34:55,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:34:55,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031634305] [2022-01-31 18:34:55,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:34:55,457 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:34:55,457 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:34:55,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:34:55,459 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:34:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:55,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:34:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:55,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:34:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:56,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:34:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:56,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:34:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:56,561 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-31 18:34:56,561 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:34:56,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031634305] [2022-01-31 18:34:56,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2031634305] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:34:56,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:34:56,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-01-31 18:34:56,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662368883] [2022-01-31 18:34:56,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:34:56,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-31 18:34:56,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:34:56,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-31 18:34:56,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1305, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 18:34:56,563 INFO L87 Difference]: Start difference. First operand 1365 states and 2385 transitions. Second operand has 38 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 37 states have internal predecessors, (81), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:59,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:34:59,877 INFO L93 Difference]: Finished difference Result 2122 states and 3524 transitions. [2022-01-31 18:34:59,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-31 18:34:59,877 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 37 states have internal predecessors, (81), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:34:59,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:34:59,890 INFO L225 Difference]: With dead ends: 2122 [2022-01-31 18:34:59,890 INFO L226 Difference]: Without dead ends: 1644 [2022-01-31 18:34:59,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3644 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=790, Invalid=10982, Unknown=0, NotChecked=0, Total=11772 [2022-01-31 18:34:59,898 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 127 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 3511 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 3572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-31 18:34:59,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 144 Invalid, 3572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 3511 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-31 18:34:59,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2022-01-31 18:35:00,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 1534. [2022-01-31 18:35:00,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1534 states, 1399 states have (on average 1.1794138670478913) internal successors, (1650), 1460 states have internal predecessors, (1650), 63 states have call successors, (63), 11 states have call predecessors, (63), 71 states have return successors, (791), 62 states have call predecessors, (791), 62 states have call successors, (791) [2022-01-31 18:35:00,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1534 states to 1534 states and 2504 transitions. [2022-01-31 18:35:00,425 INFO L78 Accepts]: Start accepts. Automaton has 1534 states and 2504 transitions. Word has length 110 [2022-01-31 18:35:00,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:00,426 INFO L470 AbstractCegarLoop]: Abstraction has 1534 states and 2504 transitions. [2022-01-31 18:35:00,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 37 states have internal predecessors, (81), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:00,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1534 states and 2504 transitions. [2022-01-31 18:35:00,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:35:00,440 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:00,440 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:00,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-31 18:35:00,440 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:00,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:00,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1091482725, now seen corresponding path program 23 times [2022-01-31 18:35:00,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:00,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460698736] [2022-01-31 18:35:00,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:00,442 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:00,442 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:00,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:00,445 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:00,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:00,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:00,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:00,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:35:00,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:00,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:35:00,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:00,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:35:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:00,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 18:35:00,971 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:00,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460698736] [2022-01-31 18:35:00,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [460698736] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:00,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:00,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-31 18:35:00,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089205952] [2022-01-31 18:35:00,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:00,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-31 18:35:00,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:00,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-31 18:35:00,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2022-01-31 18:35:00,973 INFO L87 Difference]: Start difference. First operand 1534 states and 2504 transitions. Second operand has 26 states, 26 states have (on average 2.730769230769231) internal successors, (71), 25 states have internal predecessors, (71), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:02,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:02,555 INFO L93 Difference]: Finished difference Result 2317 states and 3922 transitions. [2022-01-31 18:35:02,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-31 18:35:02,556 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.730769230769231) internal successors, (71), 25 states have internal predecessors, (71), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:35:02,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:02,570 INFO L225 Difference]: With dead ends: 2317 [2022-01-31 18:35:02,570 INFO L226 Difference]: Without dead ends: 2093 [2022-01-31 18:35:02,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=311, Invalid=2041, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 18:35:02,579 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 98 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:02,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 104 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 18:35:02,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2093 states. [2022-01-31 18:35:03,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2093 to 1647. [2022-01-31 18:35:03,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1647 states, 1500 states have (on average 1.1713333333333333) internal successors, (1757), 1559 states have internal predecessors, (1757), 76 states have call successors, (76), 12 states have call predecessors, (76), 70 states have return successors, (844), 75 states have call predecessors, (844), 75 states have call successors, (844) [2022-01-31 18:35:03,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1647 states to 1647 states and 2677 transitions. [2022-01-31 18:35:03,067 INFO L78 Accepts]: Start accepts. Automaton has 1647 states and 2677 transitions. Word has length 110 [2022-01-31 18:35:03,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:03,068 INFO L470 AbstractCegarLoop]: Abstraction has 1647 states and 2677 transitions. [2022-01-31 18:35:03,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.730769230769231) internal successors, (71), 25 states have internal predecessors, (71), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:03,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1647 states and 2677 transitions. [2022-01-31 18:35:03,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:35:03,077 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:03,078 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:03,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-31 18:35:03,078 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:03,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:03,078 INFO L85 PathProgramCache]: Analyzing trace with hash 676354729, now seen corresponding path program 24 times [2022-01-31 18:35:03,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:03,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965431084] [2022-01-31 18:35:03,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:03,079 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:03,079 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:03,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:03,081 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:03,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:03,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:03,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:03,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:35:03,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:03,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:35:03,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:03,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:35:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:03,764 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:35:03,764 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:03,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965431084] [2022-01-31 18:35:03,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [965431084] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:03,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:03,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-31 18:35:03,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192013898] [2022-01-31 18:35:03,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:03,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-31 18:35:03,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:03,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-31 18:35:03,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2022-01-31 18:35:03,767 INFO L87 Difference]: Start difference. First operand 1647 states and 2677 transitions. Second operand has 28 states, 28 states have (on average 2.5357142857142856) internal successors, (71), 27 states have internal predecessors, (71), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:06,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:06,013 INFO L93 Difference]: Finished difference Result 2239 states and 3384 transitions. [2022-01-31 18:35:06,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-31 18:35:06,013 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.5357142857142856) internal successors, (71), 27 states have internal predecessors, (71), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:35:06,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:06,027 INFO L225 Difference]: With dead ends: 2239 [2022-01-31 18:35:06,027 INFO L226 Difference]: Without dead ends: 1748 [2022-01-31 18:35:06,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1102 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=401, Invalid=4429, Unknown=0, NotChecked=0, Total=4830 [2022-01-31 18:35:06,036 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 98 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 2409 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 2446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:06,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 142 Invalid, 2446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 2409 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 18:35:06,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1748 states. [2022-01-31 18:35:06,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1748 to 1644. [2022-01-31 18:35:06,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1644 states, 1498 states have (on average 1.1675567423230975) internal successors, (1749), 1556 states have internal predecessors, (1749), 76 states have call successors, (76), 12 states have call predecessors, (76), 69 states have return successors, (821), 75 states have call predecessors, (821), 75 states have call successors, (821) [2022-01-31 18:35:06,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1644 states to 1644 states and 2646 transitions. [2022-01-31 18:35:06,522 INFO L78 Accepts]: Start accepts. Automaton has 1644 states and 2646 transitions. Word has length 110 [2022-01-31 18:35:06,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:06,522 INFO L470 AbstractCegarLoop]: Abstraction has 1644 states and 2646 transitions. [2022-01-31 18:35:06,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.5357142857142856) internal successors, (71), 27 states have internal predecessors, (71), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:06,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1644 states and 2646 transitions. [2022-01-31 18:35:06,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:35:06,536 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:06,537 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 8, 7, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:06,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-31 18:35:06,537 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:06,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:06,537 INFO L85 PathProgramCache]: Analyzing trace with hash 2063140139, now seen corresponding path program 25 times [2022-01-31 18:35:06,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:06,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033887172] [2022-01-31 18:35:06,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:06,539 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:06,539 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:06,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:06,540 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:06,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:06,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:06,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:06,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:35:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:07,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:35:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:07,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:35:07,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:07,578 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:35:07,578 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:07,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033887172] [2022-01-31 18:35:07,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1033887172] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:07,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:07,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-31 18:35:07,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012623737] [2022-01-31 18:35:07,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:07,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-31 18:35:07,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:07,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-31 18:35:07,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1243, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 18:35:07,580 INFO L87 Difference]: Start difference. First operand 1644 states and 2646 transitions. Second operand has 37 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 35 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:10,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:10,022 INFO L93 Difference]: Finished difference Result 2240 states and 3348 transitions. [2022-01-31 18:35:10,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-31 18:35:10,022 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 35 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:35:10,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:10,031 INFO L225 Difference]: With dead ends: 2240 [2022-01-31 18:35:10,032 INFO L226 Difference]: Without dead ends: 1779 [2022-01-31 18:35:10,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1606 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=395, Invalid=6085, Unknown=0, NotChecked=0, Total=6480 [2022-01-31 18:35:10,037 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 103 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 2662 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 2705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:10,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 132 Invalid, 2705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2662 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 18:35:10,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1779 states. [2022-01-31 18:35:10,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1779 to 1652. [2022-01-31 18:35:10,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1652 states, 1506 states have (on average 1.1666666666666667) internal successors, (1757), 1564 states have internal predecessors, (1757), 76 states have call successors, (76), 12 states have call predecessors, (76), 69 states have return successors, (821), 75 states have call predecessors, (821), 75 states have call successors, (821) [2022-01-31 18:35:10,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1652 states to 1652 states and 2654 transitions. [2022-01-31 18:35:10,507 INFO L78 Accepts]: Start accepts. Automaton has 1652 states and 2654 transitions. Word has length 110 [2022-01-31 18:35:10,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:10,507 INFO L470 AbstractCegarLoop]: Abstraction has 1652 states and 2654 transitions. [2022-01-31 18:35:10,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 35 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:10,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1652 states and 2654 transitions. [2022-01-31 18:35:10,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:35:10,516 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:10,517 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 8, 7, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:10,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-31 18:35:10,517 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:10,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:10,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1645743533, now seen corresponding path program 26 times [2022-01-31 18:35:10,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:10,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984046313] [2022-01-31 18:35:10,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:10,518 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:10,518 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:10,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:10,520 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:10,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:10,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:10,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:10,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:35:10,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:10,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:35:10,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:10,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:35:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:10,906 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:35:10,906 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:10,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984046313] [2022-01-31 18:35:10,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1984046313] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:10,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:10,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-31 18:35:10,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707753629] [2022-01-31 18:35:10,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:10,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-31 18:35:10,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:10,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-31 18:35:10,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2022-01-31 18:35:10,907 INFO L87 Difference]: Start difference. First operand 1652 states and 2654 transitions. Second operand has 22 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 20 states have internal predecessors, (64), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:11,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:11,963 INFO L93 Difference]: Finished difference Result 2338 states and 3577 transitions. [2022-01-31 18:35:11,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-31 18:35:11,964 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 20 states have internal predecessors, (64), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:35:11,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:11,977 INFO L225 Difference]: With dead ends: 2338 [2022-01-31 18:35:11,977 INFO L226 Difference]: Without dead ends: 1869 [2022-01-31 18:35:11,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=171, Invalid=1311, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 18:35:11,985 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 88 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:11,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 83 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:35:11,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1869 states. [2022-01-31 18:35:12,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1869 to 1695. [2022-01-31 18:35:12,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1695 states, 1546 states have (on average 1.166882276843467) internal successors, (1804), 1607 states have internal predecessors, (1804), 76 states have call successors, (76), 12 states have call predecessors, (76), 72 states have return successors, (788), 75 states have call predecessors, (788), 75 states have call successors, (788) [2022-01-31 18:35:12,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 2668 transitions. [2022-01-31 18:35:12,477 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 2668 transitions. Word has length 110 [2022-01-31 18:35:12,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:12,477 INFO L470 AbstractCegarLoop]: Abstraction has 1695 states and 2668 transitions. [2022-01-31 18:35:12,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 20 states have internal predecessors, (64), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:12,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 2668 transitions. [2022-01-31 18:35:12,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:35:12,486 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:12,486 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:12,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-31 18:35:12,486 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:12,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:12,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1916665957, now seen corresponding path program 27 times [2022-01-31 18:35:12,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:12,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97530406] [2022-01-31 18:35:12,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:12,488 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:12,488 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:12,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:12,489 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:12,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:12,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:35:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:12,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:35:12,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:13,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:35:13,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:13,209 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:35:13,209 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:13,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97530406] [2022-01-31 18:35:13,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [97530406] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:13,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:13,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-31 18:35:13,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780409592] [2022-01-31 18:35:13,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:13,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-31 18:35:13,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:13,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-31 18:35:13,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2022-01-31 18:35:13,210 INFO L87 Difference]: Start difference. First operand 1695 states and 2668 transitions. Second operand has 28 states, 28 states have (on average 2.5357142857142856) internal successors, (71), 27 states have internal predecessors, (71), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:15,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:15,551 INFO L93 Difference]: Finished difference Result 2239 states and 3301 transitions. [2022-01-31 18:35:15,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-31 18:35:15,551 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.5357142857142856) internal successors, (71), 27 states have internal predecessors, (71), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:35:15,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:15,560 INFO L225 Difference]: With dead ends: 2239 [2022-01-31 18:35:15,560 INFO L226 Difference]: Without dead ends: 1765 [2022-01-31 18:35:15,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1139 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=411, Invalid=4559, Unknown=0, NotChecked=0, Total=4970 [2022-01-31 18:35:15,567 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 94 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 2468 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 2506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:15,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 146 Invalid, 2506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2468 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 18:35:15,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1765 states. [2022-01-31 18:35:16,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1765 to 1695. [2022-01-31 18:35:16,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1695 states, 1548 states have (on average 1.1608527131782946) internal successors, (1797), 1607 states have internal predecessors, (1797), 76 states have call successors, (76), 12 states have call predecessors, (76), 70 states have return successors, (753), 75 states have call predecessors, (753), 75 states have call successors, (753) [2022-01-31 18:35:16,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 2626 transitions. [2022-01-31 18:35:16,063 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 2626 transitions. Word has length 110 [2022-01-31 18:35:16,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:16,064 INFO L470 AbstractCegarLoop]: Abstraction has 1695 states and 2626 transitions. [2022-01-31 18:35:16,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.5357142857142856) internal successors, (71), 27 states have internal predecessors, (71), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:16,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 2626 transitions. [2022-01-31 18:35:16,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:35:16,073 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:16,073 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 8, 7, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:16,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-31 18:35:16,073 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:16,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:16,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1563577575, now seen corresponding path program 28 times [2022-01-31 18:35:16,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:16,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164240163] [2022-01-31 18:35:16,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:16,075 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:16,075 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:16,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:16,076 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:16,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:16,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:16,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:16,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:35:16,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:16,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:35:16,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:16,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:35:16,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:17,117 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-31 18:35:17,117 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:17,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164240163] [2022-01-31 18:35:17,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [164240163] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:17,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:17,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-01-31 18:35:17,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445882174] [2022-01-31 18:35:17,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:17,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-31 18:35:17,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:17,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-31 18:35:17,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1306, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 18:35:17,118 INFO L87 Difference]: Start difference. First operand 1695 states and 2626 transitions. Second operand has 38 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 37 states have internal predecessors, (81), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:20,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:20,026 INFO L93 Difference]: Finished difference Result 2162 states and 3282 transitions. [2022-01-31 18:35:20,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-31 18:35:20,026 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 37 states have internal predecessors, (81), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:35:20,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:20,035 INFO L225 Difference]: With dead ends: 2162 [2022-01-31 18:35:20,035 INFO L226 Difference]: Without dead ends: 1739 [2022-01-31 18:35:20,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2639 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=602, Invalid=8518, Unknown=0, NotChecked=0, Total=9120 [2022-01-31 18:35:20,041 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 124 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 2992 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 3059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:20,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 143 Invalid, 3059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 2992 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-31 18:35:20,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1739 states. [2022-01-31 18:35:20,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1739 to 1695. [2022-01-31 18:35:20,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1695 states, 1548 states have (on average 1.1569767441860466) internal successors, (1791), 1607 states have internal predecessors, (1791), 76 states have call successors, (76), 12 states have call predecessors, (76), 70 states have return successors, (723), 75 states have call predecessors, (723), 75 states have call successors, (723) [2022-01-31 18:35:20,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 2590 transitions. [2022-01-31 18:35:20,562 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 2590 transitions. Word has length 110 [2022-01-31 18:35:20,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:20,563 INFO L470 AbstractCegarLoop]: Abstraction has 1695 states and 2590 transitions. [2022-01-31 18:35:20,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 37 states have internal predecessors, (81), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:20,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 2590 transitions. [2022-01-31 18:35:20,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:35:20,572 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:20,572 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 8, 7, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:20,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-31 18:35:20,572 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:20,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:20,572 INFO L85 PathProgramCache]: Analyzing trace with hash 552460325, now seen corresponding path program 29 times [2022-01-31 18:35:20,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:20,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149317683] [2022-01-31 18:35:20,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:20,574 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:20,574 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:20,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:20,575 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:20,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:21,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:21,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:21,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:35:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:21,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:35:21,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:22,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:35:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:22,784 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:35:22,784 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:22,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149317683] [2022-01-31 18:35:22,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [149317683] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:22,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:22,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2022-01-31 18:35:22,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735597337] [2022-01-31 18:35:22,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:22,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-01-31 18:35:22,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:22,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-01-31 18:35:22,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=3452, Unknown=0, NotChecked=0, Total=3660 [2022-01-31 18:35:22,787 INFO L87 Difference]: Start difference. First operand 1695 states and 2590 transitions. Second operand has 61 states, 60 states have (on average 1.55) internal successors, (93), 57 states have internal predecessors, (93), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:26,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:26,241 INFO L93 Difference]: Finished difference Result 1823 states and 2811 transitions. [2022-01-31 18:35:26,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-31 18:35:26,242 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 1.55) internal successors, (93), 57 states have internal predecessors, (93), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:35:26,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:26,252 INFO L225 Difference]: With dead ends: 1823 [2022-01-31 18:35:26,252 INFO L226 Difference]: Without dead ends: 1819 [2022-01-31 18:35:26,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2921 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=707, Invalid=11503, Unknown=0, NotChecked=0, Total=12210 [2022-01-31 18:35:26,261 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 145 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 2466 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 2563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 2466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:26,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 154 Invalid, 2563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 2466 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 18:35:26,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1819 states. [2022-01-31 18:35:26,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1819 to 1723. [2022-01-31 18:35:26,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1723 states, 1572 states have (on average 1.1571246819338423) internal successors, (1819), 1633 states have internal predecessors, (1819), 78 states have call successors, (78), 12 states have call predecessors, (78), 72 states have return successors, (760), 77 states have call predecessors, (760), 77 states have call successors, (760) [2022-01-31 18:35:26,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1723 states to 1723 states and 2657 transitions. [2022-01-31 18:35:26,950 INFO L78 Accepts]: Start accepts. Automaton has 1723 states and 2657 transitions. Word has length 110 [2022-01-31 18:35:26,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:26,950 INFO L470 AbstractCegarLoop]: Abstraction has 1723 states and 2657 transitions. [2022-01-31 18:35:26,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 1.55) internal successors, (93), 57 states have internal predecessors, (93), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:26,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1723 states and 2657 transitions. [2022-01-31 18:35:26,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:35:26,966 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:26,966 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:26,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-31 18:35:26,966 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:26,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:26,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1939245735, now seen corresponding path program 30 times [2022-01-31 18:35:26,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:26,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690215340] [2022-01-31 18:35:26,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:26,968 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:26,968 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:26,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:26,970 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:26,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:27,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:27,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:27,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:35:27,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:27,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:35:27,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:27,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:35:27,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:27,605 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:35:27,605 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:27,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690215340] [2022-01-31 18:35:27,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [690215340] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:27,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:27,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-01-31 18:35:27,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969129008] [2022-01-31 18:35:27,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:27,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-31 18:35:27,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:27,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-31 18:35:27,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2022-01-31 18:35:27,606 INFO L87 Difference]: Start difference. First operand 1723 states and 2657 transitions. Second operand has 29 states, 28 states have (on average 2.75) internal successors, (77), 27 states have internal predecessors, (77), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:29,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:29,271 INFO L93 Difference]: Finished difference Result 2530 states and 3713 transitions. [2022-01-31 18:35:29,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-31 18:35:29,272 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.75) internal successors, (77), 27 states have internal predecessors, (77), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:35:29,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:29,293 INFO L225 Difference]: With dead ends: 2530 [2022-01-31 18:35:29,293 INFO L226 Difference]: Without dead ends: 1790 [2022-01-31 18:35:29,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 930 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=329, Invalid=3331, Unknown=0, NotChecked=0, Total=3660 [2022-01-31 18:35:29,305 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 100 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:29,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 115 Invalid, 1315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 18:35:29,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2022-01-31 18:35:29,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1687. [2022-01-31 18:35:29,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1539 states have (on average 1.1546458739441197) internal successors, (1777), 1597 states have internal predecessors, (1777), 78 states have call successors, (78), 12 states have call predecessors, (78), 69 states have return successors, (739), 77 states have call predecessors, (739), 77 states have call successors, (739) [2022-01-31 18:35:29,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2594 transitions. [2022-01-31 18:35:29,814 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2594 transitions. Word has length 110 [2022-01-31 18:35:29,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:29,814 INFO L470 AbstractCegarLoop]: Abstraction has 1687 states and 2594 transitions. [2022-01-31 18:35:29,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.75) internal successors, (77), 27 states have internal predecessors, (77), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:29,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2594 transitions. [2022-01-31 18:35:29,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:35:29,824 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:29,824 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 13, 5, 5, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:29,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-31 18:35:29,824 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:29,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:29,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1877957929, now seen corresponding path program 31 times [2022-01-31 18:35:29,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:29,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380231382] [2022-01-31 18:35:29,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:29,826 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:29,826 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:29,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:29,828 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:29,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:29,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:29,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:35:29,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:30,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:35:30,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:30,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:35:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:30,436 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:35:30,436 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:30,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380231382] [2022-01-31 18:35:30,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1380231382] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:30,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:30,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-01-31 18:35:30,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114772972] [2022-01-31 18:35:30,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:30,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-31 18:35:30,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:30,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-31 18:35:30,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2022-01-31 18:35:30,438 INFO L87 Difference]: Start difference. First operand 1687 states and 2594 transitions. Second operand has 29 states, 28 states have (on average 2.642857142857143) internal successors, (74), 27 states have internal predecessors, (74), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:31,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:31,906 INFO L93 Difference]: Finished difference Result 2361 states and 3524 transitions. [2022-01-31 18:35:31,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-31 18:35:31,907 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.642857142857143) internal successors, (74), 27 states have internal predecessors, (74), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:35:31,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:31,920 INFO L225 Difference]: With dead ends: 2361 [2022-01-31 18:35:31,920 INFO L226 Difference]: Without dead ends: 1776 [2022-01-31 18:35:31,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 763 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=281, Invalid=2799, Unknown=0, NotChecked=0, Total=3080 [2022-01-31 18:35:31,932 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 99 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:31,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 105 Invalid, 1226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1177 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 18:35:31,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1776 states. [2022-01-31 18:35:32,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1776 to 1679. [2022-01-31 18:35:32,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1679 states, 1531 states have (on average 1.1541476159372959) internal successors, (1767), 1589 states have internal predecessors, (1767), 78 states have call successors, (78), 12 states have call predecessors, (78), 69 states have return successors, (715), 77 states have call predecessors, (715), 77 states have call successors, (715) [2022-01-31 18:35:32,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1679 states to 1679 states and 2560 transitions. [2022-01-31 18:35:32,522 INFO L78 Accepts]: Start accepts. Automaton has 1679 states and 2560 transitions. Word has length 110 [2022-01-31 18:35:32,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:32,522 INFO L470 AbstractCegarLoop]: Abstraction has 1679 states and 2560 transitions. [2022-01-31 18:35:32,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.642857142857143) internal successors, (74), 27 states have internal predecessors, (74), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:32,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1679 states and 2560 transitions. [2022-01-31 18:35:32,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:35:32,537 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:32,537 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 12, 5, 5, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:32,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-31 18:35:32,538 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:32,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:32,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1030223957, now seen corresponding path program 32 times [2022-01-31 18:35:32,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:32,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653253075] [2022-01-31 18:35:32,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:32,540 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:32,540 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:32,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:32,542 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:32,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:32,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:32,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:35:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:33,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:35:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:33,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:35:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:33,559 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-31 18:35:33,560 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:33,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653253075] [2022-01-31 18:35:33,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1653253075] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:33,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:33,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-01-31 18:35:33,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281034447] [2022-01-31 18:35:33,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:33,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-31 18:35:33,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:33,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-31 18:35:33,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1608, Unknown=0, NotChecked=0, Total=1722 [2022-01-31 18:35:33,561 INFO L87 Difference]: Start difference. First operand 1679 states and 2560 transitions. Second operand has 42 states, 41 states have (on average 1.975609756097561) internal successors, (81), 40 states have internal predecessors, (81), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:35,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:35,793 INFO L93 Difference]: Finished difference Result 1916 states and 2855 transitions. [2022-01-31 18:35:35,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-31 18:35:35,793 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.975609756097561) internal successors, (81), 40 states have internal predecessors, (81), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:35:35,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:35,804 INFO L225 Difference]: With dead ends: 1916 [2022-01-31 18:35:35,804 INFO L226 Difference]: Without dead ends: 1912 [2022-01-31 18:35:35,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1928 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=485, Invalid=6825, Unknown=0, NotChecked=0, Total=7310 [2022-01-31 18:35:35,811 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 150 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 1805 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 1899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:35,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 117 Invalid, 1899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1805 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 18:35:35,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2022-01-31 18:35:36,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 1723. [2022-01-31 18:35:36,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1723 states, 1573 states have (on average 1.151303242212333) internal successors, (1811), 1629 states have internal predecessors, (1811), 80 states have call successors, (80), 12 states have call predecessors, (80), 69 states have return successors, (728), 81 states have call predecessors, (728), 79 states have call successors, (728) [2022-01-31 18:35:36,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1723 states to 1723 states and 2619 transitions. [2022-01-31 18:35:36,350 INFO L78 Accepts]: Start accepts. Automaton has 1723 states and 2619 transitions. Word has length 110 [2022-01-31 18:35:36,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:36,350 INFO L470 AbstractCegarLoop]: Abstraction has 1723 states and 2619 transitions. [2022-01-31 18:35:36,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 1.975609756097561) internal successors, (81), 40 states have internal predecessors, (81), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:36,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1723 states and 2619 transitions. [2022-01-31 18:35:36,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:35:36,360 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:36,360 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 10, 5, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:36,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-31 18:35:36,361 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:36,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:36,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1204396249, now seen corresponding path program 33 times [2022-01-31 18:35:36,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:36,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107737614] [2022-01-31 18:35:36,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:36,362 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:36,362 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:36,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:36,364 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:36,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:36,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:35:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:37,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:35:37,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:37,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:35:38,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:38,555 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-31 18:35:38,556 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:38,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107737614] [2022-01-31 18:35:38,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [107737614] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:38,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:38,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2022-01-31 18:35:38,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130154213] [2022-01-31 18:35:38,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:38,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-01-31 18:35:38,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:38,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-01-31 18:35:38,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=3252, Unknown=0, NotChecked=0, Total=3422 [2022-01-31 18:35:38,557 INFO L87 Difference]: Start difference. First operand 1723 states and 2619 transitions. Second operand has 59 states, 58 states have (on average 1.603448275862069) internal successors, (93), 55 states have internal predecessors, (93), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:42,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:42,266 INFO L93 Difference]: Finished difference Result 2084 states and 3249 transitions. [2022-01-31 18:35:42,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-31 18:35:42,267 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 1.603448275862069) internal successors, (93), 55 states have internal predecessors, (93), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:35:42,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:42,280 INFO L225 Difference]: With dead ends: 2084 [2022-01-31 18:35:42,281 INFO L226 Difference]: Without dead ends: 2080 [2022-01-31 18:35:42,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3447 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=623, Invalid=12949, Unknown=0, NotChecked=0, Total=13572 [2022-01-31 18:35:42,293 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 169 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 2910 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 3009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:42,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 175 Invalid, 3009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2910 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-31 18:35:42,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2080 states. [2022-01-31 18:35:43,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2080 to 1800. [2022-01-31 18:35:43,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1800 states, 1639 states have (on average 1.1519219035997559) internal successors, (1888), 1703 states have internal predecessors, (1888), 83 states have call successors, (83), 12 states have call predecessors, (83), 77 states have return successors, (851), 84 states have call predecessors, (851), 82 states have call successors, (851) [2022-01-31 18:35:43,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 2822 transitions. [2022-01-31 18:35:43,025 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 2822 transitions. Word has length 110 [2022-01-31 18:35:43,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:43,025 INFO L470 AbstractCegarLoop]: Abstraction has 1800 states and 2822 transitions. [2022-01-31 18:35:43,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 1.603448275862069) internal successors, (93), 55 states have internal predecessors, (93), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:43,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 2822 transitions. [2022-01-31 18:35:43,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:35:43,036 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:43,036 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:43,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-31 18:35:43,036 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:43,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:43,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1096426341, now seen corresponding path program 34 times [2022-01-31 18:35:43,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:43,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874032344] [2022-01-31 18:35:43,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:43,038 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:43,038 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:43,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:43,039 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:43,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:43,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:35:43,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:43,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:35:43,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:43,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:35:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:44,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:35:44,216 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:44,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874032344] [2022-01-31 18:35:44,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1874032344] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:44,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:44,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-01-31 18:35:44,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44631482] [2022-01-31 18:35:44,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:44,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-31 18:35:44,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:44,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-31 18:35:44,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1686, Unknown=0, NotChecked=0, Total=1806 [2022-01-31 18:35:44,217 INFO L87 Difference]: Start difference. First operand 1800 states and 2822 transitions. Second operand has 43 states, 43 states have (on average 1.9534883720930232) internal successors, (84), 41 states have internal predecessors, (84), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:46,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:46,902 INFO L93 Difference]: Finished difference Result 1893 states and 2960 transitions. [2022-01-31 18:35:46,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-31 18:35:46,902 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.9534883720930232) internal successors, (84), 41 states have internal predecessors, (84), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:35:46,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:46,913 INFO L225 Difference]: With dead ends: 1893 [2022-01-31 18:35:46,913 INFO L226 Difference]: Without dead ends: 1889 [2022-01-31 18:35:46,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2112 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=461, Invalid=7195, Unknown=0, NotChecked=0, Total=7656 [2022-01-31 18:35:46,921 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 105 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 2793 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 2857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:46,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 137 Invalid, 2857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 2793 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 18:35:46,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2022-01-31 18:35:47,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1848. [2022-01-31 18:35:47,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1848 states, 1683 states have (on average 1.1479500891265597) internal successors, (1932), 1747 states have internal predecessors, (1932), 87 states have call successors, (87), 12 states have call predecessors, (87), 77 states have return successors, (883), 88 states have call predecessors, (883), 86 states have call successors, (883) [2022-01-31 18:35:47,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1848 states to 1848 states and 2902 transitions. [2022-01-31 18:35:47,572 INFO L78 Accepts]: Start accepts. Automaton has 1848 states and 2902 transitions. Word has length 110 [2022-01-31 18:35:47,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:47,572 INFO L470 AbstractCegarLoop]: Abstraction has 1848 states and 2902 transitions. [2022-01-31 18:35:47,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.9534883720930232) internal successors, (84), 41 states have internal predecessors, (84), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:47,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1848 states and 2902 transitions. [2022-01-31 18:35:47,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:35:47,584 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:47,584 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:47,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-31 18:35:47,585 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:47,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:47,585 INFO L85 PathProgramCache]: Analyzing trace with hash 490041837, now seen corresponding path program 35 times [2022-01-31 18:35:47,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:47,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722876283] [2022-01-31 18:35:47,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:47,586 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:47,586 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:47,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:47,587 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:47,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:47,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:47,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:35:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:48,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:35:48,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:48,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:35:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:48,698 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:35:48,698 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:48,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722876283] [2022-01-31 18:35:48,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1722876283] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:48,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:48,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-31 18:35:48,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267855017] [2022-01-31 18:35:48,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:48,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-31 18:35:48,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:48,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-31 18:35:48,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1243, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 18:35:48,700 INFO L87 Difference]: Start difference. First operand 1848 states and 2902 transitions. Second operand has 37 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 35 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:51,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:51,361 INFO L93 Difference]: Finished difference Result 2449 states and 3689 transitions. [2022-01-31 18:35:51,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-31 18:35:51,362 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 35 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:35:51,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:51,376 INFO L225 Difference]: With dead ends: 2449 [2022-01-31 18:35:51,377 INFO L226 Difference]: Without dead ends: 1927 [2022-01-31 18:35:51,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1599 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=401, Invalid=6079, Unknown=0, NotChecked=0, Total=6480 [2022-01-31 18:35:51,390 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 98 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2984 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 3027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:51,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 159 Invalid, 3027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2984 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 18:35:51,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1927 states. [2022-01-31 18:35:52,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1927 to 1837. [2022-01-31 18:35:52,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1837 states, 1673 states have (on average 1.1464435146443515) internal successors, (1918), 1736 states have internal predecessors, (1918), 87 states have call successors, (87), 12 states have call predecessors, (87), 76 states have return successors, (881), 88 states have call predecessors, (881), 86 states have call successors, (881) [2022-01-31 18:35:52,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1837 states to 1837 states and 2886 transitions. [2022-01-31 18:35:52,035 INFO L78 Accepts]: Start accepts. Automaton has 1837 states and 2886 transitions. Word has length 110 [2022-01-31 18:35:52,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:52,035 INFO L470 AbstractCegarLoop]: Abstraction has 1837 states and 2886 transitions. [2022-01-31 18:35:52,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 35 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:52,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1837 states and 2886 transitions. [2022-01-31 18:35:52,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:35:52,047 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:52,048 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:52,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-31 18:35:52,048 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:52,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:52,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1507206743, now seen corresponding path program 36 times [2022-01-31 18:35:52,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:52,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810465222] [2022-01-31 18:35:52,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:52,050 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:52,050 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:52,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:52,051 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:52,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:52,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:52,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:35:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:52,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:35:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:52,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:35:52,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:53,156 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:35:53,157 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:53,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810465222] [2022-01-31 18:35:53,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1810465222] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:53,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:53,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-01-31 18:35:53,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112965906] [2022-01-31 18:35:53,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:53,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-31 18:35:53,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:53,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-31 18:35:53,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1450, Unknown=0, NotChecked=0, Total=1560 [2022-01-31 18:35:53,160 INFO L87 Difference]: Start difference. First operand 1837 states and 2886 transitions. Second operand has 40 states, 39 states have (on average 2.1794871794871793) internal successors, (85), 38 states have internal predecessors, (85), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 18:35:55,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:55,961 INFO L93 Difference]: Finished difference Result 2163 states and 3391 transitions. [2022-01-31 18:35:55,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-31 18:35:55,961 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.1794871794871793) internal successors, (85), 38 states have internal predecessors, (85), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 110 [2022-01-31 18:35:55,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:56,017 INFO L225 Difference]: With dead ends: 2163 [2022-01-31 18:35:56,018 INFO L226 Difference]: Without dead ends: 2159 [2022-01-31 18:35:56,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2191 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=525, Invalid=7485, Unknown=0, NotChecked=0, Total=8010 [2022-01-31 18:35:56,027 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 134 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 2566 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 2635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 2566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:56,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 138 Invalid, 2635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 2566 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 18:35:56,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2159 states. [2022-01-31 18:35:56,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2159 to 1955. [2022-01-31 18:35:56,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1955 states, 1784 states have (on average 1.1418161434977578) internal successors, (2037), 1845 states have internal predecessors, (2037), 92 states have call successors, (92), 12 states have call predecessors, (92), 78 states have return successors, (925), 97 states have call predecessors, (925), 91 states have call successors, (925) [2022-01-31 18:35:56,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1955 states to 1955 states and 3054 transitions. [2022-01-31 18:35:56,639 INFO L78 Accepts]: Start accepts. Automaton has 1955 states and 3054 transitions. Word has length 110 [2022-01-31 18:35:56,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:56,639 INFO L470 AbstractCegarLoop]: Abstraction has 1955 states and 3054 transitions. [2022-01-31 18:35:56,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.1794871794871793) internal successors, (85), 38 states have internal predecessors, (85), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 18:35:56,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1955 states and 3054 transitions. [2022-01-31 18:35:56,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:35:56,652 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:56,652 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 8, 7, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:56,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-31 18:35:56,652 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:56,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:56,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1900233753, now seen corresponding path program 37 times [2022-01-31 18:35:56,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:56,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622955945] [2022-01-31 18:35:56,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:56,654 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:56,654 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:56,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:56,655 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:56,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:57,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:57,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:35:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:58,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:35:58,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:59,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:35:59,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:59,638 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-31 18:35:59,638 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:59,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622955945] [2022-01-31 18:35:59,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [622955945] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:59,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:59,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2022-01-31 18:35:59,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691845850] [2022-01-31 18:35:59,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:59,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-01-31 18:35:59,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:59,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-01-31 18:35:59,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=3250, Unknown=0, NotChecked=0, Total=3422 [2022-01-31 18:35:59,639 INFO L87 Difference]: Start difference. First operand 1955 states and 3054 transitions. Second operand has 59 states, 58 states have (on average 1.4655172413793103) internal successors, (85), 55 states have internal predecessors, (85), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:03,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:03,973 INFO L93 Difference]: Finished difference Result 2045 states and 3209 transitions. [2022-01-31 18:36:03,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-31 18:36:03,974 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 1.4655172413793103) internal successors, (85), 55 states have internal predecessors, (85), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:36:03,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:03,996 INFO L225 Difference]: With dead ends: 2045 [2022-01-31 18:36:03,997 INFO L226 Difference]: Without dead ends: 2041 [2022-01-31 18:36:04,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2942 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=660, Invalid=12450, Unknown=0, NotChecked=0, Total=13110 [2022-01-31 18:36:04,017 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 117 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 3373 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 3461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:04,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 187 Invalid, 3461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3373 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-31 18:36:04,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2041 states. [2022-01-31 18:36:04,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2041 to 2002. [2022-01-31 18:36:04,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2002 states, 1825 states have (on average 1.1397260273972603) internal successors, (2080), 1887 states have internal predecessors, (2080), 97 states have call successors, (97), 12 states have call predecessors, (97), 79 states have return successors, (988), 102 states have call predecessors, (988), 96 states have call successors, (988) [2022-01-31 18:36:04,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2002 states to 2002 states and 3165 transitions. [2022-01-31 18:36:04,769 INFO L78 Accepts]: Start accepts. Automaton has 2002 states and 3165 transitions. Word has length 110 [2022-01-31 18:36:04,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:04,769 INFO L470 AbstractCegarLoop]: Abstraction has 2002 states and 3165 transitions. [2022-01-31 18:36:04,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 1.4655172413793103) internal successors, (85), 55 states have internal predecessors, (85), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:04,770 INFO L276 IsEmpty]: Start isEmpty. Operand 2002 states and 3165 transitions. [2022-01-31 18:36:04,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:36:04,783 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:04,784 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 8, 7, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:04,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-01-31 18:36:04,784 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:04,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:04,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1681379035, now seen corresponding path program 38 times [2022-01-31 18:36:04,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:04,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807612565] [2022-01-31 18:36:04,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:04,785 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:04,786 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:04,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:04,788 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:05,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:05,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:05,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:36:05,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:06,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:36:06,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:07,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:36:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:08,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:36:08,027 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:08,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807612565] [2022-01-31 18:36:08,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1807612565] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:08,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:08,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2022-01-31 18:36:08,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370088134] [2022-01-31 18:36:08,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:08,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-01-31 18:36:08,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:08,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-01-31 18:36:08,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=4104, Unknown=0, NotChecked=0, Total=4290 [2022-01-31 18:36:08,029 INFO L87 Difference]: Start difference. First operand 2002 states and 3165 transitions. Second operand has 66 states, 65 states have (on average 1.523076923076923) internal successors, (99), 62 states have internal predecessors, (99), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:13,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:13,503 INFO L93 Difference]: Finished difference Result 2086 states and 3293 transitions. [2022-01-31 18:36:13,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-31 18:36:13,503 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 1.523076923076923) internal successors, (99), 62 states have internal predecessors, (99), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:36:13,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:13,519 INFO L225 Difference]: With dead ends: 2086 [2022-01-31 18:36:13,520 INFO L226 Difference]: Without dead ends: 2082 [2022-01-31 18:36:13,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3523 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=791, Invalid=15979, Unknown=0, NotChecked=0, Total=16770 [2022-01-31 18:36:13,535 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 169 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 3907 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 4026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 3907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:13,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 212 Invalid, 4026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 3907 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-31 18:36:13,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2082 states. [2022-01-31 18:36:14,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2082 to 2004. [2022-01-31 18:36:14,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2004 states, 1826 states have (on average 1.1396495071193866) internal successors, (2081), 1888 states have internal predecessors, (2081), 98 states have call successors, (98), 12 states have call predecessors, (98), 79 states have return successors, (997), 103 states have call predecessors, (997), 97 states have call successors, (997) [2022-01-31 18:36:14,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2004 states to 2004 states and 3176 transitions. [2022-01-31 18:36:14,285 INFO L78 Accepts]: Start accepts. Automaton has 2004 states and 3176 transitions. Word has length 110 [2022-01-31 18:36:14,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:14,285 INFO L470 AbstractCegarLoop]: Abstraction has 2004 states and 3176 transitions. [2022-01-31 18:36:14,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 1.523076923076923) internal successors, (99), 62 states have internal predecessors, (99), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:14,286 INFO L276 IsEmpty]: Start isEmpty. Operand 2004 states and 3176 transitions. [2022-01-31 18:36:14,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:36:14,300 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:14,300 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 8, 7, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:14,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-01-31 18:36:14,300 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:14,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:14,301 INFO L85 PathProgramCache]: Analyzing trace with hash 759174443, now seen corresponding path program 39 times [2022-01-31 18:36:14,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:14,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109292926] [2022-01-31 18:36:14,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:14,302 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:14,302 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:14,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:14,303 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:14,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:14,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:14,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:36:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:14,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:36:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:15,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:36:15,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:15,137 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:36:15,137 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:15,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109292926] [2022-01-31 18:36:15,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1109292926] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:15,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:15,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-01-31 18:36:15,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24677295] [2022-01-31 18:36:15,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:15,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-31 18:36:15,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:15,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-31 18:36:15,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1035, Unknown=0, NotChecked=0, Total=1122 [2022-01-31 18:36:15,138 INFO L87 Difference]: Start difference. First operand 2004 states and 3176 transitions. Second operand has 34 states, 33 states have (on average 2.393939393939394) internal successors, (79), 32 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:17,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:17,252 INFO L93 Difference]: Finished difference Result 2640 states and 3959 transitions. [2022-01-31 18:36:17,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-31 18:36:17,253 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.393939393939394) internal successors, (79), 32 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:36:17,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:17,267 INFO L225 Difference]: With dead ends: 2640 [2022-01-31 18:36:17,267 INFO L226 Difference]: Without dead ends: 2047 [2022-01-31 18:36:17,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1193 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=372, Invalid=4598, Unknown=0, NotChecked=0, Total=4970 [2022-01-31 18:36:17,278 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 99 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 1870 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 1907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:17,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 123 Invalid, 1907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1870 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 18:36:17,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2047 states. [2022-01-31 18:36:17,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2047 to 1964. [2022-01-31 18:36:17,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1964 states, 1790 states have (on average 1.1379888268156424) internal successors, (2037), 1849 states have internal predecessors, (2037), 97 states have call successors, (97), 12 states have call predecessors, (97), 76 states have return successors, (973), 102 states have call predecessors, (973), 96 states have call successors, (973) [2022-01-31 18:36:17,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1964 states to 1964 states and 3107 transitions. [2022-01-31 18:36:17,936 INFO L78 Accepts]: Start accepts. Automaton has 1964 states and 3107 transitions. Word has length 110 [2022-01-31 18:36:17,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:17,936 INFO L470 AbstractCegarLoop]: Abstraction has 1964 states and 3107 transitions. [2022-01-31 18:36:17,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.393939393939394) internal successors, (79), 32 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:17,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1964 states and 3107 transitions. [2022-01-31 18:36:17,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:36:17,950 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:17,950 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 11, 5, 5, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:17,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-31 18:36:17,950 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:17,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:17,950 INFO L85 PathProgramCache]: Analyzing trace with hash -191190295, now seen corresponding path program 40 times [2022-01-31 18:36:17,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:17,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844297996] [2022-01-31 18:36:17,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:17,952 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:17,952 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:17,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:17,954 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:18,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:18,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:36:18,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:18,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:36:18,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:18,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:36:18,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:18,731 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:36:18,732 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:18,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844297996] [2022-01-31 18:36:18,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1844297996] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:18,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:18,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-01-31 18:36:18,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072236422] [2022-01-31 18:36:18,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:18,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-31 18:36:18,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:18,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-31 18:36:18,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1035, Unknown=0, NotChecked=0, Total=1122 [2022-01-31 18:36:18,733 INFO L87 Difference]: Start difference. First operand 1964 states and 3107 transitions. Second operand has 34 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:20,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:20,569 INFO L93 Difference]: Finished difference Result 2562 states and 3893 transitions. [2022-01-31 18:36:20,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-31 18:36:20,569 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:36:20,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:20,581 INFO L225 Difference]: With dead ends: 2562 [2022-01-31 18:36:20,581 INFO L226 Difference]: Without dead ends: 2029 [2022-01-31 18:36:20,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1004 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=324, Invalid=3966, Unknown=0, NotChecked=0, Total=4290 [2022-01-31 18:36:20,593 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 102 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 1424 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 1460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:20,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 99 Invalid, 1460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1424 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 18:36:20,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2022-01-31 18:36:21,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 1942. [2022-01-31 18:36:21,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1770 states have (on average 1.1372881355932203) internal successors, (2013), 1827 states have internal predecessors, (2013), 97 states have call successors, (97), 12 states have call predecessors, (97), 74 states have return successors, (957), 102 states have call predecessors, (957), 96 states have call successors, (957) [2022-01-31 18:36:21,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 3067 transitions. [2022-01-31 18:36:21,243 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 3067 transitions. Word has length 110 [2022-01-31 18:36:21,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:21,244 INFO L470 AbstractCegarLoop]: Abstraction has 1942 states and 3067 transitions. [2022-01-31 18:36:21,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:21,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 3067 transitions. [2022-01-31 18:36:21,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:36:21,257 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:21,257 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 10, 5, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:21,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-01-31 18:36:21,257 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:21,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:21,257 INFO L85 PathProgramCache]: Analyzing trace with hash 2075190891, now seen corresponding path program 41 times [2022-01-31 18:36:21,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:21,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069123479] [2022-01-31 18:36:21,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:21,258 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:21,258 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:21,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:21,260 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:21,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:21,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:21,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:21,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:36:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:21,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:36:21,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:21,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:36:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:22,317 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-31 18:36:22,317 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:22,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069123479] [2022-01-31 18:36:22,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1069123479] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:22,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:22,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-01-31 18:36:22,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950108260] [2022-01-31 18:36:22,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:22,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-31 18:36:22,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:22,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-31 18:36:22,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1378, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 18:36:22,319 INFO L87 Difference]: Start difference. First operand 1942 states and 3067 transitions. Second operand has 39 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 37 states have internal predecessors, (81), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:25,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:25,142 INFO L93 Difference]: Finished difference Result 2248 states and 3620 transitions. [2022-01-31 18:36:25,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-31 18:36:25,143 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 37 states have internal predecessors, (81), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:36:25,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:25,169 INFO L225 Difference]: With dead ends: 2248 [2022-01-31 18:36:25,169 INFO L226 Difference]: Without dead ends: 2244 [2022-01-31 18:36:25,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2174 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=521, Invalid=7489, Unknown=0, NotChecked=0, Total=8010 [2022-01-31 18:36:25,184 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 116 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 2624 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 2690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 2624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:25,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 143 Invalid, 2690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 2624 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 18:36:25,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2244 states. [2022-01-31 18:36:25,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2244 to 1852. [2022-01-31 18:36:25,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1852 states, 1683 states have (on average 1.1396316102198456) internal successors, (1918), 1744 states have internal predecessors, (1918), 96 states have call successors, (96), 12 states have call predecessors, (96), 72 states have return successors, (947), 95 states have call predecessors, (947), 95 states have call successors, (947) [2022-01-31 18:36:25,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1852 states to 1852 states and 2961 transitions. [2022-01-31 18:36:25,815 INFO L78 Accepts]: Start accepts. Automaton has 1852 states and 2961 transitions. Word has length 110 [2022-01-31 18:36:25,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:25,815 INFO L470 AbstractCegarLoop]: Abstraction has 1852 states and 2961 transitions. [2022-01-31 18:36:25,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 37 states have internal predecessors, (81), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:25,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1852 states and 2961 transitions. [2022-01-31 18:36:25,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:36:25,828 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:25,828 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:25,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-01-31 18:36:25,828 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:25,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:25,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1682163881, now seen corresponding path program 42 times [2022-01-31 18:36:25,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:25,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185425296] [2022-01-31 18:36:25,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:25,830 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:25,830 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:25,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:25,831 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:26,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:26,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:36:26,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:27,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:36:27,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:27,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:36:27,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:28,549 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-31 18:36:28,549 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:28,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185425296] [2022-01-31 18:36:28,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1185425296] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:28,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:28,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2022-01-31 18:36:28,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161726768] [2022-01-31 18:36:28,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:28,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-01-31 18:36:28,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:28,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-01-31 18:36:28,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=3734, Unknown=0, NotChecked=0, Total=3906 [2022-01-31 18:36:28,551 INFO L87 Difference]: Start difference. First operand 1852 states and 2961 transitions. Second operand has 63 states, 62 states have (on average 1.403225806451613) internal successors, (87), 59 states have internal predecessors, (87), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:33,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:33,295 INFO L93 Difference]: Finished difference Result 1976 states and 3145 transitions. [2022-01-31 18:36:33,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-31 18:36:33,295 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 1.403225806451613) internal successors, (87), 59 states have internal predecessors, (87), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:36:33,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:33,307 INFO L225 Difference]: With dead ends: 1976 [2022-01-31 18:36:33,307 INFO L226 Difference]: Without dead ends: 1972 [2022-01-31 18:36:33,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3747 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=731, Invalid=16039, Unknown=0, NotChecked=0, Total=16770 [2022-01-31 18:36:33,317 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 128 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 3509 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 3588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 3509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:33,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 201 Invalid, 3588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 3509 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-31 18:36:33,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2022-01-31 18:36:33,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 1878. [2022-01-31 18:36:33,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1705 states have (on average 1.1390029325513196) internal successors, (1942), 1768 states have internal predecessors, (1942), 98 states have call successors, (98), 12 states have call predecessors, (98), 74 states have return successors, (989), 97 states have call predecessors, (989), 97 states have call successors, (989) [2022-01-31 18:36:33,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 3029 transitions. [2022-01-31 18:36:33,956 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 3029 transitions. Word has length 110 [2022-01-31 18:36:33,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:33,956 INFO L470 AbstractCegarLoop]: Abstraction has 1878 states and 3029 transitions. [2022-01-31 18:36:33,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 1.403225806451613) internal successors, (87), 59 states have internal predecessors, (87), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:33,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 3029 transitions. [2022-01-31 18:36:33,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:36:33,969 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:33,969 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 8, 7, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:33,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-01-31 18:36:33,970 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:33,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:33,970 INFO L85 PathProgramCache]: Analyzing trace with hash -311980825, now seen corresponding path program 43 times [2022-01-31 18:36:33,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:33,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [472997086] [2022-01-31 18:36:33,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:33,971 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:33,971 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:33,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:33,973 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:34,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:34,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:34,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:36:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:35,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:36:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:35,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:36:35,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:36,035 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 18:36:36,035 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:36,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [472997086] [2022-01-31 18:36:36,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [472997086] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:36,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:36,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2022-01-31 18:36:36,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076489052] [2022-01-31 18:36:36,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:36,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-01-31 18:36:36,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:36,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-01-31 18:36:36,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=2814, Unknown=0, NotChecked=0, Total=2970 [2022-01-31 18:36:36,037 INFO L87 Difference]: Start difference. First operand 1878 states and 3029 transitions. Second operand has 55 states, 54 states have (on average 1.6296296296296295) internal successors, (88), 51 states have internal predecessors, (88), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:40,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:40,068 INFO L93 Difference]: Finished difference Result 2129 states and 3381 transitions. [2022-01-31 18:36:40,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-31 18:36:40,069 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 1.6296296296296295) internal successors, (88), 51 states have internal predecessors, (88), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:36:40,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:40,079 INFO L225 Difference]: With dead ends: 2129 [2022-01-31 18:36:40,080 INFO L226 Difference]: Without dead ends: 2125 [2022-01-31 18:36:40,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3052 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=614, Invalid=12042, Unknown=0, NotChecked=0, Total=12656 [2022-01-31 18:36:40,091 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 131 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 3676 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 3739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:40,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 177 Invalid, 3739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3676 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-31 18:36:40,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2022-01-31 18:36:40,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 1878. [2022-01-31 18:36:40,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1705 states have (on average 1.1390029325513196) internal successors, (1942), 1768 states have internal predecessors, (1942), 98 states have call successors, (98), 12 states have call predecessors, (98), 74 states have return successors, (988), 97 states have call predecessors, (988), 97 states have call successors, (988) [2022-01-31 18:36:40,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 3028 transitions. [2022-01-31 18:36:40,747 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 3028 transitions. Word has length 110 [2022-01-31 18:36:40,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:40,747 INFO L470 AbstractCegarLoop]: Abstraction has 1878 states and 3028 transitions. [2022-01-31 18:36:40,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 1.6296296296296295) internal successors, (88), 51 states have internal predecessors, (88), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:40,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 3028 transitions. [2022-01-31 18:36:40,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:36:40,761 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:40,761 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 8, 7, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:40,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-01-31 18:36:40,761 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:40,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:40,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1901018599, now seen corresponding path program 44 times [2022-01-31 18:36:40,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:40,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071181197] [2022-01-31 18:36:40,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:40,762 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:40,763 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:40,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:40,764 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:41,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:41,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:36:41,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:42,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:36:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:42,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:36:42,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:42,824 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:36:42,824 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:42,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071181197] [2022-01-31 18:36:42,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2071181197] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:42,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:42,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-01-31 18:36:42,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062716113] [2022-01-31 18:36:42,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:42,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-01-31 18:36:42,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:42,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-01-31 18:36:42,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=2721, Unknown=0, NotChecked=0, Total=2862 [2022-01-31 18:36:42,826 INFO L87 Difference]: Start difference. First operand 1878 states and 3028 transitions. Second operand has 54 states, 53 states have (on average 1.679245283018868) internal successors, (89), 50 states have internal predecessors, (89), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:47,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:47,507 INFO L93 Difference]: Finished difference Result 2165 states and 3500 transitions. [2022-01-31 18:36:47,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-31 18:36:47,507 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 1.679245283018868) internal successors, (89), 50 states have internal predecessors, (89), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:36:47,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:47,517 INFO L225 Difference]: With dead ends: 2165 [2022-01-31 18:36:47,518 INFO L226 Difference]: Without dead ends: 2161 [2022-01-31 18:36:47,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3091 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=667, Invalid=13139, Unknown=0, NotChecked=0, Total=13806 [2022-01-31 18:36:47,529 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 143 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 4012 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 4084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 4012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:47,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 188 Invalid, 4084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 4012 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-31 18:36:47,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2022-01-31 18:36:48,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 1878. [2022-01-31 18:36:48,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1705 states have (on average 1.1390029325513196) internal successors, (1942), 1768 states have internal predecessors, (1942), 98 states have call successors, (98), 12 states have call predecessors, (98), 74 states have return successors, (986), 97 states have call predecessors, (986), 97 states have call successors, (986) [2022-01-31 18:36:48,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 3026 transitions. [2022-01-31 18:36:48,209 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 3026 transitions. Word has length 110 [2022-01-31 18:36:48,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:48,209 INFO L470 AbstractCegarLoop]: Abstraction has 1878 states and 3026 transitions. [2022-01-31 18:36:48,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 1.679245283018868) internal successors, (89), 50 states have internal predecessors, (89), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:48,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 3026 transitions. [2022-01-31 18:36:48,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:36:48,223 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:48,223 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:48,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-01-31 18:36:48,223 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:48,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:48,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1104243357, now seen corresponding path program 45 times [2022-01-31 18:36:48,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:48,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284312947] [2022-01-31 18:36:48,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:48,225 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:48,225 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:48,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:48,227 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:48,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:48,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:48,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:36:48,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:48,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:36:48,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:48,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:36:48,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:49,214 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:36:49,214 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:49,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284312947] [2022-01-31 18:36:49,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [284312947] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:49,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:49,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-01-31 18:36:49,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675076712] [2022-01-31 18:36:49,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:49,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-31 18:36:49,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:49,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-31 18:36:49,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1375, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 18:36:49,215 INFO L87 Difference]: Start difference. First operand 1878 states and 3026 transitions. Second operand has 39 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 37 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:51,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:51,772 INFO L93 Difference]: Finished difference Result 2030 states and 3332 transitions. [2022-01-31 18:36:51,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-31 18:36:51,772 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 37 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:36:51,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:51,782 INFO L225 Difference]: With dead ends: 2030 [2022-01-31 18:36:51,782 INFO L226 Difference]: Without dead ends: 2026 [2022-01-31 18:36:51,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1540 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=391, Invalid=5461, Unknown=0, NotChecked=0, Total=5852 [2022-01-31 18:36:51,791 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 124 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 2411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:51,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 146 Invalid, 2411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 18:36:51,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2022-01-31 18:36:52,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 1950. [2022-01-31 18:36:52,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1950 states, 1771 states have (on average 1.134952004517222) internal successors, (2010), 1834 states have internal predecessors, (2010), 104 states have call successors, (104), 12 states have call predecessors, (104), 74 states have return successors, (1132), 103 states have call predecessors, (1132), 103 states have call successors, (1132) [2022-01-31 18:36:52,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1950 states to 1950 states and 3246 transitions. [2022-01-31 18:36:52,488 INFO L78 Accepts]: Start accepts. Automaton has 1950 states and 3246 transitions. Word has length 110 [2022-01-31 18:36:52,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:52,488 INFO L470 AbstractCegarLoop]: Abstraction has 1950 states and 3246 transitions. [2022-01-31 18:36:52,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 37 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:52,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1950 states and 3246 transitions. [2022-01-31 18:36:52,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:36:52,503 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:52,503 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 8, 7, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:52,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-01-31 18:36:52,503 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:52,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:52,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1329075499, now seen corresponding path program 46 times [2022-01-31 18:36:52,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:52,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133877146] [2022-01-31 18:36:52,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:52,505 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:52,505 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:52,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:52,506 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:52,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:52,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:52,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:36:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:52,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:36:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:53,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:36:53,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:53,373 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:36:53,373 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:53,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133877146] [2022-01-31 18:36:53,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2133877146] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:53,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:53,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-01-31 18:36:53,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524719308] [2022-01-31 18:36:53,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:53,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-31 18:36:53,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:53,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-31 18:36:53,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1107, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 18:36:53,374 INFO L87 Difference]: Start difference. First operand 1950 states and 3246 transitions. Second operand has 35 states, 34 states have (on average 2.323529411764706) internal successors, (79), 33 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:55,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:55,885 INFO L93 Difference]: Finished difference Result 2544 states and 3961 transitions. [2022-01-31 18:36:55,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-31 18:36:55,885 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.323529411764706) internal successors, (79), 33 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:36:55,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:55,897 INFO L225 Difference]: With dead ends: 2544 [2022-01-31 18:36:55,897 INFO L226 Difference]: Without dead ends: 2019 [2022-01-31 18:36:55,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1270 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=375, Invalid=5175, Unknown=0, NotChecked=0, Total=5550 [2022-01-31 18:36:55,908 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 102 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 2551 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 2591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:55,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 137 Invalid, 2591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2551 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 18:36:55,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2022-01-31 18:36:56,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 1943. [2022-01-31 18:36:56,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1943 states, 1765 states have (on average 1.1337110481586403) internal successors, (2001), 1827 states have internal predecessors, (2001), 104 states have call successors, (104), 12 states have call predecessors, (104), 73 states have return successors, (1127), 103 states have call predecessors, (1127), 103 states have call successors, (1127) [2022-01-31 18:36:56,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1943 states to 1943 states and 3232 transitions. [2022-01-31 18:36:56,598 INFO L78 Accepts]: Start accepts. Automaton has 1943 states and 3232 transitions. Word has length 110 [2022-01-31 18:36:56,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:56,598 INFO L470 AbstractCegarLoop]: Abstraction has 1943 states and 3232 transitions. [2022-01-31 18:36:56,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.323529411764706) internal successors, (79), 33 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:56,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1943 states and 3232 transitions. [2022-01-31 18:36:56,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:36:56,613 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:56,613 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:56,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-01-31 18:36:56,613 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:56,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:56,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1332553559, now seen corresponding path program 47 times [2022-01-31 18:36:56,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:56,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973767512] [2022-01-31 18:36:56,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:56,615 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:56,615 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:56,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:56,616 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:56,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:56,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:56,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:36:56,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:57,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:36:57,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:57,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:36:57,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:57,452 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-31 18:36:57,452 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:57,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973767512] [2022-01-31 18:36:57,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [973767512] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:57,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:57,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-01-31 18:36:57,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386053302] [2022-01-31 18:36:57,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:57,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-31 18:36:57,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:57,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-31 18:36:57,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1107, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 18:36:57,453 INFO L87 Difference]: Start difference. First operand 1943 states and 3232 transitions. Second operand has 35 states, 34 states have (on average 2.2941176470588234) internal successors, (78), 33 states have internal predecessors, (78), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:59,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:59,782 INFO L93 Difference]: Finished difference Result 2482 states and 3848 transitions. [2022-01-31 18:36:59,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-31 18:36:59,783 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.2941176470588234) internal successors, (78), 33 states have internal predecessors, (78), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:36:59,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:59,792 INFO L225 Difference]: With dead ends: 2482 [2022-01-31 18:36:59,792 INFO L226 Difference]: Without dead ends: 1989 [2022-01-31 18:36:59,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1063 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=327, Invalid=4503, Unknown=0, NotChecked=0, Total=4830 [2022-01-31 18:36:59,803 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 102 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 2297 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 2334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:59,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 140 Invalid, 2334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 2297 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 18:36:59,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1989 states. [2022-01-31 18:37:00,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1989 to 1919. [2022-01-31 18:37:00,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1919 states, 1743 states have (on average 1.1353987378083763) internal successors, (1979), 1805 states have internal predecessors, (1979), 102 states have call successors, (102), 12 states have call predecessors, (102), 73 states have return successors, (1074), 101 states have call predecessors, (1074), 101 states have call successors, (1074) [2022-01-31 18:37:00,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1919 states to 1919 states and 3155 transitions. [2022-01-31 18:37:00,514 INFO L78 Accepts]: Start accepts. Automaton has 1919 states and 3155 transitions. Word has length 110 [2022-01-31 18:37:00,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:00,514 INFO L470 AbstractCegarLoop]: Abstraction has 1919 states and 3155 transitions. [2022-01-31 18:37:00,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.2941176470588234) internal successors, (78), 33 states have internal predecessors, (78), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:00,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1919 states and 3155 transitions. [2022-01-31 18:37:00,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:37:00,528 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:00,529 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 8, 7, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:00,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-01-31 18:37:00,529 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:00,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:00,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1685641941, now seen corresponding path program 48 times [2022-01-31 18:37:00,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:00,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937500361] [2022-01-31 18:37:00,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:00,530 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:00,530 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:00,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:00,532 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:00,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:01,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:01,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:01,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:37:01,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:01,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:37:01,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:02,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:37:02,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:03,091 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-31 18:37:03,091 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:03,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937500361] [2022-01-31 18:37:03,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1937500361] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:03,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:03,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2022-01-31 18:37:03,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280665535] [2022-01-31 18:37:03,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:03,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-01-31 18:37:03,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:03,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-01-31 18:37:03,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=3382, Unknown=0, NotChecked=0, Total=3540 [2022-01-31 18:37:03,093 INFO L87 Difference]: Start difference. First operand 1919 states and 3155 transitions. Second operand has 60 states, 58 states have (on average 1.396551724137931) internal successors, (81), 56 states have internal predecessors, (81), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:07,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:07,841 INFO L93 Difference]: Finished difference Result 2033 states and 3362 transitions. [2022-01-31 18:37:07,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-31 18:37:07,841 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 58 states have (on average 1.396551724137931) internal successors, (81), 56 states have internal predecessors, (81), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:37:07,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:07,854 INFO L225 Difference]: With dead ends: 2033 [2022-01-31 18:37:07,854 INFO L226 Difference]: Without dead ends: 2029 [2022-01-31 18:37:07,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2574 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=529, Invalid=11461, Unknown=0, NotChecked=0, Total=11990 [2022-01-31 18:37:07,865 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 104 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 4370 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 4448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 4370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:07,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 218 Invalid, 4448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 4370 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-31 18:37:07,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2022-01-31 18:37:08,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 1940. [2022-01-31 18:37:08,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1940 states, 1761 states have (on average 1.135718341851221) internal successors, (2000), 1824 states have internal predecessors, (2000), 104 states have call successors, (104), 12 states have call predecessors, (104), 74 states have return successors, (1139), 103 states have call predecessors, (1139), 103 states have call successors, (1139) [2022-01-31 18:37:08,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1940 states to 1940 states and 3243 transitions. [2022-01-31 18:37:08,585 INFO L78 Accepts]: Start accepts. Automaton has 1940 states and 3243 transitions. Word has length 110 [2022-01-31 18:37:08,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:08,586 INFO L470 AbstractCegarLoop]: Abstraction has 1940 states and 3243 transitions. [2022-01-31 18:37:08,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 58 states have (on average 1.396551724137931) internal successors, (81), 56 states have internal predecessors, (81), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:08,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1940 states and 3243 transitions. [2022-01-31 18:37:08,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:37:08,600 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:08,600 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 8, 7, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:08,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-01-31 18:37:08,601 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:08,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:08,601 INFO L85 PathProgramCache]: Analyzing trace with hash -2078668951, now seen corresponding path program 49 times [2022-01-31 18:37:08,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:08,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365358056] [2022-01-31 18:37:08,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:08,602 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:08,602 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:08,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:08,604 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:08,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:09,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:09,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:37:09,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:10,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:37:10,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:10,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:37:10,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:12,111 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-31 18:37:12,111 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:12,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365358056] [2022-01-31 18:37:12,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1365358056] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:12,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:12,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67 [2022-01-31 18:37:12,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047969912] [2022-01-31 18:37:12,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:12,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-01-31 18:37:12,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:12,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-01-31 18:37:12,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=4261, Unknown=0, NotChecked=0, Total=4422 [2022-01-31 18:37:12,114 INFO L87 Difference]: Start difference. First operand 1940 states and 3243 transitions. Second operand has 67 states, 65 states have (on average 1.4307692307692308) internal successors, (93), 63 states have internal predecessors, (93), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:19,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:19,318 INFO L93 Difference]: Finished difference Result 2094 states and 3561 transitions. [2022-01-31 18:37:19,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-31 18:37:19,319 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 65 states have (on average 1.4307692307692308) internal successors, (93), 63 states have internal predecessors, (93), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:37:19,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:19,332 INFO L225 Difference]: With dead ends: 2094 [2022-01-31 18:37:19,332 INFO L226 Difference]: Without dead ends: 2090 [2022-01-31 18:37:19,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3382 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=598, Invalid=16432, Unknown=0, NotChecked=0, Total=17030 [2022-01-31 18:37:19,343 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 118 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 7672 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 7739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 7672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:19,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 274 Invalid, 7739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 7672 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-01-31 18:37:19,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2022-01-31 18:37:20,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 1972. [2022-01-31 18:37:20,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1972 states, 1788 states have (on average 1.1359060402684564) internal successors, (2031), 1854 states have internal predecessors, (2031), 106 states have call successors, (106), 12 states have call predecessors, (106), 77 states have return successors, (1261), 105 states have call predecessors, (1261), 105 states have call successors, (1261) [2022-01-31 18:37:20,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1972 states to 1972 states and 3398 transitions. [2022-01-31 18:37:20,073 INFO L78 Accepts]: Start accepts. Automaton has 1972 states and 3398 transitions. Word has length 110 [2022-01-31 18:37:20,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:20,073 INFO L470 AbstractCegarLoop]: Abstraction has 1972 states and 3398 transitions. [2022-01-31 18:37:20,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 65 states have (on average 1.4307692307692308) internal successors, (93), 63 states have internal predecessors, (93), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:20,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1972 states and 3398 transitions. [2022-01-31 18:37:20,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:37:20,088 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:20,088 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 8, 7, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:20,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-01-31 18:37:20,088 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:20,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:20,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1598208105, now seen corresponding path program 50 times [2022-01-31 18:37:20,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:20,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555825258] [2022-01-31 18:37:20,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:20,090 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:20,090 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:20,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:20,091 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:20,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:20,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:37:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:20,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:37:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:21,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:37:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:21,825 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-31 18:37:21,825 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:21,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555825258] [2022-01-31 18:37:21,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1555825258] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:21,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:21,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 18:37:21,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343094000] [2022-01-31 18:37:21,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:21,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 18:37:21,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:21,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 18:37:21,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=2514, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 18:37:21,828 INFO L87 Difference]: Start difference. First operand 1972 states and 3398 transitions. Second operand has 52 states, 50 states have (on average 1.5) internal successors, (75), 48 states have internal predecessors, (75), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:25,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:25,278 INFO L93 Difference]: Finished difference Result 2055 states and 3503 transitions. [2022-01-31 18:37:25,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-31 18:37:25,278 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 50 states have (on average 1.5) internal successors, (75), 48 states have internal predecessors, (75), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:37:25,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:25,288 INFO L225 Difference]: With dead ends: 2055 [2022-01-31 18:37:25,288 INFO L226 Difference]: Without dead ends: 2051 [2022-01-31 18:37:25,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1880 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=454, Invalid=8476, Unknown=0, NotChecked=0, Total=8930 [2022-01-31 18:37:25,300 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 106 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 3206 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 3262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 3206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:25,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 181 Invalid, 3262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 3206 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-31 18:37:25,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2051 states. [2022-01-31 18:37:26,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2051 to 1972. [2022-01-31 18:37:26,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1972 states, 1788 states have (on average 1.1359060402684564) internal successors, (2031), 1854 states have internal predecessors, (2031), 106 states have call successors, (106), 12 states have call predecessors, (106), 77 states have return successors, (1259), 105 states have call predecessors, (1259), 105 states have call successors, (1259) [2022-01-31 18:37:26,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1972 states to 1972 states and 3396 transitions. [2022-01-31 18:37:26,027 INFO L78 Accepts]: Start accepts. Automaton has 1972 states and 3396 transitions. Word has length 110 [2022-01-31 18:37:26,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:26,028 INFO L470 AbstractCegarLoop]: Abstraction has 1972 states and 3396 transitions. [2022-01-31 18:37:26,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 50 states have (on average 1.5) internal successors, (75), 48 states have internal predecessors, (75), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:26,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1972 states and 3396 transitions. [2022-01-31 18:37:26,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:37:26,044 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:26,044 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:26,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-01-31 18:37:26,044 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:26,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:26,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1205181095, now seen corresponding path program 51 times [2022-01-31 18:37:26,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:26,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340064526] [2022-01-31 18:37:26,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:26,045 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:26,045 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:26,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:26,047 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:26,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:26,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:37:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:27,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:37:27,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:28,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:37:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:29,125 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-31 18:37:29,125 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:29,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340064526] [2022-01-31 18:37:29,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [340064526] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:29,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:29,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2022-01-31 18:37:29,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862023244] [2022-01-31 18:37:29,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:29,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-01-31 18:37:29,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:29,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-01-31 18:37:29,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=4122, Unknown=0, NotChecked=0, Total=4290 [2022-01-31 18:37:29,127 INFO L87 Difference]: Start difference. First operand 1972 states and 3396 transitions. Second operand has 66 states, 64 states have (on average 1.390625) internal successors, (89), 62 states have internal predecessors, (89), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:34,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:34,883 INFO L93 Difference]: Finished difference Result 2064 states and 3567 transitions. [2022-01-31 18:37:34,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-31 18:37:34,883 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 64 states have (on average 1.390625) internal successors, (89), 62 states have internal predecessors, (89), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:37:34,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:34,896 INFO L225 Difference]: With dead ends: 2064 [2022-01-31 18:37:34,896 INFO L226 Difference]: Without dead ends: 2060 [2022-01-31 18:37:34,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3124 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=542, Invalid=13978, Unknown=0, NotChecked=0, Total=14520 [2022-01-31 18:37:34,908 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 89 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 6135 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 6197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 6135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:34,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 252 Invalid, 6197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 6135 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-01-31 18:37:34,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2060 states. [2022-01-31 18:37:35,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2060 to 1982. [2022-01-31 18:37:35,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1982 states, 1796 states have (on average 1.1364142538975501) internal successors, (2041), 1864 states have internal predecessors, (2041), 107 states have call successors, (107), 12 states have call predecessors, (107), 78 states have return successors, (1313), 105 states have call predecessors, (1313), 106 states have call successors, (1313) [2022-01-31 18:37:35,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1982 states to 1982 states and 3461 transitions. [2022-01-31 18:37:35,637 INFO L78 Accepts]: Start accepts. Automaton has 1982 states and 3461 transitions. Word has length 110 [2022-01-31 18:37:35,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:35,637 INFO L470 AbstractCegarLoop]: Abstraction has 1982 states and 3461 transitions. [2022-01-31 18:37:35,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 64 states have (on average 1.390625) internal successors, (89), 62 states have internal predecessors, (89), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:35,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1982 states and 3461 transitions. [2022-01-31 18:37:35,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:37:35,652 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:35,652 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 8, 7, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:35,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-01-31 18:37:35,653 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:35,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:35,653 INFO L85 PathProgramCache]: Analyzing trace with hash 615180649, now seen corresponding path program 52 times [2022-01-31 18:37:35,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:35,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881818428] [2022-01-31 18:37:35,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:35,654 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:35,654 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:35,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:35,656 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:35,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:36,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:36,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:36,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:37:36,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:36,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:37:36,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:37,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:37:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:37,762 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-31 18:37:37,763 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:37,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881818428] [2022-01-31 18:37:37,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [881818428] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:37,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:37,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-01-31 18:37:37,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845384194] [2022-01-31 18:37:37,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:37,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-01-31 18:37:37,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:37,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-01-31 18:37:37,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=2722, Unknown=0, NotChecked=0, Total=2862 [2022-01-31 18:37:37,764 INFO L87 Difference]: Start difference. First operand 1982 states and 3461 transitions. Second operand has 54 states, 52 states have (on average 1.4807692307692308) internal successors, (77), 50 states have internal predecessors, (77), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:42,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:42,013 INFO L93 Difference]: Finished difference Result 2075 states and 3579 transitions. [2022-01-31 18:37:42,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-31 18:37:42,014 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 52 states have (on average 1.4807692307692308) internal successors, (77), 50 states have internal predecessors, (77), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:37:42,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:42,024 INFO L225 Difference]: With dead ends: 2075 [2022-01-31 18:37:42,024 INFO L226 Difference]: Without dead ends: 2071 [2022-01-31 18:37:42,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1834 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=471, Invalid=8841, Unknown=0, NotChecked=0, Total=9312 [2022-01-31 18:37:42,036 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 97 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 4079 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 4134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 4079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:42,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 223 Invalid, 4134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 4079 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-31 18:37:42,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2022-01-31 18:37:42,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 1982. [2022-01-31 18:37:42,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1982 states, 1796 states have (on average 1.1364142538975501) internal successors, (2041), 1864 states have internal predecessors, (2041), 107 states have call successors, (107), 12 states have call predecessors, (107), 78 states have return successors, (1310), 105 states have call predecessors, (1310), 106 states have call successors, (1310) [2022-01-31 18:37:42,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1982 states to 1982 states and 3458 transitions. [2022-01-31 18:37:42,776 INFO L78 Accepts]: Start accepts. Automaton has 1982 states and 3458 transitions. Word has length 110 [2022-01-31 18:37:42,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:42,776 INFO L470 AbstractCegarLoop]: Abstraction has 1982 states and 3458 transitions. [2022-01-31 18:37:42,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 52 states have (on average 1.4807692307692308) internal successors, (77), 50 states have internal predecessors, (77), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:42,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1982 states and 3458 transitions. [2022-01-31 18:37:42,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:37:42,792 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:42,792 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:42,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-01-31 18:37:42,792 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:42,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:42,792 INFO L85 PathProgramCache]: Analyzing trace with hash 222153639, now seen corresponding path program 53 times [2022-01-31 18:37:42,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:42,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077375236] [2022-01-31 18:37:42,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:42,794 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:42,794 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:42,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:42,795 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:42,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:43,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:43,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:43,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:37:43,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:44,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:37:44,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:44,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:37:44,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:45,846 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-31 18:37:45,846 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:45,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077375236] [2022-01-31 18:37:45,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2077375236] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:45,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:45,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2022-01-31 18:37:45,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015561902] [2022-01-31 18:37:45,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:45,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-01-31 18:37:45,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:45,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-01-31 18:37:45,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=4002, Unknown=0, NotChecked=0, Total=4160 [2022-01-31 18:37:45,847 INFO L87 Difference]: Start difference. First operand 1982 states and 3458 transitions. Second operand has 65 states, 63 states have (on average 1.4444444444444444) internal successors, (91), 61 states have internal predecessors, (91), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:52,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:52,366 INFO L93 Difference]: Finished difference Result 2088 states and 3649 transitions. [2022-01-31 18:37:52,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-31 18:37:52,367 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 63 states have (on average 1.4444444444444444) internal successors, (91), 61 states have internal predecessors, (91), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:37:52,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:52,378 INFO L225 Difference]: With dead ends: 2088 [2022-01-31 18:37:52,379 INFO L226 Difference]: Without dead ends: 2084 [2022-01-31 18:37:52,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2985 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=541, Invalid=14221, Unknown=0, NotChecked=0, Total=14762 [2022-01-31 18:37:52,393 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 109 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 6908 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 6964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 6908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:52,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 269 Invalid, 6964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 6908 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-01-31 18:37:52,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2022-01-31 18:37:53,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 2000. [2022-01-31 18:37:53,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2000 states, 1812 states have (on average 1.1363134657836644) internal successors, (2059), 1881 states have internal predecessors, (2059), 108 states have call successors, (108), 12 states have call predecessors, (108), 79 states have return successors, (1369), 106 states have call predecessors, (1369), 107 states have call successors, (1369) [2022-01-31 18:37:53,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2000 states to 2000 states and 3536 transitions. [2022-01-31 18:37:53,189 INFO L78 Accepts]: Start accepts. Automaton has 2000 states and 3536 transitions. Word has length 110 [2022-01-31 18:37:53,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:53,189 INFO L470 AbstractCegarLoop]: Abstraction has 2000 states and 3536 transitions. [2022-01-31 18:37:53,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 63 states have (on average 1.4444444444444444) internal successors, (91), 61 states have internal predecessors, (91), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:53,189 INFO L276 IsEmpty]: Start isEmpty. Operand 2000 states and 3536 transitions. [2022-01-31 18:37:53,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:37:53,205 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:53,205 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:53,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-01-31 18:37:53,205 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:53,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:53,205 INFO L85 PathProgramCache]: Analyzing trace with hash -395936601, now seen corresponding path program 54 times [2022-01-31 18:37:53,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:53,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332417428] [2022-01-31 18:37:53,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:53,206 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:53,206 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:53,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:53,208 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:53,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:53,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:53,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:37:53,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:53,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:37:53,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:54,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:37:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:54,874 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-31 18:37:54,874 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:54,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332417428] [2022-01-31 18:37:54,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [332417428] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:54,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:54,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2022-01-31 18:37:54,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167840793] [2022-01-31 18:37:54,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:54,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-31 18:37:54,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:54,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-31 18:37:54,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=2415, Unknown=0, NotChecked=0, Total=2550 [2022-01-31 18:37:54,875 INFO L87 Difference]: Start difference. First operand 2000 states and 3536 transitions. Second operand has 51 states, 49 states have (on average 1.530612244897959) internal successors, (75), 47 states have internal predecessors, (75), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:58,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:58,465 INFO L93 Difference]: Finished difference Result 2106 states and 3674 transitions. [2022-01-31 18:37:58,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-31 18:37:58,466 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 49 states have (on average 1.530612244897959) internal successors, (75), 47 states have internal predecessors, (75), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:37:58,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:58,480 INFO L225 Difference]: With dead ends: 2106 [2022-01-31 18:37:58,480 INFO L226 Difference]: Without dead ends: 2102 [2022-01-31 18:37:58,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1729 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=459, Invalid=7913, Unknown=0, NotChecked=0, Total=8372 [2022-01-31 18:37:58,494 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 114 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 3482 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 3545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:58,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 193 Invalid, 3545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3482 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-31 18:37:58,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2102 states. [2022-01-31 18:37:59,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2102 to 2000. [2022-01-31 18:37:59,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2000 states, 1812 states have (on average 1.1363134657836644) internal successors, (2059), 1881 states have internal predecessors, (2059), 108 states have call successors, (108), 12 states have call predecessors, (108), 79 states have return successors, (1365), 106 states have call predecessors, (1365), 107 states have call successors, (1365) [2022-01-31 18:37:59,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2000 states to 2000 states and 3532 transitions. [2022-01-31 18:37:59,270 INFO L78 Accepts]: Start accepts. Automaton has 2000 states and 3532 transitions. Word has length 110 [2022-01-31 18:37:59,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:59,270 INFO L470 AbstractCegarLoop]: Abstraction has 2000 states and 3532 transitions. [2022-01-31 18:37:59,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 49 states have (on average 1.530612244897959) internal successors, (75), 47 states have internal predecessors, (75), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:59,271 INFO L276 IsEmpty]: Start isEmpty. Operand 2000 states and 3532 transitions. [2022-01-31 18:37:59,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:37:59,287 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:59,288 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 10, 5, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:59,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-01-31 18:37:59,288 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:59,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:59,288 INFO L85 PathProgramCache]: Analyzing trace with hash -788963611, now seen corresponding path program 55 times [2022-01-31 18:37:59,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:59,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997133151] [2022-01-31 18:37:59,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:59,289 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:59,289 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:59,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:59,291 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:00,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:00,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:38:00,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:01,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:38:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:01,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:38:01,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:02,605 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-31 18:38:02,605 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:02,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997133151] [2022-01-31 18:38:02,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1997133151] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:02,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:02,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2022-01-31 18:38:02,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734899295] [2022-01-31 18:38:02,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:02,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-01-31 18:38:02,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:02,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-01-31 18:38:02,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=3733, Unknown=0, NotChecked=0, Total=3906 [2022-01-31 18:38:02,607 INFO L87 Difference]: Start difference. First operand 2000 states and 3532 transitions. Second operand has 63 states, 61 states have (on average 1.4262295081967213) internal successors, (87), 59 states have internal predecessors, (87), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:07,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:07,801 INFO L93 Difference]: Finished difference Result 2090 states and 3644 transitions. [2022-01-31 18:38:07,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-31 18:38:07,801 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 61 states have (on average 1.4262295081967213) internal successors, (87), 59 states have internal predecessors, (87), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:38:07,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:07,810 INFO L225 Difference]: With dead ends: 2090 [2022-01-31 18:38:07,810 INFO L226 Difference]: Without dead ends: 2086 [2022-01-31 18:38:07,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2450 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=549, Invalid=11223, Unknown=0, NotChecked=0, Total=11772 [2022-01-31 18:38:07,822 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 109 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 4256 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 4333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 4256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:07,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 222 Invalid, 4333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 4256 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-31 18:38:07,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2086 states. [2022-01-31 18:38:08,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2086 to 2000. [2022-01-31 18:38:08,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2000 states, 1812 states have (on average 1.1363134657836644) internal successors, (2059), 1881 states have internal predecessors, (2059), 108 states have call successors, (108), 12 states have call predecessors, (108), 79 states have return successors, (1357), 106 states have call predecessors, (1357), 107 states have call successors, (1357) [2022-01-31 18:38:08,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2000 states to 2000 states and 3524 transitions. [2022-01-31 18:38:08,613 INFO L78 Accepts]: Start accepts. Automaton has 2000 states and 3524 transitions. Word has length 110 [2022-01-31 18:38:08,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:08,613 INFO L470 AbstractCegarLoop]: Abstraction has 2000 states and 3524 transitions. [2022-01-31 18:38:08,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 61 states have (on average 1.4262295081967213) internal successors, (87), 59 states have internal predecessors, (87), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:08,613 INFO L276 IsEmpty]: Start isEmpty. Operand 2000 states and 3524 transitions. [2022-01-31 18:38:08,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:38:08,628 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:08,628 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 8, 7, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:08,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-01-31 18:38:08,629 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:08,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:08,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1466787223, now seen corresponding path program 56 times [2022-01-31 18:38:08,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:08,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764598562] [2022-01-31 18:38:08,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:08,631 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:08,631 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:08,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:08,633 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:08,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:08,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:08,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:38:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:09,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:38:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:09,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:38:09,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:10,652 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 18:38:10,653 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:10,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764598562] [2022-01-31 18:38:10,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1764598562] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:10,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:10,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2022-01-31 18:38:10,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468580790] [2022-01-31 18:38:10,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:10,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-01-31 18:38:10,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:10,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-01-31 18:38:10,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=2934, Unknown=0, NotChecked=0, Total=3080 [2022-01-31 18:38:10,654 INFO L87 Difference]: Start difference. First operand 2000 states and 3524 transitions. Second operand has 56 states, 54 states have (on average 1.4444444444444444) internal successors, (78), 52 states have internal predecessors, (78), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:15,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:15,074 INFO L93 Difference]: Finished difference Result 2100 states and 3652 transitions. [2022-01-31 18:38:15,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-31 18:38:15,075 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 54 states have (on average 1.4444444444444444) internal successors, (78), 52 states have internal predecessors, (78), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:38:15,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:15,084 INFO L225 Difference]: With dead ends: 2100 [2022-01-31 18:38:15,084 INFO L226 Difference]: Without dead ends: 2096 [2022-01-31 18:38:15,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2649 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=586, Invalid=11186, Unknown=0, NotChecked=0, Total=11772 [2022-01-31 18:38:15,097 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 122 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 3984 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 4052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:15,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 206 Invalid, 4052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3984 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-31 18:38:15,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2096 states. [2022-01-31 18:38:15,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2096 to 2000. [2022-01-31 18:38:15,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2000 states, 1812 states have (on average 1.1363134657836644) internal successors, (2059), 1881 states have internal predecessors, (2059), 108 states have call successors, (108), 12 states have call predecessors, (108), 79 states have return successors, (1353), 106 states have call predecessors, (1353), 107 states have call successors, (1353) [2022-01-31 18:38:15,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2000 states to 2000 states and 3520 transitions. [2022-01-31 18:38:15,866 INFO L78 Accepts]: Start accepts. Automaton has 2000 states and 3520 transitions. Word has length 110 [2022-01-31 18:38:15,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:15,866 INFO L470 AbstractCegarLoop]: Abstraction has 2000 states and 3520 transitions. [2022-01-31 18:38:15,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 54 states have (on average 1.4444444444444444) internal successors, (78), 52 states have internal predecessors, (78), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:15,867 INFO L276 IsEmpty]: Start isEmpty. Operand 2000 states and 3520 transitions. [2022-01-31 18:38:15,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:38:15,883 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:15,883 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:15,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-01-31 18:38:15,883 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:15,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:15,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1859814233, now seen corresponding path program 57 times [2022-01-31 18:38:15,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:15,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894025392] [2022-01-31 18:38:15,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:15,884 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:15,884 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:15,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:15,886 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:15,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:16,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:16,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:16,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:38:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:17,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:38:17,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:17,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:38:17,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:18,851 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-31 18:38:18,851 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:18,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894025392] [2022-01-31 18:38:18,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1894025392] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:18,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:18,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2022-01-31 18:38:18,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966682916] [2022-01-31 18:38:18,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:18,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-01-31 18:38:18,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:18,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-01-31 18:38:18,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=3513, Unknown=0, NotChecked=0, Total=3660 [2022-01-31 18:38:18,853 INFO L87 Difference]: Start difference. First operand 2000 states and 3520 transitions. Second operand has 61 states, 59 states have (on average 1.4576271186440677) internal successors, (86), 57 states have internal predecessors, (86), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:24,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:24,882 INFO L93 Difference]: Finished difference Result 2124 states and 3734 transitions. [2022-01-31 18:38:24,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-31 18:38:24,882 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 59 states have (on average 1.4576271186440677) internal successors, (86), 57 states have internal predecessors, (86), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:38:24,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:24,894 INFO L225 Difference]: With dead ends: 2124 [2022-01-31 18:38:24,894 INFO L226 Difference]: Without dead ends: 2120 [2022-01-31 18:38:24,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2737 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=590, Invalid=13690, Unknown=0, NotChecked=0, Total=14280 [2022-01-31 18:38:24,910 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 101 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 5760 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 5824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 5760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:24,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 239 Invalid, 5824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 5760 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-31 18:38:24,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2120 states. [2022-01-31 18:38:25,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2120 to 2006. [2022-01-31 18:38:25,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2006 states, 1817 states have (on average 1.1364887176664833) internal successors, (2065), 1887 states have internal predecessors, (2065), 108 states have call successors, (108), 12 states have call predecessors, (108), 80 states have return successors, (1386), 106 states have call predecessors, (1386), 107 states have call successors, (1386) [2022-01-31 18:38:25,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2006 states to 2006 states and 3559 transitions. [2022-01-31 18:38:25,695 INFO L78 Accepts]: Start accepts. Automaton has 2006 states and 3559 transitions. Word has length 110 [2022-01-31 18:38:25,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:25,695 INFO L470 AbstractCegarLoop]: Abstraction has 2006 states and 3559 transitions. [2022-01-31 18:38:25,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 59 states have (on average 1.4576271186440677) internal successors, (86), 57 states have internal predecessors, (86), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:25,695 INFO L276 IsEmpty]: Start isEmpty. Operand 2006 states and 3559 transitions. [2022-01-31 18:38:25,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:38:25,712 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:25,712 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:25,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-01-31 18:38:25,712 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:25,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:25,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1817062823, now seen corresponding path program 58 times [2022-01-31 18:38:25,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:25,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142183184] [2022-01-31 18:38:25,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:25,713 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:25,714 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:25,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:25,715 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:26,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:26,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:26,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:38:26,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:26,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:38:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:27,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:38:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:27,840 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 18:38:27,840 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:27,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142183184] [2022-01-31 18:38:27,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1142183184] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:27,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:27,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-01-31 18:38:27,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835275179] [2022-01-31 18:38:27,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:27,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-01-31 18:38:27,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:27,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-01-31 18:38:27,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=2620, Unknown=0, NotChecked=0, Total=2756 [2022-01-31 18:38:27,841 INFO L87 Difference]: Start difference. First operand 2006 states and 3559 transitions. Second operand has 53 states, 51 states have (on average 1.5294117647058822) internal successors, (78), 49 states have internal predecessors, (78), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:32,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:32,812 INFO L93 Difference]: Finished difference Result 2119 states and 3706 transitions. [2022-01-31 18:38:32,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-31 18:38:32,812 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 51 states have (on average 1.5294117647058822) internal successors, (78), 49 states have internal predecessors, (78), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:38:32,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:32,823 INFO L225 Difference]: With dead ends: 2119 [2022-01-31 18:38:32,823 INFO L226 Difference]: Without dead ends: 2115 [2022-01-31 18:38:32,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2311 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=586, Invalid=10544, Unknown=0, NotChecked=0, Total=11130 [2022-01-31 18:38:32,837 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 133 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 4321 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 4382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 4321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:32,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 207 Invalid, 4382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 4321 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-31 18:38:32,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2115 states. [2022-01-31 18:38:33,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2115 to 2006. [2022-01-31 18:38:33,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2006 states, 1817 states have (on average 1.1364887176664833) internal successors, (2065), 1887 states have internal predecessors, (2065), 108 states have call successors, (108), 12 states have call predecessors, (108), 80 states have return successors, (1382), 106 states have call predecessors, (1382), 107 states have call successors, (1382) [2022-01-31 18:38:33,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2006 states to 2006 states and 3555 transitions. [2022-01-31 18:38:33,626 INFO L78 Accepts]: Start accepts. Automaton has 2006 states and 3555 transitions. Word has length 110 [2022-01-31 18:38:33,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:33,626 INFO L470 AbstractCegarLoop]: Abstraction has 2006 states and 3555 transitions. [2022-01-31 18:38:33,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 51 states have (on average 1.5294117647058822) internal successors, (78), 49 states have internal predecessors, (78), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:33,627 INFO L276 IsEmpty]: Start isEmpty. Operand 2006 states and 3555 transitions. [2022-01-31 18:38:33,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:38:33,643 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:33,643 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 10, 5, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:33,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-01-31 18:38:33,643 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:33,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:33,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1424035813, now seen corresponding path program 59 times [2022-01-31 18:38:33,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:33,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350593741] [2022-01-31 18:38:33,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:33,645 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:33,645 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:33,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:33,646 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:34,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:34,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:34,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:38:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:35,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:38:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:35,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:38:35,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:36,554 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 18:38:36,554 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:36,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350593741] [2022-01-31 18:38:36,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1350593741] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:36,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:36,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2022-01-31 18:38:36,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220739909] [2022-01-31 18:38:36,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:36,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-31 18:38:36,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:36,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-31 18:38:36,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=3867, Unknown=0, NotChecked=0, Total=4032 [2022-01-31 18:38:36,556 INFO L87 Difference]: Start difference. First operand 2006 states and 3555 transitions. Second operand has 64 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 60 states have internal predecessors, (88), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:42,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:42,691 INFO L93 Difference]: Finished difference Result 2098 states and 3696 transitions. [2022-01-31 18:38:42,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-31 18:38:42,692 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 60 states have internal predecessors, (88), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:38:42,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:42,701 INFO L225 Difference]: With dead ends: 2098 [2022-01-31 18:38:42,702 INFO L226 Difference]: Without dead ends: 2094 [2022-01-31 18:38:42,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3022 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=591, Invalid=14171, Unknown=0, NotChecked=0, Total=14762 [2022-01-31 18:38:42,716 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 98 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 6044 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 6108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 6044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:42,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 252 Invalid, 6108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 6044 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-01-31 18:38:42,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2094 states. [2022-01-31 18:38:43,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2094 to 2012. [2022-01-31 18:38:43,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2012 states, 1822 states have (on average 1.136663007683864) internal successors, (2071), 1893 states have internal predecessors, (2071), 108 states have call successors, (108), 12 states have call predecessors, (108), 81 states have return successors, (1405), 106 states have call predecessors, (1405), 107 states have call successors, (1405) [2022-01-31 18:38:43,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2012 states to 2012 states and 3584 transitions. [2022-01-31 18:38:43,505 INFO L78 Accepts]: Start accepts. Automaton has 2012 states and 3584 transitions. Word has length 110 [2022-01-31 18:38:43,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:43,505 INFO L470 AbstractCegarLoop]: Abstraction has 2012 states and 3584 transitions. [2022-01-31 18:38:43,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 60 states have internal predecessors, (88), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:43,506 INFO L276 IsEmpty]: Start isEmpty. Operand 2012 states and 3584 transitions. [2022-01-31 18:38:43,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:38:43,522 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:43,522 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:43,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-01-31 18:38:43,522 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:43,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:43,523 INFO L85 PathProgramCache]: Analyzing trace with hash 834035367, now seen corresponding path program 60 times [2022-01-31 18:38:43,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:43,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1420860] [2022-01-31 18:38:43,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:43,524 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:43,524 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:43,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:43,525 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:43,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:43,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:38:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:44,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:38:44,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:44,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:38:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:45,570 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 18:38:45,570 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:45,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1420860] [2022-01-31 18:38:45,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1420860] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:45,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:45,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-01-31 18:38:45,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423338465] [2022-01-31 18:38:45,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:45,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-01-31 18:38:45,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:45,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-01-31 18:38:45,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=3152, Unknown=0, NotChecked=0, Total=3306 [2022-01-31 18:38:45,572 INFO L87 Difference]: Start difference. First operand 2012 states and 3584 transitions. Second operand has 58 states, 56 states have (on average 1.5) internal successors, (84), 54 states have internal predecessors, (84), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:50,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:50,417 INFO L93 Difference]: Finished difference Result 2142 states and 3771 transitions. [2022-01-31 18:38:50,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-31 18:38:50,417 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 56 states have (on average 1.5) internal successors, (84), 54 states have internal predecessors, (84), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:38:50,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:50,430 INFO L225 Difference]: With dead ends: 2142 [2022-01-31 18:38:50,430 INFO L226 Difference]: Without dead ends: 2138 [2022-01-31 18:38:50,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2738 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=634, Invalid=12022, Unknown=0, NotChecked=0, Total=12656 [2022-01-31 18:38:50,443 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 140 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 4173 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 4238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 4173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:50,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 194 Invalid, 4238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 4173 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-31 18:38:50,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2138 states. [2022-01-31 18:38:51,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2138 to 2018. [2022-01-31 18:38:51,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2018 states, 1827 states have (on average 1.1368363437328954) internal successors, (2077), 1899 states have internal predecessors, (2077), 108 states have call successors, (108), 12 states have call predecessors, (108), 82 states have return successors, (1420), 106 states have call predecessors, (1420), 107 states have call successors, (1420) [2022-01-31 18:38:51,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2018 states to 2018 states and 3605 transitions. [2022-01-31 18:38:51,242 INFO L78 Accepts]: Start accepts. Automaton has 2018 states and 3605 transitions. Word has length 110 [2022-01-31 18:38:51,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:51,243 INFO L470 AbstractCegarLoop]: Abstraction has 2018 states and 3605 transitions. [2022-01-31 18:38:51,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 56 states have (on average 1.5) internal successors, (84), 54 states have internal predecessors, (84), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:51,243 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states and 3605 transitions. [2022-01-31 18:38:51,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:38:51,259 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:51,259 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 10, 5, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:51,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-01-31 18:38:51,259 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:51,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:51,260 INFO L85 PathProgramCache]: Analyzing trace with hash 441008357, now seen corresponding path program 61 times [2022-01-31 18:38:51,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:51,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294926332] [2022-01-31 18:38:51,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:51,261 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:51,261 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:51,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:51,262 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:51,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:51,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:51,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:51,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:38:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:52,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:38:52,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:53,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:38:53,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:54,026 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 18:38:54,027 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:54,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294926332] [2022-01-31 18:38:54,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1294926332] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:54,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:54,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-01-31 18:38:54,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246351347] [2022-01-31 18:38:54,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:54,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-01-31 18:38:54,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:54,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-01-31 18:38:54,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=3626, Unknown=0, NotChecked=0, Total=3782 [2022-01-31 18:38:54,028 INFO L87 Difference]: Start difference. First operand 2018 states and 3605 transitions. Second operand has 62 states, 60 states have (on average 1.4666666666666666) internal successors, (88), 58 states have internal predecessors, (88), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:59,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:59,831 INFO L93 Difference]: Finished difference Result 2116 states and 3765 transitions. [2022-01-31 18:38:59,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-31 18:38:59,831 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 60 states have (on average 1.4666666666666666) internal successors, (88), 58 states have internal predecessors, (88), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:38:59,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:59,844 INFO L225 Difference]: With dead ends: 2116 [2022-01-31 18:38:59,844 INFO L226 Difference]: Without dead ends: 2112 [2022-01-31 18:38:59,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2865 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=578, Invalid=13702, Unknown=0, NotChecked=0, Total=14280 [2022-01-31 18:38:59,859 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 105 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 5698 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 5772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 5698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:59,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 233 Invalid, 5772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 5698 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-31 18:38:59,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2022-01-31 18:39:00,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 2024. [2022-01-31 18:39:00,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2024 states, 1832 states have (on average 1.137008733624454) internal successors, (2083), 1905 states have internal predecessors, (2083), 108 states have call successors, (108), 12 states have call predecessors, (108), 83 states have return successors, (1456), 106 states have call predecessors, (1456), 107 states have call successors, (1456) [2022-01-31 18:39:00,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2024 states to 2024 states and 3647 transitions. [2022-01-31 18:39:00,737 INFO L78 Accepts]: Start accepts. Automaton has 2024 states and 3647 transitions. Word has length 110 [2022-01-31 18:39:00,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:39:00,737 INFO L470 AbstractCegarLoop]: Abstraction has 2024 states and 3647 transitions. [2022-01-31 18:39:00,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 60 states have (on average 1.4666666666666666) internal successors, (88), 58 states have internal predecessors, (88), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:39:00,737 INFO L276 IsEmpty]: Start isEmpty. Operand 2024 states and 3647 transitions. [2022-01-31 18:39:00,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:39:00,754 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:39:00,754 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 10, 5, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:39:00,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-01-31 18:39:00,754 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:39:00,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:39:00,754 INFO L85 PathProgramCache]: Analyzing trace with hash -177081883, now seen corresponding path program 62 times [2022-01-31 18:39:00,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:39:00,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631912613] [2022-01-31 18:39:00,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:39:00,756 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:39:00,756 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:39:00,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:39:00,758 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:39:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:01,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:39:01,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:01,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:39:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:01,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:39:01,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:02,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:39:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:02,642 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 18:39:02,642 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:39:02,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631912613] [2022-01-31 18:39:02,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1631912613] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:39:02,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:39:02,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 18:39:02,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990473657] [2022-01-31 18:39:02,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:39:02,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 18:39:02,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:39:02,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 18:39:02,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=2518, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 18:39:02,643 INFO L87 Difference]: Start difference. First operand 2024 states and 3647 transitions. Second operand has 52 states, 50 states have (on average 1.56) internal successors, (78), 48 states have internal predecessors, (78), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:39:07,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:39:07,224 INFO L93 Difference]: Finished difference Result 2132 states and 3788 transitions. [2022-01-31 18:39:07,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-31 18:39:07,224 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 50 states have (on average 1.56) internal successors, (78), 48 states have internal predecessors, (78), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:39:07,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:39:07,234 INFO L225 Difference]: With dead ends: 2132 [2022-01-31 18:39:07,234 INFO L226 Difference]: Without dead ends: 2128 [2022-01-31 18:39:07,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2126 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=548, Invalid=9552, Unknown=0, NotChecked=0, Total=10100 [2022-01-31 18:39:07,247 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 131 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 4034 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 4102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 4034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-31 18:39:07,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 195 Invalid, 4102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 4034 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-31 18:39:07,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2128 states. [2022-01-31 18:39:08,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2128 to 2024. [2022-01-31 18:39:08,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2024 states, 1832 states have (on average 1.137008733624454) internal successors, (2083), 1905 states have internal predecessors, (2083), 108 states have call successors, (108), 12 states have call predecessors, (108), 83 states have return successors, (1452), 106 states have call predecessors, (1452), 107 states have call successors, (1452) [2022-01-31 18:39:08,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2024 states to 2024 states and 3643 transitions. [2022-01-31 18:39:08,047 INFO L78 Accepts]: Start accepts. Automaton has 2024 states and 3643 transitions. Word has length 110 [2022-01-31 18:39:08,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:39:08,047 INFO L470 AbstractCegarLoop]: Abstraction has 2024 states and 3643 transitions. [2022-01-31 18:39:08,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 50 states have (on average 1.56) internal successors, (78), 48 states have internal predecessors, (78), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:39:08,047 INFO L276 IsEmpty]: Start isEmpty. Operand 2024 states and 3643 transitions. [2022-01-31 18:39:08,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:39:08,063 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:39:08,063 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 11, 5, 5, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:39:08,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-01-31 18:39:08,063 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:39:08,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:39:08,064 INFO L85 PathProgramCache]: Analyzing trace with hash -81424287, now seen corresponding path program 63 times [2022-01-31 18:39:08,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:39:08,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276398833] [2022-01-31 18:39:08,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:39:08,065 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:39:08,065 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:39:08,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:39:08,066 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:39:08,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:08,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:39:08,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:08,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:39:08,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:08,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:39:08,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:08,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:39:08,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:08,933 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:39:08,933 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:39:08,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276398833] [2022-01-31 18:39:08,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1276398833] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:39:08,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:39:08,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-31 18:39:08,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653630101] [2022-01-31 18:39:08,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:39:08,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-31 18:39:08,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:39:08,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-31 18:39:08,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1223, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 18:39:08,934 INFO L87 Difference]: Start difference. First operand 2024 states and 3643 transitions. Second operand has 37 states, 37 states have (on average 2.135135135135135) internal successors, (79), 35 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:39:12,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:39:12,362 INFO L93 Difference]: Finished difference Result 2855 states and 4917 transitions. [2022-01-31 18:39:12,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-31 18:39:12,362 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.135135135135135) internal successors, (79), 35 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:39:12,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:39:12,413 INFO L225 Difference]: With dead ends: 2855 [2022-01-31 18:39:12,414 INFO L226 Difference]: Without dead ends: 2802 [2022-01-31 18:39:12,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2631 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=708, Invalid=7848, Unknown=0, NotChecked=0, Total=8556 [2022-01-31 18:39:12,432 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 138 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 2319 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 2416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 2319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:39:12,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 125 Invalid, 2416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 2319 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 18:39:12,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2802 states. [2022-01-31 18:39:13,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2802 to 2276. [2022-01-31 18:39:13,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2276 states, 2076 states have (on average 1.1411368015414258) internal successors, (2369), 2149 states have internal predecessors, (2369), 112 states have call successors, (112), 16 states have call predecessors, (112), 87 states have return successors, (1439), 110 states have call predecessors, (1439), 111 states have call successors, (1439) [2022-01-31 18:39:13,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2276 states to 2276 states and 3920 transitions. [2022-01-31 18:39:13,400 INFO L78 Accepts]: Start accepts. Automaton has 2276 states and 3920 transitions. Word has length 110 [2022-01-31 18:39:13,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:39:13,400 INFO L470 AbstractCegarLoop]: Abstraction has 2276 states and 3920 transitions. [2022-01-31 18:39:13,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.135135135135135) internal successors, (79), 35 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:39:13,400 INFO L276 IsEmpty]: Start isEmpty. Operand 2276 states and 3920 transitions. [2022-01-31 18:39:13,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:39:13,417 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:39:13,417 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 10, 5, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:39:13,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-01-31 18:39:13,418 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:39:13,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:39:13,418 INFO L85 PathProgramCache]: Analyzing trace with hash 698976619, now seen corresponding path program 64 times [2022-01-31 18:39:13,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:39:13,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626772828] [2022-01-31 18:39:13,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:39:13,419 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:39:13,419 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:39:13,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:39:13,421 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:39:13,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:13,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:39:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:13,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:39:13,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:13,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:39:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:14,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:39:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:14,361 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:39:14,361 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:39:14,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626772828] [2022-01-31 18:39:14,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [626772828] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:39:14,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:39:14,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-01-31 18:39:14,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795495761] [2022-01-31 18:39:14,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:39:14,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-31 18:39:14,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:39:14,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-31 18:39:14,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1387, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 18:39:14,362 INFO L87 Difference]: Start difference. First operand 2276 states and 3920 transitions. Second operand has 39 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 37 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:39:17,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:39:17,333 INFO L93 Difference]: Finished difference Result 2982 states and 4765 transitions. [2022-01-31 18:39:17,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-31 18:39:17,333 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 37 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:39:17,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:39:17,353 INFO L225 Difference]: With dead ends: 2982 [2022-01-31 18:39:17,353 INFO L226 Difference]: Without dead ends: 2430 [2022-01-31 18:39:17,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1573 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=376, Invalid=6104, Unknown=0, NotChecked=0, Total=6480 [2022-01-31 18:39:17,368 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 112 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2602 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 2657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:39:17,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 158 Invalid, 2657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2602 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 18:39:17,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2430 states. [2022-01-31 18:39:18,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2430 to 2276. [2022-01-31 18:39:18,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2276 states, 2076 states have (on average 1.1411368015414258) internal successors, (2369), 2149 states have internal predecessors, (2369), 112 states have call successors, (112), 16 states have call predecessors, (112), 87 states have return successors, (1438), 110 states have call predecessors, (1438), 111 states have call successors, (1438) [2022-01-31 18:39:18,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2276 states to 2276 states and 3919 transitions. [2022-01-31 18:39:18,416 INFO L78 Accepts]: Start accepts. Automaton has 2276 states and 3919 transitions. Word has length 110 [2022-01-31 18:39:18,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:39:18,416 INFO L470 AbstractCegarLoop]: Abstraction has 2276 states and 3919 transitions. [2022-01-31 18:39:18,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 37 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:39:18,417 INFO L276 IsEmpty]: Start isEmpty. Operand 2276 states and 3919 transitions. [2022-01-31 18:39:18,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:39:18,434 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:39:18,434 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 8, 7, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:39:18,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-01-31 18:39:18,434 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:39:18,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:39:18,435 INFO L85 PathProgramCache]: Analyzing trace with hash 842279791, now seen corresponding path program 65 times [2022-01-31 18:39:18,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:39:18,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153854555] [2022-01-31 18:39:18,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:39:18,436 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:39:18,436 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:39:18,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:39:18,437 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:39:18,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:18,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:39:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:18,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:39:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:18,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:39:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:19,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:39:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:19,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:39:19,022 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:39:19,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153854555] [2022-01-31 18:39:19,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [153854555] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:39:19,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:39:19,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-01-31 18:39:19,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860478580] [2022-01-31 18:39:19,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:39:19,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-31 18:39:19,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:39:19,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-31 18:39:19,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=794, Unknown=0, NotChecked=0, Total=870 [2022-01-31 18:39:19,023 INFO L87 Difference]: Start difference. First operand 2276 states and 3919 transitions. Second operand has 30 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 29 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:39:21,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:39:21,607 INFO L93 Difference]: Finished difference Result 2966 states and 4714 transitions. [2022-01-31 18:39:21,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-31 18:39:21,608 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 29 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:39:21,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:39:21,633 INFO L225 Difference]: With dead ends: 2966 [2022-01-31 18:39:21,633 INFO L226 Difference]: Without dead ends: 2465 [2022-01-31 18:39:21,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=406, Invalid=4286, Unknown=0, NotChecked=0, Total=4692 [2022-01-31 18:39:21,650 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 88 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 1927 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 1967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 18:39:21,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 126 Invalid, 1967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1927 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 18:39:21,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2465 states. [2022-01-31 18:39:22,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2465 to 2254. [2022-01-31 18:39:22,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2254 states, 2055 states have (on average 1.137712895377129) internal successors, (2338), 2127 states have internal predecessors, (2338), 112 states have call successors, (112), 16 states have call predecessors, (112), 86 states have return successors, (1403), 110 states have call predecessors, (1403), 111 states have call successors, (1403) [2022-01-31 18:39:22,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2254 states to 2254 states and 3853 transitions. [2022-01-31 18:39:22,727 INFO L78 Accepts]: Start accepts. Automaton has 2254 states and 3853 transitions. Word has length 110 [2022-01-31 18:39:22,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:39:22,727 INFO L470 AbstractCegarLoop]: Abstraction has 2254 states and 3853 transitions. [2022-01-31 18:39:22,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 29 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:39:22,727 INFO L276 IsEmpty]: Start isEmpty. Operand 2254 states and 3853 transitions. [2022-01-31 18:39:22,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:39:22,745 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:39:22,745 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 8, 7, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:39:22,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-01-31 18:39:22,745 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:39:22,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:39:22,745 INFO L85 PathProgramCache]: Analyzing trace with hash 575082215, now seen corresponding path program 66 times [2022-01-31 18:39:22,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:39:22,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927291608] [2022-01-31 18:39:22,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:39:22,746 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:39:22,747 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:39:22,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:39:22,748 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:39:22,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:22,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:39:22,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:22,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:39:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:23,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:39:23,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:23,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:39:23,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:23,628 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:39:23,628 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:39:23,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927291608] [2022-01-31 18:39:23,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [927291608] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:39:23,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:39:23,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-31 18:39:23,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927762134] [2022-01-31 18:39:23,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:39:23,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-31 18:39:23,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:39:23,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-31 18:39:23,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1167, Unknown=0, NotChecked=0, Total=1260 [2022-01-31 18:39:23,629 INFO L87 Difference]: Start difference. First operand 2254 states and 3853 transitions. Second operand has 36 states, 35 states have (on average 2.257142857142857) internal successors, (79), 34 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:39:26,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:39:26,058 INFO L93 Difference]: Finished difference Result 2956 states and 4665 transitions. [2022-01-31 18:39:26,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-31 18:39:26,059 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.257142857142857) internal successors, (79), 34 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:39:26,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:39:26,087 INFO L225 Difference]: With dead ends: 2956 [2022-01-31 18:39:26,087 INFO L226 Difference]: Without dead ends: 2362 [2022-01-31 18:39:26,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1270 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=356, Invalid=4900, Unknown=0, NotChecked=0, Total=5256 [2022-01-31 18:39:26,104 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 123 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1362 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 1419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 18:39:26,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 100 Invalid, 1419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1362 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 18:39:26,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2362 states. [2022-01-31 18:39:27,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2362 to 2246. [2022-01-31 18:39:27,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2246 states, 2047 states have (on average 1.1367855398143625) internal successors, (2327), 2119 states have internal predecessors, (2327), 112 states have call successors, (112), 16 states have call predecessors, (112), 86 states have return successors, (1401), 110 states have call predecessors, (1401), 111 states have call successors, (1401) [2022-01-31 18:39:27,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2246 states to 2246 states and 3840 transitions. [2022-01-31 18:39:27,129 INFO L78 Accepts]: Start accepts. Automaton has 2246 states and 3840 transitions. Word has length 110 [2022-01-31 18:39:27,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:39:27,130 INFO L470 AbstractCegarLoop]: Abstraction has 2246 states and 3840 transitions. [2022-01-31 18:39:27,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.257142857142857) internal successors, (79), 34 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:39:27,130 INFO L276 IsEmpty]: Start isEmpty. Operand 2246 states and 3840 transitions. [2022-01-31 18:39:27,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:39:27,149 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:39:27,150 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:39:27,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-01-31 18:39:27,150 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:39:27,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:39:27,150 INFO L85 PathProgramCache]: Analyzing trace with hash 799486309, now seen corresponding path program 67 times [2022-01-31 18:39:27,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:39:27,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850818964] [2022-01-31 18:39:27,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:39:27,152 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:39:27,152 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:39:27,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:39:27,154 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:39:27,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:27,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:39:27,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:27,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:39:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:28,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:39:28,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:28,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:39:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:29,268 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-31 18:39:29,268 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:39:29,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850818964] [2022-01-31 18:39:29,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1850818964] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:39:29,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:39:29,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2022-01-31 18:39:29,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971867122] [2022-01-31 18:39:29,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:39:29,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-31 18:39:29,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:39:29,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-31 18:39:29,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=3821, Unknown=0, NotChecked=0, Total=4032 [2022-01-31 18:39:29,270 INFO L87 Difference]: Start difference. First operand 2246 states and 3840 transitions. Second operand has 64 states, 63 states have (on average 1.5238095238095237) internal successors, (96), 60 states have internal predecessors, (96), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:39:33,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:39:33,460 INFO L93 Difference]: Finished difference Result 2425 states and 4122 transitions. [2022-01-31 18:39:33,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-31 18:39:33,461 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 1.5238095238095237) internal successors, (96), 60 states have internal predecessors, (96), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:39:33,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:39:33,479 INFO L225 Difference]: With dead ends: 2425 [2022-01-31 18:39:33,479 INFO L226 Difference]: Without dead ends: 2421 [2022-01-31 18:39:33,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3850 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=766, Invalid=14486, Unknown=0, NotChecked=0, Total=15252 [2022-01-31 18:39:33,496 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 154 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 2972 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 3092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:39:33,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 173 Invalid, 3092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2972 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-31 18:39:33,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2022-01-31 18:39:34,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 2234. [2022-01-31 18:39:34,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2234 states, 2035 states have (on average 1.1371007371007371) internal successors, (2314), 2107 states have internal predecessors, (2314), 112 states have call successors, (112), 16 states have call predecessors, (112), 86 states have return successors, (1401), 110 states have call predecessors, (1401), 111 states have call successors, (1401) [2022-01-31 18:39:34,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2234 states to 2234 states and 3827 transitions. [2022-01-31 18:39:34,522 INFO L78 Accepts]: Start accepts. Automaton has 2234 states and 3827 transitions. Word has length 110 [2022-01-31 18:39:34,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:39:34,522 INFO L470 AbstractCegarLoop]: Abstraction has 2234 states and 3827 transitions. [2022-01-31 18:39:34,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 1.5238095238095237) internal successors, (96), 60 states have internal predecessors, (96), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:39:34,522 INFO L276 IsEmpty]: Start isEmpty. Operand 2234 states and 3827 transitions. [2022-01-31 18:39:34,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:39:34,540 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:39:34,540 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 10, 5, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:39:34,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-01-31 18:39:34,540 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:39:34,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:39:34,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1489831453, now seen corresponding path program 68 times [2022-01-31 18:39:34,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:39:34,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326635481] [2022-01-31 18:39:34,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:39:34,542 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:39:34,542 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:39:34,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:39:34,544 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:39:34,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:35,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:39:35,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:35,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:39:35,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:35,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:39:35,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:36,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:39:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:36,818 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-31 18:39:36,818 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:39:36,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326635481] [2022-01-31 18:39:36,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [326635481] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:39:36,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:39:36,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2022-01-31 18:39:36,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467236271] [2022-01-31 18:39:36,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:39:36,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-01-31 18:39:36,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:39:36,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-01-31 18:39:36,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=3261, Unknown=0, NotChecked=0, Total=3422 [2022-01-31 18:39:36,820 INFO L87 Difference]: Start difference. First operand 2234 states and 3827 transitions. Second operand has 59 states, 58 states have (on average 1.4655172413793103) internal successors, (85), 55 states have internal predecessors, (85), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:39:41,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:39:41,263 INFO L93 Difference]: Finished difference Result 2541 states and 4188 transitions. [2022-01-31 18:39:41,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-31 18:39:41,263 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 1.4655172413793103) internal successors, (85), 55 states have internal predecessors, (85), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:39:41,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:39:41,280 INFO L225 Difference]: With dead ends: 2541 [2022-01-31 18:39:41,280 INFO L226 Difference]: Without dead ends: 2537 [2022-01-31 18:39:41,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3927 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=658, Invalid=13622, Unknown=0, NotChecked=0, Total=14280 [2022-01-31 18:39:41,295 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 122 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 3503 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 3591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-31 18:39:41,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 215 Invalid, 3591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3503 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-31 18:39:41,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2537 states. [2022-01-31 18:39:42,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2537 to 2262. [2022-01-31 18:39:42,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2262 states, 2061 states have (on average 1.1368267831149927) internal successors, (2343), 2134 states have internal predecessors, (2343), 113 states have call successors, (113), 16 states have call predecessors, (113), 87 states have return successors, (1406), 111 states have call predecessors, (1406), 112 states have call successors, (1406) [2022-01-31 18:39:42,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2262 states to 2262 states and 3862 transitions. [2022-01-31 18:39:42,334 INFO L78 Accepts]: Start accepts. Automaton has 2262 states and 3862 transitions. Word has length 110 [2022-01-31 18:39:42,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:39:42,334 INFO L470 AbstractCegarLoop]: Abstraction has 2262 states and 3862 transitions. [2022-01-31 18:39:42,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 1.4655172413793103) internal successors, (85), 55 states have internal predecessors, (85), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:39:42,334 INFO L276 IsEmpty]: Start isEmpty. Operand 2262 states and 3862 transitions. [2022-01-31 18:39:42,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:39:42,351 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:39:42,351 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 8, 7, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:39:42,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-01-31 18:39:42,352 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:39:42,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:39:42,352 INFO L85 PathProgramCache]: Analyzing trace with hash -456134425, now seen corresponding path program 69 times [2022-01-31 18:39:42,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:39:42,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142659196] [2022-01-31 18:39:42,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:39:42,353 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:39:42,353 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:39:42,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:39:42,355 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:39:42,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:42,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:39:42,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:42,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:39:42,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:42,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:39:42,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:43,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:39:43,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:43,237 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:39:43,237 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:39:43,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142659196] [2022-01-31 18:39:43,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2142659196] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:39:43,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:39:43,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-31 18:39:43,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070937445] [2022-01-31 18:39:43,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:39:43,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-31 18:39:43,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:39:43,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-31 18:39:43,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1243, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 18:39:43,238 INFO L87 Difference]: Start difference. First operand 2262 states and 3862 transitions. Second operand has 37 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 35 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:39:46,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:39:46,308 INFO L93 Difference]: Finished difference Result 2886 states and 4578 transitions. [2022-01-31 18:39:46,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-31 18:39:46,309 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 35 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:39:46,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:39:46,330 INFO L225 Difference]: With dead ends: 2886 [2022-01-31 18:39:46,331 INFO L226 Difference]: Without dead ends: 2340 [2022-01-31 18:39:46,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1352 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=356, Invalid=5496, Unknown=0, NotChecked=0, Total=5852 [2022-01-31 18:39:46,347 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 104 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 2813 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:39:46,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 150 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 2813 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 18:39:46,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2340 states. [2022-01-31 18:39:47,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2340 to 2248. [2022-01-31 18:39:47,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2248 states, 2047 states have (on average 1.1372740595994137) internal successors, (2328), 2120 states have internal predecessors, (2328), 113 states have call successors, (113), 16 states have call predecessors, (113), 87 states have return successors, (1406), 111 states have call predecessors, (1406), 112 states have call successors, (1406) [2022-01-31 18:39:47,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2248 states to 2248 states and 3847 transitions. [2022-01-31 18:39:47,397 INFO L78 Accepts]: Start accepts. Automaton has 2248 states and 3847 transitions. Word has length 110 [2022-01-31 18:39:47,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:39:47,398 INFO L470 AbstractCegarLoop]: Abstraction has 2248 states and 3847 transitions. [2022-01-31 18:39:47,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 35 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:39:47,398 INFO L276 IsEmpty]: Start isEmpty. Operand 2248 states and 3847 transitions. [2022-01-31 18:39:47,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:39:47,415 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:39:47,415 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:39:47,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-01-31 18:39:47,415 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:39:47,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:39:47,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1907228059, now seen corresponding path program 70 times [2022-01-31 18:39:47,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:39:47,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259742055] [2022-01-31 18:39:47,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:39:47,417 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:39:47,417 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:39:47,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:39:47,419 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:39:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:47,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:39:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:47,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:39:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:48,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:39:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:49,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:39:49,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:49,739 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-31 18:39:49,739 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:39:49,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259742055] [2022-01-31 18:39:49,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1259742055] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:39:49,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:39:49,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2022-01-31 18:39:49,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433087003] [2022-01-31 18:39:49,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:39:49,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-01-31 18:39:49,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:39:49,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-01-31 18:39:49,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=3391, Unknown=0, NotChecked=0, Total=3540 [2022-01-31 18:39:49,741 INFO L87 Difference]: Start difference. First operand 2248 states and 3847 transitions. Second operand has 60 states, 59 states have (on average 1.576271186440678) internal successors, (93), 56 states have internal predecessors, (93), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:39:55,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:39:55,939 INFO L93 Difference]: Finished difference Result 2609 states and 4340 transitions. [2022-01-31 18:39:55,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-31 18:39:55,940 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 1.576271186440678) internal successors, (93), 56 states have internal predecessors, (93), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:39:55,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:39:55,971 INFO L225 Difference]: With dead ends: 2609 [2022-01-31 18:39:55,971 INFO L226 Difference]: Without dead ends: 2605 [2022-01-31 18:39:55,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5476 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=887, Invalid=19993, Unknown=0, NotChecked=0, Total=20880 [2022-01-31 18:39:55,988 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 154 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 4117 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 4210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 4117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-31 18:39:55,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 230 Invalid, 4210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 4117 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-31 18:39:55,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2605 states. [2022-01-31 18:39:57,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2605 to 2244. [2022-01-31 18:39:57,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2244 states, 2043 states have (on average 1.1370533529123839) internal successors, (2323), 2116 states have internal predecessors, (2323), 113 states have call successors, (113), 16 states have call predecessors, (113), 87 states have return successors, (1406), 111 states have call predecessors, (1406), 112 states have call successors, (1406) [2022-01-31 18:39:57,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2244 states to 2244 states and 3842 transitions. [2022-01-31 18:39:57,046 INFO L78 Accepts]: Start accepts. Automaton has 2244 states and 3842 transitions. Word has length 110 [2022-01-31 18:39:57,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:39:57,047 INFO L470 AbstractCegarLoop]: Abstraction has 2244 states and 3842 transitions. [2022-01-31 18:39:57,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 1.576271186440678) internal successors, (93), 56 states have internal predecessors, (93), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:39:57,047 INFO L276 IsEmpty]: Start isEmpty. Operand 2244 states and 3842 transitions. [2022-01-31 18:39:57,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:39:57,065 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:39:57,065 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 8, 7, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:39:57,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-01-31 18:39:57,066 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:39:57,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:39:57,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1346528281, now seen corresponding path program 71 times [2022-01-31 18:39:57,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:39:57,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165846602] [2022-01-31 18:39:57,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:39:57,067 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:39:57,067 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:39:57,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:39:57,069 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:39:57,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:57,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:39:57,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:57,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:39:57,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:57,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:39:57,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:57,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:39:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:57,368 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:39:57,368 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:39:57,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165846602] [2022-01-31 18:39:57,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1165846602] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:39:57,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:39:57,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-31 18:39:57,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212234343] [2022-01-31 18:39:57,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:39:57,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-31 18:39:57,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:39:57,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-31 18:39:57,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2022-01-31 18:39:57,370 INFO L87 Difference]: Start difference. First operand 2244 states and 3842 transitions. Second operand has 20 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 18 states have internal predecessors, (64), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:39:59,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:39:59,317 INFO L93 Difference]: Finished difference Result 3186 states and 5118 transitions. [2022-01-31 18:39:59,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-31 18:39:59,318 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 18 states have internal predecessors, (64), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:39:59,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:39:59,361 INFO L225 Difference]: With dead ends: 3186 [2022-01-31 18:39:59,361 INFO L226 Difference]: Without dead ends: 2552 [2022-01-31 18:39:59,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=174, Invalid=1232, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 18:39:59,379 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 90 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:39:59,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 74 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:39:59,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2552 states. [2022-01-31 18:40:00,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2552 to 2231. [2022-01-31 18:40:00,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2231 states, 2029 states have (on average 1.1370133070478068) internal successors, (2307), 2103 states have internal predecessors, (2307), 113 states have call successors, (113), 16 states have call predecessors, (113), 88 states have return successors, (1386), 111 states have call predecessors, (1386), 112 states have call successors, (1386) [2022-01-31 18:40:00,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2231 states to 2231 states and 3806 transitions. [2022-01-31 18:40:00,459 INFO L78 Accepts]: Start accepts. Automaton has 2231 states and 3806 transitions. Word has length 110 [2022-01-31 18:40:00,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:00,459 INFO L470 AbstractCegarLoop]: Abstraction has 2231 states and 3806 transitions. [2022-01-31 18:40:00,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 18 states have internal predecessors, (64), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:00,460 INFO L276 IsEmpty]: Start isEmpty. Operand 2231 states and 3806 transitions. [2022-01-31 18:40:00,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:40:00,478 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:00,478 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 8, 7, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:00,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-01-31 18:40:00,478 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:00,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:00,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1966814239, now seen corresponding path program 72 times [2022-01-31 18:40:00,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:00,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731665873] [2022-01-31 18:40:00,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:00,480 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:00,480 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:00,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:00,481 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:01,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:01,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:01,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:40:01,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:01,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:40:01,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:02,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:40:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:02,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-31 18:40:02,688 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:02,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731665873] [2022-01-31 18:40:02,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1731665873] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:02,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:02,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2022-01-31 18:40:02,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108172105] [2022-01-31 18:40:02,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:02,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-01-31 18:40:02,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:02,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-01-31 18:40:02,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=3015, Unknown=0, NotChecked=0, Total=3192 [2022-01-31 18:40:02,690 INFO L87 Difference]: Start difference. First operand 2231 states and 3806 transitions. Second operand has 57 states, 56 states have (on average 1.5357142857142858) internal successors, (86), 53 states have internal predecessors, (86), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:06,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:06,546 INFO L93 Difference]: Finished difference Result 2404 states and 4007 transitions. [2022-01-31 18:40:06,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-31 18:40:06,546 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 1.5357142857142858) internal successors, (86), 53 states have internal predecessors, (86), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:40:06,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:06,559 INFO L225 Difference]: With dead ends: 2404 [2022-01-31 18:40:06,560 INFO L226 Difference]: Without dead ends: 2400 [2022-01-31 18:40:06,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2339 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=551, Invalid=9151, Unknown=0, NotChecked=0, Total=9702 [2022-01-31 18:40:06,573 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 92 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 2667 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 2741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:06,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 171 Invalid, 2741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2667 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-31 18:40:06,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2400 states. [2022-01-31 18:40:07,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2400 to 2252. [2022-01-31 18:40:07,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2252 states, 2048 states have (on average 1.13720703125) internal successors, (2329), 2123 states have internal predecessors, (2329), 114 states have call successors, (114), 16 states have call predecessors, (114), 89 states have return successors, (1392), 112 states have call predecessors, (1392), 113 states have call successors, (1392) [2022-01-31 18:40:07,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2252 states to 2252 states and 3835 transitions. [2022-01-31 18:40:07,674 INFO L78 Accepts]: Start accepts. Automaton has 2252 states and 3835 transitions. Word has length 110 [2022-01-31 18:40:07,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:07,674 INFO L470 AbstractCegarLoop]: Abstraction has 2252 states and 3835 transitions. [2022-01-31 18:40:07,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 1.5357142857142858) internal successors, (86), 53 states have internal predecessors, (86), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:07,674 INFO L276 IsEmpty]: Start isEmpty. Operand 2252 states and 3835 transitions. [2022-01-31 18:40:07,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:40:07,692 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:07,692 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:07,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-01-31 18:40:07,692 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:07,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:07,693 INFO L85 PathProgramCache]: Analyzing trace with hash -580028829, now seen corresponding path program 73 times [2022-01-31 18:40:07,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:07,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804257127] [2022-01-31 18:40:07,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:07,694 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:07,694 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:07,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:07,696 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:07,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:07,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:40:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:08,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:40:08,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:08,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:40:08,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:08,286 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:40:08,286 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:08,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804257127] [2022-01-31 18:40:08,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1804257127] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:08,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:08,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-01-31 18:40:08,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947694385] [2022-01-31 18:40:08,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:08,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-31 18:40:08,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:08,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-31 18:40:08,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2022-01-31 18:40:08,287 INFO L87 Difference]: Start difference. First operand 2252 states and 3835 transitions. Second operand has 29 states, 28 states have (on average 2.75) internal successors, (77), 27 states have internal predecessors, (77), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:10,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:10,476 INFO L93 Difference]: Finished difference Result 3017 states and 4730 transitions. [2022-01-31 18:40:10,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-31 18:40:10,477 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.75) internal successors, (77), 27 states have internal predecessors, (77), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:40:10,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:10,514 INFO L225 Difference]: With dead ends: 3017 [2022-01-31 18:40:10,514 INFO L226 Difference]: Without dead ends: 2270 [2022-01-31 18:40:10,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=290, Invalid=2902, Unknown=0, NotChecked=0, Total=3192 [2022-01-31 18:40:10,530 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 100 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 1217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:10,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 114 Invalid, 1217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 18:40:10,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2270 states. [2022-01-31 18:40:11,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2270 to 2191. [2022-01-31 18:40:11,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2191 states, 1991 states have (on average 1.1330989452536413) internal successors, (2256), 2063 states have internal predecessors, (2256), 114 states have call successors, (114), 16 states have call predecessors, (114), 85 states have return successors, (1379), 111 states have call predecessors, (1379), 113 states have call successors, (1379) [2022-01-31 18:40:11,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2191 states to 2191 states and 3749 transitions. [2022-01-31 18:40:11,571 INFO L78 Accepts]: Start accepts. Automaton has 2191 states and 3749 transitions. Word has length 110 [2022-01-31 18:40:11,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:11,571 INFO L470 AbstractCegarLoop]: Abstraction has 2191 states and 3749 transitions. [2022-01-31 18:40:11,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.75) internal successors, (77), 27 states have internal predecessors, (77), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:11,571 INFO L276 IsEmpty]: Start isEmpty. Operand 2191 states and 3749 transitions. [2022-01-31 18:40:11,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:40:11,588 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:11,588 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:11,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-01-31 18:40:11,588 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:11,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:11,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1406114461, now seen corresponding path program 74 times [2022-01-31 18:40:11,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:11,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234174165] [2022-01-31 18:40:11,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:11,590 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:11,590 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:11,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:11,592 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:11,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:12,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:12,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:40:12,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:12,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:40:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:12,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:40:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:13,332 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 18:40:13,332 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:13,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234174165] [2022-01-31 18:40:13,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1234174165] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:13,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:13,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-01-31 18:40:13,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061523286] [2022-01-31 18:40:13,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:13,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-01-31 18:40:13,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:13,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-01-31 18:40:13,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=2118, Unknown=0, NotChecked=0, Total=2256 [2022-01-31 18:40:13,333 INFO L87 Difference]: Start difference. First operand 2191 states and 3749 transitions. Second operand has 48 states, 47 states have (on average 1.553191489361702) internal successors, (73), 44 states have internal predecessors, (73), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:16,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:16,661 INFO L93 Difference]: Finished difference Result 2283 states and 3853 transitions. [2022-01-31 18:40:16,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-31 18:40:16,661 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.553191489361702) internal successors, (73), 44 states have internal predecessors, (73), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:40:16,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:16,674 INFO L225 Difference]: With dead ends: 2283 [2022-01-31 18:40:16,674 INFO L226 Difference]: Without dead ends: 2279 [2022-01-31 18:40:16,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1620 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=456, Invalid=6854, Unknown=0, NotChecked=0, Total=7310 [2022-01-31 18:40:16,686 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 78 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2550 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 2626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:16,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 165 Invalid, 2626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2550 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 18:40:16,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2279 states. [2022-01-31 18:40:17,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2279 to 2191. [2022-01-31 18:40:17,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2191 states, 1991 states have (on average 1.1330989452536413) internal successors, (2256), 2063 states have internal predecessors, (2256), 114 states have call successors, (114), 16 states have call predecessors, (114), 85 states have return successors, (1379), 111 states have call predecessors, (1379), 113 states have call successors, (1379) [2022-01-31 18:40:17,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2191 states to 2191 states and 3749 transitions. [2022-01-31 18:40:17,724 INFO L78 Accepts]: Start accepts. Automaton has 2191 states and 3749 transitions. Word has length 110 [2022-01-31 18:40:17,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:17,724 INFO L470 AbstractCegarLoop]: Abstraction has 2191 states and 3749 transitions. [2022-01-31 18:40:17,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.553191489361702) internal successors, (73), 44 states have internal predecessors, (73), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:17,724 INFO L276 IsEmpty]: Start isEmpty. Operand 2191 states and 3749 transitions. [2022-01-31 18:40:17,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:40:17,741 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:17,741 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:17,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-01-31 18:40:17,741 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:17,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:17,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1910756451, now seen corresponding path program 75 times [2022-01-31 18:40:17,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:17,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388078234] [2022-01-31 18:40:17,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:17,743 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:17,743 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:17,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:17,745 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:18,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:18,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:40:18,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:18,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:40:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:19,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:40:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:19,671 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-31 18:40:19,671 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:19,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388078234] [2022-01-31 18:40:19,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1388078234] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:19,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:19,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-01-31 18:40:19,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120422965] [2022-01-31 18:40:19,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:19,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-01-31 18:40:19,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:19,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-01-31 18:40:19,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=3112, Unknown=0, NotChecked=0, Total=3306 [2022-01-31 18:40:19,672 INFO L87 Difference]: Start difference. First operand 2191 states and 3749 transitions. Second operand has 58 states, 57 states have (on average 1.6140350877192982) internal successors, (92), 54 states have internal predecessors, (92), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:23,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:23,325 INFO L93 Difference]: Finished difference Result 2311 states and 3914 transitions. [2022-01-31 18:40:23,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-31 18:40:23,325 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 1.6140350877192982) internal successors, (92), 54 states have internal predecessors, (92), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:40:23,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:23,341 INFO L225 Difference]: With dead ends: 2311 [2022-01-31 18:40:23,341 INFO L226 Difference]: Without dead ends: 2307 [2022-01-31 18:40:23,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2517 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=643, Invalid=10277, Unknown=0, NotChecked=0, Total=10920 [2022-01-31 18:40:23,357 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 120 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 2690 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 2779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 2690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:23,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 173 Invalid, 2779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 2690 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 18:40:23,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2307 states. [2022-01-31 18:40:24,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2307 to 2179. [2022-01-31 18:40:24,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2179 states, 1979 states have (on average 1.1339060131379484) internal successors, (2244), 2051 states have internal predecessors, (2244), 114 states have call successors, (114), 16 states have call predecessors, (114), 85 states have return successors, (1379), 111 states have call predecessors, (1379), 113 states have call successors, (1379) [2022-01-31 18:40:24,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2179 states to 2179 states and 3737 transitions. [2022-01-31 18:40:24,413 INFO L78 Accepts]: Start accepts. Automaton has 2179 states and 3737 transitions. Word has length 110 [2022-01-31 18:40:24,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:24,413 INFO L470 AbstractCegarLoop]: Abstraction has 2179 states and 3737 transitions. [2022-01-31 18:40:24,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 1.6140350877192982) internal successors, (92), 54 states have internal predecessors, (92), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:24,413 INFO L276 IsEmpty]: Start isEmpty. Operand 2179 states and 3737 transitions. [2022-01-31 18:40:24,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:40:24,433 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:24,433 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 12, 5, 5, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:24,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-01-31 18:40:24,433 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:24,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:24,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1034343645, now seen corresponding path program 76 times [2022-01-31 18:40:24,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:24,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339364165] [2022-01-31 18:40:24,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:24,435 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:24,435 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:24,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:24,437 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:24,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:24,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:24,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:40:24,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:24,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:40:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:25,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:40:25,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:25,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:40:25,021 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:25,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339364165] [2022-01-31 18:40:25,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1339364165] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:25,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:25,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-01-31 18:40:25,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112993573] [2022-01-31 18:40:25,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:25,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-31 18:40:25,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:25,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-31 18:40:25,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2022-01-31 18:40:25,022 INFO L87 Difference]: Start difference. First operand 2179 states and 3737 transitions. Second operand has 29 states, 28 states have (on average 2.6785714285714284) internal successors, (75), 27 states have internal predecessors, (75), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:27,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:27,143 INFO L93 Difference]: Finished difference Result 2691 states and 4443 transitions. [2022-01-31 18:40:27,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-31 18:40:27,144 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.6785714285714284) internal successors, (75), 27 states have internal predecessors, (75), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:40:27,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:27,171 INFO L225 Difference]: With dead ends: 2691 [2022-01-31 18:40:27,171 INFO L226 Difference]: Without dead ends: 2156 [2022-01-31 18:40:27,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 887 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=329, Invalid=3331, Unknown=0, NotChecked=0, Total=3660 [2022-01-31 18:40:27,189 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 92 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:27,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 106 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1292 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 18:40:27,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2156 states. [2022-01-31 18:40:28,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2156 to 2083. [2022-01-31 18:40:28,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2083 states, 1890 states have (on average 1.1386243386243386) internal successors, (2152), 1963 states have internal predecessors, (2152), 107 states have call successors, (107), 16 states have call predecessors, (107), 85 states have return successors, (1261), 103 states have call predecessors, (1261), 106 states have call successors, (1261) [2022-01-31 18:40:28,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 3520 transitions. [2022-01-31 18:40:28,186 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 3520 transitions. Word has length 110 [2022-01-31 18:40:28,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:28,187 INFO L470 AbstractCegarLoop]: Abstraction has 2083 states and 3520 transitions. [2022-01-31 18:40:28,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.6785714285714284) internal successors, (75), 27 states have internal predecessors, (75), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:28,187 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 3520 transitions. [2022-01-31 18:40:28,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:40:28,203 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:28,204 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 11, 5, 5, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:28,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-01-31 18:40:28,204 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:28,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:28,204 INFO L85 PathProgramCache]: Analyzing trace with hash 352441765, now seen corresponding path program 77 times [2022-01-31 18:40:28,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:28,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195285685] [2022-01-31 18:40:28,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:28,205 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:28,205 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:28,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:28,207 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:28,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:28,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:28,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:40:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:28,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:40:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:28,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:40:28,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:29,081 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:40:29,082 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:29,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195285685] [2022-01-31 18:40:29,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [195285685] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:29,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:29,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-31 18:40:29,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656492157] [2022-01-31 18:40:29,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:29,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-31 18:40:29,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:29,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-31 18:40:29,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1223, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 18:40:29,083 INFO L87 Difference]: Start difference. First operand 2083 states and 3520 transitions. Second operand has 37 states, 37 states have (on average 2.135135135135135) internal successors, (79), 35 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:31,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:31,888 INFO L93 Difference]: Finished difference Result 2179 states and 3617 transitions. [2022-01-31 18:40:31,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-31 18:40:31,888 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.135135135135135) internal successors, (79), 35 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:40:31,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:31,899 INFO L225 Difference]: With dead ends: 2179 [2022-01-31 18:40:31,899 INFO L226 Difference]: Without dead ends: 2175 [2022-01-31 18:40:31,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1588 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=468, Invalid=5232, Unknown=0, NotChecked=0, Total=5700 [2022-01-31 18:40:31,912 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 113 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 2058 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 2128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:31,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 118 Invalid, 2128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 2058 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 18:40:31,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2175 states. [2022-01-31 18:40:32,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2175 to 2057. [2022-01-31 18:40:32,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2057 states, 1867 states have (on average 1.1403320835565078) internal successors, (2129), 1939 states have internal predecessors, (2129), 104 states have call successors, (104), 16 states have call predecessors, (104), 85 states have return successors, (1155), 101 states have call predecessors, (1155), 103 states have call successors, (1155) [2022-01-31 18:40:32,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 3388 transitions. [2022-01-31 18:40:32,925 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 3388 transitions. Word has length 110 [2022-01-31 18:40:32,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:32,925 INFO L470 AbstractCegarLoop]: Abstraction has 2057 states and 3388 transitions. [2022-01-31 18:40:32,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.135135135135135) internal successors, (79), 35 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:32,925 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 3388 transitions. [2022-01-31 18:40:32,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:40:32,942 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:32,942 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 10, 5, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:32,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-01-31 18:40:32,942 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:32,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:32,943 INFO L85 PathProgramCache]: Analyzing trace with hash 571296483, now seen corresponding path program 78 times [2022-01-31 18:40:32,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:32,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496317278] [2022-01-31 18:40:32,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:32,944 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:32,944 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:32,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:32,946 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:33,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:33,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:33,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:40:33,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:34,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:40:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:34,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:40:34,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:35,556 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-31 18:40:35,557 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:35,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496317278] [2022-01-31 18:40:35,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [496317278] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:35,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:35,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2022-01-31 18:40:35,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911439576] [2022-01-31 18:40:35,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:35,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-01-31 18:40:35,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:35,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-01-31 18:40:35,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=3728, Unknown=0, NotChecked=0, Total=3906 [2022-01-31 18:40:35,558 INFO L87 Difference]: Start difference. First operand 2057 states and 3388 transitions. Second operand has 63 states, 62 states have (on average 1.403225806451613) internal successors, (87), 59 states have internal predecessors, (87), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:40,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:40,813 INFO L93 Difference]: Finished difference Result 2270 states and 3659 transitions. [2022-01-31 18:40:40,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-31 18:40:40,813 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 1.403225806451613) internal successors, (87), 59 states have internal predecessors, (87), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:40:40,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:40,829 INFO L225 Difference]: With dead ends: 2270 [2022-01-31 18:40:40,829 INFO L226 Difference]: Without dead ends: 2266 [2022-01-31 18:40:40,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4805 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=787, Invalid=16505, Unknown=0, NotChecked=0, Total=17292 [2022-01-31 18:40:40,842 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 135 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 4036 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 4132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 4036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:40,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 218 Invalid, 4132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 4036 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-31 18:40:40,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2266 states. [2022-01-31 18:40:41,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2266 to 2071. [2022-01-31 18:40:41,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2071 states, 1879 states have (on average 1.1394358701436935) internal successors, (2141), 1951 states have internal predecessors, (2141), 106 states have call successors, (106), 16 states have call predecessors, (106), 85 states have return successors, (1169), 103 states have call predecessors, (1169), 105 states have call successors, (1169) [2022-01-31 18:40:41,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2071 states to 2071 states and 3416 transitions. [2022-01-31 18:40:41,855 INFO L78 Accepts]: Start accepts. Automaton has 2071 states and 3416 transitions. Word has length 110 [2022-01-31 18:40:41,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:41,855 INFO L470 AbstractCegarLoop]: Abstraction has 2071 states and 3416 transitions. [2022-01-31 18:40:41,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 1.403225806451613) internal successors, (87), 59 states have internal predecessors, (87), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:41,856 INFO L276 IsEmpty]: Start isEmpty. Operand 2071 states and 3416 transitions. [2022-01-31 18:40:41,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:40:41,871 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:41,871 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:41,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-01-31 18:40:41,872 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:41,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:41,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1422848223, now seen corresponding path program 79 times [2022-01-31 18:40:41,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:41,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41172784] [2022-01-31 18:40:41,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:41,873 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:41,873 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:41,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:41,875 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:42,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:42,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:40:42,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:42,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:40:42,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:42,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:40:42,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:42,942 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:40:42,943 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:42,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41172784] [2022-01-31 18:40:42,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [41172784] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:42,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:42,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2022-01-31 18:40:42,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268828866] [2022-01-31 18:40:42,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:42,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-31 18:40:42,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:42,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-31 18:40:42,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1526, Unknown=0, NotChecked=0, Total=1640 [2022-01-31 18:40:42,944 INFO L87 Difference]: Start difference. First operand 2071 states and 3416 transitions. Second operand has 41 states, 41 states have (on average 2.048780487804878) internal successors, (84), 39 states have internal predecessors, (84), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:46,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:46,184 INFO L93 Difference]: Finished difference Result 2294 states and 3740 transitions. [2022-01-31 18:40:46,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-31 18:40:46,184 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.048780487804878) internal successors, (84), 39 states have internal predecessors, (84), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:40:46,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:46,229 INFO L225 Difference]: With dead ends: 2294 [2022-01-31 18:40:46,229 INFO L226 Difference]: Without dead ends: 2290 [2022-01-31 18:40:46,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2077 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=505, Invalid=7151, Unknown=0, NotChecked=0, Total=7656 [2022-01-31 18:40:46,250 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 134 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 2489 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 2560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 2489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:46,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 142 Invalid, 2560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 2489 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 18:40:46,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2290 states. [2022-01-31 18:40:47,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2290 to 2107. [2022-01-31 18:40:47,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2107 states, 1912 states have (on average 1.137029288702929) internal successors, (2174), 1984 states have internal predecessors, (2174), 109 states have call successors, (109), 16 states have call predecessors, (109), 85 states have return successors, (1166), 106 states have call predecessors, (1166), 108 states have call successors, (1166) [2022-01-31 18:40:47,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2107 states to 2107 states and 3449 transitions. [2022-01-31 18:40:47,297 INFO L78 Accepts]: Start accepts. Automaton has 2107 states and 3449 transitions. Word has length 110 [2022-01-31 18:40:47,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:47,297 INFO L470 AbstractCegarLoop]: Abstraction has 2107 states and 3449 transitions. [2022-01-31 18:40:47,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.048780487804878) internal successors, (84), 39 states have internal predecessors, (84), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:47,298 INFO L276 IsEmpty]: Start isEmpty. Operand 2107 states and 3449 transitions. [2022-01-31 18:40:47,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:40:47,314 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:47,314 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:47,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-01-31 18:40:47,314 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:47,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:47,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1457289627, now seen corresponding path program 80 times [2022-01-31 18:40:47,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:47,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591096379] [2022-01-31 18:40:47,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:47,316 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:47,316 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:47,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:47,317 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:47,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:47,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:47,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:47,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:40:47,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:47,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:40:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:48,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:40:48,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:48,116 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:40:48,116 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:48,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591096379] [2022-01-31 18:40:48,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1591096379] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:48,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:48,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-01-31 18:40:48,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83305553] [2022-01-31 18:40:48,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:48,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-31 18:40:48,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:48,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-31 18:40:48,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1035, Unknown=0, NotChecked=0, Total=1122 [2022-01-31 18:40:48,117 INFO L87 Difference]: Start difference. First operand 2107 states and 3449 transitions. Second operand has 34 states, 33 states have (on average 2.393939393939394) internal successors, (79), 32 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:50,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:50,593 INFO L93 Difference]: Finished difference Result 2740 states and 4237 transitions. [2022-01-31 18:40:50,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-31 18:40:50,593 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.393939393939394) internal successors, (79), 32 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:40:50,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:50,619 INFO L225 Difference]: With dead ends: 2740 [2022-01-31 18:40:50,619 INFO L226 Difference]: Without dead ends: 2129 [2022-01-31 18:40:50,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 986 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=333, Invalid=4089, Unknown=0, NotChecked=0, Total=4422 [2022-01-31 18:40:50,635 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 101 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 1923 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 1962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:50,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 133 Invalid, 1962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1923 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 18:40:50,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2129 states. [2022-01-31 18:40:51,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2129 to 2078. [2022-01-31 18:40:51,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2078 states, 1886 states have (on average 1.1330858960763521) internal successors, (2137), 1955 states have internal predecessors, (2137), 109 states have call successors, (109), 16 states have call predecessors, (109), 82 states have return successors, (1157), 106 states have call predecessors, (1157), 108 states have call successors, (1157) [2022-01-31 18:40:51,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2078 states to 2078 states and 3403 transitions. [2022-01-31 18:40:51,632 INFO L78 Accepts]: Start accepts. Automaton has 2078 states and 3403 transitions. Word has length 110 [2022-01-31 18:40:51,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:51,632 INFO L470 AbstractCegarLoop]: Abstraction has 2078 states and 3403 transitions. [2022-01-31 18:40:51,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.393939393939394) internal successors, (79), 32 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:51,632 INFO L276 IsEmpty]: Start isEmpty. Operand 2078 states and 3403 transitions. [2022-01-31 18:40:51,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:40:51,649 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:51,649 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:51,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-01-31 18:40:51,649 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:51,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:51,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1131996261, now seen corresponding path program 81 times [2022-01-31 18:40:51,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:51,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036480483] [2022-01-31 18:40:51,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:51,651 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:51,651 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:51,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:51,653 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:51,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:52,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:52,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:52,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:40:52,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:52,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:40:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:53,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:40:53,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:53,601 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-31 18:40:53,602 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:53,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036480483] [2022-01-31 18:40:53,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1036480483] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:53,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:53,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-01-31 18:40:53,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410634683] [2022-01-31 18:40:53,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:53,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-01-31 18:40:53,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:53,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-01-31 18:40:53,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=2719, Unknown=0, NotChecked=0, Total=2862 [2022-01-31 18:40:53,603 INFO L87 Difference]: Start difference. First operand 2078 states and 3403 transitions. Second operand has 54 states, 53 states have (on average 1.4339622641509433) internal successors, (76), 50 states have internal predecessors, (76), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:57,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:57,718 INFO L93 Difference]: Finished difference Result 2242 states and 3610 transitions. [2022-01-31 18:40:57,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-31 18:40:57,718 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 1.4339622641509433) internal successors, (76), 50 states have internal predecessors, (76), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:40:57,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:57,742 INFO L225 Difference]: With dead ends: 2242 [2022-01-31 18:40:57,742 INFO L226 Difference]: Without dead ends: 2238 [2022-01-31 18:40:57,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2756 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=574, Invalid=10556, Unknown=0, NotChecked=0, Total=11130 [2022-01-31 18:40:57,759 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 99 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 4023 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 4091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 4023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:57,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 207 Invalid, 4091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 4023 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-31 18:40:57,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2238 states. [2022-01-31 18:40:58,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2238 to 2092. [2022-01-31 18:40:58,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2092 states, 1899 states have (on average 1.1332280147446023) internal successors, (2152), 1968 states have internal predecessors, (2152), 110 states have call successors, (110), 16 states have call predecessors, (110), 82 states have return successors, (1167), 107 states have call predecessors, (1167), 109 states have call successors, (1167) [2022-01-31 18:40:58,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 3429 transitions. [2022-01-31 18:40:58,791 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 3429 transitions. Word has length 110 [2022-01-31 18:40:58,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:58,791 INFO L470 AbstractCegarLoop]: Abstraction has 2092 states and 3429 transitions. [2022-01-31 18:40:58,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 1.4339622641509433) internal successors, (76), 50 states have internal predecessors, (76), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:58,791 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 3429 transitions. [2022-01-31 18:40:58,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:40:58,808 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:58,808 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:58,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-01-31 18:40:58,808 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:58,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:58,808 INFO L85 PathProgramCache]: Analyzing trace with hash 153899877, now seen corresponding path program 82 times [2022-01-31 18:40:58,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:58,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629206664] [2022-01-31 18:40:58,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:58,810 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:58,810 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:58,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:58,812 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:58,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:59,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:59,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:59,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:40:59,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:00,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:41:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:00,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:41:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:01,261 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-31 18:41:01,262 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:41:01,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629206664] [2022-01-31 18:41:01,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [629206664] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:41:01,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:41:01,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2022-01-31 18:41:01,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454375420] [2022-01-31 18:41:01,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:41:01,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-01-31 18:41:01,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:41:01,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-01-31 18:41:01,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=3391, Unknown=0, NotChecked=0, Total=3540 [2022-01-31 18:41:01,263 INFO L87 Difference]: Start difference. First operand 2092 states and 3429 transitions. Second operand has 60 states, 59 states have (on average 1.5423728813559323) internal successors, (91), 56 states have internal predecessors, (91), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:41:07,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:41:07,567 INFO L93 Difference]: Finished difference Result 2289 states and 3731 transitions. [2022-01-31 18:41:07,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-01-31 18:41:07,568 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 1.5423728813559323) internal successors, (91), 56 states have internal predecessors, (91), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:41:07,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:41:07,598 INFO L225 Difference]: With dead ends: 2289 [2022-01-31 18:41:07,598 INFO L226 Difference]: Without dead ends: 2285 [2022-01-31 18:41:07,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5866 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=952, Invalid=21100, Unknown=0, NotChecked=0, Total=22052 [2022-01-31 18:41:07,616 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 163 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 4051 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 4145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 4051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-31 18:41:07,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 221 Invalid, 4145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 4051 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-31 18:41:07,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2022-01-31 18:41:08,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 2098. [2022-01-31 18:41:08,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2098 states, 1904 states have (on average 1.1334033613445378) internal successors, (2158), 1974 states have internal predecessors, (2158), 110 states have call successors, (110), 16 states have call predecessors, (110), 83 states have return successors, (1179), 107 states have call predecessors, (1179), 109 states have call successors, (1179) [2022-01-31 18:41:08,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2098 states to 2098 states and 3447 transitions. [2022-01-31 18:41:08,677 INFO L78 Accepts]: Start accepts. Automaton has 2098 states and 3447 transitions. Word has length 110 [2022-01-31 18:41:08,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:41:08,677 INFO L470 AbstractCegarLoop]: Abstraction has 2098 states and 3447 transitions. [2022-01-31 18:41:08,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 1.5423728813559323) internal successors, (91), 56 states have internal predecessors, (91), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:41:08,677 INFO L276 IsEmpty]: Start isEmpty. Operand 2098 states and 3447 transitions. [2022-01-31 18:41:08,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:41:08,694 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:41:08,694 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 8, 7, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:41:08,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-01-31 18:41:08,694 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:41:08,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:41:08,695 INFO L85 PathProgramCache]: Analyzing trace with hash 487340707, now seen corresponding path program 83 times [2022-01-31 18:41:08,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:41:08,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834375267] [2022-01-31 18:41:08,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:41:08,696 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:41:08,696 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:41:08,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:41:08,698 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:41:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:08,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:41:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:08,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:41:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:08,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:41:08,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:09,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:41:09,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:09,839 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:41:09,839 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:41:09,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834375267] [2022-01-31 18:41:09,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [834375267] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:41:09,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:41:09,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-01-31 18:41:09,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725807142] [2022-01-31 18:41:09,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:41:09,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-31 18:41:09,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:41:09,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-31 18:41:09,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1447, Unknown=0, NotChecked=0, Total=1560 [2022-01-31 18:41:09,840 INFO L87 Difference]: Start difference. First operand 2098 states and 3447 transitions. Second operand has 40 states, 39 states have (on average 2.076923076923077) internal successors, (81), 38 states have internal predecessors, (81), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 18:41:13,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:41:13,548 INFO L93 Difference]: Finished difference Result 2476 states and 4199 transitions. [2022-01-31 18:41:13,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-31 18:41:13,548 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.076923076923077) internal successors, (81), 38 states have internal predecessors, (81), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 110 [2022-01-31 18:41:13,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:41:13,646 INFO L225 Difference]: With dead ends: 2476 [2022-01-31 18:41:13,646 INFO L226 Difference]: Without dead ends: 2472 [2022-01-31 18:41:13,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2039 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=491, Invalid=6819, Unknown=0, NotChecked=0, Total=7310 [2022-01-31 18:41:13,664 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 122 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 2674 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 2738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:41:13,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 154 Invalid, 2738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 2674 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 18:41:13,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-01-31 18:41:14,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 2110. [2022-01-31 18:41:14,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2110 states, 1915 states have (on average 1.133681462140992) internal successors, (2171), 1985 states have internal predecessors, (2171), 111 states have call successors, (111), 16 states have call predecessors, (111), 83 states have return successors, (1242), 108 states have call predecessors, (1242), 110 states have call successors, (1242) [2022-01-31 18:41:14,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2110 states to 2110 states and 3524 transitions. [2022-01-31 18:41:14,736 INFO L78 Accepts]: Start accepts. Automaton has 2110 states and 3524 transitions. Word has length 110 [2022-01-31 18:41:14,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:41:14,736 INFO L470 AbstractCegarLoop]: Abstraction has 2110 states and 3524 transitions. [2022-01-31 18:41:14,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.076923076923077) internal successors, (81), 38 states have internal predecessors, (81), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 18:41:14,737 INFO L276 IsEmpty]: Start isEmpty. Operand 2110 states and 3524 transitions. [2022-01-31 18:41:14,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:41:14,753 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:41:14,753 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:41:14,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-01-31 18:41:14,753 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:41:14,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:41:14,754 INFO L85 PathProgramCache]: Analyzing trace with hash -323082909, now seen corresponding path program 84 times [2022-01-31 18:41:14,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:41:14,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201303359] [2022-01-31 18:41:14,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:41:14,755 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:41:14,755 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:41:14,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:41:14,756 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:41:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:15,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:41:15,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:15,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:41:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:15,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:41:15,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:16,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:41:16,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:16,756 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-31 18:41:16,756 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:41:16,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201303359] [2022-01-31 18:41:16,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1201303359] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:41:16,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:41:16,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 18:41:16,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080012422] [2022-01-31 18:41:16,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:41:16,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 18:41:16,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:41:16,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 18:41:16,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=2510, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 18:41:16,757 INFO L87 Difference]: Start difference. First operand 2110 states and 3524 transitions. Second operand has 52 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 48 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:41:20,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:41:20,650 INFO L93 Difference]: Finished difference Result 2217 states and 3716 transitions. [2022-01-31 18:41:20,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-31 18:41:20,650 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 48 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:41:20,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:41:20,680 INFO L225 Difference]: With dead ends: 2217 [2022-01-31 18:41:20,680 INFO L226 Difference]: Without dead ends: 2213 [2022-01-31 18:41:20,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 29 SyntacticMatches, 5 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2348 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=536, Invalid=9564, Unknown=0, NotChecked=0, Total=10100 [2022-01-31 18:41:20,697 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 102 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2810 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 2902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:41:20,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 167 Invalid, 2902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 2810 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-31 18:41:20,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2213 states. [2022-01-31 18:41:21,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2213 to 2159. [2022-01-31 18:41:21,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2159 states, 1957 states have (on average 1.1338783852835974) internal successors, (2219), 2030 states have internal predecessors, (2219), 115 states have call successors, (115), 16 states have call predecessors, (115), 86 states have return successors, (1315), 112 states have call predecessors, (1315), 114 states have call successors, (1315) [2022-01-31 18:41:21,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2159 states to 2159 states and 3649 transitions. [2022-01-31 18:41:21,797 INFO L78 Accepts]: Start accepts. Automaton has 2159 states and 3649 transitions. Word has length 110 [2022-01-31 18:41:21,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:41:21,798 INFO L470 AbstractCegarLoop]: Abstraction has 2159 states and 3649 transitions. [2022-01-31 18:41:21,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 48 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:41:21,798 INFO L276 IsEmpty]: Start isEmpty. Operand 2159 states and 3649 transitions. [2022-01-31 18:41:21,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:41:21,816 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:41:21,816 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:41:21,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-01-31 18:41:21,816 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:41:21,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:41:21,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1410330145, now seen corresponding path program 85 times [2022-01-31 18:41:21,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:41:21,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52544836] [2022-01-31 18:41:21,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:41:21,818 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:41:21,818 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:41:21,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:41:21,820 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:41:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:21,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:41:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:21,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:41:21,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:22,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:41:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:22,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:41:22,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:22,587 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:41:22,587 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:41:22,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52544836] [2022-01-31 18:41:22,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [52544836] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:41:22,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:41:22,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-01-31 18:41:22,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084337242] [2022-01-31 18:41:22,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:41:22,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-31 18:41:22,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:41:22,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-31 18:41:22,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1035, Unknown=0, NotChecked=0, Total=1122 [2022-01-31 18:41:22,588 INFO L87 Difference]: Start difference. First operand 2159 states and 3649 transitions. Second operand has 34 states, 33 states have (on average 2.393939393939394) internal successors, (79), 32 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:41:25,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:41:25,318 INFO L93 Difference]: Finished difference Result 2559 states and 4135 transitions. [2022-01-31 18:41:25,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-31 18:41:25,318 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.393939393939394) internal successors, (79), 32 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:41:25,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:41:25,334 INFO L225 Difference]: With dead ends: 2559 [2022-01-31 18:41:25,334 INFO L226 Difference]: Without dead ends: 2166 [2022-01-31 18:41:25,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1138 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=372, Invalid=4598, Unknown=0, NotChecked=0, Total=4970 [2022-01-31 18:41:25,349 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 95 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 2150 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 2187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 18:41:25,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 131 Invalid, 2187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 2150 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 18:41:25,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2166 states. [2022-01-31 18:41:26,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2166 to 2114. [2022-01-31 18:41:26,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2114 states, 1915 states have (on average 1.135248041775457) internal successors, (2174), 1988 states have internal predecessors, (2174), 113 states have call successors, (113), 16 states have call predecessors, (113), 85 states have return successors, (1285), 109 states have call predecessors, (1285), 112 states have call successors, (1285) [2022-01-31 18:41:26,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 3572 transitions. [2022-01-31 18:41:26,417 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 3572 transitions. Word has length 110 [2022-01-31 18:41:26,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:41:26,418 INFO L470 AbstractCegarLoop]: Abstraction has 2114 states and 3572 transitions. [2022-01-31 18:41:26,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.393939393939394) internal successors, (79), 32 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:41:26,418 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 3572 transitions. [2022-01-31 18:41:26,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:41:26,436 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:41:26,436 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 8, 7, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:41:26,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-01-31 18:41:26,436 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:41:26,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:41:26,437 INFO L85 PathProgramCache]: Analyzing trace with hash -618255965, now seen corresponding path program 86 times [2022-01-31 18:41:26,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:41:26,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171271038] [2022-01-31 18:41:26,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:41:26,438 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:41:26,438 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:41:26,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:41:26,441 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:41:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:26,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:41:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:26,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:41:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:27,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:41:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:27,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:41:27,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:27,537 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:41:27,538 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:41:27,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171271038] [2022-01-31 18:41:27,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1171271038] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:41:27,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:41:27,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2022-01-31 18:41:27,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288794408] [2022-01-31 18:41:27,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:41:27,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-31 18:41:27,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:41:27,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-31 18:41:27,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1526, Unknown=0, NotChecked=0, Total=1640 [2022-01-31 18:41:27,539 INFO L87 Difference]: Start difference. First operand 2114 states and 3572 transitions. Second operand has 41 states, 41 states have (on average 2.048780487804878) internal successors, (84), 39 states have internal predecessors, (84), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:41:30,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:41:30,570 INFO L93 Difference]: Finished difference Result 2168 states and 3664 transitions. [2022-01-31 18:41:30,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-31 18:41:30,570 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.048780487804878) internal successors, (84), 39 states have internal predecessors, (84), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:41:30,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:41:30,583 INFO L225 Difference]: With dead ends: 2168 [2022-01-31 18:41:30,583 INFO L226 Difference]: Without dead ends: 2164 [2022-01-31 18:41:30,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1901 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=463, Invalid=6677, Unknown=0, NotChecked=0, Total=7140 [2022-01-31 18:41:30,600 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 121 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 2249 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 2314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 2249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 18:41:30,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 108 Invalid, 2314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 2249 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 18:41:30,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2164 states. [2022-01-31 18:41:31,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2164 to 2118. [2022-01-31 18:41:31,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2118 states, 1919 states have (on average 1.136008337675873) internal successors, (2180), 1992 states have internal predecessors, (2180), 113 states have call successors, (113), 16 states have call predecessors, (113), 85 states have return successors, (1277), 109 states have call predecessors, (1277), 112 states have call successors, (1277) [2022-01-31 18:41:31,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2118 states to 2118 states and 3570 transitions. [2022-01-31 18:41:31,676 INFO L78 Accepts]: Start accepts. Automaton has 2118 states and 3570 transitions. Word has length 110 [2022-01-31 18:41:31,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:41:31,676 INFO L470 AbstractCegarLoop]: Abstraction has 2118 states and 3570 transitions. [2022-01-31 18:41:31,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.048780487804878) internal successors, (84), 39 states have internal predecessors, (84), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:41:31,676 INFO L276 IsEmpty]: Start isEmpty. Operand 2118 states and 3570 transitions. [2022-01-31 18:41:31,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:41:31,694 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:41:31,695 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 8, 7, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:41:31,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-01-31 18:41:31,695 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:41:31,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:41:31,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1682566625, now seen corresponding path program 87 times [2022-01-31 18:41:31,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:41:31,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802723456] [2022-01-31 18:41:31,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:41:31,696 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:41:31,696 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:41:31,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:41:31,698 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:41:31,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:32,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:41:32,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:32,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:41:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:32,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:41:32,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:33,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:41:33,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:33,712 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 18:41:33,712 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:41:33,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802723456] [2022-01-31 18:41:33,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [802723456] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:41:33,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:41:33,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2022-01-31 18:41:33,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795420123] [2022-01-31 18:41:33,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:41:33,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-01-31 18:41:33,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:41:33,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-01-31 18:41:33,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=2930, Unknown=0, NotChecked=0, Total=3080 [2022-01-31 18:41:33,713 INFO L87 Difference]: Start difference. First operand 2118 states and 3570 transitions. Second operand has 56 states, 55 states have (on average 1.509090909090909) internal successors, (83), 52 states have internal predecessors, (83), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:41:38,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:41:38,310 INFO L93 Difference]: Finished difference Result 2256 states and 3728 transitions. [2022-01-31 18:41:38,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-31 18:41:38,310 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 1.509090909090909) internal successors, (83), 52 states have internal predecessors, (83), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:41:38,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:41:38,328 INFO L225 Difference]: With dead ends: 2256 [2022-01-31 18:41:38,329 INFO L226 Difference]: Without dead ends: 2252 [2022-01-31 18:41:38,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3724 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=638, Invalid=12934, Unknown=0, NotChecked=0, Total=13572 [2022-01-31 18:41:38,344 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 97 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 3936 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 3993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 3936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-31 18:41:38,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 212 Invalid, 3993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 3936 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-31 18:41:38,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2252 states. [2022-01-31 18:41:39,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2252 to 2132. [2022-01-31 18:41:39,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2132 states, 1931 states have (on average 1.1351631279129983) internal successors, (2192), 2004 states have internal predecessors, (2192), 115 states have call successors, (115), 16 states have call predecessors, (115), 85 states have return successors, (1285), 111 states have call predecessors, (1285), 114 states have call successors, (1285) [2022-01-31 18:41:39,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 3592 transitions. [2022-01-31 18:41:39,435 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 3592 transitions. Word has length 110 [2022-01-31 18:41:39,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:41:39,435 INFO L470 AbstractCegarLoop]: Abstraction has 2132 states and 3592 transitions. [2022-01-31 18:41:39,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 1.509090909090909) internal successors, (83), 52 states have internal predecessors, (83), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:41:39,435 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 3592 transitions. [2022-01-31 18:41:39,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:41:39,453 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:41:39,453 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:41:39,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-01-31 18:41:39,453 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:41:39,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:41:39,454 INFO L85 PathProgramCache]: Analyzing trace with hash 671449375, now seen corresponding path program 88 times [2022-01-31 18:41:39,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:41:39,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536332778] [2022-01-31 18:41:39,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:41:39,455 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:41:39,455 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:41:39,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:41:39,456 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:41:39,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:39,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:41:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:39,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:41:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:39,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:41:39,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:40,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:41:40,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:40,558 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:41:40,558 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:41:40,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536332778] [2022-01-31 18:41:40,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [536332778] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:41:40,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:41:40,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-01-31 18:41:40,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556907252] [2022-01-31 18:41:40,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:41:40,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-31 18:41:40,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:41:40,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-31 18:41:40,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1456, Unknown=0, NotChecked=0, Total=1560 [2022-01-31 18:41:40,560 INFO L87 Difference]: Start difference. First operand 2132 states and 3592 transitions. Second operand has 40 states, 40 states have (on average 2.125) internal successors, (85), 38 states have internal predecessors, (85), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 18:41:44,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:41:44,109 INFO L93 Difference]: Finished difference Result 2306 states and 3991 transitions. [2022-01-31 18:41:44,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-31 18:41:44,110 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.125) internal successors, (85), 38 states have internal predecessors, (85), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 110 [2022-01-31 18:41:44,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:41:44,156 INFO L225 Difference]: With dead ends: 2306 [2022-01-31 18:41:44,157 INFO L226 Difference]: Without dead ends: 2302 [2022-01-31 18:41:44,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2242 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=491, Invalid=7519, Unknown=0, NotChecked=0, Total=8010 [2022-01-31 18:41:44,174 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 107 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 3133 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 3177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 3133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:41:44,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 152 Invalid, 3177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 3133 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-31 18:41:44,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2022-01-31 18:41:45,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 2199. [2022-01-31 18:41:45,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2199 states, 1991 states have (on average 1.1341034655951783) internal successors, (2258), 2067 states have internal predecessors, (2258), 121 states have call successors, (121), 16 states have call predecessors, (121), 86 states have return successors, (1398), 115 states have call predecessors, (1398), 120 states have call successors, (1398) [2022-01-31 18:41:45,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2199 states to 2199 states and 3777 transitions. [2022-01-31 18:41:45,386 INFO L78 Accepts]: Start accepts. Automaton has 2199 states and 3777 transitions. Word has length 110 [2022-01-31 18:41:45,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:41:45,386 INFO L470 AbstractCegarLoop]: Abstraction has 2199 states and 3777 transitions. [2022-01-31 18:41:45,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.125) internal successors, (85), 38 states have internal predecessors, (85), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 18:41:45,386 INFO L276 IsEmpty]: Start isEmpty. Operand 2199 states and 3777 transitions. [2022-01-31 18:41:45,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:41:45,405 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:41:45,405 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:41:45,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-01-31 18:41:45,405 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:41:45,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:41:45,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1329478243, now seen corresponding path program 89 times [2022-01-31 18:41:45,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:41:45,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25148369] [2022-01-31 18:41:45,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:41:45,407 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:41:45,407 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:41:45,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:41:45,408 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:41:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:45,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:41:45,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:45,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:41:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:45,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:41:45,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:46,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:41:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:46,248 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:41:46,248 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:41:46,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25148369] [2022-01-31 18:41:46,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [25148369] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:41:46,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:41:46,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-01-31 18:41:46,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076510156] [2022-01-31 18:41:46,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:41:46,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-31 18:41:46,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:41:46,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-31 18:41:46,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1107, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 18:41:46,249 INFO L87 Difference]: Start difference. First operand 2199 states and 3777 transitions. Second operand has 35 states, 34 states have (on average 2.323529411764706) internal successors, (79), 33 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:41:49,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:41:49,175 INFO L93 Difference]: Finished difference Result 2784 states and 4460 transitions. [2022-01-31 18:41:49,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-31 18:41:49,176 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.323529411764706) internal successors, (79), 33 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:41:49,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:41:49,192 INFO L225 Difference]: With dead ends: 2784 [2022-01-31 18:41:49,192 INFO L226 Difference]: Without dead ends: 2219 [2022-01-31 18:41:49,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=336, Invalid=4634, Unknown=0, NotChecked=0, Total=4970 [2022-01-31 18:41:49,209 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 99 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2520 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 2559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:41:49,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 156 Invalid, 2559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2520 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 18:41:49,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2219 states. [2022-01-31 18:41:50,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2219 to 2180. [2022-01-31 18:41:50,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2180 states, 1974 states have (on average 1.1332320162107397) internal successors, (2237), 2049 states have internal predecessors, (2237), 120 states have call successors, (120), 16 states have call predecessors, (120), 85 states have return successors, (1389), 114 states have call predecessors, (1389), 119 states have call successors, (1389) [2022-01-31 18:41:50,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 3746 transitions. [2022-01-31 18:41:50,353 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 3746 transitions. Word has length 110 [2022-01-31 18:41:50,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:41:50,353 INFO L470 AbstractCegarLoop]: Abstraction has 2180 states and 3746 transitions. [2022-01-31 18:41:50,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.323529411764706) internal successors, (79), 33 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:41:50,353 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 3746 transitions. [2022-01-31 18:41:50,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:41:50,373 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:41:50,373 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:41:50,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-01-31 18:41:50,373 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:41:50,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:41:50,373 INFO L85 PathProgramCache]: Analyzing trace with hash -2051700893, now seen corresponding path program 90 times [2022-01-31 18:41:50,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:41:50,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335351561] [2022-01-31 18:41:50,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:41:50,374 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:41:50,374 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:41:50,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:41:50,377 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:41:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:50,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:41:50,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:50,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:41:50,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:51,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:41:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:51,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:41:51,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:51,956 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-31 18:41:51,956 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:41:51,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335351561] [2022-01-31 18:41:51,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1335351561] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:41:51,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:41:51,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-01-31 18:41:51,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014749441] [2022-01-31 18:41:51,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:41:51,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-31 18:41:51,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:41:51,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-31 18:41:51,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1953, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 18:41:51,957 INFO L87 Difference]: Start difference. First operand 2180 states and 3746 transitions. Second operand has 46 states, 45 states have (on average 1.5333333333333334) internal successors, (69), 42 states have internal predecessors, (69), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:41:55,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:41:55,661 INFO L93 Difference]: Finished difference Result 2257 states and 3832 transitions. [2022-01-31 18:41:55,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-31 18:41:55,661 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 1.5333333333333334) internal successors, (69), 42 states have internal predecessors, (69), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:41:55,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:41:55,678 INFO L225 Difference]: With dead ends: 2257 [2022-01-31 18:41:55,679 INFO L226 Difference]: Without dead ends: 2253 [2022-01-31 18:41:55,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1836 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=434, Invalid=7756, Unknown=0, NotChecked=0, Total=8190 [2022-01-31 18:41:55,697 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 94 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 3006 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 3048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 3006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:41:55,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 163 Invalid, 3048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 3006 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-31 18:41:55,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2253 states. [2022-01-31 18:41:56,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2253 to 2180. [2022-01-31 18:41:56,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2180 states, 1974 states have (on average 1.1332320162107397) internal successors, (2237), 2049 states have internal predecessors, (2237), 120 states have call successors, (120), 16 states have call predecessors, (120), 85 states have return successors, (1389), 114 states have call predecessors, (1389), 119 states have call successors, (1389) [2022-01-31 18:41:56,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 3746 transitions. [2022-01-31 18:41:56,846 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 3746 transitions. Word has length 110 [2022-01-31 18:41:56,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:41:56,846 INFO L470 AbstractCegarLoop]: Abstraction has 2180 states and 3746 transitions. [2022-01-31 18:41:56,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 1.5333333333333334) internal successors, (69), 42 states have internal predecessors, (69), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:41:56,847 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 3746 transitions. [2022-01-31 18:41:56,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:41:56,866 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:41:56,866 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:41:56,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-01-31 18:41:56,866 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:41:56,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:41:56,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1265170019, now seen corresponding path program 91 times [2022-01-31 18:41:56,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:41:56,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485966818] [2022-01-31 18:41:56,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:41:56,868 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:41:56,868 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:41:56,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:41:56,870 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:41:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:57,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:41:57,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:57,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:41:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:57,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:41:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:58,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:41:58,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:58,528 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 18:41:58,529 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:41:58,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485966818] [2022-01-31 18:41:58,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1485966818] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:41:58,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:41:58,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-01-31 18:41:58,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141827443] [2022-01-31 18:41:58,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:41:58,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-31 18:41:58,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:41:58,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-31 18:41:58,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=2226, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 18:41:58,530 INFO L87 Difference]: Start difference. First operand 2180 states and 3746 transitions. Second operand has 49 states, 48 states have (on average 1.5625) internal successors, (75), 45 states have internal predecessors, (75), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:42:02,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:42:02,619 INFO L93 Difference]: Finished difference Result 2358 states and 3989 transitions. [2022-01-31 18:42:02,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-31 18:42:02,620 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 1.5625) internal successors, (75), 45 states have internal predecessors, (75), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:42:02,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:42:02,649 INFO L225 Difference]: With dead ends: 2358 [2022-01-31 18:42:02,649 INFO L226 Difference]: Without dead ends: 2354 [2022-01-31 18:42:02,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2302 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=499, Invalid=9401, Unknown=0, NotChecked=0, Total=9900 [2022-01-31 18:42:02,671 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 100 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 3512 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 3567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 3512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-31 18:42:02,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 193 Invalid, 3567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 3512 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-31 18:42:02,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2354 states. [2022-01-31 18:42:03,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2354 to 2200. [2022-01-31 18:42:03,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2200 states, 1991 states have (on average 1.132596685082873) internal successors, (2255), 2067 states have internal predecessors, (2255), 122 states have call successors, (122), 16 states have call predecessors, (122), 86 states have return successors, (1420), 116 states have call predecessors, (1420), 121 states have call successors, (1420) [2022-01-31 18:42:03,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 3797 transitions. [2022-01-31 18:42:03,907 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 3797 transitions. Word has length 110 [2022-01-31 18:42:03,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:42:03,907 INFO L470 AbstractCegarLoop]: Abstraction has 2200 states and 3797 transitions. [2022-01-31 18:42:03,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 1.5625) internal successors, (75), 45 states have internal predecessors, (75), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:42:03,907 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 3797 transitions. [2022-01-31 18:42:03,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:42:03,927 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:42:03,927 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 8, 7, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:42:03,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-01-31 18:42:03,928 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:42:03,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:42:03,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1332150815, now seen corresponding path program 92 times [2022-01-31 18:42:03,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:42:03,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759328621] [2022-01-31 18:42:03,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:42:03,929 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:42:03,929 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:42:03,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:42:03,931 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:42:03,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:04,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:42:04,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:04,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:42:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:04,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:42:04,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:04,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:42:04,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:04,760 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-31 18:42:04,760 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:42:04,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759328621] [2022-01-31 18:42:04,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1759328621] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:42:04,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:42:04,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-01-31 18:42:04,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528076187] [2022-01-31 18:42:04,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:42:04,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-31 18:42:04,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:42:04,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-31 18:42:04,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1107, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 18:42:04,761 INFO L87 Difference]: Start difference. First operand 2200 states and 3797 transitions. Second operand has 35 states, 34 states have (on average 2.323529411764706) internal successors, (79), 33 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:42:07,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:42:07,763 INFO L93 Difference]: Finished difference Result 2564 states and 4202 transitions. [2022-01-31 18:42:07,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-31 18:42:07,763 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.323529411764706) internal successors, (79), 33 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:42:07,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:42:07,777 INFO L225 Difference]: With dead ends: 2564 [2022-01-31 18:42:07,777 INFO L226 Difference]: Without dead ends: 2221 [2022-01-31 18:42:07,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1200 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=375, Invalid=5175, Unknown=0, NotChecked=0, Total=5550 [2022-01-31 18:42:07,796 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 99 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 2590 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 2629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:42:07,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 135 Invalid, 2629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2590 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 18:42:07,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2221 states. [2022-01-31 18:42:08,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2221 to 2188. [2022-01-31 18:42:08,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2188 states, 1980 states have (on average 1.1333333333333333) internal successors, (2244), 2056 states have internal predecessors, (2244), 121 states have call successors, (121), 16 states have call predecessors, (121), 86 states have return successors, (1409), 115 states have call predecessors, (1409), 120 states have call successors, (1409) [2022-01-31 18:42:08,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 3774 transitions. [2022-01-31 18:42:08,952 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 3774 transitions. Word has length 110 [2022-01-31 18:42:08,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:42:08,953 INFO L470 AbstractCegarLoop]: Abstraction has 2188 states and 3774 transitions. [2022-01-31 18:42:08,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.323529411764706) internal successors, (79), 33 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:42:08,953 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 3774 transitions. [2022-01-31 18:42:08,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:42:08,972 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:42:08,973 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:42:08,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-01-31 18:42:08,973 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:42:08,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:42:08,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1685239197, now seen corresponding path program 93 times [2022-01-31 18:42:08,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:42:08,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473972791] [2022-01-31 18:42:08,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:42:08,974 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:42:08,974 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:42:08,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:42:08,977 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:42:08,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:09,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:42:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:09,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:42:09,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:09,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:42:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:09,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:42:09,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:10,004 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 18:42:10,004 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:42:10,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473972791] [2022-01-31 18:42:10,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1473972791] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:42:10,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:42:10,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-01-31 18:42:10,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941521635] [2022-01-31 18:42:10,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:42:10,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-31 18:42:10,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:42:10,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-31 18:42:10,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1447, Unknown=0, NotChecked=0, Total=1560 [2022-01-31 18:42:10,006 INFO L87 Difference]: Start difference. First operand 2188 states and 3774 transitions. Second operand has 40 states, 39 states have (on average 2.051282051282051) internal successors, (80), 38 states have internal predecessors, (80), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 18:42:13,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:42:13,592 INFO L93 Difference]: Finished difference Result 2576 states and 4448 transitions. [2022-01-31 18:42:13,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-31 18:42:13,593 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.051282051282051) internal successors, (80), 38 states have internal predecessors, (80), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 110 [2022-01-31 18:42:13,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:42:13,705 INFO L225 Difference]: With dead ends: 2576 [2022-01-31 18:42:13,705 INFO L226 Difference]: Without dead ends: 2572 [2022-01-31 18:42:13,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2031 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=491, Invalid=6819, Unknown=0, NotChecked=0, Total=7310 [2022-01-31 18:42:13,733 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 136 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 2021 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 2091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 18:42:13,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 125 Invalid, 2091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 2021 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 18:42:13,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2572 states. [2022-01-31 18:42:14,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2572 to 2214. [2022-01-31 18:42:14,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2214 states, 2003 states have (on average 1.1318022965551673) internal successors, (2267), 2080 states have internal predecessors, (2267), 124 states have call successors, (124), 16 states have call predecessors, (124), 86 states have return successors, (1447), 117 states have call predecessors, (1447), 123 states have call successors, (1447) [2022-01-31 18:42:14,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2214 states to 2214 states and 3838 transitions. [2022-01-31 18:42:14,924 INFO L78 Accepts]: Start accepts. Automaton has 2214 states and 3838 transitions. Word has length 110 [2022-01-31 18:42:14,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:42:14,924 INFO L470 AbstractCegarLoop]: Abstraction has 2214 states and 3838 transitions. [2022-01-31 18:42:14,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.051282051282051) internal successors, (80), 38 states have internal predecessors, (80), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 18:42:14,924 INFO L276 IsEmpty]: Start isEmpty. Operand 2214 states and 3838 transitions. [2022-01-31 18:42:14,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:42:14,945 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:42:14,945 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 10, 5, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:42:14,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-01-31 18:42:14,945 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:42:14,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:42:14,946 INFO L85 PathProgramCache]: Analyzing trace with hash -2078266207, now seen corresponding path program 94 times [2022-01-31 18:42:14,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:42:14,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346523214] [2022-01-31 18:42:14,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:42:14,948 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:42:14,948 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:42:14,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:42:14,949 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:42:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:15,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:42:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:15,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:42:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:15,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:42:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:15,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:42:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:16,155 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 18:42:16,155 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:42:16,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346523214] [2022-01-31 18:42:16,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1346523214] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:42:16,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:42:16,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-01-31 18:42:16,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002241620] [2022-01-31 18:42:16,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:42:16,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-31 18:42:16,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:42:16,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-31 18:42:16,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1613, Unknown=0, NotChecked=0, Total=1722 [2022-01-31 18:42:16,157 INFO L87 Difference]: Start difference. First operand 2214 states and 3838 transitions. Second operand has 42 states, 42 states have (on average 2.0) internal successors, (84), 40 states have internal predecessors, (84), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:42:19,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:42:19,781 INFO L93 Difference]: Finished difference Result 2257 states and 3881 transitions. [2022-01-31 18:42:19,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-31 18:42:19,782 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.0) internal successors, (84), 40 states have internal predecessors, (84), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:42:19,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:42:19,792 INFO L225 Difference]: With dead ends: 2257 [2022-01-31 18:42:19,793 INFO L226 Difference]: Without dead ends: 2253 [2022-01-31 18:42:19,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2075 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=483, Invalid=7707, Unknown=0, NotChecked=0, Total=8190 [2022-01-31 18:42:19,811 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 107 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2784 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 2843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:42:19,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 129 Invalid, 2843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2784 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-31 18:42:19,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2253 states. [2022-01-31 18:42:20,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2253 to 2212. [2022-01-31 18:42:20,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2212 states, 2002 states have (on average 1.1318681318681318) internal successors, (2266), 2078 states have internal predecessors, (2266), 123 states have call successors, (123), 16 states have call predecessors, (123), 86 states have return successors, (1426), 117 states have call predecessors, (1426), 122 states have call successors, (1426) [2022-01-31 18:42:20,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 3815 transitions. [2022-01-31 18:42:20,994 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 3815 transitions. Word has length 110 [2022-01-31 18:42:20,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:42:20,994 INFO L470 AbstractCegarLoop]: Abstraction has 2212 states and 3815 transitions. [2022-01-31 18:42:20,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.0) internal successors, (84), 40 states have internal predecessors, (84), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:42:20,994 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 3815 transitions. [2022-01-31 18:42:21,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:42:21,014 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:42:21,015 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 10, 5, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:42:21,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-01-31 18:42:21,015 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:42:21,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:42:21,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1598610849, now seen corresponding path program 95 times [2022-01-31 18:42:21,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:42:21,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582583908] [2022-01-31 18:42:21,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:42:21,016 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:42:21,016 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:42:21,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:42:21,018 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:42:21,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:21,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:42:21,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:21,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:42:21,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:21,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:42:21,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:21,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:42:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:21,972 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 18:42:21,972 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:42:21,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582583908] [2022-01-31 18:42:21,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [582583908] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:42:21,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:42:21,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-01-31 18:42:21,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486174911] [2022-01-31 18:42:21,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:42:21,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-31 18:42:21,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:42:21,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-31 18:42:21,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1299, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 18:42:21,973 INFO L87 Difference]: Start difference. First operand 2212 states and 3815 transitions. Second operand has 38 states, 37 states have (on average 2.1621621621621623) internal successors, (80), 36 states have internal predecessors, (80), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 18:42:25,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:42:25,451 INFO L93 Difference]: Finished difference Result 2561 states and 4387 transitions. [2022-01-31 18:42:25,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-31 18:42:25,451 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.1621621621621623) internal successors, (80), 36 states have internal predecessors, (80), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 110 [2022-01-31 18:42:25,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:42:25,559 INFO L225 Difference]: With dead ends: 2561 [2022-01-31 18:42:25,560 INFO L226 Difference]: Without dead ends: 2557 [2022-01-31 18:42:25,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1684 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=446, Invalid=5874, Unknown=0, NotChecked=0, Total=6320 [2022-01-31 18:42:25,589 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 137 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 2267 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 2341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:42:25,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 138 Invalid, 2341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2267 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 18:42:25,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2557 states. [2022-01-31 18:42:26,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2557 to 2190. [2022-01-31 18:42:26,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2190 states, 1981 states have (on average 1.13326602725896) internal successors, (2245), 2058 states have internal predecessors, (2245), 122 states have call successors, (122), 16 states have call predecessors, (122), 86 states have return successors, (1381), 115 states have call predecessors, (1381), 121 states have call successors, (1381) [2022-01-31 18:42:26,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2190 states to 2190 states and 3748 transitions. [2022-01-31 18:42:26,881 INFO L78 Accepts]: Start accepts. Automaton has 2190 states and 3748 transitions. Word has length 110 [2022-01-31 18:42:26,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:42:26,881 INFO L470 AbstractCegarLoop]: Abstraction has 2190 states and 3748 transitions. [2022-01-31 18:42:26,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.1621621621621623) internal successors, (80), 36 states have internal predecessors, (80), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 18:42:26,882 INFO L276 IsEmpty]: Start isEmpty. Operand 2190 states and 3748 transitions. [2022-01-31 18:42:26,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:42:26,901 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:42:26,901 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 11, 5, 5, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:42:26,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-01-31 18:42:26,902 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:42:26,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:42:26,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1205583839, now seen corresponding path program 96 times [2022-01-31 18:42:26,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:42:26,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708767455] [2022-01-31 18:42:26,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:42:26,903 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:42:26,903 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:42:26,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:42:26,905 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:42:26,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:27,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:42:27,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:27,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:42:27,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:27,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:42:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:28,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:42:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:28,880 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-31 18:42:28,881 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:42:28,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708767455] [2022-01-31 18:42:28,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [708767455] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:42:28,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:42:28,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-01-31 18:42:28,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546452610] [2022-01-31 18:42:28,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:42:28,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-01-31 18:42:28,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:42:28,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-01-31 18:42:28,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=2682, Unknown=0, NotChecked=0, Total=2862 [2022-01-31 18:42:28,882 INFO L87 Difference]: Start difference. First operand 2190 states and 3748 transitions. Second operand has 54 states, 53 states have (on average 1.509433962264151) internal successors, (80), 50 states have internal predecessors, (80), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:42:32,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:42:32,262 INFO L93 Difference]: Finished difference Result 2243 states and 3822 transitions. [2022-01-31 18:42:32,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-31 18:42:32,263 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 1.509433962264151) internal successors, (80), 50 states have internal predecessors, (80), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:42:32,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:42:32,280 INFO L225 Difference]: With dead ends: 2243 [2022-01-31 18:42:32,280 INFO L226 Difference]: Without dead ends: 2239 [2022-01-31 18:42:32,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1794 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=470, Invalid=6502, Unknown=0, NotChecked=0, Total=6972 [2022-01-31 18:42:32,299 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 88 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2391 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 2455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:42:32,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 163 Invalid, 2455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 2391 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 18:42:32,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2239 states. [2022-01-31 18:42:33,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2239 to 2208. [2022-01-31 18:42:33,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2208 states, 1996 states have (on average 1.1332665330661322) internal successors, (2262), 2074 states have internal predecessors, (2262), 125 states have call successors, (125), 16 states have call predecessors, (125), 86 states have return successors, (1398), 117 states have call predecessors, (1398), 124 states have call successors, (1398) [2022-01-31 18:42:33,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2208 states to 2208 states and 3785 transitions. [2022-01-31 18:42:33,487 INFO L78 Accepts]: Start accepts. Automaton has 2208 states and 3785 transitions. Word has length 110 [2022-01-31 18:42:33,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:42:33,487 INFO L470 AbstractCegarLoop]: Abstraction has 2208 states and 3785 transitions. [2022-01-31 18:42:33,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 1.509433962264151) internal successors, (80), 50 states have internal predecessors, (80), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:42:33,487 INFO L276 IsEmpty]: Start isEmpty. Operand 2208 states and 3785 transitions. [2022-01-31 18:42:33,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:42:33,507 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:42:33,507 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 11, 5, 5, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:42:33,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-01-31 18:42:33,508 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:42:33,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:42:33,508 INFO L85 PathProgramCache]: Analyzing trace with hash -2135656669, now seen corresponding path program 97 times [2022-01-31 18:42:33,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:42:33,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112508585] [2022-01-31 18:42:33,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:42:33,509 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:42:33,509 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:42:33,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:42:33,511 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:42:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:33,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:42:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:33,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:42:33,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:34,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:42:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:34,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:42:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:34,503 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 16 proven. 40 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 18:42:34,503 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:42:34,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112508585] [2022-01-31 18:42:34,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2112508585] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:42:34,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:42:34,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-01-31 18:42:34,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968049537] [2022-01-31 18:42:34,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:42:34,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-31 18:42:34,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:42:34,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-31 18:42:34,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1374, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 18:42:34,504 INFO L87 Difference]: Start difference. First operand 2208 states and 3785 transitions. Second operand has 39 states, 38 states have (on average 2.1052631578947367) internal successors, (80), 37 states have internal predecessors, (80), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:42:38,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:42:38,103 INFO L93 Difference]: Finished difference Result 2415 states and 4032 transitions. [2022-01-31 18:42:38,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-31 18:42:38,104 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 2.1052631578947367) internal successors, (80), 37 states have internal predecessors, (80), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:42:38,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:42:38,141 INFO L225 Difference]: With dead ends: 2415 [2022-01-31 18:42:38,142 INFO L226 Difference]: Without dead ends: 2411 [2022-01-31 18:42:38,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2094 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=510, Invalid=6972, Unknown=0, NotChecked=0, Total=7482 [2022-01-31 18:42:38,161 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 122 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 2475 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 2556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:42:38,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 108 Invalid, 2556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2475 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 18:42:38,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2411 states. [2022-01-31 18:42:39,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2411 to 2206. [2022-01-31 18:42:39,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2206 states, 1995 states have (on average 1.1333333333333333) internal successors, (2261), 2072 states have internal predecessors, (2261), 124 states have call successors, (124), 16 states have call predecessors, (124), 86 states have return successors, (1391), 117 states have call predecessors, (1391), 123 states have call successors, (1391) [2022-01-31 18:42:39,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2206 states to 2206 states and 3776 transitions. [2022-01-31 18:42:39,349 INFO L78 Accepts]: Start accepts. Automaton has 2206 states and 3776 transitions. Word has length 110 [2022-01-31 18:42:39,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:42:39,349 INFO L470 AbstractCegarLoop]: Abstraction has 2206 states and 3776 transitions. [2022-01-31 18:42:39,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 2.1052631578947367) internal successors, (80), 37 states have internal predecessors, (80), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:42:39,349 INFO L276 IsEmpty]: Start isEmpty. Operand 2206 states and 3776 transitions. [2022-01-31 18:42:39,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:42:39,370 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:42:39,370 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 12, 5, 5, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:42:39,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-01-31 18:42:39,370 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:42:39,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:42:39,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1766283617, now seen corresponding path program 98 times [2022-01-31 18:42:39,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:42:39,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161864781] [2022-01-31 18:42:39,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:42:39,372 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:42:39,372 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:42:39,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:42:39,374 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:42:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:39,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:42:39,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:39,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:42:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:40,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:42:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:41,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:42:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:41,579 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-31 18:42:41,580 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:42:41,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161864781] [2022-01-31 18:42:41,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1161864781] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:42:41,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:42:41,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-01-31 18:42:41,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236456513] [2022-01-31 18:42:41,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:42:41,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-01-31 18:42:41,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:42:41,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-01-31 18:42:41,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=3087, Unknown=0, NotChecked=0, Total=3306 [2022-01-31 18:42:41,581 INFO L87 Difference]: Start difference. First operand 2206 states and 3776 transitions. Second operand has 58 states, 57 states have (on average 1.456140350877193) internal successors, (83), 54 states have internal predecessors, (83), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:42:44,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:42:44,694 INFO L93 Difference]: Finished difference Result 2239 states and 3825 transitions. [2022-01-31 18:42:44,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-31 18:42:44,694 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 1.456140350877193) internal successors, (83), 54 states have internal predecessors, (83), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:42:44,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:42:44,711 INFO L225 Difference]: With dead ends: 2239 [2022-01-31 18:42:44,711 INFO L226 Difference]: Without dead ends: 2235 [2022-01-31 18:42:44,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1570 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=518, Invalid=6622, Unknown=0, NotChecked=0, Total=7140 [2022-01-31 18:42:44,730 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 79 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 2065 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 2136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 2065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 18:42:44,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 148 Invalid, 2136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 2065 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 18:42:44,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2235 states. [2022-01-31 18:42:45,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2235 to 2220. [2022-01-31 18:42:45,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2220 states, 2008 states have (on average 1.1334661354581674) internal successors, (2276), 2085 states have internal predecessors, (2276), 125 states have call successors, (125), 16 states have call predecessors, (125), 86 states have return successors, (1402), 118 states have call predecessors, (1402), 124 states have call successors, (1402) [2022-01-31 18:42:45,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2220 states to 2220 states and 3803 transitions. [2022-01-31 18:42:45,942 INFO L78 Accepts]: Start accepts. Automaton has 2220 states and 3803 transitions. Word has length 110 [2022-01-31 18:42:45,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:42:45,943 INFO L470 AbstractCegarLoop]: Abstraction has 2220 states and 3803 transitions. [2022-01-31 18:42:45,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 1.456140350877193) internal successors, (83), 54 states have internal predecessors, (83), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:42:45,943 INFO L276 IsEmpty]: Start isEmpty. Operand 2220 states and 3803 transitions. [2022-01-31 18:42:45,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:42:45,963 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:42:45,963 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 12, 5, 5, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:42:45,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-01-31 18:42:45,963 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:42:45,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:42:45,964 INFO L85 PathProgramCache]: Analyzing trace with hash 788187233, now seen corresponding path program 99 times [2022-01-31 18:42:45,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:42:45,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454797332] [2022-01-31 18:42:45,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:42:45,965 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:42:45,965 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:42:45,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:42:45,967 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:42:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:46,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:42:46,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:46,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:42:46,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:46,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:42:46,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:47,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:42:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:47,846 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 18:42:47,847 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:42:47,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454797332] [2022-01-31 18:42:47,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [454797332] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:42:47,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:42:47,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-01-31 18:42:47,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915520742] [2022-01-31 18:42:47,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:42:47,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-01-31 18:42:47,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:42:47,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-01-31 18:42:47,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=2581, Unknown=0, NotChecked=0, Total=2756 [2022-01-31 18:42:47,848 INFO L87 Difference]: Start difference. First operand 2220 states and 3803 transitions. Second operand has 53 states, 52 states have (on average 1.5576923076923077) internal successors, (81), 49 states have internal predecessors, (81), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:42:51,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:42:51,446 INFO L93 Difference]: Finished difference Result 2265 states and 3880 transitions. [2022-01-31 18:42:51,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-31 18:42:51,446 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 1.5576923076923077) internal successors, (81), 49 states have internal predecessors, (81), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:42:51,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:42:51,463 INFO L225 Difference]: With dead ends: 2265 [2022-01-31 18:42:51,463 INFO L226 Difference]: Without dead ends: 2261 [2022-01-31 18:42:51,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2000 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=514, Invalid=7142, Unknown=0, NotChecked=0, Total=7656 [2022-01-31 18:42:51,486 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 102 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 2681 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 2756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:42:51,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 180 Invalid, 2756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 2681 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-31 18:42:51,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2261 states. [2022-01-31 18:42:52,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2261 to 2227. [2022-01-31 18:42:52,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2227 states, 2014 states have (on average 1.1340615690168818) internal successors, (2284), 2092 states have internal predecessors, (2284), 125 states have call successors, (125), 16 states have call predecessors, (125), 87 states have return successors, (1418), 118 states have call predecessors, (1418), 124 states have call successors, (1418) [2022-01-31 18:42:52,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2227 states to 2227 states and 3827 transitions. [2022-01-31 18:42:52,781 INFO L78 Accepts]: Start accepts. Automaton has 2227 states and 3827 transitions. Word has length 110 [2022-01-31 18:42:52,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:42:52,781 INFO L470 AbstractCegarLoop]: Abstraction has 2227 states and 3827 transitions. [2022-01-31 18:42:52,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 1.5576923076923077) internal successors, (81), 49 states have internal predecessors, (81), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:42:52,781 INFO L276 IsEmpty]: Start isEmpty. Operand 2227 states and 3827 transitions. [2022-01-31 18:42:52,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:42:52,802 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:42:52,802 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 12, 5, 5, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:42:52,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-01-31 18:42:52,802 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:42:52,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:42:52,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1795236199, now seen corresponding path program 100 times [2022-01-31 18:42:52,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:42:52,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648355532] [2022-01-31 18:42:52,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:42:52,803 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:42:52,804 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:42:52,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:42:52,806 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:42:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:52,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:42:52,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:52,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:42:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:53,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:42:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:53,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:42:53,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:53,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 18:42:53,213 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:42:53,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648355532] [2022-01-31 18:42:53,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [648355532] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:42:53,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:42:53,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-01-31 18:42:53,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323847188] [2022-01-31 18:42:53,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:42:53,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-31 18:42:53,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:42:53,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-31 18:42:53,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2022-01-31 18:42:53,214 INFO L87 Difference]: Start difference. First operand 2227 states and 3827 transitions. Second operand has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 22 states have internal predecessors, (65), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:42:55,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:42:55,533 INFO L93 Difference]: Finished difference Result 2747 states and 4409 transitions. [2022-01-31 18:42:55,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-31 18:42:55,534 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 22 states have internal predecessors, (65), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:42:55,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:42:55,545 INFO L225 Difference]: With dead ends: 2747 [2022-01-31 18:42:55,545 INFO L226 Difference]: Without dead ends: 2419 [2022-01-31 18:42:55,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=305, Invalid=1951, Unknown=0, NotChecked=0, Total=2256 [2022-01-31 18:42:55,568 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 79 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:42:55,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 75 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:42:55,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2419 states. [2022-01-31 18:42:56,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2419 to 2004. [2022-01-31 18:42:56,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2004 states, 1811 states have (on average 1.1419105466593042) internal successors, (2068), 1884 states have internal predecessors, (2068), 107 states have call successors, (107), 17 states have call predecessors, (107), 85 states have return successors, (809), 102 states have call predecessors, (809), 106 states have call successors, (809) [2022-01-31 18:42:56,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2004 states to 2004 states and 2984 transitions. [2022-01-31 18:42:56,674 INFO L78 Accepts]: Start accepts. Automaton has 2004 states and 2984 transitions. Word has length 110 [2022-01-31 18:42:56,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:42:56,674 INFO L470 AbstractCegarLoop]: Abstraction has 2004 states and 2984 transitions. [2022-01-31 18:42:56,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 22 states have internal predecessors, (65), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:42:56,674 INFO L276 IsEmpty]: Start isEmpty. Operand 2004 states and 2984 transitions. [2022-01-31 18:42:56,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:42:56,688 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:42:56,688 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 11, 5, 5, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:42:56,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-01-31 18:42:56,688 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:42:56,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:42:56,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1857275813, now seen corresponding path program 101 times [2022-01-31 18:42:56,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:42:56,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300237136] [2022-01-31 18:42:56,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:42:56,689 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:42:56,689 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:42:56,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:42:56,691 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:42:56,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:57,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:42:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:57,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:42:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:57,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:42:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:58,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:42:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:58,540 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-31 18:42:58,541 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:42:58,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300237136] [2022-01-31 18:42:58,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [300237136] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:42:58,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:42:58,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2022-01-31 18:42:58,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596677251] [2022-01-31 18:42:58,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:42:58,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-01-31 18:42:58,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:42:58,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-01-31 18:42:58,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=2922, Unknown=0, NotChecked=0, Total=3080 [2022-01-31 18:42:58,542 INFO L87 Difference]: Start difference. First operand 2004 states and 2984 transitions. Second operand has 56 states, 55 states have (on average 1.5818181818181818) internal successors, (87), 52 states have internal predecessors, (87), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:43:03,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:43:03,337 INFO L93 Difference]: Finished difference Result 2281 states and 3381 transitions. [2022-01-31 18:43:03,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-31 18:43:03,337 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 1.5818181818181818) internal successors, (87), 52 states have internal predecessors, (87), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:43:03,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:43:03,360 INFO L225 Difference]: With dead ends: 2281 [2022-01-31 18:43:03,360 INFO L226 Difference]: Without dead ends: 2277 [2022-01-31 18:43:03,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2790 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=556, Invalid=11216, Unknown=0, NotChecked=0, Total=11772 [2022-01-31 18:43:03,375 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 118 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 4538 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 4602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 4538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:43:03,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 202 Invalid, 4602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 4538 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-31 18:43:03,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2277 states. [2022-01-31 18:43:04,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2277 to 2056. [2022-01-31 18:43:04,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2056 states, 1856 states have (on average 1.1417025862068966) internal successors, (2119), 1933 states have internal predecessors, (2119), 110 states have call successors, (110), 17 states have call predecessors, (110), 89 states have return successors, (865), 105 states have call predecessors, (865), 109 states have call successors, (865) [2022-01-31 18:43:04,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2056 states to 2056 states and 3094 transitions. [2022-01-31 18:43:04,428 INFO L78 Accepts]: Start accepts. Automaton has 2056 states and 3094 transitions. Word has length 110 [2022-01-31 18:43:04,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:43:04,428 INFO L470 AbstractCegarLoop]: Abstraction has 2056 states and 3094 transitions. [2022-01-31 18:43:04,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 1.5818181818181818) internal successors, (87), 52 states have internal predecessors, (87), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:43:04,428 INFO L276 IsEmpty]: Start isEmpty. Operand 2056 states and 3094 transitions. [2022-01-31 18:43:04,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:43:04,442 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:43:04,442 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 10, 5, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:43:04,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-01-31 18:43:04,443 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:43:04,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:43:04,443 INFO L85 PathProgramCache]: Analyzing trace with hash 2076130531, now seen corresponding path program 102 times [2022-01-31 18:43:04,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:43:04,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028532646] [2022-01-31 18:43:04,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:43:04,444 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:43:04,444 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:43:04,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:43:04,446 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:43:04,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:04,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:43:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:04,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:43:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:04,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:43:04,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:05,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:43:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:05,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:43:05,199 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:43:05,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028532646] [2022-01-31 18:43:05,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1028532646] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:43:05,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:43:05,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-01-31 18:43:05,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205159476] [2022-01-31 18:43:05,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:43:05,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-31 18:43:05,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:43:05,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-31 18:43:05,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1027, Unknown=0, NotChecked=0, Total=1122 [2022-01-31 18:43:05,200 INFO L87 Difference]: Start difference. First operand 2056 states and 3094 transitions. Second operand has 34 states, 34 states have (on average 2.3823529411764706) internal successors, (81), 32 states have internal predecessors, (81), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 18:43:08,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:43:08,021 INFO L93 Difference]: Finished difference Result 2232 states and 3370 transitions. [2022-01-31 18:43:08,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-31 18:43:08,021 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.3823529411764706) internal successors, (81), 32 states have internal predecessors, (81), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 110 [2022-01-31 18:43:08,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:43:08,092 INFO L225 Difference]: With dead ends: 2232 [2022-01-31 18:43:08,092 INFO L226 Difference]: Without dead ends: 2228 [2022-01-31 18:43:08,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1357 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=446, Invalid=4956, Unknown=0, NotChecked=0, Total=5402 [2022-01-31 18:43:08,108 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 98 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 2146 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 2207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:43:08,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 138 Invalid, 2207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2146 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 18:43:08,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2022-01-31 18:43:09,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 2197. [2022-01-31 18:43:09,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2197 states, 1984 states have (on average 1.1365927419354838) internal successors, (2255), 2064 states have internal predecessors, (2255), 122 states have call successors, (122), 17 states have call predecessors, (122), 90 states have return successors, (918), 115 states have call predecessors, (918), 121 states have call successors, (918) [2022-01-31 18:43:09,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2197 states to 2197 states and 3295 transitions. [2022-01-31 18:43:09,363 INFO L78 Accepts]: Start accepts. Automaton has 2197 states and 3295 transitions. Word has length 110 [2022-01-31 18:43:09,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:43:09,363 INFO L470 AbstractCegarLoop]: Abstraction has 2197 states and 3295 transitions. [2022-01-31 18:43:09,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.3823529411764706) internal successors, (81), 32 states have internal predecessors, (81), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 18:43:09,363 INFO L276 IsEmpty]: Start isEmpty. Operand 2197 states and 3295 transitions. [2022-01-31 18:43:09,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:43:09,379 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:43:09,379 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:43:09,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-01-31 18:43:09,380 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:43:09,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:43:09,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1658733925, now seen corresponding path program 103 times [2022-01-31 18:43:09,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:43:09,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628503984] [2022-01-31 18:43:09,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:43:09,381 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:43:09,381 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:43:09,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:43:09,384 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:43:09,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:09,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:43:09,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:09,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:43:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:09,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:43:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:09,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:43:09,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:09,641 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:43:09,641 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:43:09,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628503984] [2022-01-31 18:43:09,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1628503984] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:43:09,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:43:09,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-31 18:43:09,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996400297] [2022-01-31 18:43:09,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:43:09,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-31 18:43:09,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:43:09,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-31 18:43:09,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-01-31 18:43:09,642 INFO L87 Difference]: Start difference. First operand 2197 states and 3295 transitions. Second operand has 18 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 16 states have internal predecessors, (59), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:43:11,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:43:11,737 INFO L93 Difference]: Finished difference Result 2739 states and 3968 transitions. [2022-01-31 18:43:11,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-31 18:43:11,738 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 16 states have internal predecessors, (59), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:43:11,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:43:11,787 INFO L225 Difference]: With dead ends: 2739 [2022-01-31 18:43:11,788 INFO L226 Difference]: Without dead ends: 2351 [2022-01-31 18:43:11,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=211, Invalid=1195, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 18:43:11,806 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 84 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:43:11,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 78 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:43:11,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2351 states. [2022-01-31 18:43:13,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2351 to 2126. [2022-01-31 18:43:13,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2126 states, 1919 states have (on average 1.136008337675873) internal successors, (2180), 1995 states have internal predecessors, (2180), 120 states have call successors, (120), 17 states have call predecessors, (120), 86 states have return successors, (849), 113 states have call predecessors, (849), 119 states have call successors, (849) [2022-01-31 18:43:13,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2126 states to 2126 states and 3149 transitions. [2022-01-31 18:43:13,023 INFO L78 Accepts]: Start accepts. Automaton has 2126 states and 3149 transitions. Word has length 110 [2022-01-31 18:43:13,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:43:13,024 INFO L470 AbstractCegarLoop]: Abstraction has 2126 states and 3149 transitions. [2022-01-31 18:43:13,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 16 states have internal predecessors, (59), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:43:13,024 INFO L276 IsEmpty]: Start isEmpty. Operand 2126 states and 3149 transitions. [2022-01-31 18:43:13,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:43:13,039 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:43:13,039 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 8, 7, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:43:13,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-01-31 18:43:13,039 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:43:13,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:43:13,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1326421341, now seen corresponding path program 104 times [2022-01-31 18:43:13,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:43:13,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547733630] [2022-01-31 18:43:13,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:43:13,041 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:43:13,041 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:43:13,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:43:13,043 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:43:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:13,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:43:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:13,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:43:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:14,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:43:14,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:14,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:43:14,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:15,068 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-31 18:43:15,068 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:43:15,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547733630] [2022-01-31 18:43:15,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [547733630] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:43:15,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:43:15,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-01-31 18:43:15,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087310495] [2022-01-31 18:43:15,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:43:15,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-01-31 18:43:15,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:43:15,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-01-31 18:43:15,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=2618, Unknown=0, NotChecked=0, Total=2756 [2022-01-31 18:43:15,069 INFO L87 Difference]: Start difference. First operand 2126 states and 3149 transitions. Second operand has 53 states, 52 states have (on average 1.5192307692307692) internal successors, (79), 49 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:43:19,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:43:19,473 INFO L93 Difference]: Finished difference Result 2334 states and 3396 transitions. [2022-01-31 18:43:19,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-31 18:43:19,474 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 1.5192307692307692) internal successors, (79), 49 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:43:19,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:43:19,502 INFO L225 Difference]: With dead ends: 2334 [2022-01-31 18:43:19,502 INFO L226 Difference]: Without dead ends: 2330 [2022-01-31 18:43:19,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2953 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=558, Invalid=11214, Unknown=0, NotChecked=0, Total=11772 [2022-01-31 18:43:19,520 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 113 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 3012 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 3101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 3012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:43:19,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 185 Invalid, 3101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 3012 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-31 18:43:19,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2330 states. [2022-01-31 18:43:20,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2330 to 2160. [2022-01-31 18:43:20,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2160 states, 1948 states have (on average 1.1344969199178645) internal successors, (2210), 2025 states have internal predecessors, (2210), 124 states have call successors, (124), 17 states have call predecessors, (124), 87 states have return successors, (864), 117 states have call predecessors, (864), 123 states have call successors, (864) [2022-01-31 18:43:20,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2160 states to 2160 states and 3198 transitions. [2022-01-31 18:43:20,771 INFO L78 Accepts]: Start accepts. Automaton has 2160 states and 3198 transitions. Word has length 110 [2022-01-31 18:43:20,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:43:20,771 INFO L470 AbstractCegarLoop]: Abstraction has 2160 states and 3198 transitions. [2022-01-31 18:43:20,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 1.5192307692307692) internal successors, (79), 49 states have internal predecessors, (79), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:43:20,771 INFO L276 IsEmpty]: Start isEmpty. Operand 2160 states and 3198 transitions. [2022-01-31 18:43:20,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:43:20,788 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:43:20,788 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 10, 5, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:43:20,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-01-31 18:43:20,788 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:43:20,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:43:20,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1803404127, now seen corresponding path program 105 times [2022-01-31 18:43:20,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:43:20,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060247565] [2022-01-31 18:43:20,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:43:20,790 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:43:20,790 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:43:20,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:43:20,792 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:43:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:21,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:43:21,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:21,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:43:21,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:21,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:43:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:22,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:43:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:22,871 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 18:43:22,871 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:43:22,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060247565] [2022-01-31 18:43:22,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2060247565] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:43:22,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:43:22,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2022-01-31 18:43:22,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955561984] [2022-01-31 18:43:22,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:43:22,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-01-31 18:43:22,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:43:22,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-01-31 18:43:22,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=3002, Unknown=0, NotChecked=0, Total=3192 [2022-01-31 18:43:22,872 INFO L87 Difference]: Start difference. First operand 2160 states and 3198 transitions. Second operand has 57 states, 56 states have (on average 1.625) internal successors, (91), 53 states have internal predecessors, (91), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:43:27,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:43:27,003 INFO L93 Difference]: Finished difference Result 2252 states and 3306 transitions. [2022-01-31 18:43:27,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-31 18:43:27,004 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 1.625) internal successors, (91), 53 states have internal predecessors, (91), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:43:27,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:43:27,027 INFO L225 Difference]: With dead ends: 2252 [2022-01-31 18:43:27,027 INFO L226 Difference]: Without dead ends: 2248 [2022-01-31 18:43:27,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2018 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=568, Invalid=8938, Unknown=0, NotChecked=0, Total=9506 [2022-01-31 18:43:27,044 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 109 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 3122 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 3219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 3122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:43:27,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 167 Invalid, 3219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 3122 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-31 18:43:27,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2248 states. [2022-01-31 18:43:28,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2248 to 2174. [2022-01-31 18:43:28,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2174 states, 1960 states have (on average 1.133673469387755) internal successors, (2222), 2037 states have internal predecessors, (2222), 126 states have call successors, (126), 17 states have call predecessors, (126), 87 states have return successors, (868), 119 states have call predecessors, (868), 125 states have call successors, (868) [2022-01-31 18:43:28,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2174 states to 2174 states and 3216 transitions. [2022-01-31 18:43:28,308 INFO L78 Accepts]: Start accepts. Automaton has 2174 states and 3216 transitions. Word has length 110 [2022-01-31 18:43:28,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:43:28,308 INFO L470 AbstractCegarLoop]: Abstraction has 2174 states and 3216 transitions. [2022-01-31 18:43:28,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 1.625) internal successors, (91), 53 states have internal predecessors, (91), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:43:28,309 INFO L276 IsEmpty]: Start isEmpty. Operand 2174 states and 3216 transitions. [2022-01-31 18:43:28,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:43:28,324 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:43:28,324 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 8, 7, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:43:28,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-01-31 18:43:28,324 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:43:28,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:43:28,324 INFO L85 PathProgramCache]: Analyzing trace with hash 734706595, now seen corresponding path program 106 times [2022-01-31 18:43:28,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:43:28,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857287763] [2022-01-31 18:43:28,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:43:28,325 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:43:28,326 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:43:28,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:43:28,328 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:43:28,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:28,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:43:28,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:28,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:43:28,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:29,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:43:29,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:29,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:43:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:30,242 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:43:30,242 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:43:30,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857287763] [2022-01-31 18:43:30,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [857287763] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:43:30,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:43:30,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2022-01-31 18:43:30,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578597512] [2022-01-31 18:43:30,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:43:30,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-01-31 18:43:30,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:43:30,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-01-31 18:43:30,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=2814, Unknown=0, NotChecked=0, Total=2970 [2022-01-31 18:43:30,244 INFO L87 Difference]: Start difference. First operand 2174 states and 3216 transitions. Second operand has 55 states, 54 states have (on average 1.6296296296296295) internal successors, (88), 51 states have internal predecessors, (88), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:43:34,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:43:34,512 INFO L93 Difference]: Finished difference Result 2283 states and 3365 transitions. [2022-01-31 18:43:34,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-31 18:43:34,513 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 1.6296296296296295) internal successors, (88), 51 states have internal predecessors, (88), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:43:34,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:43:34,525 INFO L225 Difference]: With dead ends: 2283 [2022-01-31 18:43:34,525 INFO L226 Difference]: Without dead ends: 2279 [2022-01-31 18:43:34,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2740 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=555, Invalid=10787, Unknown=0, NotChecked=0, Total=11342 [2022-01-31 18:43:34,545 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 120 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 3661 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 3729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:43:34,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 184 Invalid, 3729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3661 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-31 18:43:34,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2279 states. [2022-01-31 18:43:35,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2279 to 2188. [2022-01-31 18:43:35,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2188 states, 1972 states have (on average 1.1348884381338742) internal successors, (2238), 2051 states have internal predecessors, (2238), 126 states have call successors, (126), 17 states have call predecessors, (126), 89 states have return successors, (898), 119 states have call predecessors, (898), 125 states have call successors, (898) [2022-01-31 18:43:35,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 3262 transitions. [2022-01-31 18:43:35,811 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 3262 transitions. Word has length 110 [2022-01-31 18:43:35,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:43:35,811 INFO L470 AbstractCegarLoop]: Abstraction has 2188 states and 3262 transitions. [2022-01-31 18:43:35,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 1.6296296296296295) internal successors, (88), 51 states have internal predecessors, (88), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:43:35,811 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 3262 transitions. [2022-01-31 18:43:35,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:43:35,830 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:43:35,830 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:43:35,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-01-31 18:43:35,831 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:43:35,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:43:35,831 INFO L85 PathProgramCache]: Analyzing trace with hash 2024411935, now seen corresponding path program 107 times [2022-01-31 18:43:35,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:43:35,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159725141] [2022-01-31 18:43:35,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:43:35,832 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:43:35,832 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:43:35,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:43:35,835 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:43:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:35,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:43:35,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:35,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:43:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:36,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:43:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:36,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:43:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:36,432 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:43:36,432 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:43:36,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159725141] [2022-01-31 18:43:36,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [159725141] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:43:36,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:43:36,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-01-31 18:43:36,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551422723] [2022-01-31 18:43:36,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:43:36,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-31 18:43:36,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:43:36,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-31 18:43:36,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=858, Unknown=0, NotChecked=0, Total=930 [2022-01-31 18:43:36,433 INFO L87 Difference]: Start difference. First operand 2188 states and 3262 transitions. Second operand has 31 states, 30 states have (on average 2.533333333333333) internal successors, (76), 29 states have internal predecessors, (76), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:43:39,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:43:39,461 INFO L93 Difference]: Finished difference Result 2488 states and 3650 transitions. [2022-01-31 18:43:39,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-31 18:43:39,462 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.533333333333333) internal successors, (76), 29 states have internal predecessors, (76), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:43:39,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:43:39,519 INFO L225 Difference]: With dead ends: 2488 [2022-01-31 18:43:39,519 INFO L226 Difference]: Without dead ends: 2484 [2022-01-31 18:43:39,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 615 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=262, Invalid=3278, Unknown=0, NotChecked=0, Total=3540 [2022-01-31 18:43:39,535 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 94 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 2345 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 2378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 18:43:39,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 157 Invalid, 2378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 2345 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 18:43:39,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2022-01-31 18:43:40,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 2236. [2022-01-31 18:43:40,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2236 states, 2016 states have (on average 1.1324404761904763) internal successors, (2283), 2095 states have internal predecessors, (2283), 130 states have call successors, (130), 17 states have call predecessors, (130), 89 states have return successors, (937), 123 states have call predecessors, (937), 129 states have call successors, (937) [2022-01-31 18:43:40,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2236 states to 2236 states and 3350 transitions. [2022-01-31 18:43:40,838 INFO L78 Accepts]: Start accepts. Automaton has 2236 states and 3350 transitions. Word has length 110 [2022-01-31 18:43:40,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:43:40,838 INFO L470 AbstractCegarLoop]: Abstraction has 2236 states and 3350 transitions. [2022-01-31 18:43:40,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.533333333333333) internal successors, (76), 29 states have internal predecessors, (76), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:43:40,839 INFO L276 IsEmpty]: Start isEmpty. Operand 2236 states and 3350 transitions. [2022-01-31 18:43:40,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:43:40,855 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:43:40,855 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 10, 5, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:43:40,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-01-31 18:43:40,855 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:43:40,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:43:40,855 INFO L85 PathProgramCache]: Analyzing trace with hash 257723809, now seen corresponding path program 108 times [2022-01-31 18:43:40,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:43:40,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613666971] [2022-01-31 18:43:40,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:43:40,856 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:43:40,856 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:43:40,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:43:40,858 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:43:40,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:41,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:43:41,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:41,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:43:41,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:41,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:43:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:42,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:43:42,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:43,325 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:43:43,325 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:43:43,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [613666971] [2022-01-31 18:43:43,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [613666971] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:43:43,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:43:43,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2022-01-31 18:43:43,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511943792] [2022-01-31 18:43:43,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:43:43,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-01-31 18:43:43,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:43:43,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-01-31 18:43:43,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=4082, Unknown=0, NotChecked=0, Total=4290 [2022-01-31 18:43:43,327 INFO L87 Difference]: Start difference. First operand 2236 states and 3350 transitions. Second operand has 66 states, 65 states have (on average 1.5384615384615385) internal successors, (100), 62 states have internal predecessors, (100), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:43:48,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:43:48,812 INFO L93 Difference]: Finished difference Result 2367 states and 3496 transitions. [2022-01-31 18:43:48,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-01-31 18:43:48,812 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 1.5384615384615385) internal successors, (100), 62 states have internal predecessors, (100), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:43:48,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:43:48,833 INFO L225 Difference]: With dead ends: 2367 [2022-01-31 18:43:48,833 INFO L226 Difference]: Without dead ends: 2363 [2022-01-31 18:43:48,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5086 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=920, Invalid=17986, Unknown=0, NotChecked=0, Total=18906 [2022-01-31 18:43:48,855 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 171 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 3688 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 3817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 3688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-31 18:43:48,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 206 Invalid, 3817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 3688 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-31 18:43:48,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2022-01-31 18:43:50,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 2243. [2022-01-31 18:43:50,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2243 states, 2022 states have (on average 1.1330365974282888) internal successors, (2291), 2102 states have internal predecessors, (2291), 130 states have call successors, (130), 17 states have call predecessors, (130), 90 states have return successors, (947), 123 states have call predecessors, (947), 129 states have call successors, (947) [2022-01-31 18:43:50,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2243 states to 2243 states and 3368 transitions. [2022-01-31 18:43:50,169 INFO L78 Accepts]: Start accepts. Automaton has 2243 states and 3368 transitions. Word has length 110 [2022-01-31 18:43:50,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:43:50,169 INFO L470 AbstractCegarLoop]: Abstraction has 2243 states and 3368 transitions. [2022-01-31 18:43:50,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 1.5384615384615385) internal successors, (100), 62 states have internal predecessors, (100), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:43:50,169 INFO L276 IsEmpty]: Start isEmpty. Operand 2243 states and 3368 transitions. [2022-01-31 18:43:50,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:43:50,186 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:43:50,187 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 8, 7, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:43:50,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-01-31 18:43:50,187 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:43:50,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:43:50,187 INFO L85 PathProgramCache]: Analyzing trace with hash -673700571, now seen corresponding path program 109 times [2022-01-31 18:43:50,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:43:50,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97015167] [2022-01-31 18:43:50,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:43:50,188 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:43:50,188 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:43:50,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:43:50,190 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:43:50,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:50,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:43:50,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:50,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:43:50,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:51,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:43:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:52,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:43:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:52,744 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-31 18:43:52,744 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:43:52,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97015167] [2022-01-31 18:43:52,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [97015167] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:43:52,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:43:52,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-01-31 18:43:52,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387748935] [2022-01-31 18:43:52,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:43:52,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-01-31 18:43:52,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:43:52,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-01-31 18:43:52,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=3616, Unknown=0, NotChecked=0, Total=3782 [2022-01-31 18:43:52,745 INFO L87 Difference]: Start difference. First operand 2243 states and 3368 transitions. Second operand has 62 states, 61 states have (on average 1.4918032786885247) internal successors, (91), 58 states have internal predecessors, (91), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:43:58,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:43:58,460 INFO L93 Difference]: Finished difference Result 2441 states and 3592 transitions. [2022-01-31 18:43:58,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-31 18:43:58,461 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 1.4918032786885247) internal successors, (91), 58 states have internal predecessors, (91), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:43:58,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:43:58,486 INFO L225 Difference]: With dead ends: 2441 [2022-01-31 18:43:58,486 INFO L226 Difference]: Without dead ends: 2437 [2022-01-31 18:43:58,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5557 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=863, Invalid=18597, Unknown=0, NotChecked=0, Total=19460 [2022-01-31 18:43:58,504 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 148 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 3420 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 3525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 3420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:43:58,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 200 Invalid, 3525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 3420 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-31 18:43:58,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2437 states. [2022-01-31 18:43:59,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2437 to 2243. [2022-01-31 18:43:59,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2243 states, 2022 states have (on average 1.1330365974282888) internal successors, (2291), 2102 states have internal predecessors, (2291), 130 states have call successors, (130), 17 states have call predecessors, (130), 90 states have return successors, (946), 123 states have call predecessors, (946), 129 states have call successors, (946) [2022-01-31 18:43:59,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2243 states to 2243 states and 3367 transitions. [2022-01-31 18:43:59,819 INFO L78 Accepts]: Start accepts. Automaton has 2243 states and 3367 transitions. Word has length 110 [2022-01-31 18:43:59,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:43:59,820 INFO L470 AbstractCegarLoop]: Abstraction has 2243 states and 3367 transitions. [2022-01-31 18:43:59,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 1.4918032786885247) internal successors, (91), 58 states have internal predecessors, (91), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:43:59,820 INFO L276 IsEmpty]: Start isEmpty. Operand 2243 states and 3367 transitions. [2022-01-31 18:43:59,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:43:59,836 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:43:59,836 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:43:59,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-01-31 18:43:59,836 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:43:59,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:43:59,837 INFO L85 PathProgramCache]: Analyzing trace with hash -454845853, now seen corresponding path program 110 times [2022-01-31 18:43:59,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:43:59,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814414235] [2022-01-31 18:43:59,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:43:59,838 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:43:59,838 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:43:59,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:43:59,840 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:43:59,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:00,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:44:00,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:00,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:44:00,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:00,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:44:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:01,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:44:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:02,097 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-31 18:44:02,097 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:44:02,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814414235] [2022-01-31 18:44:02,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [814414235] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:44:02,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:44:02,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2022-01-31 18:44:02,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941117989] [2022-01-31 18:44:02,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:44:02,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-01-31 18:44:02,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:44:02,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-01-31 18:44:02,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=3497, Unknown=0, NotChecked=0, Total=3660 [2022-01-31 18:44:02,099 INFO L87 Difference]: Start difference. First operand 2243 states and 3367 transitions. Second operand has 61 states, 60 states have (on average 1.55) internal successors, (93), 57 states have internal predecessors, (93), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:44:07,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:44:07,937 INFO L93 Difference]: Finished difference Result 2399 states and 3565 transitions. [2022-01-31 18:44:07,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-01-31 18:44:07,937 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 1.55) internal successors, (93), 57 states have internal predecessors, (93), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:44:07,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:44:07,959 INFO L225 Difference]: With dead ends: 2399 [2022-01-31 18:44:07,959 INFO L226 Difference]: Without dead ends: 2395 [2022-01-31 18:44:07,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4902 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=820, Invalid=17812, Unknown=0, NotChecked=0, Total=18632 [2022-01-31 18:44:07,976 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 161 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 3461 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 3562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 3461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:44:07,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 207 Invalid, 3562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 3461 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-31 18:44:07,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2395 states. [2022-01-31 18:44:09,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2395 to 2243. [2022-01-31 18:44:09,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2243 states, 2022 states have (on average 1.1330365974282888) internal successors, (2291), 2102 states have internal predecessors, (2291), 130 states have call successors, (130), 17 states have call predecessors, (130), 90 states have return successors, (945), 123 states have call predecessors, (945), 129 states have call successors, (945) [2022-01-31 18:44:09,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2243 states to 2243 states and 3366 transitions. [2022-01-31 18:44:09,296 INFO L78 Accepts]: Start accepts. Automaton has 2243 states and 3366 transitions. Word has length 110 [2022-01-31 18:44:09,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:44:09,296 INFO L470 AbstractCegarLoop]: Abstraction has 2243 states and 3366 transitions. [2022-01-31 18:44:09,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 1.55) internal successors, (93), 57 states have internal predecessors, (93), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:44:09,296 INFO L276 IsEmpty]: Start isEmpty. Operand 2243 states and 3366 transitions. [2022-01-31 18:44:09,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:44:09,313 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:44:09,313 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 10, 5, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:44:09,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-01-31 18:44:09,313 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:44:09,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:44:09,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1845976737, now seen corresponding path program 111 times [2022-01-31 18:44:09,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:44:09,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153766093] [2022-01-31 18:44:09,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:44:09,315 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:44:09,315 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:44:09,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:44:09,317 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:44:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:09,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:44:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:09,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:44:09,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:10,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:44:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:10,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:44:10,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:11,058 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:44:11,058 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:44:11,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153766093] [2022-01-31 18:44:11,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [153766093] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:44:11,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:44:11,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-01-31 18:44:11,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687697641] [2022-01-31 18:44:11,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:44:11,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-01-31 18:44:11,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:44:11,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-01-31 18:44:11,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=2609, Unknown=0, NotChecked=0, Total=2756 [2022-01-31 18:44:11,059 INFO L87 Difference]: Start difference. First operand 2243 states and 3366 transitions. Second operand has 53 states, 52 states have (on average 1.6923076923076923) internal successors, (88), 49 states have internal predecessors, (88), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:44:15,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:44:15,360 INFO L93 Difference]: Finished difference Result 2378 states and 3510 transitions. [2022-01-31 18:44:15,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-31 18:44:15,360 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 1.6923076923076923) internal successors, (88), 49 states have internal predecessors, (88), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:44:15,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:44:15,373 INFO L225 Difference]: With dead ends: 2378 [2022-01-31 18:44:15,373 INFO L226 Difference]: Without dead ends: 2374 [2022-01-31 18:44:15,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2817 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=582, Invalid=11190, Unknown=0, NotChecked=0, Total=11772 [2022-01-31 18:44:15,392 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 117 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 3364 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 3430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:44:15,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 168 Invalid, 3430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 3364 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-31 18:44:15,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2374 states. [2022-01-31 18:44:16,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2374 to 2243. [2022-01-31 18:44:16,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2243 states, 2022 states have (on average 1.1330365974282888) internal successors, (2291), 2102 states have internal predecessors, (2291), 130 states have call successors, (130), 17 states have call predecessors, (130), 90 states have return successors, (944), 123 states have call predecessors, (944), 129 states have call successors, (944) [2022-01-31 18:44:16,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2243 states to 2243 states and 3365 transitions. [2022-01-31 18:44:16,708 INFO L78 Accepts]: Start accepts. Automaton has 2243 states and 3365 transitions. Word has length 110 [2022-01-31 18:44:16,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:44:16,708 INFO L470 AbstractCegarLoop]: Abstraction has 2243 states and 3365 transitions. [2022-01-31 18:44:16,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 1.6923076923076923) internal successors, (88), 49 states have internal predecessors, (88), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:44:16,709 INFO L276 IsEmpty]: Start isEmpty. Operand 2243 states and 3365 transitions. [2022-01-31 18:44:16,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:44:16,726 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:44:16,726 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:44:16,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2022-01-31 18:44:16,726 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:44:16,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:44:16,726 INFO L85 PathProgramCache]: Analyzing trace with hash 253460903, now seen corresponding path program 112 times [2022-01-31 18:44:16,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:44:16,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968525997] [2022-01-31 18:44:16,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:44:16,728 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:44:16,728 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:44:16,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:44:16,730 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:44:16,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:17,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:44:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:17,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:44:17,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:17,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:44:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:17,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:44:17,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:18,619 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-31 18:44:18,620 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:44:18,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968525997] [2022-01-31 18:44:18,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1968525997] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:44:18,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:44:18,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2022-01-31 18:44:18,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502464977] [2022-01-31 18:44:18,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:44:18,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-01-31 18:44:18,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:44:18,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-01-31 18:44:18,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=2825, Unknown=0, NotChecked=0, Total=2970 [2022-01-31 18:44:18,621 INFO L87 Difference]: Start difference. First operand 2243 states and 3365 transitions. Second operand has 55 states, 53 states have (on average 1.4528301886792452) internal successors, (77), 51 states have internal predecessors, (77), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:44:23,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:44:23,017 INFO L93 Difference]: Finished difference Result 2337 states and 3493 transitions. [2022-01-31 18:44:23,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-31 18:44:23,017 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 53 states have (on average 1.4528301886792452) internal successors, (77), 51 states have internal predecessors, (77), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:44:23,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:44:23,042 INFO L225 Difference]: With dead ends: 2337 [2022-01-31 18:44:23,043 INFO L226 Difference]: Without dead ends: 2333 [2022-01-31 18:44:23,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2156 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=466, Invalid=9634, Unknown=0, NotChecked=0, Total=10100 [2022-01-31 18:44:23,060 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 89 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 3740 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 3799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 3740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:44:23,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 199 Invalid, 3799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 3740 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-31 18:44:23,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2333 states. [2022-01-31 18:44:24,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2333 to 2257. [2022-01-31 18:44:24,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2257 states, 2034 states have (on average 1.1327433628318584) internal successors, (2304), 2114 states have internal predecessors, (2304), 132 states have call successors, (132), 17 states have call predecessors, (132), 90 states have return successors, (972), 125 states have call predecessors, (972), 131 states have call successors, (972) [2022-01-31 18:44:24,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3408 transitions. [2022-01-31 18:44:24,401 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 3408 transitions. Word has length 110 [2022-01-31 18:44:24,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:44:24,402 INFO L470 AbstractCegarLoop]: Abstraction has 2257 states and 3408 transitions. [2022-01-31 18:44:24,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 53 states have (on average 1.4528301886792452) internal successors, (77), 51 states have internal predecessors, (77), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:44:24,402 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 3408 transitions. [2022-01-31 18:44:24,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:44:24,420 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:44:24,420 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 10, 5, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:44:24,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-01-31 18:44:24,420 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:44:24,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:44:24,420 INFO L85 PathProgramCache]: Analyzing trace with hash -139566107, now seen corresponding path program 113 times [2022-01-31 18:44:24,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:44:24,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729613864] [2022-01-31 18:44:24,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:44:24,422 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:44:24,422 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:44:24,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:44:24,425 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:44:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:25,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:44:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:25,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:44:25,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:25,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:44:25,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:26,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:44:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:27,678 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 18:44:27,678 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:44:27,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1729613864] [2022-01-31 18:44:27,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1729613864] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:44:27,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:44:27,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2022-01-31 18:44:27,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233580721] [2022-01-31 18:44:27,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:44:27,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-01-31 18:44:27,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:44:27,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-01-31 18:44:27,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=4125, Unknown=0, NotChecked=0, Total=4290 [2022-01-31 18:44:27,747 INFO L87 Difference]: Start difference. First operand 2257 states and 3408 transitions. Second operand has 66 states, 64 states have (on average 1.4375) internal successors, (92), 62 states have internal predecessors, (92), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:44:34,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:44:34,891 INFO L93 Difference]: Finished difference Result 2346 states and 3602 transitions. [2022-01-31 18:44:34,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-31 18:44:34,891 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 64 states have (on average 1.4375) internal successors, (92), 62 states have internal predecessors, (92), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:44:34,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:44:34,920 INFO L225 Difference]: With dead ends: 2346 [2022-01-31 18:44:34,920 INFO L226 Difference]: Without dead ends: 2342 [2022-01-31 18:44:34,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3867 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=639, Invalid=16391, Unknown=0, NotChecked=0, Total=17030 [2022-01-31 18:44:34,941 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 120 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 6236 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 6312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 6236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:44:34,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 246 Invalid, 6312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 6236 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-01-31 18:44:34,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2342 states. [2022-01-31 18:44:36,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2342 to 2287. [2022-01-31 18:44:36,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2287 states, 2059 states have (on average 1.1330743079164642) internal successors, (2333), 2142 states have internal predecessors, (2333), 135 states have call successors, (135), 17 states have call predecessors, (135), 92 states have return successors, (1063), 127 states have call predecessors, (1063), 134 states have call successors, (1063) [2022-01-31 18:44:36,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 3531 transitions. [2022-01-31 18:44:36,292 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 3531 transitions. Word has length 110 [2022-01-31 18:44:36,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:44:36,292 INFO L470 AbstractCegarLoop]: Abstraction has 2287 states and 3531 transitions. [2022-01-31 18:44:36,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 64 states have (on average 1.4375) internal successors, (92), 62 states have internal predecessors, (92), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:44:36,293 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 3531 transitions. [2022-01-31 18:44:36,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:44:36,313 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:44:36,313 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 10, 5, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:44:36,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2022-01-31 18:44:36,314 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:44:36,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:44:36,314 INFO L85 PathProgramCache]: Analyzing trace with hash -757656347, now seen corresponding path program 114 times [2022-01-31 18:44:36,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:44:36,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075004674] [2022-01-31 18:44:36,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:44:36,316 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:44:36,316 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:44:36,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:44:36,319 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:44:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:36,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:44:36,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:36,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:44:36,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:37,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:44:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:37,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:44:37,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:38,147 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-31 18:44:38,147 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:44:38,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075004674] [2022-01-31 18:44:38,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1075004674] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:44:38,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:44:38,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 18:44:38,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549389543] [2022-01-31 18:44:38,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:44:38,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 18:44:38,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:44:38,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 18:44:38,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=2518, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 18:44:38,149 INFO L87 Difference]: Start difference. First operand 2287 states and 3531 transitions. Second operand has 52 states, 50 states have (on average 1.54) internal successors, (77), 48 states have internal predecessors, (77), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:44:42,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:44:42,749 INFO L93 Difference]: Finished difference Result 2318 states and 3563 transitions. [2022-01-31 18:44:42,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-31 18:44:42,750 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 50 states have (on average 1.54) internal successors, (77), 48 states have internal predecessors, (77), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:44:42,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:44:42,763 INFO L225 Difference]: With dead ends: 2318 [2022-01-31 18:44:42,763 INFO L226 Difference]: Without dead ends: 2314 [2022-01-31 18:44:42,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1943 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=500, Invalid=9400, Unknown=0, NotChecked=0, Total=9900 [2022-01-31 18:44:42,784 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 98 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 3466 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 3528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 3466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-31 18:44:42,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 194 Invalid, 3528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 3466 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-31 18:44:42,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2314 states. [2022-01-31 18:44:44,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2314 to 2287. [2022-01-31 18:44:44,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2287 states, 2059 states have (on average 1.1330743079164642) internal successors, (2333), 2142 states have internal predecessors, (2333), 135 states have call successors, (135), 17 states have call predecessors, (135), 92 states have return successors, (1061), 127 states have call predecessors, (1061), 134 states have call successors, (1061) [2022-01-31 18:44:44,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 3529 transitions. [2022-01-31 18:44:44,145 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 3529 transitions. Word has length 110 [2022-01-31 18:44:44,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:44:44,146 INFO L470 AbstractCegarLoop]: Abstraction has 2287 states and 3529 transitions. [2022-01-31 18:44:44,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 50 states have (on average 1.54) internal successors, (77), 48 states have internal predecessors, (77), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:44:44,146 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 3529 transitions. [2022-01-31 18:44:44,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:44:44,164 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:44:44,164 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 11, 5, 5, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:44:44,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2022-01-31 18:44:44,165 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:44:44,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:44:44,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1150683357, now seen corresponding path program 115 times [2022-01-31 18:44:44,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:44:44,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144925193] [2022-01-31 18:44:44,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:44:44,166 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:44:44,166 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:44:44,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:44:44,169 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:44:44,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:44,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:44:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:44,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:44:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:45,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:44:45,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:46,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:44:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:47,072 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-31 18:44:47,072 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:44:47,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144925193] [2022-01-31 18:44:47,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [144925193] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:44:47,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:44:47,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2022-01-31 18:44:47,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349737727] [2022-01-31 18:44:47,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:44:47,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-01-31 18:44:47,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:44:47,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-01-31 18:44:47,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=3509, Unknown=0, NotChecked=0, Total=3660 [2022-01-31 18:44:47,074 INFO L87 Difference]: Start difference. First operand 2287 states and 3529 transitions. Second operand has 61 states, 59 states have (on average 1.4745762711864407) internal successors, (87), 57 states have internal predecessors, (87), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:44:53,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:44:53,814 INFO L93 Difference]: Finished difference Result 2339 states and 3655 transitions. [2022-01-31 18:44:53,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-31 18:44:53,815 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 59 states have (on average 1.4745762711864407) internal successors, (87), 57 states have internal predecessors, (87), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:44:53,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:44:53,830 INFO L225 Difference]: With dead ends: 2339 [2022-01-31 18:44:53,831 INFO L226 Difference]: Without dead ends: 2335 [2022-01-31 18:44:53,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2873 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=547, Invalid=13259, Unknown=0, NotChecked=0, Total=13806 [2022-01-31 18:44:53,852 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 98 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 5372 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 5436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 5372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:44:53,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 235 Invalid, 5436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 5372 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-31 18:44:53,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2335 states. [2022-01-31 18:44:55,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2335 to 2301. [2022-01-31 18:44:55,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2301 states, 2070 states have (on average 1.133816425120773) internal successors, (2347), 2156 states have internal predecessors, (2347), 137 states have call successors, (137), 17 states have call predecessors, (137), 93 states have return successors, (1128), 127 states have call predecessors, (1128), 136 states have call successors, (1128) [2022-01-31 18:44:55,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2301 states to 2301 states and 3612 transitions. [2022-01-31 18:44:55,243 INFO L78 Accepts]: Start accepts. Automaton has 2301 states and 3612 transitions. Word has length 110 [2022-01-31 18:44:55,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:44:55,244 INFO L470 AbstractCegarLoop]: Abstraction has 2301 states and 3612 transitions. [2022-01-31 18:44:55,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 59 states have (on average 1.4745762711864407) internal successors, (87), 57 states have internal predecessors, (87), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:44:55,244 INFO L276 IsEmpty]: Start isEmpty. Operand 2301 states and 3612 transitions. [2022-01-31 18:44:55,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:44:55,263 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:44:55,263 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 10, 5, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:44:55,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2022-01-31 18:44:55,263 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:44:55,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:44:55,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1740683803, now seen corresponding path program 116 times [2022-01-31 18:44:55,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:44:55,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563593086] [2022-01-31 18:44:55,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:44:55,265 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:44:55,265 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:44:55,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:44:55,268 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:44:55,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:55,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:44:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:55,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:44:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:56,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:44:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:56,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:44:56,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:57,134 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-31 18:44:57,134 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:44:57,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563593086] [2022-01-31 18:44:57,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1563593086] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:44:57,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:44:57,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2022-01-31 18:44:57,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930189952] [2022-01-31 18:44:57,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:44:57,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-01-31 18:44:57,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:44:57,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-01-31 18:44:57,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=2823, Unknown=0, NotChecked=0, Total=2970 [2022-01-31 18:44:57,136 INFO L87 Difference]: Start difference. First operand 2301 states and 3612 transitions. Second operand has 55 states, 53 states have (on average 1.5471698113207548) internal successors, (82), 51 states have internal predecessors, (82), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:45:02,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:45:02,276 INFO L93 Difference]: Finished difference Result 2343 states and 3658 transitions. [2022-01-31 18:45:02,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-31 18:45:02,276 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 53 states have (on average 1.5471698113207548) internal successors, (82), 51 states have internal predecessors, (82), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 110 [2022-01-31 18:45:02,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:45:02,288 INFO L225 Difference]: With dead ends: 2343 [2022-01-31 18:45:02,288 INFO L226 Difference]: Without dead ends: 2339 [2022-01-31 18:45:02,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2761 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=608, Invalid=11824, Unknown=0, NotChecked=0, Total=12432 [2022-01-31 18:45:02,309 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 136 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 4235 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 4312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 4235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-31 18:45:02,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 198 Invalid, 4312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 4235 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-31 18:45:02,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2339 states. [2022-01-31 18:45:03,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2339 to 2301. [2022-01-31 18:45:03,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2301 states, 2070 states have (on average 1.133816425120773) internal successors, (2347), 2156 states have internal predecessors, (2347), 137 states have call successors, (137), 17 states have call predecessors, (137), 93 states have return successors, (1124), 127 states have call predecessors, (1124), 136 states have call successors, (1124) [2022-01-31 18:45:03,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2301 states to 2301 states and 3608 transitions. [2022-01-31 18:45:03,686 INFO L78 Accepts]: Start accepts. Automaton has 2301 states and 3608 transitions. Word has length 110 [2022-01-31 18:45:03,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:45:03,686 INFO L470 AbstractCegarLoop]: Abstraction has 2301 states and 3608 transitions. [2022-01-31 18:45:03,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 53 states have (on average 1.5471698113207548) internal successors, (82), 51 states have internal predecessors, (82), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:45:03,687 INFO L276 IsEmpty]: Start isEmpty. Operand 2301 states and 3608 transitions. [2022-01-31 18:45:03,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:45:03,705 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:45:03,705 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 11, 5, 5, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:45:03,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2022-01-31 18:45:03,705 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:45:03,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:45:03,706 INFO L85 PathProgramCache]: Analyzing trace with hash -2133710813, now seen corresponding path program 117 times [2022-01-31 18:45:03,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:45:03,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652124807] [2022-01-31 18:45:03,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:45:03,707 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:45:03,707 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:45:03,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:45:03,709 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:45:03,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:45:04,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:45:04,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:45:04,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:45:04,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:45:05,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:45:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:45:06,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:45:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:45:06,994 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-31 18:45:06,994 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:45:06,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652124807] [2022-01-31 18:45:06,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [652124807] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:45:06,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:45:06,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2022-01-31 18:45:06,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085924201] [2022-01-31 18:45:06,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:45:06,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-01-31 18:45:06,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:45:06,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-01-31 18:45:06,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=4145, Unknown=0, NotChecked=0, Total=4290 [2022-01-31 18:45:06,996 INFO L87 Difference]: Start difference. First operand 2301 states and 3608 transitions. Second operand has 66 states, 64 states have (on average 1.484375) internal successors, (95), 62 states have internal predecessors, (95), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)