/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/array-industry-pattern/array_shadowinit.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 18:23:03,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 18:23:03,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 18:23:03,206 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 18:23:03,216 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 18:23:03,217 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 18:23:03,217 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 18:23:03,218 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 18:23:03,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 18:23:03,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 18:23:03,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 18:23:03,230 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 18:23:03,231 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 18:23:03,235 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 18:23:03,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 18:23:03,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 18:23:03,237 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 18:23:03,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 18:23:03,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 18:23:03,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 18:23:03,250 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 18:23:03,258 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 18:23:03,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 18:23:03,260 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 18:23:03,260 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 18:23:03,260 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 18:23:03,260 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 18:23:03,260 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 18:23:03,260 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 18:23:03,260 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 18:23:03,260 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 18:23:03,261 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 18:23:03,261 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 18:23:03,261 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 18:23:03,261 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 18:23:03,261 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 18:23:03,262 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 18:23:03,262 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 18:23:03,262 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 18:23:03,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 18:23:03,262 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 18:23:03,262 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 18:23:03,262 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 18:23:03,262 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 18:23:03,262 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 18:23:03,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 18:23:03,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 18:23:03,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 18:23:03,458 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 18:23:03,459 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 18:23:03,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_shadowinit.i [2022-01-31 18:23:03,503 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/405cbc3db/99c7b970c4eb4e34b49455dcf6d3cea2/FLAG81c9a9acf [2022-01-31 18:23:03,862 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 18:23:03,863 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-industry-pattern/array_shadowinit.i [2022-01-31 18:23:03,870 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/405cbc3db/99c7b970c4eb4e34b49455dcf6d3cea2/FLAG81c9a9acf [2022-01-31 18:23:03,881 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/405cbc3db/99c7b970c4eb4e34b49455dcf6d3cea2 [2022-01-31 18:23:03,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 18:23:03,883 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 18:23:03,884 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 18:23:03,884 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 18:23:03,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 18:23:03,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 06:23:03" (1/1) ... [2022-01-31 18:23:03,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d5d9cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:23:03, skipping insertion in model container [2022-01-31 18:23:03,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 06:23:03" (1/1) ... [2022-01-31 18:23:03,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 18:23:03,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 18:23:03,990 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-industry-pattern/array_shadowinit.i[809,822] [2022-01-31 18:23:03,997 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 18:23:04,003 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 18:23:04,020 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-industry-pattern/array_shadowinit.i[809,822] [2022-01-31 18:23:04,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 18:23:04,034 INFO L208 MainTranslator]: Completed translation [2022-01-31 18:23:04,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:23:04 WrapperNode [2022-01-31 18:23:04,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 18:23:04,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 18:23:04,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 18:23:04,035 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 18:23:04,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:23:04" (1/1) ... [2022-01-31 18:23:04,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:23:04" (1/1) ... [2022-01-31 18:23:04,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:23:04" (1/1) ... [2022-01-31 18:23:04,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:23:04" (1/1) ... [2022-01-31 18:23:04,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:23:04" (1/1) ... [2022-01-31 18:23:04,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:23:04" (1/1) ... [2022-01-31 18:23:04,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:23:04" (1/1) ... [2022-01-31 18:23:04,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 18:23:04,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 18:23:04,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 18:23:04,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 18:23:04,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:23:04" (1/1) ... [2022-01-31 18:23:04,084 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 18:23:04,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 18:23:04,101 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 18:23:04,105 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 18:23:04,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 18:23:04,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 18:23:04,123 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 18:23:04,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 18:23:04,123 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 18:23:04,123 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 18:23:04,123 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 18:23:04,123 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-01-31 18:23:04,123 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-01-31 18:23:04,123 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 18:23:04,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 18:23:04,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 18:23:04,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 18:23:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 18:23:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 18:23:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 18:23:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 18:23:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 18:23:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 18:23:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 18:23:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 18:23:04,183 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 18:23:04,184 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 18:23:04,274 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 18:23:04,278 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 18:23:04,278 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-31 18:23:04,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 06:23:04 BoogieIcfgContainer [2022-01-31 18:23:04,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 18:23:04,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 18:23:04,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 18:23:04,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 18:23:04,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 06:23:03" (1/3) ... [2022-01-31 18:23:04,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a0cd036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 06:23:04, skipping insertion in model container [2022-01-31 18:23:04,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:23:04" (2/3) ... [2022-01-31 18:23:04,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a0cd036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 06:23:04, skipping insertion in model container [2022-01-31 18:23:04,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 06:23:04" (3/3) ... [2022-01-31 18:23:04,284 INFO L111 eAbstractionObserver]: Analyzing ICFG array_shadowinit.i [2022-01-31 18:23:04,287 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 18:23:04,288 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 18:23:04,314 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 18:23:04,318 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 18:23:04,319 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 18:23:04,327 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 18:23:04,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-31 18:23:04,333 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:04,333 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:04,333 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:04,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:04,338 INFO L85 PathProgramCache]: Analyzing trace with hash -435628017, now seen corresponding path program 1 times [2022-01-31 18:23:04,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:04,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809903338] [2022-01-31 18:23:04,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:04,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:04,408 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:04,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:04,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:04,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:04,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:04,564 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:04,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809903338] [2022-01-31 18:23:04,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [809903338] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:04,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:04,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 18:23:04,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989269358] [2022-01-31 18:23:04,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:04,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 18:23:04,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:04,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 18:23:04,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 18:23:04,595 INFO L87 Difference]: Start difference. First operand has 24 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:23:04,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:04,665 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2022-01-31 18:23:04,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 18:23:04,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-01-31 18:23:04,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:04,684 INFO L225 Difference]: With dead ends: 41 [2022-01-31 18:23:04,684 INFO L226 Difference]: Without dead ends: 19 [2022-01-31 18:23:04,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 18:23:04,692 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 5 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:04,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 39 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 18:23:04,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-01-31 18:23:04,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-01-31 18:23:04,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 18:23:04,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-01-31 18:23:04,725 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2022-01-31 18:23:04,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:04,725 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-01-31 18:23:04,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:23:04,726 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-01-31 18:23:04,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-31 18:23:04,727 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:04,727 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:04,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 18:23:04,728 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:04,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:04,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1552803104, now seen corresponding path program 1 times [2022-01-31 18:23:04,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:04,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164484641] [2022-01-31 18:23:04,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:04,753 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:04,753 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:04,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:04,755 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:04,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:04,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:04,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:04,933 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:04,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1164484641] [2022-01-31 18:23:04,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1164484641] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:04,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:04,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-31 18:23:04,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549312839] [2022-01-31 18:23:04,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:04,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 18:23:04,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:04,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 18:23:04,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-31 18:23:04,937 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:23:05,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:05,060 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2022-01-31 18:23:05,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-31 18:23:05,061 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-01-31 18:23:05,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:05,062 INFO L225 Difference]: With dead ends: 28 [2022-01-31 18:23:05,062 INFO L226 Difference]: Without dead ends: 26 [2022-01-31 18:23:05,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-01-31 18:23:05,066 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 18 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:05,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 55 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:23:05,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-01-31 18:23:05,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-01-31 18:23:05,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 18:23:05,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2022-01-31 18:23:05,079 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 15 [2022-01-31 18:23:05,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:05,080 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2022-01-31 18:23:05,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:23:05,080 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2022-01-31 18:23:05,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-31 18:23:05,081 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:05,082 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:05,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 18:23:05,083 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:05,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:05,083 INFO L85 PathProgramCache]: Analyzing trace with hash 127400626, now seen corresponding path program 1 times [2022-01-31 18:23:05,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:05,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597721833] [2022-01-31 18:23:05,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:05,085 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:05,085 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:05,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:05,086 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:05,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:05,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 18:23:05,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:05,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:05,162 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:05,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597721833] [2022-01-31 18:23:05,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1597721833] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:05,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:05,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 18:23:05,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382190737] [2022-01-31 18:23:05,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:05,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 18:23:05,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:05,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 18:23:05,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-31 18:23:05,164 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 18:23:05,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:05,252 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2022-01-31 18:23:05,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-31 18:23:05,252 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-01-31 18:23:05,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:05,254 INFO L225 Difference]: With dead ends: 48 [2022-01-31 18:23:05,254 INFO L226 Difference]: Without dead ends: 30 [2022-01-31 18:23:05,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-31 18:23:05,262 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 22 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:05,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 31 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:23:05,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-01-31 18:23:05,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2022-01-31 18:23:05,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 18:23:05,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2022-01-31 18:23:05,275 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 22 [2022-01-31 18:23:05,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:05,275 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2022-01-31 18:23:05,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 18:23:05,275 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2022-01-31 18:23:05,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-31 18:23:05,276 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:05,276 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:05,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 18:23:05,277 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:05,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:05,277 INFO L85 PathProgramCache]: Analyzing trace with hash 2068539075, now seen corresponding path program 2 times [2022-01-31 18:23:05,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:05,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218323896] [2022-01-31 18:23:05,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:05,280 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:05,280 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:05,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:05,281 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:05,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:05,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 18:23:05,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:05,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:05,447 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:05,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1218323896] [2022-01-31 18:23:05,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1218323896] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:05,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:05,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-31 18:23:05,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805822325] [2022-01-31 18:23:05,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:05,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 18:23:05,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:05,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 18:23:05,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-01-31 18:23:05,449 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 11 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 18:23:05,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:05,578 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2022-01-31 18:23:05,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-31 18:23:05,579 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2022-01-31 18:23:05,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:05,579 INFO L225 Difference]: With dead ends: 36 [2022-01-31 18:23:05,580 INFO L226 Difference]: Without dead ends: 34 [2022-01-31 18:23:05,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-01-31 18:23:05,580 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 14 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:05,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 76 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:23:05,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-01-31 18:23:05,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-01-31 18:23:05,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 24 states have internal predecessors, (25), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:23:05,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2022-01-31 18:23:05,586 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 23 [2022-01-31 18:23:05,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:05,586 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2022-01-31 18:23:05,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 18:23:05,586 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2022-01-31 18:23:05,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-31 18:23:05,587 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:05,587 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:05,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-31 18:23:05,587 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:05,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:05,587 INFO L85 PathProgramCache]: Analyzing trace with hash -432608337, now seen corresponding path program 3 times [2022-01-31 18:23:05,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:05,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410663338] [2022-01-31 18:23:05,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:05,589 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:05,589 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:05,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:05,590 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:05,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:05,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:05,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 18:23:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:05,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 18:23:05,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:05,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:05,667 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:05,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [410663338] [2022-01-31 18:23:05,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [410663338] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:05,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:05,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-31 18:23:05,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095358851] [2022-01-31 18:23:05,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:05,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 18:23:05,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:05,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 18:23:05,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-01-31 18:23:05,668 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 18:23:05,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:05,783 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2022-01-31 18:23:05,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-31 18:23:05,783 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2022-01-31 18:23:05,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:05,784 INFO L225 Difference]: With dead ends: 63 [2022-01-31 18:23:05,784 INFO L226 Difference]: Without dead ends: 38 [2022-01-31 18:23:05,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-01-31 18:23:05,785 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 25 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:05,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 43 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:23:05,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-01-31 18:23:05,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2022-01-31 18:23:05,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:23:05,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2022-01-31 18:23:05,790 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 30 [2022-01-31 18:23:05,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:05,790 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2022-01-31 18:23:05,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 18:23:05,791 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2022-01-31 18:23:05,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-31 18:23:05,791 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:05,791 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:05,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-31 18:23:05,791 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:05,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:05,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1370900800, now seen corresponding path program 4 times [2022-01-31 18:23:05,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:05,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981402877] [2022-01-31 18:23:05,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:05,793 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:05,793 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:05,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:05,794 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:05,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:05,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:05,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:05,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-01-31 18:23:05,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:05,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 18:23:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:05,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:05,960 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:05,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981402877] [2022-01-31 18:23:05,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [981402877] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:05,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:05,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 18:23:05,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929225326] [2022-01-31 18:23:05,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:05,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 18:23:05,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:05,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 18:23:05,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-01-31 18:23:05,963 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 18:23:06,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:06,123 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2022-01-31 18:23:06,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-31 18:23:06,123 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 31 [2022-01-31 18:23:06,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:06,125 INFO L225 Difference]: With dead ends: 44 [2022-01-31 18:23:06,125 INFO L226 Difference]: Without dead ends: 42 [2022-01-31 18:23:06,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-01-31 18:23:06,127 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 16 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:06,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 84 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:23:06,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-01-31 18:23:06,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2022-01-31 18:23:06,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 30 states have internal predecessors, (31), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 18:23:06,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2022-01-31 18:23:06,141 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 31 [2022-01-31 18:23:06,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:06,142 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2022-01-31 18:23:06,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 18:23:06,143 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2022-01-31 18:23:06,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-31 18:23:06,145 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:06,145 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:06,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-31 18:23:06,146 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:06,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:06,146 INFO L85 PathProgramCache]: Analyzing trace with hash 534451474, now seen corresponding path program 5 times [2022-01-31 18:23:06,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:06,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364624287] [2022-01-31 18:23:06,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:06,148 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:06,148 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:06,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:06,149 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:06,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:06,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:06,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-01-31 18:23:06,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:06,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 18:23:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:06,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:23:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:06,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:06,253 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:06,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364624287] [2022-01-31 18:23:06,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1364624287] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:06,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:06,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-31 18:23:06,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013350586] [2022-01-31 18:23:06,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:06,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 18:23:06,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:06,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 18:23:06,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-01-31 18:23:06,254 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:23:06,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:06,379 INFO L93 Difference]: Finished difference Result 78 states and 81 transitions. [2022-01-31 18:23:06,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-31 18:23:06,380 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 38 [2022-01-31 18:23:06,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:06,381 INFO L225 Difference]: With dead ends: 78 [2022-01-31 18:23:06,382 INFO L226 Difference]: Without dead ends: 46 [2022-01-31 18:23:06,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-01-31 18:23:06,382 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 26 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:06,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 63 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:23:06,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-01-31 18:23:06,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2022-01-31 18:23:06,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 31 states have internal predecessors, (32), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 18:23:06,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2022-01-31 18:23:06,391 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 38 [2022-01-31 18:23:06,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:06,391 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2022-01-31 18:23:06,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:23:06,391 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2022-01-31 18:23:06,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-31 18:23:06,391 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:06,392 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:06,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-31 18:23:06,392 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:06,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:06,392 INFO L85 PathProgramCache]: Analyzing trace with hash -763478237, now seen corresponding path program 6 times [2022-01-31 18:23:06,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:06,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182663464] [2022-01-31 18:23:06,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:06,393 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:06,393 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:06,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:06,394 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:06,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:06,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:06,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-31 18:23:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:06,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-31 18:23:06,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:06,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-01-31 18:23:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:06,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:06,550 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:06,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182663464] [2022-01-31 18:23:06,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [182663464] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:06,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:06,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-31 18:23:06,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890154756] [2022-01-31 18:23:06,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:06,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 18:23:06,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:06,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 18:23:06,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2022-01-31 18:23:06,551 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 13 states have internal predecessors, (23), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:23:06,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:06,907 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2022-01-31 18:23:06,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-31 18:23:06,908 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 13 states have internal predecessors, (23), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 39 [2022-01-31 18:23:06,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:06,908 INFO L225 Difference]: With dead ends: 52 [2022-01-31 18:23:06,908 INFO L226 Difference]: Without dead ends: 50 [2022-01-31 18:23:06,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2022-01-31 18:23:06,909 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 17 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:06,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 114 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:23:06,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-01-31 18:23:06,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2022-01-31 18:23:06,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 36 states have internal predecessors, (37), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 18:23:06,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2022-01-31 18:23:06,916 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 39 [2022-01-31 18:23:06,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:06,916 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2022-01-31 18:23:06,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 13 states have internal predecessors, (23), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:23:06,916 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2022-01-31 18:23:06,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-31 18:23:06,917 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:06,917 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:06,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-31 18:23:06,917 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:06,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:06,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1695672143, now seen corresponding path program 7 times [2022-01-31 18:23:06,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:06,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403488675] [2022-01-31 18:23:06,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:06,919 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:06,919 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:06,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:06,920 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:06,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:07,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:07,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:07,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-31 18:23:07,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:07,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-31 18:23:07,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:07,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-01-31 18:23:07,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:07,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 18:23:07,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:07,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:07,017 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:07,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403488675] [2022-01-31 18:23:07,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [403488675] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:07,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:07,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-31 18:23:07,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772145869] [2022-01-31 18:23:07,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:07,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-31 18:23:07,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:07,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-31 18:23:07,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-01-31 18:23:07,018 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 18:23:07,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:07,206 INFO L93 Difference]: Finished difference Result 93 states and 96 transitions. [2022-01-31 18:23:07,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-31 18:23:07,207 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 46 [2022-01-31 18:23:07,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:07,208 INFO L225 Difference]: With dead ends: 93 [2022-01-31 18:23:07,208 INFO L226 Difference]: Without dead ends: 54 [2022-01-31 18:23:07,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-01-31 18:23:07,210 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 43 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:07,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 40 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:23:07,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-01-31 18:23:07,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2022-01-31 18:23:07,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 37 states have internal predecessors, (38), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 18:23:07,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2022-01-31 18:23:07,221 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 46 [2022-01-31 18:23:07,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:07,222 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2022-01-31 18:23:07,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 18:23:07,222 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2022-01-31 18:23:07,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-31 18:23:07,228 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:07,228 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:07,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-31 18:23:07,228 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:07,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:07,228 INFO L85 PathProgramCache]: Analyzing trace with hash -680103840, now seen corresponding path program 8 times [2022-01-31 18:23:07,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:07,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964651309] [2022-01-31 18:23:07,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:07,230 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:07,230 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:07,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:07,231 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:07,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:07,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:07,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 18:23:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:07,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-31 18:23:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:07,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 18:23:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:07,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-31 18:23:07,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:07,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:07,501 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:07,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964651309] [2022-01-31 18:23:07,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1964651309] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:07,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:07,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-31 18:23:07,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769895680] [2022-01-31 18:23:07,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:07,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-31 18:23:07,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:07,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-31 18:23:07,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-01-31 18:23:07,503 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand has 17 states, 16 states have (on average 1.625) internal successors, (26), 15 states have internal predecessors, (26), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 18:23:07,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:07,802 INFO L93 Difference]: Finished difference Result 60 states and 61 transitions. [2022-01-31 18:23:07,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-31 18:23:07,802 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.625) internal successors, (26), 15 states have internal predecessors, (26), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 47 [2022-01-31 18:23:07,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:07,804 INFO L225 Difference]: With dead ends: 60 [2022-01-31 18:23:07,804 INFO L226 Difference]: Without dead ends: 58 [2022-01-31 18:23:07,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-01-31 18:23:07,804 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 18 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:07,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 138 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:23:07,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-01-31 18:23:07,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2022-01-31 18:23:07,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 41 states have (on average 1.048780487804878) internal successors, (43), 42 states have internal predecessors, (43), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 18:23:07,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2022-01-31 18:23:07,816 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 47 [2022-01-31 18:23:07,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:07,817 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2022-01-31 18:23:07,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.625) internal successors, (26), 15 states have internal predecessors, (26), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 18:23:07,817 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2022-01-31 18:23:07,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-31 18:23:07,818 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:07,818 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:07,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-31 18:23:07,818 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:07,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:07,819 INFO L85 PathProgramCache]: Analyzing trace with hash 861423474, now seen corresponding path program 9 times [2022-01-31 18:23:07,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:07,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901436587] [2022-01-31 18:23:07,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:07,821 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:07,821 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:07,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:07,822 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:07,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:07,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:07,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:07,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 18:23:07,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:07,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-31 18:23:07,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:07,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 18:23:07,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:07,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-31 18:23:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:07,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 18:23:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:07,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:07,935 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:07,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901436587] [2022-01-31 18:23:07,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [901436587] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:07,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:07,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-31 18:23:07,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807948090] [2022-01-31 18:23:07,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:07,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-31 18:23:07,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:07,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-31 18:23:07,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-01-31 18:23:07,936 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 18:23:08,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:08,095 INFO L93 Difference]: Finished difference Result 108 states and 111 transitions. [2022-01-31 18:23:08,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-31 18:23:08,096 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 54 [2022-01-31 18:23:08,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:08,096 INFO L225 Difference]: With dead ends: 108 [2022-01-31 18:23:08,096 INFO L226 Difference]: Without dead ends: 62 [2022-01-31 18:23:08,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2022-01-31 18:23:08,097 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 40 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:08,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 51 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:23:08,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-01-31 18:23:08,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2022-01-31 18:23:08,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 43 states have internal predecessors, (44), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 18:23:08,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2022-01-31 18:23:08,104 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 54 [2022-01-31 18:23:08,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:08,105 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2022-01-31 18:23:08,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 18:23:08,105 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2022-01-31 18:23:08,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-31 18:23:08,105 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:08,105 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:08,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-31 18:23:08,105 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:08,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:08,106 INFO L85 PathProgramCache]: Analyzing trace with hash 2041524099, now seen corresponding path program 10 times [2022-01-31 18:23:08,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:08,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261094994] [2022-01-31 18:23:08,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:08,107 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:08,107 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:08,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:08,107 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:08,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:08,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:08,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:08,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 18:23:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:08,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 18:23:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:08,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 18:23:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:08,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-31 18:23:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:08,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:23:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:08,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:08,316 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:08,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261094994] [2022-01-31 18:23:08,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1261094994] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:08,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:08,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-31 18:23:08,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292515003] [2022-01-31 18:23:08,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:08,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-31 18:23:08,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:08,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-31 18:23:08,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2022-01-31 18:23:08,317 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 17 states have internal predecessors, (29), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 18:23:08,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:08,695 INFO L93 Difference]: Finished difference Result 68 states and 69 transitions. [2022-01-31 18:23:08,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-31 18:23:08,695 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 17 states have internal predecessors, (29), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 55 [2022-01-31 18:23:08,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:08,696 INFO L225 Difference]: With dead ends: 68 [2022-01-31 18:23:08,696 INFO L226 Difference]: Without dead ends: 66 [2022-01-31 18:23:08,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2022-01-31 18:23:08,697 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 19 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:08,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 168 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:23:08,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-01-31 18:23:08,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2022-01-31 18:23:08,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 48 states have internal predecessors, (49), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-31 18:23:08,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2022-01-31 18:23:08,705 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 55 [2022-01-31 18:23:08,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:08,705 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2022-01-31 18:23:08,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 17 states have internal predecessors, (29), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 18:23:08,706 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2022-01-31 18:23:08,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-31 18:23:08,706 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:08,706 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:08,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-31 18:23:08,706 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:08,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:08,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1449380591, now seen corresponding path program 11 times [2022-01-31 18:23:08,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:08,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508472942] [2022-01-31 18:23:08,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:08,708 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:08,708 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:08,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:08,709 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:08,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:08,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:08,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 18:23:08,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:08,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 18:23:08,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:08,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 18:23:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:08,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-31 18:23:08,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:08,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:23:08,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:08,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 18:23:08,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:08,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:08,861 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:08,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508472942] [2022-01-31 18:23:08,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1508472942] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:08,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:08,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-31 18:23:08,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170495337] [2022-01-31 18:23:08,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:08,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-31 18:23:08,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:08,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-31 18:23:08,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-01-31 18:23:08,862 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 18:23:09,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:09,076 INFO L93 Difference]: Finished difference Result 123 states and 126 transitions. [2022-01-31 18:23:09,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-31 18:23:09,077 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 62 [2022-01-31 18:23:09,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:09,077 INFO L225 Difference]: With dead ends: 123 [2022-01-31 18:23:09,077 INFO L226 Difference]: Without dead ends: 70 [2022-01-31 18:23:09,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2022-01-31 18:23:09,078 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 49 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:09,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 57 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:23:09,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-01-31 18:23:09,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2022-01-31 18:23:09,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 49 states have internal predecessors, (50), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-31 18:23:09,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2022-01-31 18:23:09,104 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 62 [2022-01-31 18:23:09,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:09,104 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2022-01-31 18:23:09,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 18:23:09,105 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2022-01-31 18:23:09,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-31 18:23:09,106 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:09,106 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:09,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-31 18:23:09,106 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:09,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:09,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1008856576, now seen corresponding path program 12 times [2022-01-31 18:23:09,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:09,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138207183] [2022-01-31 18:23:09,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:09,107 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:09,107 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:09,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:09,108 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:09,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:09,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:09,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:09,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:23:09,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:09,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-31 18:23:09,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:09,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 18:23:09,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:09,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-01-31 18:23:09,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:09,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 18:23:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:09,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-01-31 18:23:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:09,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:09,371 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:09,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138207183] [2022-01-31 18:23:09,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [138207183] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:09,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:09,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-31 18:23:09,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774971253] [2022-01-31 18:23:09,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:09,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-31 18:23:09,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:09,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-31 18:23:09,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2022-01-31 18:23:09,372 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand has 21 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 18:23:09,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:09,761 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2022-01-31 18:23:09,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-31 18:23:09,761 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 63 [2022-01-31 18:23:09,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:09,762 INFO L225 Difference]: With dead ends: 76 [2022-01-31 18:23:09,762 INFO L226 Difference]: Without dead ends: 74 [2022-01-31 18:23:09,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2022-01-31 18:23:09,769 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 20 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:09,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 192 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:23:09,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-01-31 18:23:09,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2022-01-31 18:23:09,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 54 states have internal predecessors, (55), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 18:23:09,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2022-01-31 18:23:09,777 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 63 [2022-01-31 18:23:09,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:09,777 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2022-01-31 18:23:09,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 18:23:09,777 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2022-01-31 18:23:09,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-31 18:23:09,778 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:09,778 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:09,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-31 18:23:09,778 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:09,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:09,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1594200530, now seen corresponding path program 13 times [2022-01-31 18:23:09,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:09,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545512094] [2022-01-31 18:23:09,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:09,779 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:09,779 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:09,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:09,780 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:09,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:09,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:09,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:09,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:23:09,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:09,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-31 18:23:09,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:09,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 18:23:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:09,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-01-31 18:23:09,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:09,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 18:23:09,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:09,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-01-31 18:23:09,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:09,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 18:23:09,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:09,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:09,927 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:09,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545512094] [2022-01-31 18:23:09,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1545512094] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:09,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:09,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-31 18:23:09,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774017643] [2022-01-31 18:23:09,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:09,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-31 18:23:09,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:09,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-31 18:23:09,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2022-01-31 18:23:09,928 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand has 20 states, 20 states have (on average 1.7) internal successors, (34), 19 states have internal predecessors, (34), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-31 18:23:10,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:10,165 INFO L93 Difference]: Finished difference Result 138 states and 141 transitions. [2022-01-31 18:23:10,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-31 18:23:10,166 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 19 states have internal predecessors, (34), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 70 [2022-01-31 18:23:10,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:10,167 INFO L225 Difference]: With dead ends: 138 [2022-01-31 18:23:10,167 INFO L226 Difference]: Without dead ends: 78 [2022-01-31 18:23:10,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=176, Invalid=580, Unknown=0, NotChecked=0, Total=756 [2022-01-31 18:23:10,168 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 48 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:10,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 87 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:23:10,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-01-31 18:23:10,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2022-01-31 18:23:10,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 54 states have (on average 1.037037037037037) internal successors, (56), 55 states have internal predecessors, (56), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 18:23:10,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2022-01-31 18:23:10,177 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 70 [2022-01-31 18:23:10,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:10,177 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2022-01-31 18:23:10,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 19 states have internal predecessors, (34), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-31 18:23:10,177 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2022-01-31 18:23:10,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-31 18:23:10,178 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:10,178 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:10,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-31 18:23:10,178 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:10,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:10,178 INFO L85 PathProgramCache]: Analyzing trace with hash -2049689629, now seen corresponding path program 14 times [2022-01-31 18:23:10,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:10,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785940808] [2022-01-31 18:23:10,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:10,179 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:10,179 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:10,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:10,180 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:10,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:10,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:10,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-31 18:23:10,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:10,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-31 18:23:10,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:10,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-01-31 18:23:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:10,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 18:23:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:10,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-31 18:23:10,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:10,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 18:23:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:10,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 18:23:10,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:10,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:10,485 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:10,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785940808] [2022-01-31 18:23:10,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [785940808] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:10,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:10,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-01-31 18:23:10,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129130887] [2022-01-31 18:23:10,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:10,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-31 18:23:10,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:10,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-31 18:23:10,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=462, Unknown=0, NotChecked=0, Total=506 [2022-01-31 18:23:10,487 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 21 states have internal predecessors, (35), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-31 18:23:11,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:11,007 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2022-01-31 18:23:11,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-31 18:23:11,007 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 21 states have internal predecessors, (35), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 71 [2022-01-31 18:23:11,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:11,008 INFO L225 Difference]: With dead ends: 84 [2022-01-31 18:23:11,008 INFO L226 Difference]: Without dead ends: 82 [2022-01-31 18:23:11,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=1029, Unknown=0, NotChecked=0, Total=1122 [2022-01-31 18:23:11,009 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 21 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:11,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 226 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 18:23:11,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-01-31 18:23:11,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2022-01-31 18:23:11,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 60 states have internal predecessors, (61), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-01-31 18:23:11,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2022-01-31 18:23:11,018 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 71 [2022-01-31 18:23:11,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:11,018 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2022-01-31 18:23:11,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 21 states have internal predecessors, (35), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-31 18:23:11,018 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2022-01-31 18:23:11,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-31 18:23:11,018 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:11,018 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:11,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-31 18:23:11,019 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:11,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:11,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1148622479, now seen corresponding path program 15 times [2022-01-31 18:23:11,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:11,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913529083] [2022-01-31 18:23:11,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:11,020 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:11,020 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:11,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:11,021 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:11,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:11,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:11,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:11,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-31 18:23:11,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:11,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-31 18:23:11,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:11,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-01-31 18:23:11,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:11,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 18:23:11,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:11,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-31 18:23:11,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:11,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 18:23:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:11,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 18:23:11,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:11,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 18:23:11,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:11,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:11,193 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:11,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913529083] [2022-01-31 18:23:11,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [913529083] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:11,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:11,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-31 18:23:11,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993954867] [2022-01-31 18:23:11,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:11,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-31 18:23:11,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:11,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-31 18:23:11,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2022-01-31 18:23:11,194 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 21 states have internal predecessors, (37), 10 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 18:23:11,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:11,458 INFO L93 Difference]: Finished difference Result 153 states and 156 transitions. [2022-01-31 18:23:11,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-31 18:23:11,458 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 21 states have internal predecessors, (37), 10 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 78 [2022-01-31 18:23:11,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:11,459 INFO L225 Difference]: With dead ends: 153 [2022-01-31 18:23:11,459 INFO L226 Difference]: Without dead ends: 86 [2022-01-31 18:23:11,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=215, Invalid=715, Unknown=0, NotChecked=0, Total=930 [2022-01-31 18:23:11,460 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 69 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:11,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 54 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:23:11,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-01-31 18:23:11,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 82. [2022-01-31 18:23:11,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 61 states have internal predecessors, (62), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-01-31 18:23:11,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 83 transitions. [2022-01-31 18:23:11,469 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 83 transitions. Word has length 78 [2022-01-31 18:23:11,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:11,469 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 83 transitions. [2022-01-31 18:23:11,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 21 states have internal predecessors, (37), 10 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 18:23:11,469 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 83 transitions. [2022-01-31 18:23:11,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-31 18:23:11,470 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:11,470 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:11,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-31 18:23:11,470 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:11,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:11,470 INFO L85 PathProgramCache]: Analyzing trace with hash -171271264, now seen corresponding path program 16 times [2022-01-31 18:23:11,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:11,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250386861] [2022-01-31 18:23:11,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:11,471 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:11,471 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:11,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:11,472 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:11,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:11,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 18:23:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:11,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-31 18:23:11,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:11,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 18:23:11,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:11,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 18:23:11,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:11,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 18:23:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:11,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 18:23:11,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:11,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 18:23:11,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:11,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-31 18:23:11,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:11,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:11,857 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:11,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250386861] [2022-01-31 18:23:11,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [250386861] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:11,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:11,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-01-31 18:23:11,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85511720] [2022-01-31 18:23:11,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:11,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-31 18:23:11,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:11,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-31 18:23:11,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=552, Unknown=0, NotChecked=0, Total=600 [2022-01-31 18:23:11,859 INFO L87 Difference]: Start difference. First operand 82 states and 83 transitions. Second operand has 25 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 23 states have internal predecessors, (38), 10 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 18:23:12,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:12,466 INFO L93 Difference]: Finished difference Result 92 states and 93 transitions. [2022-01-31 18:23:12,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-31 18:23:12,466 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 23 states have internal predecessors, (38), 10 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 79 [2022-01-31 18:23:12,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:12,467 INFO L225 Difference]: With dead ends: 92 [2022-01-31 18:23:12,467 INFO L226 Difference]: Without dead ends: 90 [2022-01-31 18:23:12,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=1231, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 18:23:12,468 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 22 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:12,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 258 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 18:23:12,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-01-31 18:23:12,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2022-01-31 18:23:12,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 65 states have (on average 1.0307692307692307) internal successors, (67), 66 states have internal predecessors, (67), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-31 18:23:12,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2022-01-31 18:23:12,478 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 79 [2022-01-31 18:23:12,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:12,478 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2022-01-31 18:23:12,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 23 states have internal predecessors, (38), 10 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 18:23:12,479 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2022-01-31 18:23:12,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-31 18:23:12,481 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:12,481 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:12,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-31 18:23:12,482 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:12,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:12,482 INFO L85 PathProgramCache]: Analyzing trace with hash -648481742, now seen corresponding path program 17 times [2022-01-31 18:23:12,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:12,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668884028] [2022-01-31 18:23:12,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:12,483 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:12,483 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:12,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:12,484 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:12,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:12,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:12,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:12,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 18:23:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:12,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-31 18:23:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:12,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 18:23:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:12,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 18:23:12,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:12,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 18:23:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:12,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 18:23:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:12,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 18:23:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:12,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-31 18:23:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:12,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 18:23:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:12,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:12,695 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:12,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668884028] [2022-01-31 18:23:12,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1668884028] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:12,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:12,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-01-31 18:23:12,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774784838] [2022-01-31 18:23:12,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:12,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-31 18:23:12,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:12,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-31 18:23:12,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2022-01-31 18:23:12,697 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 states have internal predecessors, (40), 11 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-01-31 18:23:13,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:13,045 INFO L93 Difference]: Finished difference Result 168 states and 171 transitions. [2022-01-31 18:23:13,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-31 18:23:13,046 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 states have internal predecessors, (40), 11 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 86 [2022-01-31 18:23:13,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:13,047 INFO L225 Difference]: With dead ends: 168 [2022-01-31 18:23:13,047 INFO L226 Difference]: Without dead ends: 94 [2022-01-31 18:23:13,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=258, Invalid=864, Unknown=0, NotChecked=0, Total=1122 [2022-01-31 18:23:13,048 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 80 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:13,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 57 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:23:13,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-01-31 18:23:13,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2022-01-31 18:23:13,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 67 states have internal predecessors, (68), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-31 18:23:13,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions. [2022-01-31 18:23:13,059 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 86 [2022-01-31 18:23:13,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:13,059 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 91 transitions. [2022-01-31 18:23:13,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 states have internal predecessors, (40), 11 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-01-31 18:23:13,059 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 91 transitions. [2022-01-31 18:23:13,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-31 18:23:13,059 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:13,059 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:13,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-31 18:23:13,060 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:13,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:13,060 INFO L85 PathProgramCache]: Analyzing trace with hash 627267651, now seen corresponding path program 18 times [2022-01-31 18:23:13,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:13,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642476083] [2022-01-31 18:23:13,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:13,061 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:13,061 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:13,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:13,062 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:13,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:13,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:13,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 18:23:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:13,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:23:13,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:13,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-31 18:23:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:13,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 18:23:13,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:13,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-31 18:23:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:13,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 18:23:13,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:13,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 18:23:13,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:13,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 18:23:13,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:13,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 18:23:13,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:13,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:13,438 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:13,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642476083] [2022-01-31 18:23:13,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [642476083] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:13,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:13,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-31 18:23:13,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831667506] [2022-01-31 18:23:13,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:13,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-31 18:23:13,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:13,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-31 18:23:13,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=650, Unknown=0, NotChecked=0, Total=702 [2022-01-31 18:23:13,440 INFO L87 Difference]: Start difference. First operand 90 states and 91 transitions. Second operand has 27 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 25 states have internal predecessors, (41), 11 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-01-31 18:23:14,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:14,094 INFO L93 Difference]: Finished difference Result 100 states and 101 transitions. [2022-01-31 18:23:14,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-31 18:23:14,095 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 25 states have internal predecessors, (41), 11 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 87 [2022-01-31 18:23:14,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:14,095 INFO L225 Difference]: With dead ends: 100 [2022-01-31 18:23:14,095 INFO L226 Difference]: Without dead ends: 98 [2022-01-31 18:23:14,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=1451, Unknown=0, NotChecked=0, Total=1560 [2022-01-31 18:23:14,096 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 23 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 1366 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:14,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 288 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1366 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 18:23:14,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-01-31 18:23:14,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2022-01-31 18:23:14,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 71 states have (on average 1.028169014084507) internal successors, (73), 72 states have internal predecessors, (73), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-31 18:23:14,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2022-01-31 18:23:14,108 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 87 [2022-01-31 18:23:14,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:14,108 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2022-01-31 18:23:14,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 25 states have internal predecessors, (41), 11 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-01-31 18:23:14,109 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2022-01-31 18:23:14,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-31 18:23:14,109 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:14,109 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:14,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-31 18:23:14,109 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:14,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:14,110 INFO L85 PathProgramCache]: Analyzing trace with hash -267105745, now seen corresponding path program 19 times [2022-01-31 18:23:14,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:14,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096511410] [2022-01-31 18:23:14,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:14,111 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:14,111 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:14,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:14,111 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:14,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:14,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:14,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:14,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 18:23:14,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:14,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:23:14,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:14,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-31 18:23:14,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:14,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 18:23:14,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:14,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-31 18:23:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:14,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 18:23:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:14,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 18:23:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:14,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 18:23:14,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:14,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 18:23:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:14,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 18:23:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:14,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:14,335 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:14,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096511410] [2022-01-31 18:23:14,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2096511410] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:14,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:14,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-31 18:23:14,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758030586] [2022-01-31 18:23:14,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:14,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-31 18:23:14,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:14,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-31 18:23:14,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2022-01-31 18:23:14,336 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 25 states have internal predecessors, (43), 12 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-31 18:23:14,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:14,674 INFO L93 Difference]: Finished difference Result 183 states and 186 transitions. [2022-01-31 18:23:14,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-31 18:23:14,674 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 25 states have internal predecessors, (43), 12 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 94 [2022-01-31 18:23:14,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:14,677 INFO L225 Difference]: With dead ends: 183 [2022-01-31 18:23:14,677 INFO L226 Difference]: Without dead ends: 102 [2022-01-31 18:23:14,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=305, Invalid=1027, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 18:23:14,679 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 81 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:14,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 75 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:23:14,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-01-31 18:23:14,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 98. [2022-01-31 18:23:14,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 73 states have internal predecessors, (74), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-31 18:23:14,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2022-01-31 18:23:14,692 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 94 [2022-01-31 18:23:14,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:14,692 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2022-01-31 18:23:14,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 25 states have internal predecessors, (43), 12 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-31 18:23:14,692 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2022-01-31 18:23:14,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-31 18:23:14,692 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:14,692 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:14,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-31 18:23:14,693 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:14,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:14,693 INFO L85 PathProgramCache]: Analyzing trace with hash 637930816, now seen corresponding path program 20 times [2022-01-31 18:23:14,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:14,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361586599] [2022-01-31 18:23:14,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:14,694 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:14,694 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:14,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:14,695 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:14,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:15,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:15,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:15,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-31 18:23:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:15,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-01-31 18:23:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:15,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 18:23:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:15,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-31 18:23:15,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:15,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-31 18:23:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:15,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-01-31 18:23:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:15,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 18:23:15,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:15,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 18:23:15,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:15,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 18:23:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:15,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 18:23:15,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:15,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:15,088 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:15,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361586599] [2022-01-31 18:23:15,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1361586599] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:15,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:15,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-01-31 18:23:15,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706555918] [2022-01-31 18:23:15,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:15,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-31 18:23:15,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:15,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-31 18:23:15,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=756, Unknown=0, NotChecked=0, Total=812 [2022-01-31 18:23:15,090 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand has 29 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 27 states have internal predecessors, (44), 12 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-31 18:23:15,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:15,849 INFO L93 Difference]: Finished difference Result 108 states and 109 transitions. [2022-01-31 18:23:15,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-31 18:23:15,851 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 27 states have internal predecessors, (44), 12 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 95 [2022-01-31 18:23:15,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:15,852 INFO L225 Difference]: With dead ends: 108 [2022-01-31 18:23:15,852 INFO L226 Difference]: Without dead ends: 106 [2022-01-31 18:23:15,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=1689, Unknown=0, NotChecked=0, Total=1806 [2022-01-31 18:23:15,853 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 24 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 1630 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 1669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:15,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 328 Invalid, 1669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1630 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 18:23:15,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-01-31 18:23:15,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2022-01-31 18:23:15,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 77 states have (on average 1.025974025974026) internal successors, (79), 78 states have internal predecessors, (79), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2022-01-31 18:23:15,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2022-01-31 18:23:15,865 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 95 [2022-01-31 18:23:15,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:15,865 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2022-01-31 18:23:15,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 27 states have internal predecessors, (44), 12 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-31 18:23:15,865 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2022-01-31 18:23:15,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-31 18:23:15,866 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:15,866 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:15,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-31 18:23:15,866 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:15,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:15,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1380478610, now seen corresponding path program 21 times [2022-01-31 18:23:15,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:15,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281155258] [2022-01-31 18:23:15,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:15,867 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:15,867 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:15,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:15,868 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:16,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:16,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:16,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-31 18:23:16,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:16,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-01-31 18:23:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:16,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 18:23:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:16,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-31 18:23:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:16,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-31 18:23:16,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:16,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-01-31 18:23:16,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:16,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 18:23:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:16,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 18:23:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:16,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 18:23:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:16,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 18:23:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:16,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 18:23:16,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:16,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:16,139 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:16,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281155258] [2022-01-31 18:23:16,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [281155258] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:16,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:16,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-31 18:23:16,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707072031] [2022-01-31 18:23:16,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:16,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-31 18:23:16,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:16,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-31 18:23:16,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=569, Unknown=0, NotChecked=0, Total=756 [2022-01-31 18:23:16,141 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 27 states have internal predecessors, (46), 13 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-31 18:23:16,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:16,510 INFO L93 Difference]: Finished difference Result 198 states and 201 transitions. [2022-01-31 18:23:16,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-31 18:23:16,511 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 27 states have internal predecessors, (46), 13 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 102 [2022-01-31 18:23:16,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:16,512 INFO L225 Difference]: With dead ends: 198 [2022-01-31 18:23:16,512 INFO L226 Difference]: Without dead ends: 110 [2022-01-31 18:23:16,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=356, Invalid=1204, Unknown=0, NotChecked=0, Total=1560 [2022-01-31 18:23:16,513 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 70 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:16,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 91 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:23:16,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-01-31 18:23:16,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 106. [2022-01-31 18:23:16,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 78 states have (on average 1.0256410256410255) internal successors, (80), 79 states have internal predecessors, (80), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2022-01-31 18:23:16,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2022-01-31 18:23:16,527 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 102 [2022-01-31 18:23:16,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:16,528 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2022-01-31 18:23:16,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 27 states have internal predecessors, (46), 13 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-31 18:23:16,531 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2022-01-31 18:23:16,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-31 18:23:16,531 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:16,531 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:16,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-31 18:23:16,532 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:16,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:16,532 INFO L85 PathProgramCache]: Analyzing trace with hash 5410979, now seen corresponding path program 22 times [2022-01-31 18:23:16,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:16,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917420764] [2022-01-31 18:23:16,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:16,533 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:16,533 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:16,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:16,534 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:16,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:17,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:17,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-31 18:23:17,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:17,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 18:23:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:17,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-31 18:23:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:17,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 18:23:17,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:17,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 18:23:17,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:17,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-01-31 18:23:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:17,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-31 18:23:17,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:17,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 18:23:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:17,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 18:23:17,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:17,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 18:23:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:17,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 18:23:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:17,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:17,036 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:17,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917420764] [2022-01-31 18:23:17,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [917420764] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:17,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:17,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-01-31 18:23:17,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516987913] [2022-01-31 18:23:17,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:17,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-31 18:23:17,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:17,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-31 18:23:17,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=870, Unknown=0, NotChecked=0, Total=930 [2022-01-31 18:23:17,039 INFO L87 Difference]: Start difference. First operand 106 states and 107 transitions. Second operand has 31 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 29 states have internal predecessors, (47), 13 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-31 18:23:17,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:17,865 INFO L93 Difference]: Finished difference Result 116 states and 117 transitions. [2022-01-31 18:23:17,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-31 18:23:17,866 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 29 states have internal predecessors, (47), 13 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 103 [2022-01-31 18:23:17,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:17,866 INFO L225 Difference]: With dead ends: 116 [2022-01-31 18:23:17,866 INFO L226 Difference]: Without dead ends: 114 [2022-01-31 18:23:17,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=125, Invalid=1945, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 18:23:17,867 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 25 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 1848 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 1890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:17,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 362 Invalid, 1890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1848 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 18:23:17,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-01-31 18:23:17,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2022-01-31 18:23:17,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 83 states have (on average 1.0240963855421688) internal successors, (85), 84 states have internal predecessors, (85), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-01-31 18:23:17,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2022-01-31 18:23:17,881 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 103 [2022-01-31 18:23:17,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:17,881 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2022-01-31 18:23:17,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 29 states have internal predecessors, (47), 13 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-31 18:23:17,881 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2022-01-31 18:23:17,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:23:17,882 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:17,882 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:17,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-31 18:23:17,882 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:17,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:17,882 INFO L85 PathProgramCache]: Analyzing trace with hash -259594801, now seen corresponding path program 23 times [2022-01-31 18:23:17,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:17,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13200353] [2022-01-31 18:23:17,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:17,883 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:17,883 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:17,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:17,884 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:18,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:18,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:18,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-31 18:23:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:18,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 18:23:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:18,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-31 18:23:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:18,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 18:23:18,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:18,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 18:23:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:18,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-01-31 18:23:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:18,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-31 18:23:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:18,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 18:23:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:18,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 18:23:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:18,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 18:23:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:18,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 18:23:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:18,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 18:23:18,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:18,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:18,167 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:18,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13200353] [2022-01-31 18:23:18,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [13200353] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:18,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:18,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-01-31 18:23:18,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551319933] [2022-01-31 18:23:18,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:18,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-31 18:23:18,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:18,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-31 18:23:18,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=655, Unknown=0, NotChecked=0, Total=870 [2022-01-31 18:23:18,169 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 29 states have internal predecessors, (49), 14 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-01-31 18:23:18,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:18,545 INFO L93 Difference]: Finished difference Result 213 states and 216 transitions. [2022-01-31 18:23:18,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-31 18:23:18,546 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 29 states have internal predecessors, (49), 14 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 110 [2022-01-31 18:23:18,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:18,547 INFO L225 Difference]: With dead ends: 213 [2022-01-31 18:23:18,547 INFO L226 Difference]: Without dead ends: 118 [2022-01-31 18:23:18,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=411, Invalid=1395, Unknown=0, NotChecked=0, Total=1806 [2022-01-31 18:23:18,548 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 99 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:18,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 81 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:23:18,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-01-31 18:23:18,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 114. [2022-01-31 18:23:18,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 84 states have (on average 1.0238095238095237) internal successors, (86), 85 states have internal predecessors, (86), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-01-31 18:23:18,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 115 transitions. [2022-01-31 18:23:18,566 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 115 transitions. Word has length 110 [2022-01-31 18:23:18,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:18,566 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 115 transitions. [2022-01-31 18:23:18,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 29 states have internal predecessors, (49), 14 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-01-31 18:23:18,567 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 115 transitions. [2022-01-31 18:23:18,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 18:23:18,568 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:18,568 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:18,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-31 18:23:18,568 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:18,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:18,568 INFO L85 PathProgramCache]: Analyzing trace with hash -472226080, now seen corresponding path program 24 times [2022-01-31 18:23:18,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:18,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163828273] [2022-01-31 18:23:18,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:18,569 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:18,569 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:18,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:18,570 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:19,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:19,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 18:23:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:19,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 18:23:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:19,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-31 18:23:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:19,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:23:19,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:19,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 18:23:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:19,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 18:23:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:19,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-31 18:23:19,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:19,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-31 18:23:19,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:19,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 18:23:19,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:19,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 18:23:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:19,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 18:23:19,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:19,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 18:23:19,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:19,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:19,241 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:19,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163828273] [2022-01-31 18:23:19,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1163828273] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:19,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:19,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-31 18:23:19,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496908915] [2022-01-31 18:23:19,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:19,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-31 18:23:19,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:19,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-31 18:23:19,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-01-31 18:23:19,242 INFO L87 Difference]: Start difference. First operand 114 states and 115 transitions. Second operand has 33 states, 32 states have (on average 1.5625) internal successors, (50), 31 states have internal predecessors, (50), 14 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-01-31 18:23:20,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:20,085 INFO L93 Difference]: Finished difference Result 124 states and 125 transitions. [2022-01-31 18:23:20,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-31 18:23:20,086 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.5625) internal successors, (50), 31 states have internal predecessors, (50), 14 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 111 [2022-01-31 18:23:20,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:20,086 INFO L225 Difference]: With dead ends: 124 [2022-01-31 18:23:20,087 INFO L226 Difference]: Without dead ends: 122 [2022-01-31 18:23:20,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=96, Invalid=1236, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 18:23:20,087 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 25 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 2152 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 2196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 2152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:20,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 406 Invalid, 2196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 2152 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 18:23:20,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-01-31 18:23:20,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2022-01-31 18:23:20,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 89 states have (on average 1.0224719101123596) internal successors, (91), 90 states have internal predecessors, (91), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-01-31 18:23:20,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2022-01-31 18:23:20,104 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 111 [2022-01-31 18:23:20,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:20,104 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2022-01-31 18:23:20,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.5625) internal successors, (50), 31 states have internal predecessors, (50), 14 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-01-31 18:23:20,104 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2022-01-31 18:23:20,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-31 18:23:20,105 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:20,105 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:20,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-31 18:23:20,105 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:20,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:20,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1397358834, now seen corresponding path program 25 times [2022-01-31 18:23:20,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:20,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498791308] [2022-01-31 18:23:20,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:20,107 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:20,107 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:20,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:20,108 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:20,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:20,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:20,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 18:23:20,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:20,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 18:23:20,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:20,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-31 18:23:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:20,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:23:20,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:20,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 18:23:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:20,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 18:23:20,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:20,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-31 18:23:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:20,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-31 18:23:20,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:20,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 18:23:20,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:20,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 18:23:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:20,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 18:23:20,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:20,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 18:23:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:20,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 18:23:20,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:20,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:20,387 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:20,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498791308] [2022-01-31 18:23:20,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1498791308] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:20,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:20,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-31 18:23:20,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560957628] [2022-01-31 18:23:20,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:20,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-31 18:23:20,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:20,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-31 18:23:20,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2022-01-31 18:23:20,390 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand has 32 states, 32 states have (on average 1.625) internal successors, (52), 31 states have internal predecessors, (52), 15 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-01-31 18:23:20,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:20,838 INFO L93 Difference]: Finished difference Result 228 states and 231 transitions. [2022-01-31 18:23:20,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-31 18:23:20,838 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.625) internal successors, (52), 31 states have internal predecessors, (52), 15 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 118 [2022-01-31 18:23:20,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:20,839 INFO L225 Difference]: With dead ends: 228 [2022-01-31 18:23:20,839 INFO L226 Difference]: Without dead ends: 126 [2022-01-31 18:23:20,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=470, Invalid=1600, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 18:23:20,841 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 112 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:20,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 71 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:23:20,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-01-31 18:23:20,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 122. [2022-01-31 18:23:20,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 90 states have (on average 1.0222222222222221) internal successors, (92), 91 states have internal predecessors, (92), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-01-31 18:23:20,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 123 transitions. [2022-01-31 18:23:20,864 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 123 transitions. Word has length 118 [2022-01-31 18:23:20,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:20,864 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 123 transitions. [2022-01-31 18:23:20,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.625) internal successors, (52), 31 states have internal predecessors, (52), 15 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-01-31 18:23:20,865 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 123 transitions. [2022-01-31 18:23:20,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-01-31 18:23:20,865 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:20,865 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:20,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-31 18:23:20,866 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:20,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:20,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1743265533, now seen corresponding path program 26 times [2022-01-31 18:23:20,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:20,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296996133] [2022-01-31 18:23:20,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:20,867 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:20,867 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:20,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:20,868 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:21,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:21,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:21,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-31 18:23:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:21,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 18:23:21,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:21,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-01-31 18:23:21,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:21,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 18:23:21,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:21,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-01-31 18:23:21,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:21,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 18:23:21,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:21,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 18:23:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:21,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 18:23:21,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:21,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 18:23:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:21,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 18:23:21,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:21,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 18:23:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:21,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 18:23:21,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:21,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 18:23:21,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:21,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:21,474 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:21,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296996133] [2022-01-31 18:23:21,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1296996133] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:21,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:21,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-01-31 18:23:21,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012148475] [2022-01-31 18:23:21,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:21,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-31 18:23:21,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:21,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-31 18:23:21,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=1122, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 18:23:21,475 INFO L87 Difference]: Start difference. First operand 122 states and 123 transitions. Second operand has 35 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 33 states have internal predecessors, (53), 15 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-01-31 18:23:22,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:22,575 INFO L93 Difference]: Finished difference Result 132 states and 133 transitions. [2022-01-31 18:23:22,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-31 18:23:22,575 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 33 states have internal predecessors, (53), 15 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 119 [2022-01-31 18:23:22,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:22,576 INFO L225 Difference]: With dead ends: 132 [2022-01-31 18:23:22,576 INFO L226 Difference]: Without dead ends: 130 [2022-01-31 18:23:22,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=141, Invalid=2511, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 18:23:22,577 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 27 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 2402 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 2450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:22,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 444 Invalid, 2450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 2402 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 18:23:22,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-01-31 18:23:22,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 129. [2022-01-31 18:23:22,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 95 states have (on average 1.0210526315789474) internal successors, (97), 96 states have internal predecessors, (97), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-01-31 18:23:22,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2022-01-31 18:23:22,594 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 119 [2022-01-31 18:23:22,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:22,594 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions. [2022-01-31 18:23:22,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 33 states have internal predecessors, (53), 15 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-01-31 18:23:22,595 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions. [2022-01-31 18:23:22,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-31 18:23:22,595 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:22,595 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:22,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-31 18:23:22,596 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:22,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:22,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1402497391, now seen corresponding path program 27 times [2022-01-31 18:23:22,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:22,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247277897] [2022-01-31 18:23:22,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:22,598 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:22,598 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:22,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:22,600 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:22,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:22,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:22,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:22,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-31 18:23:22,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:22,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 18:23:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:22,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-01-31 18:23:22,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:22,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 18:23:22,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:22,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-01-31 18:23:22,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:22,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 18:23:22,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:22,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 18:23:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:22,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 18:23:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:22,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 18:23:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:22,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 18:23:22,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:22,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 18:23:22,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:22,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 18:23:22,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:22,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 18:23:22,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:22,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 18:23:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:22,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:22,977 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:22,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [247277897] [2022-01-31 18:23:22,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [247277897] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:22,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:22,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-01-31 18:23:22,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217518472] [2022-01-31 18:23:22,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:22,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-31 18:23:22,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:22,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-31 18:23:22,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=845, Unknown=0, NotChecked=0, Total=1122 [2022-01-31 18:23:22,978 INFO L87 Difference]: Start difference. First operand 129 states and 130 transitions. Second operand has 34 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 33 states have internal predecessors, (55), 16 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-01-31 18:23:23,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:23,471 INFO L93 Difference]: Finished difference Result 243 states and 246 transitions. [2022-01-31 18:23:23,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-31 18:23:23,472 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 33 states have internal predecessors, (55), 16 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 126 [2022-01-31 18:23:23,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:23,473 INFO L225 Difference]: With dead ends: 243 [2022-01-31 18:23:23,473 INFO L226 Difference]: Without dead ends: 134 [2022-01-31 18:23:23,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=533, Invalid=1819, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 18:23:23,477 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 149 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:23,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 68 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:23:23,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-01-31 18:23:23,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 130. [2022-01-31 18:23:23,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 96 states have (on average 1.0208333333333333) internal successors, (98), 97 states have internal predecessors, (98), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-01-31 18:23:23,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 131 transitions. [2022-01-31 18:23:23,496 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 131 transitions. Word has length 126 [2022-01-31 18:23:23,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:23,496 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 131 transitions. [2022-01-31 18:23:23,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 33 states have internal predecessors, (55), 16 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-01-31 18:23:23,497 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 131 transitions. [2022-01-31 18:23:23,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-31 18:23:23,497 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:23,497 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:23,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-31 18:23:23,498 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:23,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:23,498 INFO L85 PathProgramCache]: Analyzing trace with hash 890349696, now seen corresponding path program 28 times [2022-01-31 18:23:23,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:23,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433750978] [2022-01-31 18:23:23,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:23,499 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:23,499 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:23,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:23,500 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:24,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:24,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:24,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-31 18:23:24,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:24,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-01-31 18:23:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:24,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 18:23:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:24,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-31 18:23:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:24,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 18:23:24,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:24,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 18:23:24,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:24,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 18:23:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:24,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:23:24,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:24,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:23:24,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:24,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 18:23:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:24,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 18:23:24,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:24,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 18:23:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:24,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 18:23:24,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:24,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 18:23:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:24,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:24,165 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:24,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433750978] [2022-01-31 18:23:24,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1433750978] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:24,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:24,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-31 18:23:24,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548205205] [2022-01-31 18:23:24,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:24,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-31 18:23:24,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:24,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-31 18:23:24,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=1260, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 18:23:24,166 INFO L87 Difference]: Start difference. First operand 130 states and 131 transitions. Second operand has 37 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 35 states have internal predecessors, (56), 16 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-01-31 18:23:25,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:25,486 INFO L93 Difference]: Finished difference Result 140 states and 141 transitions. [2022-01-31 18:23:25,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-31 18:23:25,486 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 35 states have internal predecessors, (56), 16 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 127 [2022-01-31 18:23:25,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:25,487 INFO L225 Difference]: With dead ends: 140 [2022-01-31 18:23:25,487 INFO L226 Difference]: Without dead ends: 138 [2022-01-31 18:23:25,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=149, Invalid=2821, Unknown=0, NotChecked=0, Total=2970 [2022-01-31 18:23:25,488 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 28 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 2746 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 2797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:25,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 492 Invalid, 2797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2746 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 18:23:25,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-01-31 18:23:25,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137. [2022-01-31 18:23:25,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 101 states have (on average 1.0198019801980198) internal successors, (103), 102 states have internal predecessors, (103), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-01-31 18:23:25,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 138 transitions. [2022-01-31 18:23:25,509 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 138 transitions. Word has length 127 [2022-01-31 18:23:25,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:25,509 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 138 transitions. [2022-01-31 18:23:25,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 35 states have internal predecessors, (56), 16 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-01-31 18:23:25,510 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 138 transitions. [2022-01-31 18:23:25,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-31 18:23:25,510 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:25,510 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:25,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-31 18:23:25,511 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:25,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:25,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1621906606, now seen corresponding path program 29 times [2022-01-31 18:23:25,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:25,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549689726] [2022-01-31 18:23:25,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:25,516 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:25,516 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:25,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:25,518 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:25,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:25,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-31 18:23:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:25,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-01-31 18:23:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:25,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 18:23:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:25,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-31 18:23:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:25,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 18:23:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:25,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 18:23:25,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:25,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 18:23:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:25,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:23:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:25,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:23:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:25,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 18:23:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:25,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 18:23:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:25,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 18:23:25,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:25,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 18:23:25,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:25,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 18:23:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:25,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 18:23:25,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:25,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:25,892 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:25,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549689726] [2022-01-31 18:23:25,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1549689726] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:25,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:25,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-31 18:23:25,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303786440] [2022-01-31 18:23:25,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:25,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-31 18:23:25,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:25,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-31 18:23:25,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2022-01-31 18:23:25,894 INFO L87 Difference]: Start difference. First operand 137 states and 138 transitions. Second operand has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 35 states have internal predecessors, (58), 17 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-01-31 18:23:26,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:26,365 INFO L93 Difference]: Finished difference Result 258 states and 261 transitions. [2022-01-31 18:23:26,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-31 18:23:26,366 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 35 states have internal predecessors, (58), 17 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 134 [2022-01-31 18:23:26,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:26,366 INFO L225 Difference]: With dead ends: 258 [2022-01-31 18:23:26,366 INFO L226 Difference]: Without dead ends: 142 [2022-01-31 18:23:26,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=600, Invalid=2052, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 18:23:26,367 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 114 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:26,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 93 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:23:26,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-01-31 18:23:26,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 138. [2022-01-31 18:23:26,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 102 states have (on average 1.0196078431372548) internal successors, (104), 103 states have internal predecessors, (104), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-01-31 18:23:26,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 139 transitions. [2022-01-31 18:23:26,386 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 139 transitions. Word has length 134 [2022-01-31 18:23:26,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:26,386 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 139 transitions. [2022-01-31 18:23:26,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 35 states have internal predecessors, (58), 17 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-01-31 18:23:26,386 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 139 transitions. [2022-01-31 18:23:26,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-31 18:23:26,387 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:26,387 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:26,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-31 18:23:26,387 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:26,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:26,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1482077853, now seen corresponding path program 30 times [2022-01-31 18:23:26,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:26,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707597034] [2022-01-31 18:23:26,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:26,388 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:26,388 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:26,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:26,389 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:26,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:26,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:26,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-31 18:23:26,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:26,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 18:23:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:26,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 18:23:26,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:27,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 18:23:27,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:27,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 18:23:27,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:27,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 18:23:27,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:27,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-31 18:23:27,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:27,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 18:23:27,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:27,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 18:23:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:27,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 18:23:27,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:27,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 18:23:27,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:27,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 18:23:27,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:27,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 18:23:27,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:27,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 18:23:27,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:27,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 18:23:27,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:27,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:27,032 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:27,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707597034] [2022-01-31 18:23:27,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [707597034] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:27,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:27,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-01-31 18:23:27,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079670077] [2022-01-31 18:23:27,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:27,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-31 18:23:27,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:27,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-31 18:23:27,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=1406, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 18:23:27,033 INFO L87 Difference]: Start difference. First operand 138 states and 139 transitions. Second operand has 39 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 37 states have internal predecessors, (59), 17 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-01-31 18:23:28,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:28,365 INFO L93 Difference]: Finished difference Result 148 states and 149 transitions. [2022-01-31 18:23:28,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-31 18:23:28,366 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 37 states have internal predecessors, (59), 17 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 135 [2022-01-31 18:23:28,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:28,367 INFO L225 Difference]: With dead ends: 148 [2022-01-31 18:23:28,367 INFO L226 Difference]: Without dead ends: 146 [2022-01-31 18:23:28,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=157, Invalid=3149, Unknown=0, NotChecked=0, Total=3306 [2022-01-31 18:23:28,368 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 29 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 3028 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 3082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 3028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:28,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 534 Invalid, 3082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 3028 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 18:23:28,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-01-31 18:23:28,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 145. [2022-01-31 18:23:28,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 107 states have (on average 1.0186915887850467) internal successors, (109), 108 states have internal predecessors, (109), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-01-31 18:23:28,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 146 transitions. [2022-01-31 18:23:28,389 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 146 transitions. Word has length 135 [2022-01-31 18:23:28,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:28,389 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 146 transitions. [2022-01-31 18:23:28,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 37 states have internal predecessors, (59), 17 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-01-31 18:23:28,389 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 146 transitions. [2022-01-31 18:23:28,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-31 18:23:28,390 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:28,390 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:28,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-31 18:23:28,390 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:28,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:28,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1033032975, now seen corresponding path program 31 times [2022-01-31 18:23:28,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:28,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486960698] [2022-01-31 18:23:28,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:28,391 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:28,391 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:28,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:28,392 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:28,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:28,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:28,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:28,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-31 18:23:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:28,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 18:23:28,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:28,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 18:23:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:28,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 18:23:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:28,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 18:23:28,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:28,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 18:23:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:28,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-31 18:23:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:28,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 18:23:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:28,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 18:23:28,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:28,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 18:23:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:28,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 18:23:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:28,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 18:23:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:28,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 18:23:28,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:28,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 18:23:28,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:28,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 18:23:28,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:28,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 18:23:28,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:28,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:28,812 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:28,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486960698] [2022-01-31 18:23:28,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [486960698] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:28,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:28,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-01-31 18:23:28,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176625378] [2022-01-31 18:23:28,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:28,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-31 18:23:28,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:28,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-31 18:23:28,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=1059, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 18:23:28,814 INFO L87 Difference]: Start difference. First operand 145 states and 146 transitions. Second operand has 38 states, 38 states have (on average 1.605263157894737) internal successors, (61), 37 states have internal predecessors, (61), 18 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-01-31 18:23:29,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:29,328 INFO L93 Difference]: Finished difference Result 273 states and 276 transitions. [2022-01-31 18:23:29,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-31 18:23:29,329 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.605263157894737) internal successors, (61), 37 states have internal predecessors, (61), 18 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 142 [2022-01-31 18:23:29,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:29,330 INFO L225 Difference]: With dead ends: 273 [2022-01-31 18:23:29,330 INFO L226 Difference]: Without dead ends: 150 [2022-01-31 18:23:29,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=671, Invalid=2299, Unknown=0, NotChecked=0, Total=2970 [2022-01-31 18:23:29,331 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 105 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:29,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 143 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:23:29,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-01-31 18:23:29,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 146. [2022-01-31 18:23:29,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 108 states have (on average 1.0185185185185186) internal successors, (110), 109 states have internal predecessors, (110), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-01-31 18:23:29,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 147 transitions. [2022-01-31 18:23:29,353 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 147 transitions. Word has length 142 [2022-01-31 18:23:29,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:29,353 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 147 transitions. [2022-01-31 18:23:29,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.605263157894737) internal successors, (61), 37 states have internal predecessors, (61), 18 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-01-31 18:23:29,353 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 147 transitions. [2022-01-31 18:23:29,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-31 18:23:29,354 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:29,354 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:29,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-31 18:23:29,354 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:29,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:29,354 INFO L85 PathProgramCache]: Analyzing trace with hash 905302560, now seen corresponding path program 32 times [2022-01-31 18:23:29,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:29,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650136320] [2022-01-31 18:23:29,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:29,355 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:29,356 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:29,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:29,357 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:29,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:30,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:30,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:30,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:23:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:30,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-31 18:23:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:30,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 18:23:30,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:30,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-31 18:23:30,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:30,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 18:23:30,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:30,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 18:23:30,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:30,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 18:23:30,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:30,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 18:23:30,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:30,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 18:23:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:30,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 18:23:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:30,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 18:23:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:30,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 18:23:30,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:30,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 18:23:30,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:30,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 18:23:30,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:30,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 18:23:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:30,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 18:23:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:30,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:30,174 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:30,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650136320] [2022-01-31 18:23:30,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [650136320] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:30,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:30,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2022-01-31 18:23:30,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250199672] [2022-01-31 18:23:30,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:30,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-31 18:23:30,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:30,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-31 18:23:30,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1560, Unknown=0, NotChecked=0, Total=1640 [2022-01-31 18:23:30,175 INFO L87 Difference]: Start difference. First operand 146 states and 147 transitions. Second operand has 41 states, 40 states have (on average 1.55) internal successors, (62), 39 states have internal predecessors, (62), 18 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-01-31 18:23:31,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:31,691 INFO L93 Difference]: Finished difference Result 156 states and 157 transitions. [2022-01-31 18:23:31,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-31 18:23:31,692 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.55) internal successors, (62), 39 states have internal predecessors, (62), 18 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 143 [2022-01-31 18:23:31,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:31,692 INFO L225 Difference]: With dead ends: 156 [2022-01-31 18:23:31,692 INFO L226 Difference]: Without dead ends: 154 [2022-01-31 18:23:31,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=165, Invalid=3495, Unknown=0, NotChecked=0, Total=3660 [2022-01-31 18:23:31,693 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 30 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 3368 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 3425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 3368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:31,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 582 Invalid, 3425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 3368 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 18:23:31,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-01-31 18:23:31,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2022-01-31 18:23:31,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 113 states have (on average 1.0176991150442478) internal successors, (115), 114 states have internal predecessors, (115), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-01-31 18:23:31,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2022-01-31 18:23:31,718 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 143 [2022-01-31 18:23:31,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:31,718 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2022-01-31 18:23:31,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 1.55) internal successors, (62), 39 states have internal predecessors, (62), 18 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-01-31 18:23:31,718 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2022-01-31 18:23:31,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-01-31 18:23:31,719 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:31,719 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:31,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-31 18:23:31,719 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:31,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:31,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1831113294, now seen corresponding path program 33 times [2022-01-31 18:23:31,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:31,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883409347] [2022-01-31 18:23:31,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:31,720 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:31,720 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:31,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:31,721 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:32,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:32,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:32,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:23:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:32,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-31 18:23:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:32,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 18:23:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:32,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-31 18:23:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:32,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 18:23:32,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:32,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 18:23:32,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:32,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 18:23:32,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:32,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 18:23:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:32,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 18:23:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:32,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 18:23:32,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:32,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 18:23:32,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:32,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 18:23:32,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:32,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 18:23:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:32,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 18:23:32,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:32,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 18:23:32,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:32,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 18:23:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:32,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 18:23:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:32,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:32,199 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:32,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883409347] [2022-01-31 18:23:32,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1883409347] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:32,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:32,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-01-31 18:23:32,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164413824] [2022-01-31 18:23:32,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:32,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-31 18:23:32,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:32,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-31 18:23:32,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=385, Invalid=1175, Unknown=0, NotChecked=0, Total=1560 [2022-01-31 18:23:32,200 INFO L87 Difference]: Start difference. First operand 153 states and 154 transitions. Second operand has 40 states, 40 states have (on average 1.6) internal successors, (64), 39 states have internal predecessors, (64), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-01-31 18:23:32,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:32,782 INFO L93 Difference]: Finished difference Result 288 states and 291 transitions. [2022-01-31 18:23:32,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-31 18:23:32,782 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.6) internal successors, (64), 39 states have internal predecessors, (64), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 150 [2022-01-31 18:23:32,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:32,783 INFO L225 Difference]: With dead ends: 288 [2022-01-31 18:23:32,783 INFO L226 Difference]: Without dead ends: 158 [2022-01-31 18:23:32,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 698 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=746, Invalid=2560, Unknown=0, NotChecked=0, Total=3306 [2022-01-31 18:23:32,784 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 136 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 1021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:32,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 103 Invalid, 1021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:23:32,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-01-31 18:23:32,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 154. [2022-01-31 18:23:32,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 114 states have (on average 1.0175438596491229) internal successors, (116), 115 states have internal predecessors, (116), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-01-31 18:23:32,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 155 transitions. [2022-01-31 18:23:32,808 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 155 transitions. Word has length 150 [2022-01-31 18:23:32,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:32,808 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 155 transitions. [2022-01-31 18:23:32,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.6) internal successors, (64), 39 states have internal predecessors, (64), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-01-31 18:23:32,808 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 155 transitions. [2022-01-31 18:23:32,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-01-31 18:23:32,808 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:32,808 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:32,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-31 18:23:32,809 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:32,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:32,809 INFO L85 PathProgramCache]: Analyzing trace with hash -2088973885, now seen corresponding path program 34 times [2022-01-31 18:23:32,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:32,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811012437] [2022-01-31 18:23:32,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:32,810 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:32,810 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:32,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:32,811 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:33,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:33,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:33,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-01-31 18:23:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:33,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 18:23:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:33,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-31 18:23:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:33,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-31 18:23:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:33,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-01-31 18:23:33,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:33,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 18:23:33,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:33,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 18:23:33,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:33,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 18:23:33,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:33,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 18:23:33,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:33,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 18:23:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:33,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 18:23:33,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:33,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 18:23:33,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:33,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 18:23:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:33,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 18:23:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:33,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 18:23:33,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:33,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 18:23:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:33,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 18:23:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:33,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:33,610 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:33,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811012437] [2022-01-31 18:23:33,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [811012437] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:33,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:33,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-01-31 18:23:33,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67252667] [2022-01-31 18:23:33,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:33,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-31 18:23:33,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:33,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-31 18:23:33,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=1722, Unknown=0, NotChecked=0, Total=1806 [2022-01-31 18:23:33,611 INFO L87 Difference]: Start difference. First operand 154 states and 155 transitions. Second operand has 43 states, 42 states have (on average 1.5476190476190477) internal successors, (65), 41 states have internal predecessors, (65), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-01-31 18:23:35,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:35,460 INFO L93 Difference]: Finished difference Result 164 states and 165 transitions. [2022-01-31 18:23:35,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-31 18:23:35,461 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 1.5476190476190477) internal successors, (65), 41 states have internal predecessors, (65), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 151 [2022-01-31 18:23:35,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:35,462 INFO L225 Difference]: With dead ends: 164 [2022-01-31 18:23:35,462 INFO L226 Difference]: Without dead ends: 162 [2022-01-31 18:23:35,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=173, Invalid=3859, Unknown=0, NotChecked=0, Total=4032 [2022-01-31 18:23:35,462 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 31 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 3726 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 3786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 3726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:35,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 632 Invalid, 3786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 3726 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-31 18:23:35,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-01-31 18:23:35,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2022-01-31 18:23:35,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 119 states have (on average 1.0168067226890756) internal successors, (121), 120 states have internal predecessors, (121), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-31 18:23:35,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 162 transitions. [2022-01-31 18:23:35,489 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 162 transitions. Word has length 151 [2022-01-31 18:23:35,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:35,489 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 162 transitions. [2022-01-31 18:23:35,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 1.5476190476190477) internal successors, (65), 41 states have internal predecessors, (65), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-01-31 18:23:35,489 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 162 transitions. [2022-01-31 18:23:35,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-31 18:23:35,490 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:35,490 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:35,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-31 18:23:35,490 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:35,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:35,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1992283985, now seen corresponding path program 35 times [2022-01-31 18:23:35,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:35,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105213789] [2022-01-31 18:23:35,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:35,491 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:35,491 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:35,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:35,492 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:35,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:35,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:35,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:35,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-01-31 18:23:35,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:35,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 18:23:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:35,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-31 18:23:35,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:35,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-31 18:23:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:35,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-01-31 18:23:35,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:35,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 18:23:35,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:35,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 18:23:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:35,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 18:23:35,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:35,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 18:23:35,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:35,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 18:23:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:35,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 18:23:35,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:35,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 18:23:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:35,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 18:23:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:35,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 18:23:35,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:35,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 18:23:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:35,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 18:23:35,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:35,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 18:23:35,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:35,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 18:23:35,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:35,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:35,962 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:35,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105213789] [2022-01-31 18:23:35,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1105213789] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:35,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:35,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-01-31 18:23:35,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557556888] [2022-01-31 18:23:35,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:35,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-31 18:23:35,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:35,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-31 18:23:35,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=425, Invalid=1297, Unknown=0, NotChecked=0, Total=1722 [2022-01-31 18:23:35,963 INFO L87 Difference]: Start difference. First operand 161 states and 162 transitions. Second operand has 42 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 41 states have internal predecessors, (67), 20 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-01-31 18:23:36,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:36,616 INFO L93 Difference]: Finished difference Result 303 states and 306 transitions. [2022-01-31 18:23:36,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-31 18:23:36,616 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 41 states have internal predecessors, (67), 20 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 158 [2022-01-31 18:23:36,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:36,617 INFO L225 Difference]: With dead ends: 303 [2022-01-31 18:23:36,617 INFO L226 Difference]: Without dead ends: 166 [2022-01-31 18:23:36,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=825, Invalid=2835, Unknown=0, NotChecked=0, Total=3660 [2022-01-31 18:23:36,618 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 117 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:36,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 205 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 18:23:36,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-01-31 18:23:36,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 162. [2022-01-31 18:23:36,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 120 states have (on average 1.0166666666666666) internal successors, (122), 121 states have internal predecessors, (122), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-31 18:23:36,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 163 transitions. [2022-01-31 18:23:36,657 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 163 transitions. Word has length 158 [2022-01-31 18:23:36,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:36,657 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 163 transitions. [2022-01-31 18:23:36,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 41 states have internal predecessors, (67), 20 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-01-31 18:23:36,658 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 163 transitions. [2022-01-31 18:23:36,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-31 18:23:36,658 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:36,659 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:36,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-31 18:23:36,659 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:36,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:36,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1185881152, now seen corresponding path program 36 times [2022-01-31 18:23:36,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:36,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701699740] [2022-01-31 18:23:36,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:36,661 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:36,661 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:36,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:36,663 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:37,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:37,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 18:23:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:37,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-31 18:23:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:37,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 18:23:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:37,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 18:23:37,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:37,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-01-31 18:23:37,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:37,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-31 18:23:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:37,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 18:23:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:37,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 18:23:37,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:37,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 18:23:37,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:37,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 18:23:37,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:37,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 18:23:37,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:37,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 18:23:37,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:37,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 18:23:37,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:37,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-31 18:23:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:37,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:23:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:37,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 18:23:37,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:37,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:23:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:37,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 18:23:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:37,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:37,512 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:37,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701699740] [2022-01-31 18:23:37,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [701699740] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:37,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:37,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-01-31 18:23:37,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758465181] [2022-01-31 18:23:37,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:37,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-31 18:23:37,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:37,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-31 18:23:37,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1892, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 18:23:37,514 INFO L87 Difference]: Start difference. First operand 162 states and 163 transitions. Second operand has 45 states, 44 states have (on average 1.5454545454545454) internal successors, (68), 43 states have internal predecessors, (68), 20 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-01-31 18:23:39,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:39,334 INFO L93 Difference]: Finished difference Result 172 states and 173 transitions. [2022-01-31 18:23:39,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-31 18:23:39,334 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 1.5454545454545454) internal successors, (68), 43 states have internal predecessors, (68), 20 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 159 [2022-01-31 18:23:39,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:39,335 INFO L225 Difference]: With dead ends: 172 [2022-01-31 18:23:39,335 INFO L226 Difference]: Without dead ends: 170 [2022-01-31 18:23:39,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=181, Invalid=4241, Unknown=0, NotChecked=0, Total=4422 [2022-01-31 18:23:39,336 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 32 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 4150 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 4213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 4150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:39,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 688 Invalid, 4213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 4150 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-31 18:23:39,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-01-31 18:23:39,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 169. [2022-01-31 18:23:39,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 125 states have (on average 1.016) internal successors, (127), 126 states have internal predecessors, (127), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2022-01-31 18:23:39,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 170 transitions. [2022-01-31 18:23:39,364 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 170 transitions. Word has length 159 [2022-01-31 18:23:39,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:39,365 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 170 transitions. [2022-01-31 18:23:39,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 1.5454545454545454) internal successors, (68), 43 states have internal predecessors, (68), 20 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-01-31 18:23:39,365 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 170 transitions. [2022-01-31 18:23:39,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-01-31 18:23:39,365 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:39,365 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:39,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-31 18:23:39,366 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:39,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:39,366 INFO L85 PathProgramCache]: Analyzing trace with hash -2083043310, now seen corresponding path program 37 times [2022-01-31 18:23:39,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:39,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886208250] [2022-01-31 18:23:39,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:39,367 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:39,367 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:39,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:39,368 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:39,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:39,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:39,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:39,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 18:23:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:39,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-31 18:23:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:39,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 18:23:39,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:39,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 18:23:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:39,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-01-31 18:23:39,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:39,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-31 18:23:39,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:39,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 18:23:39,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:39,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 18:23:39,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:39,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 18:23:39,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:39,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 18:23:39,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:39,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 18:23:39,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:39,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 18:23:39,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:39,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 18:23:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:39,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-31 18:23:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:39,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:23:39,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:39,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 18:23:39,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:39,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:23:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:39,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 18:23:39,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:39,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 18:23:39,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:39,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:39,900 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:39,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886208250] [2022-01-31 18:23:39,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1886208250] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:39,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:39,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-01-31 18:23:39,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227099165] [2022-01-31 18:23:39,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:39,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-31 18:23:39,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:39,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-31 18:23:39,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=1425, Unknown=0, NotChecked=0, Total=1892 [2022-01-31 18:23:39,901 INFO L87 Difference]: Start difference. First operand 169 states and 170 transitions. Second operand has 44 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 43 states have internal predecessors, (70), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-31 18:23:40,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:40,553 INFO L93 Difference]: Finished difference Result 318 states and 321 transitions. [2022-01-31 18:23:40,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-31 18:23:40,554 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 43 states have internal predecessors, (70), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 166 [2022-01-31 18:23:40,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:40,555 INFO L225 Difference]: With dead ends: 318 [2022-01-31 18:23:40,555 INFO L226 Difference]: Without dead ends: 174 [2022-01-31 18:23:40,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=908, Invalid=3124, Unknown=0, NotChecked=0, Total=4032 [2022-01-31 18:23:40,556 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 148 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:40,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 137 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 18:23:40,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-01-31 18:23:40,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 170. [2022-01-31 18:23:40,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 126 states have (on average 1.0158730158730158) internal successors, (128), 127 states have internal predecessors, (128), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2022-01-31 18:23:40,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 171 transitions. [2022-01-31 18:23:40,592 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 171 transitions. Word has length 166 [2022-01-31 18:23:40,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:40,592 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 171 transitions. [2022-01-31 18:23:40,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 43 states have internal predecessors, (70), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-31 18:23:40,592 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 171 transitions. [2022-01-31 18:23:40,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-31 18:23:40,593 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:40,593 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:40,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-31 18:23:40,593 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:40,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:40,594 INFO L85 PathProgramCache]: Analyzing trace with hash 2038981155, now seen corresponding path program 38 times [2022-01-31 18:23:40,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:40,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263221448] [2022-01-31 18:23:40,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:40,595 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:40,595 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:40,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:40,600 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:40,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:41,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:41,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:41,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 18:23:41,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:41,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-31 18:23:41,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:41,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:23:41,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:41,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 18:23:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:41,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 18:23:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:41,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-31 18:23:41,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:41,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-31 18:23:41,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:41,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 18:23:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:41,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 18:23:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:41,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 18:23:41,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:41,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 18:23:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:41,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 18:23:41,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:41,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 18:23:41,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:41,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 18:23:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:41,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-31 18:23:41,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:41,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 18:23:41,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:41,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 18:23:41,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:41,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 18:23:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:41,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 18:23:41,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:41,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:41,641 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:41,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263221448] [2022-01-31 18:23:41,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [263221448] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:41,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:41,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2022-01-31 18:23:41,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635043318] [2022-01-31 18:23:41,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:41,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-31 18:23:41,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:41,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-31 18:23:41,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=2051, Unknown=0, NotChecked=0, Total=2162 [2022-01-31 18:23:41,643 INFO L87 Difference]: Start difference. First operand 170 states and 171 transitions. Second operand has 47 states, 46 states have (on average 1.5434782608695652) internal successors, (71), 45 states have internal predecessors, (71), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-31 18:23:43,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:43,027 INFO L93 Difference]: Finished difference Result 180 states and 181 transitions. [2022-01-31 18:23:43,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-31 18:23:43,027 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.5434782608695652) internal successors, (71), 45 states have internal predecessors, (71), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 167 [2022-01-31 18:23:43,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:43,028 INFO L225 Difference]: With dead ends: 180 [2022-01-31 18:23:43,028 INFO L226 Difference]: Without dead ends: 178 [2022-01-31 18:23:43,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=2419, Unknown=0, NotChecked=0, Total=2550 [2022-01-31 18:23:43,029 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 33 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 4096 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 4162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 4096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:43,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 706 Invalid, 4162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 4096 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-31 18:23:43,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-01-31 18:23:43,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 177. [2022-01-31 18:23:43,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 131 states have (on average 1.015267175572519) internal successors, (133), 132 states have internal predecessors, (133), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-01-31 18:23:43,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 178 transitions. [2022-01-31 18:23:43,059 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 178 transitions. Word has length 167 [2022-01-31 18:23:43,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:43,060 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 178 transitions. [2022-01-31 18:23:43,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.5434782608695652) internal successors, (71), 45 states have internal predecessors, (71), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-31 18:23:43,060 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 178 transitions. [2022-01-31 18:23:43,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-01-31 18:23:43,060 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:43,060 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:43,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-31 18:23:43,060 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:43,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:43,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1743414351, now seen corresponding path program 39 times [2022-01-31 18:23:43,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:43,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734519031] [2022-01-31 18:23:43,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:43,062 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:43,062 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:43,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:43,063 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:43,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:43,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:43,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:43,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 18:23:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:43,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-31 18:23:43,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:43,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:23:43,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:43,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 18:23:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:43,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 18:23:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:43,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-31 18:23:43,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:43,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-31 18:23:43,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:43,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 18:23:43,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:43,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 18:23:43,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:43,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 18:23:43,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:43,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 18:23:43,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:43,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 18:23:43,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:43,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 18:23:43,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:43,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 18:23:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:43,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-31 18:23:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:43,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 18:23:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:43,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 18:23:43,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:43,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 18:23:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:43,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 18:23:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:43,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 18:23:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:43,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:43,640 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:43,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734519031] [2022-01-31 18:23:43,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1734519031] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:43,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:43,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-01-31 18:23:43,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381929973] [2022-01-31 18:23:43,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:43,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-31 18:23:43,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:43,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-31 18:23:43,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=511, Invalid=1559, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 18:23:43,642 INFO L87 Difference]: Start difference. First operand 177 states and 178 transitions. Second operand has 46 states, 46 states have (on average 1.5869565217391304) internal successors, (73), 45 states have internal predecessors, (73), 22 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-01-31 18:23:44,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:44,324 INFO L93 Difference]: Finished difference Result 333 states and 336 transitions. [2022-01-31 18:23:44,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-31 18:23:44,324 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.5869565217391304) internal successors, (73), 45 states have internal predecessors, (73), 22 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 174 [2022-01-31 18:23:44,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:44,337 INFO L225 Difference]: With dead ends: 333 [2022-01-31 18:23:44,337 INFO L226 Difference]: Without dead ends: 182 [2022-01-31 18:23:44,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 941 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=995, Invalid=3427, Unknown=0, NotChecked=0, Total=4422 [2022-01-31 18:23:44,343 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 167 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 1202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:44,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 117 Invalid, 1202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 18:23:44,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-01-31 18:23:44,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 178. [2022-01-31 18:23:44,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 132 states have (on average 1.0151515151515151) internal successors, (134), 133 states have internal predecessors, (134), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-01-31 18:23:44,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 179 transitions. [2022-01-31 18:23:44,380 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 179 transitions. Word has length 174 [2022-01-31 18:23:44,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:44,380 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 179 transitions. [2022-01-31 18:23:44,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.5869565217391304) internal successors, (73), 45 states have internal predecessors, (73), 22 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-01-31 18:23:44,380 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 179 transitions. [2022-01-31 18:23:44,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-31 18:23:44,381 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:44,381 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:44,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-31 18:23:44,381 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:44,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:44,381 INFO L85 PathProgramCache]: Analyzing trace with hash -395518624, now seen corresponding path program 40 times [2022-01-31 18:23:44,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:44,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460137323] [2022-01-31 18:23:44,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:44,382 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:44,382 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:44,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:44,387 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:44,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:45,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:45,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:45,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 18:23:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:45,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-01-31 18:23:45,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:45,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 18:23:45,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:45,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-01-31 18:23:45,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:45,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 18:23:45,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:45,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 18:23:45,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:45,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 18:23:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:45,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 18:23:45,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:45,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 18:23:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:45,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 18:23:45,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:45,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 18:23:45,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:45,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 18:23:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:45,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 18:23:45,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:45,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 18:23:45,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:45,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 18:23:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:45,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 18:23:45,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:45,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 18:23:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:45,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 18:23:45,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:45,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 18:23:45,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:45,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 18:23:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:45,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:45,516 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:45,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460137323] [2022-01-31 18:23:45,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1460137323] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:45,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:45,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-01-31 18:23:45,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614944995] [2022-01-31 18:23:45,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:45,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-31 18:23:45,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:45,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-31 18:23:45,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=2256, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 18:23:45,517 INFO L87 Difference]: Start difference. First operand 178 states and 179 transitions. Second operand has 49 states, 48 states have (on average 1.5416666666666667) internal successors, (74), 47 states have internal predecessors, (74), 22 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-01-31 18:23:47,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:47,665 INFO L93 Difference]: Finished difference Result 188 states and 189 transitions. [2022-01-31 18:23:47,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-31 18:23:47,666 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 1.5416666666666667) internal successors, (74), 47 states have internal predecessors, (74), 22 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 175 [2022-01-31 18:23:47,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:47,667 INFO L225 Difference]: With dead ends: 188 [2022-01-31 18:23:47,667 INFO L226 Difference]: Without dead ends: 186 [2022-01-31 18:23:47,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=197, Invalid=5059, Unknown=0, NotChecked=0, Total=5256 [2022-01-31 18:23:47,670 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 34 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 4908 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 4977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 4908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:47,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 794 Invalid, 4977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 4908 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-31 18:23:47,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-01-31 18:23:47,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 185. [2022-01-31 18:23:47,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 137 states have (on average 1.0145985401459854) internal successors, (139), 138 states have internal predecessors, (139), 24 states have call successors, (24), 24 states have call predecessors, (24), 23 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2022-01-31 18:23:47,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 186 transitions. [2022-01-31 18:23:47,711 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 186 transitions. Word has length 175 [2022-01-31 18:23:47,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:47,711 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 186 transitions. [2022-01-31 18:23:47,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 1.5416666666666667) internal successors, (74), 47 states have internal predecessors, (74), 22 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-01-31 18:23:47,712 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 186 transitions. [2022-01-31 18:23:47,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-01-31 18:23:47,712 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:47,712 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:47,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-31 18:23:47,712 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:47,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:47,713 INFO L85 PathProgramCache]: Analyzing trace with hash 566049394, now seen corresponding path program 41 times [2022-01-31 18:23:47,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:47,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283183580] [2022-01-31 18:23:47,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:47,714 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:47,714 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:47,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:47,715 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:47,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:48,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:48,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 18:23:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:48,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-01-31 18:23:48,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:48,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 18:23:48,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:48,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-01-31 18:23:48,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:48,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 18:23:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:48,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 18:23:48,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:48,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 18:23:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:48,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 18:23:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:48,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 18:23:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:48,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 18:23:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:48,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 18:23:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:48,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 18:23:48,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:48,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 18:23:48,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:48,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 18:23:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:48,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 18:23:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:48,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 18:23:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:48,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 18:23:48,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:48,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 18:23:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:48,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 18:23:48,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:48,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 18:23:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:48,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 18:23:48,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:48,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:48,328 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:48,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283183580] [2022-01-31 18:23:48,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [283183580] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:48,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:48,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-01-31 18:23:48,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903933874] [2022-01-31 18:23:48,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:48,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-01-31 18:23:48,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:48,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-01-31 18:23:48,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=557, Invalid=1699, Unknown=0, NotChecked=0, Total=2256 [2022-01-31 18:23:48,329 INFO L87 Difference]: Start difference. First operand 185 states and 186 transitions. Second operand has 48 states, 48 states have (on average 1.5833333333333333) internal successors, (76), 47 states have internal predecessors, (76), 23 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-01-31 18:23:49,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:49,077 INFO L93 Difference]: Finished difference Result 348 states and 351 transitions. [2022-01-31 18:23:49,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-31 18:23:49,078 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.5833333333333333) internal successors, (76), 47 states have internal predecessors, (76), 23 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 182 [2022-01-31 18:23:49,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:49,078 INFO L225 Difference]: With dead ends: 348 [2022-01-31 18:23:49,078 INFO L226 Difference]: Without dead ends: 190 [2022-01-31 18:23:49,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1030 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1086, Invalid=3744, Unknown=0, NotChecked=0, Total=4830 [2022-01-31 18:23:49,080 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 136 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:49,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 201 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 18:23:49,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-01-31 18:23:49,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 186. [2022-01-31 18:23:49,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 138 states have (on average 1.0144927536231885) internal successors, (140), 139 states have internal predecessors, (140), 24 states have call successors, (24), 24 states have call predecessors, (24), 23 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2022-01-31 18:23:49,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 187 transitions. [2022-01-31 18:23:49,114 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 187 transitions. Word has length 182 [2022-01-31 18:23:49,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:49,114 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 187 transitions. [2022-01-31 18:23:49,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.5833333333333333) internal successors, (76), 47 states have internal predecessors, (76), 23 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-01-31 18:23:49,114 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 187 transitions. [2022-01-31 18:23:49,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-01-31 18:23:49,115 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:49,115 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:49,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-31 18:23:49,115 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:49,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:49,115 INFO L85 PathProgramCache]: Analyzing trace with hash 826413699, now seen corresponding path program 42 times [2022-01-31 18:23:49,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:49,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287459726] [2022-01-31 18:23:49,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:49,116 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:49,117 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:49,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:49,118 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:50,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:50,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:50,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-01-31 18:23:50,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:50,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 18:23:50,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:50,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-31 18:23:50,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:50,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 18:23:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:50,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 18:23:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:50,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 18:23:50,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:50,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:23:50,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:50,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:23:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:50,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 18:23:50,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:50,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 18:23:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:50,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 18:23:50,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:50,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 18:23:50,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:50,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 18:23:50,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:50,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 18:23:50,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:50,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 18:23:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:50,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 18:23:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:50,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-31 18:23:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:50,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 18:23:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:50,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 18:23:50,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:50,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 18:23:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:50,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 18:23:50,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:50,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:50,262 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:50,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287459726] [2022-01-31 18:23:50,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [287459726] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:50,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:50,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2022-01-31 18:23:50,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108861900] [2022-01-31 18:23:50,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:50,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-31 18:23:50,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:50,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-31 18:23:50,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=2450, Unknown=0, NotChecked=0, Total=2550 [2022-01-31 18:23:50,264 INFO L87 Difference]: Start difference. First operand 186 states and 187 transitions. Second operand has 51 states, 50 states have (on average 1.54) internal successors, (77), 49 states have internal predecessors, (77), 23 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-01-31 18:23:52,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:52,565 INFO L93 Difference]: Finished difference Result 196 states and 197 transitions. [2022-01-31 18:23:52,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-31 18:23:52,566 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 1.54) internal successors, (77), 49 states have internal predecessors, (77), 23 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 183 [2022-01-31 18:23:52,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:52,566 INFO L225 Difference]: With dead ends: 196 [2022-01-31 18:23:52,566 INFO L226 Difference]: Without dead ends: 194 [2022-01-31 18:23:52,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=205, Invalid=5495, Unknown=0, NotChecked=0, Total=5700 [2022-01-31 18:23:52,567 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 35 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 5392 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 5464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 5392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:52,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 856 Invalid, 5464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 5392 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-31 18:23:52,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-01-31 18:23:52,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 193. [2022-01-31 18:23:52,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 143 states have (on average 1.013986013986014) internal successors, (145), 144 states have internal predecessors, (145), 25 states have call successors, (25), 25 states have call predecessors, (25), 24 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-31 18:23:52,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 194 transitions. [2022-01-31 18:23:52,613 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 194 transitions. Word has length 183 [2022-01-31 18:23:52,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:52,613 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 194 transitions. [2022-01-31 18:23:52,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 1.54) internal successors, (77), 49 states have internal predecessors, (77), 23 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-01-31 18:23:52,614 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 194 transitions. [2022-01-31 18:23:52,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:23:52,614 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:52,614 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:52,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-31 18:23:52,614 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:52,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:52,615 INFO L85 PathProgramCache]: Analyzing trace with hash 22775791, now seen corresponding path program 43 times [2022-01-31 18:23:52,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:52,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292166719] [2022-01-31 18:23:52,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:52,616 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:52,616 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:52,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:52,617 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:53,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:53,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:53,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-01-31 18:23:53,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:53,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 18:23:53,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:53,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-31 18:23:53,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:53,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 18:23:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:53,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 18:23:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:53,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 18:23:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:53,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:23:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:53,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:23:53,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:53,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 18:23:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:53,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 18:23:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:53,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 18:23:53,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:53,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 18:23:53,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:53,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 18:23:53,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:53,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 18:23:53,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:53,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 18:23:53,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:53,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 18:23:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:53,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-31 18:23:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:53,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 18:23:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:53,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 18:23:53,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:53,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 18:23:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:53,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 18:23:53,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:53,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 18:23:53,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:53,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:53,243 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:53,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292166719] [2022-01-31 18:23:53,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1292166719] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:53,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:53,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2022-01-31 18:23:53,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866758552] [2022-01-31 18:23:53,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:53,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-31 18:23:53,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:53,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-31 18:23:53,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=605, Invalid=1845, Unknown=0, NotChecked=0, Total=2450 [2022-01-31 18:23:53,245 INFO L87 Difference]: Start difference. First operand 193 states and 194 transitions. Second operand has 50 states, 50 states have (on average 1.58) internal successors, (79), 49 states have internal predecessors, (79), 24 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-01-31 18:23:53,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:53,941 INFO L93 Difference]: Finished difference Result 363 states and 366 transitions. [2022-01-31 18:23:53,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-31 18:23:53,955 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.58) internal successors, (79), 49 states have internal predecessors, (79), 24 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 190 [2022-01-31 18:23:53,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:53,956 INFO L225 Difference]: With dead ends: 363 [2022-01-31 18:23:53,956 INFO L226 Difference]: Without dead ends: 198 [2022-01-31 18:23:53,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1123 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1181, Invalid=4075, Unknown=0, NotChecked=0, Total=5256 [2022-01-31 18:23:53,957 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 139 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:53,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 204 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 18:23:53,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-01-31 18:23:53,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 194. [2022-01-31 18:23:53,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 144 states have (on average 1.0138888888888888) internal successors, (146), 145 states have internal predecessors, (146), 25 states have call successors, (25), 25 states have call predecessors, (25), 24 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-31 18:23:53,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 195 transitions. [2022-01-31 18:23:53,993 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 195 transitions. Word has length 190 [2022-01-31 18:23:53,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:53,994 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 195 transitions. [2022-01-31 18:23:53,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.58) internal successors, (79), 49 states have internal predecessors, (79), 24 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-01-31 18:23:53,994 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 195 transitions. [2022-01-31 18:23:53,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-01-31 18:23:53,994 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:53,994 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:53,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-31 18:23:53,995 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:53,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:53,995 INFO L85 PathProgramCache]: Analyzing trace with hash -485245184, now seen corresponding path program 44 times [2022-01-31 18:23:53,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:53,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659619557] [2022-01-31 18:23:53,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:53,996 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:53,996 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:53,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:53,997 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:55,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:55,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:55,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 18:23:55,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:55,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 18:23:55,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:55,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 18:23:55,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:55,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 18:23:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:55,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 18:23:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:55,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-31 18:23:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:55,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 18:23:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:55,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 18:23:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:55,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 18:23:55,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:55,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 18:23:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:55,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 18:23:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:55,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 18:23:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:55,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 18:23:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:55,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 18:23:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:55,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 18:23:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:55,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 18:23:55,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:55,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 18:23:55,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:55,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-01-31 18:23:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:55,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 18:23:55,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:55,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 18:23:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:55,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 18:23:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:55,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 18:23:55,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:55,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:55,115 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:55,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659619557] [2022-01-31 18:23:55,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [659619557] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:55,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:55,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-01-31 18:23:55,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210968026] [2022-01-31 18:23:55,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:55,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-01-31 18:23:55,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:55,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-01-31 18:23:55,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=2652, Unknown=0, NotChecked=0, Total=2756 [2022-01-31 18:23:55,116 INFO L87 Difference]: Start difference. First operand 194 states and 195 transitions. Second operand has 53 states, 52 states have (on average 1.5384615384615385) internal successors, (80), 51 states have internal predecessors, (80), 24 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-01-31 18:23:57,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:57,550 INFO L93 Difference]: Finished difference Result 204 states and 205 transitions. [2022-01-31 18:23:57,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-31 18:23:57,550 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 1.5384615384615385) internal successors, (80), 51 states have internal predecessors, (80), 24 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 191 [2022-01-31 18:23:57,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:57,551 INFO L225 Difference]: With dead ends: 204 [2022-01-31 18:23:57,551 INFO L226 Difference]: Without dead ends: 202 [2022-01-31 18:23:57,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=213, Invalid=5949, Unknown=0, NotChecked=0, Total=6162 [2022-01-31 18:23:57,552 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 36 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 5842 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 5917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 5842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:57,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 916 Invalid, 5917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 5842 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-31 18:23:57,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-01-31 18:23:57,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 201. [2022-01-31 18:23:57,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 149 states have (on average 1.0134228187919463) internal successors, (151), 150 states have internal predecessors, (151), 26 states have call successors, (26), 26 states have call predecessors, (26), 25 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-01-31 18:23:57,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 202 transitions. [2022-01-31 18:23:57,605 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 202 transitions. Word has length 191 [2022-01-31 18:23:57,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:57,606 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 202 transitions. [2022-01-31 18:23:57,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 1.5384615384615385) internal successors, (80), 51 states have internal predecessors, (80), 24 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-01-31 18:23:57,606 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 202 transitions. [2022-01-31 18:23:57,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-01-31 18:23:57,606 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:57,606 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:57,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-31 18:23:57,607 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:57,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:57,607 INFO L85 PathProgramCache]: Analyzing trace with hash -712817454, now seen corresponding path program 45 times [2022-01-31 18:23:57,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:57,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381778687] [2022-01-31 18:23:57,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:57,608 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:57,608 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:57,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:57,609 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:57,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:58,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:23:58,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:58,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 18:23:58,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:58,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 18:23:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:58,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 18:23:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:58,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 18:23:58,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:58,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 18:23:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:58,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-31 18:23:58,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:58,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 18:23:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:58,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 18:23:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:58,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 18:23:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:58,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 18:23:58,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:58,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 18:23:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:58,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 18:23:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:58,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 18:23:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:58,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 18:23:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:58,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 18:23:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:58,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 18:23:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:58,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 18:23:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:58,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-01-31 18:23:58,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:58,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 18:23:58,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:58,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 18:23:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:58,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 18:23:58,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:58,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 18:23:58,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:58,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 18:23:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:23:58,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:23:58,299 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:23:58,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [381778687] [2022-01-31 18:23:58,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [381778687] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:23:58,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:23:58,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 18:23:58,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423001853] [2022-01-31 18:23:58,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:23:58,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 18:23:58,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:23:58,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 18:23:58,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=655, Invalid=1997, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 18:23:58,300 INFO L87 Difference]: Start difference. First operand 201 states and 202 transitions. Second operand has 52 states, 52 states have (on average 1.5769230769230769) internal successors, (82), 51 states have internal predecessors, (82), 25 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-31 18:23:59,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:23:59,093 INFO L93 Difference]: Finished difference Result 378 states and 381 transitions. [2022-01-31 18:23:59,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-31 18:23:59,094 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.5769230769230769) internal successors, (82), 51 states have internal predecessors, (82), 25 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 198 [2022-01-31 18:23:59,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:23:59,095 INFO L225 Difference]: With dead ends: 378 [2022-01-31 18:23:59,095 INFO L226 Difference]: Without dead ends: 206 [2022-01-31 18:23:59,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1220 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1280, Invalid=4420, Unknown=0, NotChecked=0, Total=5700 [2022-01-31 18:23:59,096 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 168 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:23:59,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 155 Invalid, 1271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 18:23:59,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-01-31 18:23:59,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 202. [2022-01-31 18:23:59,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 150 states have (on average 1.0133333333333334) internal successors, (152), 151 states have internal predecessors, (152), 26 states have call successors, (26), 26 states have call predecessors, (26), 25 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-01-31 18:23:59,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 203 transitions. [2022-01-31 18:23:59,136 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 203 transitions. Word has length 198 [2022-01-31 18:23:59,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:23:59,137 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 203 transitions. [2022-01-31 18:23:59,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.5769230769230769) internal successors, (82), 51 states have internal predecessors, (82), 25 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-31 18:23:59,137 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 203 transitions. [2022-01-31 18:23:59,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-01-31 18:23:59,137 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:23:59,138 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:23:59,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-31 18:23:59,138 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:23:59,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:23:59,138 INFO L85 PathProgramCache]: Analyzing trace with hash 195025635, now seen corresponding path program 46 times [2022-01-31 18:23:59,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:23:59,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864636005] [2022-01-31 18:23:59,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:23:59,139 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:23:59,139 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:23:59,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:23:59,140 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:23:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:00,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:24:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:00,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-31 18:24:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:00,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 18:24:00,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:00,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-31 18:24:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:00,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 18:24:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:00,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 18:24:00,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:00,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 18:24:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:00,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 18:24:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:00,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 18:24:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:00,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 18:24:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:00,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 18:24:00,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:00,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 18:24:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:00,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 18:24:00,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:00,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 18:24:00,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:00,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 18:24:00,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:00,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 18:24:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:00,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 18:24:00,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:00,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 18:24:00,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:00,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 18:24:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:00,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 18:24:00,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:00,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 18:24:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:00,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 18:24:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:00,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 18:24:00,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:00,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 18:24:00,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:00,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:24:00,398 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:24:00,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864636005] [2022-01-31 18:24:00,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1864636005] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:24:00,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:24:00,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2022-01-31 18:24:00,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047333193] [2022-01-31 18:24:00,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:24:00,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-01-31 18:24:00,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:24:00,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-01-31 18:24:00,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=2862, Unknown=0, NotChecked=0, Total=2970 [2022-01-31 18:24:00,400 INFO L87 Difference]: Start difference. First operand 202 states and 203 transitions. Second operand has 55 states, 54 states have (on average 1.537037037037037) internal successors, (83), 53 states have internal predecessors, (83), 25 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-31 18:24:03,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:24:03,193 INFO L93 Difference]: Finished difference Result 212 states and 213 transitions. [2022-01-31 18:24:03,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-31 18:24:03,194 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 1.537037037037037) internal successors, (83), 53 states have internal predecessors, (83), 25 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 199 [2022-01-31 18:24:03,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:24:03,194 INFO L225 Difference]: With dead ends: 212 [2022-01-31 18:24:03,194 INFO L226 Difference]: Without dead ends: 210 [2022-01-31 18:24:03,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=221, Invalid=6421, Unknown=0, NotChecked=0, Total=6642 [2022-01-31 18:24:03,196 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 37 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 6310 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 6388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 6310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:24:03,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 978 Invalid, 6388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 6310 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-31 18:24:03,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-01-31 18:24:03,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 209. [2022-01-31 18:24:03,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 155 states have (on average 1.0129032258064516) internal successors, (157), 156 states have internal predecessors, (157), 27 states have call successors, (27), 27 states have call predecessors, (27), 26 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-31 18:24:03,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 210 transitions. [2022-01-31 18:24:03,246 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 210 transitions. Word has length 199 [2022-01-31 18:24:03,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:24:03,246 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 210 transitions. [2022-01-31 18:24:03,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 1.537037037037037) internal successors, (83), 53 states have internal predecessors, (83), 25 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-31 18:24:03,246 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 210 transitions. [2022-01-31 18:24:03,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-01-31 18:24:03,247 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:24:03,247 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:24:03,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-31 18:24:03,247 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:24:03,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:24:03,248 INFO L85 PathProgramCache]: Analyzing trace with hash 333288335, now seen corresponding path program 47 times [2022-01-31 18:24:03,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:24:03,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875663733] [2022-01-31 18:24:03,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:24:03,248 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:24:03,248 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:24:03,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:24:03,250 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:24:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:03,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:24:03,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:03,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-31 18:24:03,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:03,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 18:24:03,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:03,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-31 18:24:03,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:03,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 18:24:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:03,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 18:24:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:03,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 18:24:03,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:03,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 18:24:03,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:03,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 18:24:03,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:03,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 18:24:03,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:03,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 18:24:03,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:03,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 18:24:03,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:03,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 18:24:03,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:03,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 18:24:03,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:03,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 18:24:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:03,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 18:24:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:03,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 18:24:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:03,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 18:24:03,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:03,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 18:24:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:03,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 18:24:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:03,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 18:24:03,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:03,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 18:24:03,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:03,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 18:24:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:03,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 18:24:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:03,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 18:24:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:03,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:24:03,966 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:24:03,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875663733] [2022-01-31 18:24:03,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1875663733] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:24:03,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:24:03,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-01-31 18:24:03,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809757169] [2022-01-31 18:24:03,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:24:03,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-01-31 18:24:03,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:24:03,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-01-31 18:24:03,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=707, Invalid=2155, Unknown=0, NotChecked=0, Total=2862 [2022-01-31 18:24:03,967 INFO L87 Difference]: Start difference. First operand 209 states and 210 transitions. Second operand has 54 states, 54 states have (on average 1.5740740740740742) internal successors, (85), 53 states have internal predecessors, (85), 26 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-01-31 18:24:04,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:24:04,790 INFO L93 Difference]: Finished difference Result 393 states and 396 transitions. [2022-01-31 18:24:04,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-31 18:24:04,790 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.5740740740740742) internal successors, (85), 53 states have internal predecessors, (85), 26 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 206 [2022-01-31 18:24:04,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:24:04,794 INFO L225 Difference]: With dead ends: 393 [2022-01-31 18:24:04,794 INFO L226 Difference]: Without dead ends: 214 [2022-01-31 18:24:04,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1321 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1383, Invalid=4779, Unknown=0, NotChecked=0, Total=6162 [2022-01-31 18:24:04,796 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 167 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 1473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:24:04,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 222 Invalid, 1473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 18:24:04,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-01-31 18:24:04,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 210. [2022-01-31 18:24:04,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 156 states have (on average 1.0128205128205128) internal successors, (158), 157 states have internal predecessors, (158), 27 states have call successors, (27), 27 states have call predecessors, (27), 26 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-31 18:24:04,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 211 transitions. [2022-01-31 18:24:04,844 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 211 transitions. Word has length 206 [2022-01-31 18:24:04,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:24:04,845 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 211 transitions. [2022-01-31 18:24:04,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.5740740740740742) internal successors, (85), 53 states have internal predecessors, (85), 26 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-01-31 18:24:04,845 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 211 transitions. [2022-01-31 18:24:04,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-01-31 18:24:04,845 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:24:04,846 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:24:04,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-31 18:24:04,846 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:24:04,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:24:04,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1603242144, now seen corresponding path program 48 times [2022-01-31 18:24:04,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:24:04,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178295750] [2022-01-31 18:24:04,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:24:04,847 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:24:04,847 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:24:04,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:24:04,848 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:24:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:06,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:24:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:06,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 18:24:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:06,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-31 18:24:06,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:06,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-31 18:24:06,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:06,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-01-31 18:24:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:06,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 18:24:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:06,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 18:24:06,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:06,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 18:24:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:06,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 18:24:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:06,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 18:24:06,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:06,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 18:24:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:06,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 18:24:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:06,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 18:24:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:06,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 18:24:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:06,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 18:24:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:06,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 18:24:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:06,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 18:24:06,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:06,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 18:24:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:06,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 18:24:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:06,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-31 18:24:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:06,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-01-31 18:24:06,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:06,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 18:24:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:06,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 18:24:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:06,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 18:24:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:06,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-01-31 18:24:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:06,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:24:06,336 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:24:06,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178295750] [2022-01-31 18:24:06,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [178295750] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:24:06,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:24:06,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2022-01-31 18:24:06,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610054401] [2022-01-31 18:24:06,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:24:06,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-01-31 18:24:06,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:24:06,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-01-31 18:24:06,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=3080, Unknown=0, NotChecked=0, Total=3192 [2022-01-31 18:24:06,338 INFO L87 Difference]: Start difference. First operand 210 states and 211 transitions. Second operand has 57 states, 56 states have (on average 1.5357142857142858) internal successors, (86), 55 states have internal predecessors, (86), 26 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-01-31 18:24:09,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:24:09,304 INFO L93 Difference]: Finished difference Result 220 states and 221 transitions. [2022-01-31 18:24:09,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-31 18:24:09,304 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 1.5357142857142858) internal successors, (86), 55 states have internal predecessors, (86), 26 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 207 [2022-01-31 18:24:09,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:24:09,305 INFO L225 Difference]: With dead ends: 220 [2022-01-31 18:24:09,305 INFO L226 Difference]: Without dead ends: 218 [2022-01-31 18:24:09,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=229, Invalid=6911, Unknown=0, NotChecked=0, Total=7140 [2022-01-31 18:24:09,306 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 38 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 6796 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 6877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 6796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:24:09,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 1042 Invalid, 6877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 6796 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-31 18:24:09,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-01-31 18:24:09,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 217. [2022-01-31 18:24:09,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 161 states have (on average 1.0124223602484472) internal successors, (163), 162 states have internal predecessors, (163), 28 states have call successors, (28), 28 states have call predecessors, (28), 27 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-31 18:24:09,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 218 transitions. [2022-01-31 18:24:09,359 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 218 transitions. Word has length 207 [2022-01-31 18:24:09,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:24:09,360 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 218 transitions. [2022-01-31 18:24:09,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 1.5357142857142858) internal successors, (86), 55 states have internal predecessors, (86), 26 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-01-31 18:24:09,360 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 218 transitions. [2022-01-31 18:24:09,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-01-31 18:24:09,360 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:24:09,361 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:24:09,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-31 18:24:09,361 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:24:09,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:24:09,361 INFO L85 PathProgramCache]: Analyzing trace with hash 564094770, now seen corresponding path program 49 times [2022-01-31 18:24:09,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:24:09,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [758877681] [2022-01-31 18:24:09,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:24:09,362 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:24:09,362 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:24:09,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:24:09,363 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:24:09,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:10,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:24:10,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:10,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 18:24:10,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:10,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-31 18:24:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:10,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-31 18:24:10,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:10,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-01-31 18:24:10,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:10,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 18:24:10,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:10,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 18:24:10,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:10,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 18:24:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:10,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 18:24:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:10,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 18:24:10,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:10,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 18:24:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:10,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 18:24:10,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:10,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 18:24:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:10,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 18:24:10,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:10,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 18:24:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:10,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 18:24:10,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:10,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 18:24:10,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:10,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 18:24:10,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:10,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 18:24:10,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:10,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-31 18:24:10,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:10,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-01-31 18:24:10,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:10,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 18:24:10,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:10,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 18:24:10,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:10,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 18:24:10,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:10,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-01-31 18:24:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:10,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 18:24:10,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:10,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:24:10,128 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:24:10,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [758877681] [2022-01-31 18:24:10,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [758877681] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:24:10,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:24:10,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2022-01-31 18:24:10,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779884214] [2022-01-31 18:24:10,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:24:10,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-01-31 18:24:10,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:24:10,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-01-31 18:24:10,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=761, Invalid=2319, Unknown=0, NotChecked=0, Total=3080 [2022-01-31 18:24:10,130 INFO L87 Difference]: Start difference. First operand 217 states and 218 transitions. Second operand has 56 states, 56 states have (on average 1.5714285714285714) internal successors, (88), 55 states have internal predecessors, (88), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-31 18:24:11,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:24:11,002 INFO L93 Difference]: Finished difference Result 408 states and 411 transitions. [2022-01-31 18:24:11,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-31 18:24:11,002 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.5714285714285714) internal successors, (88), 55 states have internal predecessors, (88), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 214 [2022-01-31 18:24:11,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:24:11,003 INFO L225 Difference]: With dead ends: 408 [2022-01-31 18:24:11,003 INFO L226 Difference]: Without dead ends: 222 [2022-01-31 18:24:11,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1426 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1490, Invalid=5152, Unknown=0, NotChecked=0, Total=6642 [2022-01-31 18:24:11,004 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 174 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:24:11,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 223 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 954 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 18:24:11,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-01-31 18:24:11,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 218. [2022-01-31 18:24:11,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 162 states have (on average 1.0123456790123457) internal successors, (164), 163 states have internal predecessors, (164), 28 states have call successors, (28), 28 states have call predecessors, (28), 27 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-31 18:24:11,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 219 transitions. [2022-01-31 18:24:11,053 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 219 transitions. Word has length 214 [2022-01-31 18:24:11,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:24:11,054 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 219 transitions. [2022-01-31 18:24:11,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.5714285714285714) internal successors, (88), 55 states have internal predecessors, (88), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-31 18:24:11,054 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 219 transitions. [2022-01-31 18:24:11,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-01-31 18:24:11,055 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:24:11,055 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:24:11,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-01-31 18:24:11,055 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:24:11,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:24:11,056 INFO L85 PathProgramCache]: Analyzing trace with hash -2095596733, now seen corresponding path program 50 times [2022-01-31 18:24:11,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:24:11,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405212579] [2022-01-31 18:24:11,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:24:11,057 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:24:11,057 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:24:11,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:24:11,058 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:24:11,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:12,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:24:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:12,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-31 18:24:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:12,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 18:24:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:12,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 18:24:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:12,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-01-31 18:24:12,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:12,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-31 18:24:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:12,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 18:24:12,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:12,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 18:24:12,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:12,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 18:24:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:12,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 18:24:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:12,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 18:24:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:12,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 18:24:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:12,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 18:24:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:12,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-31 18:24:12,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:12,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:24:12,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:12,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 18:24:12,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:12,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:24:12,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:12,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 18:24:12,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:12,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 18:24:12,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:12,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 18:24:12,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:12,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 18:24:12,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:12,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-01-31 18:24:12,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:12,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 18:24:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:12,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 18:24:12,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:12,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 18:24:12,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:12,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-01-31 18:24:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:12,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:24:12,453 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:24:12,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405212579] [2022-01-31 18:24:12,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [405212579] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:24:12,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:24:12,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2022-01-31 18:24:12,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017871076] [2022-01-31 18:24:12,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:24:12,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-01-31 18:24:12,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:24:12,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-01-31 18:24:12,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=3306, Unknown=0, NotChecked=0, Total=3422 [2022-01-31 18:24:12,455 INFO L87 Difference]: Start difference. First operand 218 states and 219 transitions. Second operand has 59 states, 58 states have (on average 1.5344827586206897) internal successors, (89), 57 states have internal predecessors, (89), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-31 18:24:15,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:24:15,452 INFO L93 Difference]: Finished difference Result 228 states and 229 transitions. [2022-01-31 18:24:15,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-31 18:24:15,452 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 1.5344827586206897) internal successors, (89), 57 states have internal predecessors, (89), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 215 [2022-01-31 18:24:15,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:24:15,453 INFO L225 Difference]: With dead ends: 228 [2022-01-31 18:24:15,453 INFO L226 Difference]: Without dead ends: 226 [2022-01-31 18:24:15,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=237, Invalid=7419, Unknown=0, NotChecked=0, Total=7656 [2022-01-31 18:24:15,454 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 39 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 7238 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 7322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 7238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:24:15,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 1104 Invalid, 7322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 7238 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-31 18:24:15,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-01-31 18:24:15,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 225. [2022-01-31 18:24:15,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 167 states have (on average 1.0119760479041917) internal successors, (169), 168 states have internal predecessors, (169), 29 states have call successors, (29), 29 states have call predecessors, (29), 28 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2022-01-31 18:24:15,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 226 transitions. [2022-01-31 18:24:15,502 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 226 transitions. Word has length 215 [2022-01-31 18:24:15,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:24:15,503 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 226 transitions. [2022-01-31 18:24:15,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 1.5344827586206897) internal successors, (89), 57 states have internal predecessors, (89), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-31 18:24:15,503 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 226 transitions. [2022-01-31 18:24:15,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-01-31 18:24:15,503 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:24:15,504 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:24:15,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-01-31 18:24:15,504 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:24:15,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:24:15,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1808103633, now seen corresponding path program 51 times [2022-01-31 18:24:15,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:24:15,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584405773] [2022-01-31 18:24:15,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:24:15,505 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:24:15,505 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:24:15,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:24:15,506 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:24:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:16,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:24:16,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:16,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-31 18:24:16,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:16,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 18:24:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:16,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 18:24:16,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:16,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-01-31 18:24:16,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:16,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-31 18:24:16,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:16,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 18:24:16,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:16,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 18:24:16,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:16,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 18:24:16,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:16,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 18:24:16,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:16,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 18:24:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:16,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 18:24:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:16,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 18:24:16,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:16,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-31 18:24:16,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:16,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:24:16,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:16,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 18:24:16,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:16,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:24:16,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:16,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 18:24:16,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:16,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 18:24:16,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:16,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 18:24:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:16,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 18:24:16,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:16,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-01-31 18:24:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:16,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 18:24:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:16,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 18:24:16,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:16,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 18:24:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:16,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-01-31 18:24:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:16,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 18:24:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:16,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:24:16,318 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:24:16,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584405773] [2022-01-31 18:24:16,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1584405773] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:24:16,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:24:16,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-01-31 18:24:16,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496546095] [2022-01-31 18:24:16,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:24:16,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-01-31 18:24:16,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:24:16,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-01-31 18:24:16,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=817, Invalid=2489, Unknown=0, NotChecked=0, Total=3306 [2022-01-31 18:24:16,320 INFO L87 Difference]: Start difference. First operand 225 states and 226 transitions. Second operand has 58 states, 58 states have (on average 1.5689655172413792) internal successors, (91), 57 states have internal predecessors, (91), 28 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-31 18:24:17,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:24:17,245 INFO L93 Difference]: Finished difference Result 423 states and 426 transitions. [2022-01-31 18:24:17,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-31 18:24:17,246 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.5689655172413792) internal successors, (91), 57 states have internal predecessors, (91), 28 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 222 [2022-01-31 18:24:17,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:24:17,247 INFO L225 Difference]: With dead ends: 423 [2022-01-31 18:24:17,247 INFO L226 Difference]: Without dead ends: 230 [2022-01-31 18:24:17,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1535 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1601, Invalid=5539, Unknown=0, NotChecked=0, Total=7140 [2022-01-31 18:24:17,248 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 219 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 1544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 500 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:24:17,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 172 Invalid, 1544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [500 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 18:24:17,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-01-31 18:24:17,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 226. [2022-01-31 18:24:17,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 168 states have (on average 1.0119047619047619) internal successors, (170), 169 states have internal predecessors, (170), 29 states have call successors, (29), 29 states have call predecessors, (29), 28 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2022-01-31 18:24:17,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 227 transitions. [2022-01-31 18:24:17,298 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 227 transitions. Word has length 222 [2022-01-31 18:24:17,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:24:17,298 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 227 transitions. [2022-01-31 18:24:17,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.5689655172413792) internal successors, (91), 57 states have internal predecessors, (91), 28 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-31 18:24:17,299 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 227 transitions. [2022-01-31 18:24:17,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-01-31 18:24:17,299 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:24:17,299 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:24:17,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-31 18:24:17,300 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:24:17,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:24:17,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1252670016, now seen corresponding path program 52 times [2022-01-31 18:24:17,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:24:17,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201616967] [2022-01-31 18:24:17,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:24:17,301 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:24:17,301 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:24:17,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:24:17,302 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:24:17,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:18,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:24:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:18,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-31 18:24:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:18,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:24:18,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:18,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 18:24:18,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:18,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 18:24:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:18,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-31 18:24:18,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:18,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-31 18:24:18,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:18,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 18:24:18,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:18,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 18:24:18,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:18,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 18:24:18,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:18,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 18:24:18,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:18,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 18:24:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:18,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 18:24:18,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:18,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 18:24:18,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:18,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-31 18:24:18,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:18,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 18:24:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:18,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 18:24:18,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:18,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 18:24:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:18,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 18:24:18,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:18,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 18:24:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:18,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 18:24:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:18,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 18:24:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:18,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 18:24:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:18,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 18:24:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:18,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 18:24:18,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:18,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 18:24:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:18,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-01-31 18:24:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:18,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:24:18,757 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:24:18,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201616967] [2022-01-31 18:24:18,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1201616967] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:24:18,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:24:18,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2022-01-31 18:24:18,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840685942] [2022-01-31 18:24:18,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:24:18,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-01-31 18:24:18,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:24:18,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-01-31 18:24:18,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=3540, Unknown=0, NotChecked=0, Total=3660 [2022-01-31 18:24:18,758 INFO L87 Difference]: Start difference. First operand 226 states and 227 transitions. Second operand has 61 states, 60 states have (on average 1.5333333333333334) internal successors, (92), 59 states have internal predecessors, (92), 28 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-31 18:24:22,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:24:22,007 INFO L93 Difference]: Finished difference Result 236 states and 237 transitions. [2022-01-31 18:24:22,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-31 18:24:22,007 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 1.5333333333333334) internal successors, (92), 59 states have internal predecessors, (92), 28 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 223 [2022-01-31 18:24:22,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:24:22,008 INFO L225 Difference]: With dead ends: 236 [2022-01-31 18:24:22,008 INFO L226 Difference]: Without dead ends: 234 [2022-01-31 18:24:22,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=245, Invalid=7945, Unknown=0, NotChecked=0, Total=8190 [2022-01-31 18:24:22,009 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 40 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 7758 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 7845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 7758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-31 18:24:22,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 1172 Invalid, 7845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 7758 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-31 18:24:22,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-01-31 18:24:22,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 233. [2022-01-31 18:24:22,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 173 states have (on average 1.0115606936416186) internal successors, (175), 174 states have internal predecessors, (175), 30 states have call successors, (30), 30 states have call predecessors, (30), 29 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-01-31 18:24:22,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 234 transitions. [2022-01-31 18:24:22,076 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 234 transitions. Word has length 223 [2022-01-31 18:24:22,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:24:22,076 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 234 transitions. [2022-01-31 18:24:22,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 1.5333333333333334) internal successors, (92), 59 states have internal predecessors, (92), 28 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-31 18:24:22,077 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 234 transitions. [2022-01-31 18:24:22,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-01-31 18:24:22,077 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:24:22,077 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:24:22,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-01-31 18:24:22,078 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:24:22,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:24:22,078 INFO L85 PathProgramCache]: Analyzing trace with hash 34054546, now seen corresponding path program 53 times [2022-01-31 18:24:22,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:24:22,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971517670] [2022-01-31 18:24:22,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:24:22,079 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:24:22,079 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:24:22,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:24:22,080 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:24:22,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:22,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:24:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:22,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-31 18:24:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:22,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:24:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:22,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 18:24:22,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:22,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 18:24:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:22,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-31 18:24:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:22,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-31 18:24:22,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:22,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 18:24:22,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:22,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 18:24:22,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:22,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 18:24:22,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:22,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 18:24:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:22,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 18:24:22,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:22,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 18:24:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:22,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 18:24:22,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:22,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-31 18:24:22,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:22,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 18:24:22,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:22,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 18:24:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:22,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 18:24:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:22,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 18:24:22,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:22,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 18:24:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:22,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 18:24:22,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:22,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 18:24:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:22,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 18:24:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:22,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 18:24:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:22,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 18:24:22,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:22,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 18:24:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:22,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-01-31 18:24:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:22,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 18:24:22,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:22,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:24:22,931 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:24:22,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971517670] [2022-01-31 18:24:22,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1971517670] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:24:22,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:24:22,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2022-01-31 18:24:22,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572745597] [2022-01-31 18:24:22,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:24:22,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-01-31 18:24:22,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:24:22,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-01-31 18:24:22,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=875, Invalid=2665, Unknown=0, NotChecked=0, Total=3540 [2022-01-31 18:24:22,933 INFO L87 Difference]: Start difference. First operand 233 states and 234 transitions. Second operand has 60 states, 60 states have (on average 1.5666666666666667) internal successors, (94), 59 states have internal predecessors, (94), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-01-31 18:24:23,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:24:23,941 INFO L93 Difference]: Finished difference Result 438 states and 441 transitions. [2022-01-31 18:24:23,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-31 18:24:23,941 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.5666666666666667) internal successors, (94), 59 states have internal predecessors, (94), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 230 [2022-01-31 18:24:23,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:24:23,942 INFO L225 Difference]: With dead ends: 438 [2022-01-31 18:24:23,942 INFO L226 Difference]: Without dead ends: 238 [2022-01-31 18:24:23,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1648 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1716, Invalid=5940, Unknown=0, NotChecked=0, Total=7656 [2022-01-31 18:24:23,944 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 214 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 492 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 1678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 492 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 18:24:23,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 209 Invalid, 1678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [492 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 18:24:23,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-01-31 18:24:24,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 234. [2022-01-31 18:24:24,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 174 states have (on average 1.0114942528735633) internal successors, (176), 175 states have internal predecessors, (176), 30 states have call successors, (30), 30 states have call predecessors, (30), 29 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-01-31 18:24:24,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 235 transitions. [2022-01-31 18:24:24,004 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 235 transitions. Word has length 230 [2022-01-31 18:24:24,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:24:24,004 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 235 transitions. [2022-01-31 18:24:24,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.5666666666666667) internal successors, (94), 59 states have internal predecessors, (94), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-01-31 18:24:24,004 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 235 transitions. [2022-01-31 18:24:24,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-01-31 18:24:24,005 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:24:24,005 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:24:24,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-01-31 18:24:24,005 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:24:24,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:24:24,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1952468061, now seen corresponding path program 54 times [2022-01-31 18:24:24,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:24:24,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332036161] [2022-01-31 18:24:24,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:24:24,008 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:24:24,008 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:24:24,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:24:24,009 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:24:24,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:25,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:24:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:25,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-01-31 18:24:25,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:25,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 18:24:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:25,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-01-31 18:24:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:25,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 18:24:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:25,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 18:24:25,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:25,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 18:24:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:25,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 18:24:25,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:25,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 18:24:25,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:25,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 18:24:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:25,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 18:24:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:25,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 18:24:25,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:25,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 18:24:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:25,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 18:24:25,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:25,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 18:24:25,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:25,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 18:24:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:25,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 18:24:25,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:25,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 18:24:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:25,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 18:24:25,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:25,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 18:24:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:25,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 18:24:25,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:25,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 18:24:25,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:25,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 18:24:25,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:25,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 18:24:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:25,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 18:24:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:25,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 18:24:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:25,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 18:24:25,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:25,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-01-31 18:24:25,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:25,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:24:25,566 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:24:25,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332036161] [2022-01-31 18:24:25,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1332036161] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:24:25,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:24:25,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2022-01-31 18:24:25,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554493308] [2022-01-31 18:24:25,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:24:25,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-01-31 18:24:25,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:24:25,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-01-31 18:24:25,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=3782, Unknown=0, NotChecked=0, Total=3906 [2022-01-31 18:24:25,567 INFO L87 Difference]: Start difference. First operand 234 states and 235 transitions. Second operand has 63 states, 62 states have (on average 1.532258064516129) internal successors, (95), 61 states have internal predecessors, (95), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-01-31 18:24:29,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:24:29,040 INFO L93 Difference]: Finished difference Result 244 states and 245 transitions. [2022-01-31 18:24:29,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-31 18:24:29,040 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 1.532258064516129) internal successors, (95), 61 states have internal predecessors, (95), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 231 [2022-01-31 18:24:29,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:24:29,041 INFO L225 Difference]: With dead ends: 244 [2022-01-31 18:24:29,041 INFO L226 Difference]: Without dead ends: 242 [2022-01-31 18:24:29,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=253, Invalid=8489, Unknown=0, NotChecked=0, Total=8742 [2022-01-31 18:24:29,042 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 41 mSDsluCounter, 1175 mSDsCounter, 0 mSdLazyCounter, 8362 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 8452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 8362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:24:29,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 1246 Invalid, 8452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 8362 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-31 18:24:29,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-01-31 18:24:29,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 241. [2022-01-31 18:24:29,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 179 states have (on average 1.011173184357542) internal successors, (181), 180 states have internal predecessors, (181), 31 states have call successors, (31), 31 states have call predecessors, (31), 30 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2022-01-31 18:24:29,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 242 transitions. [2022-01-31 18:24:29,104 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 242 transitions. Word has length 231 [2022-01-31 18:24:29,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:24:29,105 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 242 transitions. [2022-01-31 18:24:29,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 1.532258064516129) internal successors, (95), 61 states have internal predecessors, (95), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-01-31 18:24:29,105 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 242 transitions. [2022-01-31 18:24:29,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-01-31 18:24:29,105 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:24:29,106 INFO L514 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:24:29,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-01-31 18:24:29,106 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:24:29,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:24:29,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1304191695, now seen corresponding path program 55 times [2022-01-31 18:24:29,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:24:29,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995112285] [2022-01-31 18:24:29,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:24:29,107 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:24:29,107 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:24:29,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:24:29,108 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:24:29,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:29,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:24:29,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:29,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-01-31 18:24:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:29,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 18:24:29,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:30,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-01-31 18:24:30,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:30,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 18:24:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:30,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 18:24:30,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:30,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 18:24:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:30,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 18:24:30,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:30,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 18:24:30,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:30,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 18:24:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:30,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 18:24:30,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:30,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 18:24:30,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:30,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 18:24:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:30,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 18:24:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:30,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 18:24:30,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:30,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 18:24:30,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:30,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 18:24:30,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:30,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 18:24:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:30,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 18:24:30,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:30,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 18:24:30,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:30,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 18:24:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:30,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 18:24:30,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:30,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 18:24:30,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:30,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 18:24:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:30,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 18:24:30,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:30,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 18:24:30,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:30,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 18:24:30,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:30,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-01-31 18:24:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:30,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 18:24:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:30,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:24:30,038 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:24:30,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995112285] [2022-01-31 18:24:30,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [995112285] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:24:30,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:24:30,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-01-31 18:24:30,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885989839] [2022-01-31 18:24:30,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:24:30,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-01-31 18:24:30,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:24:30,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-01-31 18:24:30,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=935, Invalid=2847, Unknown=0, NotChecked=0, Total=3782 [2022-01-31 18:24:30,040 INFO L87 Difference]: Start difference. First operand 241 states and 242 transitions. Second operand has 62 states, 62 states have (on average 1.564516129032258) internal successors, (97), 61 states have internal predecessors, (97), 30 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-01-31 18:24:31,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:24:31,195 INFO L93 Difference]: Finished difference Result 453 states and 456 transitions. [2022-01-31 18:24:31,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-31 18:24:31,195 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.564516129032258) internal successors, (97), 61 states have internal predecessors, (97), 30 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Word has length 238 [2022-01-31 18:24:31,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:24:31,196 INFO L225 Difference]: With dead ends: 453 [2022-01-31 18:24:31,196 INFO L226 Difference]: Without dead ends: 246 [2022-01-31 18:24:31,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1765 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1835, Invalid=6355, Unknown=0, NotChecked=0, Total=8190 [2022-01-31 18:24:31,204 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 207 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 1636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 483 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 18:24:31,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 248 Invalid, 1636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [483 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 18:24:31,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-01-31 18:24:31,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 242. [2022-01-31 18:24:31,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 180 states have (on average 1.011111111111111) internal successors, (182), 181 states have internal predecessors, (182), 31 states have call successors, (31), 31 states have call predecessors, (31), 30 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2022-01-31 18:24:31,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 243 transitions. [2022-01-31 18:24:31,260 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 243 transitions. Word has length 238 [2022-01-31 18:24:31,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:24:31,260 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 243 transitions. [2022-01-31 18:24:31,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.564516129032258) internal successors, (97), 61 states have internal predecessors, (97), 30 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-01-31 18:24:31,261 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 243 transitions. [2022-01-31 18:24:31,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-01-31 18:24:31,261 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:24:31,261 INFO L514 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:24:31,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-01-31 18:24:31,262 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:24:31,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:24:31,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1739445216, now seen corresponding path program 56 times [2022-01-31 18:24:31,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:24:31,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262499912] [2022-01-31 18:24:31,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:24:31,263 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:24:31,263 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:24:31,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:24:31,264 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:24:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:33,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:24:33,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:33,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 18:24:33,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:33,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-31 18:24:33,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:33,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 18:24:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:33,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 18:24:33,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:33,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 18:24:33,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:33,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:24:33,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:33,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:24:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:33,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 18:24:33,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:33,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 18:24:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:33,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 18:24:33,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:33,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 18:24:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:33,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 18:24:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:33,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 18:24:33,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:33,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 18:24:33,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:33,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 18:24:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:33,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-31 18:24:33,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:33,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 18:24:33,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:33,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 18:24:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:33,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 18:24:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:33,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 18:24:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:33,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 18:24:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:33,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 18:24:33,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:33,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-01-31 18:24:33,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:33,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-01-31 18:24:33,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:33,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 18:24:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:33,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 18:24:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:33,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 18:24:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:33,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-01-31 18:24:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:33,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:24:33,105 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:24:33,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262499912] [2022-01-31 18:24:33,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1262499912] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:24:33,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:24:33,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2022-01-31 18:24:33,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289487979] [2022-01-31 18:24:33,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:24:33,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-01-31 18:24:33,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:24:33,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-01-31 18:24:33,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=4032, Unknown=0, NotChecked=0, Total=4160 [2022-01-31 18:24:33,107 INFO L87 Difference]: Start difference. First operand 242 states and 243 transitions. Second operand has 65 states, 64 states have (on average 1.53125) internal successors, (98), 63 states have internal predecessors, (98), 30 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-01-31 18:24:36,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:24:36,906 INFO L93 Difference]: Finished difference Result 252 states and 253 transitions. [2022-01-31 18:24:36,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-31 18:24:36,906 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 1.53125) internal successors, (98), 63 states have internal predecessors, (98), 30 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Word has length 239 [2022-01-31 18:24:36,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:24:36,907 INFO L225 Difference]: With dead ends: 252 [2022-01-31 18:24:36,907 INFO L226 Difference]: Without dead ends: 250 [2022-01-31 18:24:36,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=261, Invalid=9051, Unknown=0, NotChecked=0, Total=9312 [2022-01-31 18:24:36,908 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 42 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 8852 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 8945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 8852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-31 18:24:36,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 1314 Invalid, 8945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 8852 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-01-31 18:24:36,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-01-31 18:24:36,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 249. [2022-01-31 18:24:36,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 185 states have (on average 1.0108108108108107) internal successors, (187), 186 states have internal predecessors, (187), 32 states have call successors, (32), 32 states have call predecessors, (32), 31 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2022-01-31 18:24:36,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 250 transitions. [2022-01-31 18:24:36,976 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 250 transitions. Word has length 239 [2022-01-31 18:24:36,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:24:36,976 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 250 transitions. [2022-01-31 18:24:36,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 64 states have (on average 1.53125) internal successors, (98), 63 states have internal predecessors, (98), 30 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-01-31 18:24:36,977 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 250 transitions. [2022-01-31 18:24:36,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-01-31 18:24:36,977 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:24:36,977 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:24:36,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-01-31 18:24:36,978 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:24:36,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:24:36,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1278342130, now seen corresponding path program 57 times [2022-01-31 18:24:36,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:24:36,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935825367] [2022-01-31 18:24:36,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:24:36,979 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:24:36,979 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:24:36,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:24:36,980 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:24:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:37,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:24:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:37,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 18:24:37,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:37,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-31 18:24:37,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:37,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 18:24:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:37,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 18:24:37,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:37,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 18:24:37,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:37,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:24:37,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:37,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:24:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:37,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 18:24:37,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:37,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 18:24:37,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:37,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 18:24:37,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:37,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 18:24:37,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:37,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 18:24:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:37,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 18:24:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:37,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 18:24:37,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:37,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 18:24:37,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:37,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-31 18:24:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:37,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 18:24:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:37,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 18:24:37,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:37,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 18:24:37,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:37,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 18:24:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:37,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 18:24:37,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:37,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 18:24:37,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:37,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-01-31 18:24:37,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:37,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-01-31 18:24:37,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:37,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 18:24:37,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:37,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 18:24:37,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:37,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 18:24:37,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:37,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-01-31 18:24:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:37,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 18:24:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:37,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:24:37,930 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:24:37,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935825367] [2022-01-31 18:24:37,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1935825367] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:24:37,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:24:37,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2022-01-31 18:24:37,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913813997] [2022-01-31 18:24:37,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:24:37,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-31 18:24:37,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:24:37,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-31 18:24:37,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=997, Invalid=3035, Unknown=0, NotChecked=0, Total=4032 [2022-01-31 18:24:37,932 INFO L87 Difference]: Start difference. First operand 249 states and 250 transitions. Second operand has 64 states, 64 states have (on average 1.5625) internal successors, (100), 63 states have internal predecessors, (100), 31 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-01-31 18:24:38,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:24:38,984 INFO L93 Difference]: Finished difference Result 468 states and 471 transitions. [2022-01-31 18:24:38,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-31 18:24:38,991 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.5625) internal successors, (100), 63 states have internal predecessors, (100), 31 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 246 [2022-01-31 18:24:38,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:24:38,992 INFO L225 Difference]: With dead ends: 468 [2022-01-31 18:24:38,992 INFO L226 Difference]: Without dead ends: 254 [2022-01-31 18:24:38,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1886 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1958, Invalid=6784, Unknown=0, NotChecked=0, Total=8742 [2022-01-31 18:24:38,993 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 198 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 1820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 467 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 18:24:38,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 255 Invalid, 1820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [467 Valid, 1353 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 18:24:38,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-01-31 18:24:39,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 250. [2022-01-31 18:24:39,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 186 states have (on average 1.010752688172043) internal successors, (188), 187 states have internal predecessors, (188), 32 states have call successors, (32), 32 states have call predecessors, (32), 31 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2022-01-31 18:24:39,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 251 transitions. [2022-01-31 18:24:39,063 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 251 transitions. Word has length 246 [2022-01-31 18:24:39,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:24:39,064 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 251 transitions. [2022-01-31 18:24:39,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.5625) internal successors, (100), 63 states have internal predecessors, (100), 31 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-01-31 18:24:39,064 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 251 transitions. [2022-01-31 18:24:39,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-01-31 18:24:39,064 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:24:39,065 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:24:39,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-01-31 18:24:39,065 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:24:39,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:24:39,065 INFO L85 PathProgramCache]: Analyzing trace with hash -223493117, now seen corresponding path program 58 times [2022-01-31 18:24:39,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:24:39,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433881726] [2022-01-31 18:24:39,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:24:39,066 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:24:39,066 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:24:39,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:24:39,068 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:24:39,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:40,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:24:40,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:40,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 18:24:40,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:40,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 18:24:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:40,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 18:24:40,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:40,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 18:24:40,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:40,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-31 18:24:40,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:40,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 18:24:40,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:40,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 18:24:40,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:40,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 18:24:40,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:40,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 18:24:40,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:40,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 18:24:40,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:40,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 18:24:40,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:40,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 18:24:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:40,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 18:24:40,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:40,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 18:24:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:40,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 18:24:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:40,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 18:24:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:40,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-01-31 18:24:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:40,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 18:24:40,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:40,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 18:24:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:40,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 18:24:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:40,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 18:24:40,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:40,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 18:24:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:40,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 18:24:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:40,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-01-31 18:24:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:40,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-01-31 18:24:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:40,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 18:24:40,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:40,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 18:24:40,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:40,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 18:24:40,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:40,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-01-31 18:24:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:40,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:24:40,882 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:24:40,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433881726] [2022-01-31 18:24:40,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1433881726] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:24:40,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:24:40,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67 [2022-01-31 18:24:40,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358819071] [2022-01-31 18:24:40,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:24:40,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-01-31 18:24:40,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:24:40,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-01-31 18:24:40,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=4290, Unknown=0, NotChecked=0, Total=4422 [2022-01-31 18:24:40,883 INFO L87 Difference]: Start difference. First operand 250 states and 251 transitions. Second operand has 67 states, 66 states have (on average 1.5303030303030303) internal successors, (101), 65 states have internal predecessors, (101), 31 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-01-31 18:24:44,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:24:44,834 INFO L93 Difference]: Finished difference Result 260 states and 261 transitions. [2022-01-31 18:24:44,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-31 18:24:44,834 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 1.5303030303030303) internal successors, (101), 65 states have internal predecessors, (101), 31 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 247 [2022-01-31 18:24:44,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:24:44,835 INFO L225 Difference]: With dead ends: 260 [2022-01-31 18:24:44,835 INFO L226 Difference]: Without dead ends: 258 [2022-01-31 18:24:44,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=269, Invalid=9631, Unknown=0, NotChecked=0, Total=9900 [2022-01-31 18:24:44,836 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 43 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 9426 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 9522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 9426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-31 18:24:44,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 1388 Invalid, 9522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 9426 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-01-31 18:24:44,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-01-31 18:24:44,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 257. [2022-01-31 18:24:44,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 191 states have (on average 1.0104712041884816) internal successors, (193), 192 states have internal predecessors, (193), 33 states have call successors, (33), 33 states have call predecessors, (33), 32 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2022-01-31 18:24:44,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 258 transitions. [2022-01-31 18:24:44,912 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 258 transitions. Word has length 247 [2022-01-31 18:24:44,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:24:44,912 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 258 transitions. [2022-01-31 18:24:44,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 1.5303030303030303) internal successors, (101), 65 states have internal predecessors, (101), 31 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-01-31 18:24:44,912 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 258 transitions. [2022-01-31 18:24:44,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-01-31 18:24:44,913 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:24:44,913 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:24:44,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-01-31 18:24:44,913 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:24:44,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:24:44,913 INFO L85 PathProgramCache]: Analyzing trace with hash -2110970257, now seen corresponding path program 59 times [2022-01-31 18:24:44,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:24:44,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676939881] [2022-01-31 18:24:44,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:24:44,914 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:24:44,914 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:24:44,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:24:44,916 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:24:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:45,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:24:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:45,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 18:24:45,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:45,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 18:24:45,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:45,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 18:24:45,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:45,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 18:24:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:45,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-31 18:24:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:45,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 18:24:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:45,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 18:24:45,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:45,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 18:24:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:45,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 18:24:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:45,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 18:24:45,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:45,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 18:24:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:45,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 18:24:45,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:45,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 18:24:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:45,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 18:24:45,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:45,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 18:24:45,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:45,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 18:24:45,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:45,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-01-31 18:24:45,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:45,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 18:24:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:45,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 18:24:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:45,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 18:24:45,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:45,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 18:24:45,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:45,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 18:24:45,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:45,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 18:24:45,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:45,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-01-31 18:24:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:45,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-01-31 18:24:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:45,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 18:24:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:45,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 18:24:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:45,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 18:24:45,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:45,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-01-31 18:24:45,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:45,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 18:24:45,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:45,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:24:45,931 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:24:45,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676939881] [2022-01-31 18:24:45,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1676939881] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:24:45,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:24:45,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2022-01-31 18:24:45,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665658049] [2022-01-31 18:24:45,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:24:45,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-01-31 18:24:45,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:24:45,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-01-31 18:24:45,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1061, Invalid=3229, Unknown=0, NotChecked=0, Total=4290 [2022-01-31 18:24:45,933 INFO L87 Difference]: Start difference. First operand 257 states and 258 transitions. Second operand has 66 states, 66 states have (on average 1.5606060606060606) internal successors, (103), 65 states have internal predecessors, (103), 32 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-01-31 18:24:47,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:24:47,017 INFO L93 Difference]: Finished difference Result 483 states and 486 transitions. [2022-01-31 18:24:47,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-31 18:24:47,018 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.5606060606060606) internal successors, (103), 65 states have internal predecessors, (103), 32 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Word has length 254 [2022-01-31 18:24:47,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:24:47,019 INFO L225 Difference]: With dead ends: 483 [2022-01-31 18:24:47,019 INFO L226 Difference]: Without dead ends: 262 [2022-01-31 18:24:47,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2011 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2085, Invalid=7227, Unknown=0, NotChecked=0, Total=9312 [2022-01-31 18:24:47,020 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 227 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 1791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 18:24:47,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 192 Invalid, 1791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 18:24:47,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-01-31 18:24:47,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 258. [2022-01-31 18:24:47,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 192 states have (on average 1.0104166666666667) internal successors, (194), 193 states have internal predecessors, (194), 33 states have call successors, (33), 33 states have call predecessors, (33), 32 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2022-01-31 18:24:47,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 259 transitions. [2022-01-31 18:24:47,084 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 259 transitions. Word has length 254 [2022-01-31 18:24:47,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:24:47,084 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 259 transitions. [2022-01-31 18:24:47,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.5606060606060606) internal successors, (103), 65 states have internal predecessors, (103), 32 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-01-31 18:24:47,084 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 259 transitions. [2022-01-31 18:24:47,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-01-31 18:24:47,085 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:24:47,085 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:24:47,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-01-31 18:24:47,085 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:24:47,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:24:47,085 INFO L85 PathProgramCache]: Analyzing trace with hash -261859968, now seen corresponding path program 60 times [2022-01-31 18:24:47,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:24:47,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486141760] [2022-01-31 18:24:47,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:24:47,086 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:24:47,086 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:24:47,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:24:47,088 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:24:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:48,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:24:48,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:48,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 18:24:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:48,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-31 18:24:48,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:48,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 18:24:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:48,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 18:24:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:48,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 18:24:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:48,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 18:24:48,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:48,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 18:24:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:48,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 18:24:48,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:48,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 18:24:48,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:48,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 18:24:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:48,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 18:24:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:48,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 18:24:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:48,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 18:24:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:48,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 18:24:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:48,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 18:24:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:48,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 18:24:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:48,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 18:24:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:48,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 18:24:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:48,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 18:24:48,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:48,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 18:24:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:48,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 18:24:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:48,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 18:24:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:48,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 18:24:48,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:48,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 18:24:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:48,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-01-31 18:24:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:48,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-01-31 18:24:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:48,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 18:24:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:48,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 18:24:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:48,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 18:24:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:48,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-01-31 18:24:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:48,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:24:48,933 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:24:48,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486141760] [2022-01-31 18:24:48,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1486141760] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:24:48,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:24:48,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69 [2022-01-31 18:24:48,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058064366] [2022-01-31 18:24:48,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:24:48,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-01-31 18:24:48,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:24:48,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-01-31 18:24:48,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=4556, Unknown=0, NotChecked=0, Total=4692 [2022-01-31 18:24:48,935 INFO L87 Difference]: Start difference. First operand 258 states and 259 transitions. Second operand has 69 states, 68 states have (on average 1.5294117647058822) internal successors, (104), 67 states have internal predecessors, (104), 32 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-01-31 18:24:53,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:24:53,174 INFO L93 Difference]: Finished difference Result 268 states and 269 transitions. [2022-01-31 18:24:53,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-31 18:24:53,174 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 1.5294117647058822) internal successors, (104), 67 states have internal predecessors, (104), 32 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Word has length 255 [2022-01-31 18:24:53,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:24:53,177 INFO L225 Difference]: With dead ends: 268 [2022-01-31 18:24:53,177 INFO L226 Difference]: Without dead ends: 266 [2022-01-31 18:24:53,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=277, Invalid=10229, Unknown=0, NotChecked=0, Total=10506 [2022-01-31 18:24:53,177 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 44 mSDsluCounter, 1387 mSDsCounter, 0 mSdLazyCounter, 10018 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 1464 SdHoareTripleChecker+Invalid, 10117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 10018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:24:53,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 1464 Invalid, 10117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 10018 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-01-31 18:24:53,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-01-31 18:24:53,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 265. [2022-01-31 18:24:53,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 197 states have (on average 1.0101522842639594) internal successors, (199), 198 states have internal predecessors, (199), 34 states have call successors, (34), 34 states have call predecessors, (34), 33 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2022-01-31 18:24:53,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 266 transitions. [2022-01-31 18:24:53,252 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 266 transitions. Word has length 255 [2022-01-31 18:24:53,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:24:53,253 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 266 transitions. [2022-01-31 18:24:53,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 68 states have (on average 1.5294117647058822) internal successors, (104), 67 states have internal predecessors, (104), 32 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-01-31 18:24:53,253 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 266 transitions. [2022-01-31 18:24:53,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-01-31 18:24:53,260 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:24:53,260 INFO L514 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:24:53,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-01-31 18:24:53,260 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:24:53,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:24:53,260 INFO L85 PathProgramCache]: Analyzing trace with hash 252993106, now seen corresponding path program 61 times [2022-01-31 18:24:53,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:24:53,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507609945] [2022-01-31 18:24:53,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:24:53,261 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:24:53,261 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:24:53,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:24:53,271 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:24:53,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:54,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:24:54,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:54,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 18:24:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:54,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-31 18:24:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:54,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 18:24:54,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:54,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 18:24:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:54,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 18:24:54,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:54,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 18:24:54,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:54,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 18:24:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:54,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 18:24:54,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:54,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 18:24:54,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:54,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 18:24:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:54,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 18:24:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:54,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 18:24:54,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:54,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 18:24:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:54,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 18:24:54,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:54,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 18:24:54,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:54,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 18:24:54,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:54,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 18:24:54,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:54,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 18:24:54,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:54,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 18:24:54,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:54,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 18:24:54,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:54,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 18:24:54,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:54,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 18:24:54,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:54,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 18:24:54,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:54,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 18:24:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:54,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-01-31 18:24:54,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:54,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-01-31 18:24:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:54,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 18:24:54,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:54,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 18:24:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:54,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 18:24:54,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:54,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-01-31 18:24:54,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:54,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 18:24:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:54,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:24:54,418 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:24:54,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507609945] [2022-01-31 18:24:54,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1507609945] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:24:54,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:24:54,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2022-01-31 18:24:54,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153297109] [2022-01-31 18:24:54,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:24:54,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-01-31 18:24:54,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:24:54,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-01-31 18:24:54,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1127, Invalid=3429, Unknown=0, NotChecked=0, Total=4556 [2022-01-31 18:24:54,420 INFO L87 Difference]: Start difference. First operand 265 states and 266 transitions. Second operand has 68 states, 68 states have (on average 1.5588235294117647) internal successors, (106), 67 states have internal predecessors, (106), 33 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-01-31 18:24:55,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:24:55,506 INFO L93 Difference]: Finished difference Result 498 states and 501 transitions. [2022-01-31 18:24:55,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-31 18:24:55,507 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.5588235294117647) internal successors, (106), 67 states have internal predecessors, (106), 33 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 262 [2022-01-31 18:24:55,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:24:55,508 INFO L225 Difference]: With dead ends: 498 [2022-01-31 18:24:55,508 INFO L226 Difference]: Without dead ends: 270 [2022-01-31 18:24:55,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2140 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2216, Invalid=7684, Unknown=0, NotChecked=0, Total=9900 [2022-01-31 18:24:55,509 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 256 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 1737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:24:55,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 157 Invalid, 1737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 18:24:55,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-01-31 18:24:55,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 266. [2022-01-31 18:24:55,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 198 states have (on average 1.0101010101010102) internal successors, (200), 199 states have internal predecessors, (200), 34 states have call successors, (34), 34 states have call predecessors, (34), 33 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2022-01-31 18:24:55,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 267 transitions. [2022-01-31 18:24:55,580 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 267 transitions. Word has length 262 [2022-01-31 18:24:55,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:24:55,580 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 267 transitions. [2022-01-31 18:24:55,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.5588235294117647) internal successors, (106), 67 states have internal predecessors, (106), 33 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-01-31 18:24:55,580 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 267 transitions. [2022-01-31 18:24:55,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-01-31 18:24:55,581 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:24:55,581 INFO L514 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:24:55,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-01-31 18:24:55,581 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:24:55,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:24:55,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1086854045, now seen corresponding path program 62 times [2022-01-31 18:24:55,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:24:55,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2091018676] [2022-01-31 18:24:55,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:24:55,582 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:24:55,583 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:24:55,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:24:55,585 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:24:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:57,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:24:57,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:57,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-31 18:24:57,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:57,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-31 18:24:57,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:57,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-01-31 18:24:57,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:57,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 18:24:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:57,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 18:24:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:57,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 18:24:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:57,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 18:24:57,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:57,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 18:24:57,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:57,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 18:24:57,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:57,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 18:24:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:57,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 18:24:57,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:57,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 18:24:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:57,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 18:24:57,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:57,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 18:24:57,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:57,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 18:24:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:57,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 18:24:57,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:57,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 18:24:57,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:57,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-31 18:24:57,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:57,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-01-31 18:24:57,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:57,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 18:24:57,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:57,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 18:24:57,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:57,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 18:24:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:57,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-01-31 18:24:57,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:57,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 18:24:57,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:57,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 18:24:57,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:57,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-01-31 18:24:57,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:57,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-01-31 18:24:57,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:57,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 18:24:57,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:57,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 18:24:57,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:57,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 18:24:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:57,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-01-31 18:24:57,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:24:57,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:24:57,506 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:24:57,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2091018676] [2022-01-31 18:24:57,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2091018676] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:24:57,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:24:57,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2022-01-31 18:24:57,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878831089] [2022-01-31 18:24:57,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:24:57,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-01-31 18:24:57,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:24:57,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-01-31 18:24:57,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=4830, Unknown=0, NotChecked=0, Total=4970 [2022-01-31 18:24:57,507 INFO L87 Difference]: Start difference. First operand 266 states and 267 transitions. Second operand has 71 states, 70 states have (on average 1.5285714285714285) internal successors, (107), 69 states have internal predecessors, (107), 33 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-01-31 18:25:01,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:25:01,963 INFO L93 Difference]: Finished difference Result 276 states and 277 transitions. [2022-01-31 18:25:01,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-31 18:25:01,963 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 1.5285714285714285) internal successors, (107), 69 states have internal predecessors, (107), 33 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 263 [2022-01-31 18:25:01,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:25:01,964 INFO L225 Difference]: With dead ends: 276 [2022-01-31 18:25:01,964 INFO L226 Difference]: Without dead ends: 274 [2022-01-31 18:25:01,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=285, Invalid=10845, Unknown=0, NotChecked=0, Total=11130 [2022-01-31 18:25:01,965 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 45 mSDsluCounter, 1463 mSDsCounter, 0 mSdLazyCounter, 10628 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 10730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 10628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:25:01,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 1542 Invalid, 10730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 10628 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-01-31 18:25:01,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-01-31 18:25:02,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 273. [2022-01-31 18:25:02,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 203 states have (on average 1.0098522167487685) internal successors, (205), 204 states have internal predecessors, (205), 35 states have call successors, (35), 35 states have call predecessors, (35), 34 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2022-01-31 18:25:02,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 274 transitions. [2022-01-31 18:25:02,061 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 274 transitions. Word has length 263 [2022-01-31 18:25:02,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:25:02,061 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 274 transitions. [2022-01-31 18:25:02,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 70 states have (on average 1.5285714285714285) internal successors, (107), 69 states have internal predecessors, (107), 33 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-01-31 18:25:02,062 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 274 transitions. [2022-01-31 18:25:02,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-01-31 18:25:02,062 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:25:02,063 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:25:02,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-01-31 18:25:02,063 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:25:02,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:25:02,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1982410225, now seen corresponding path program 63 times [2022-01-31 18:25:02,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:25:02,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674994735] [2022-01-31 18:25:02,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:25:02,066 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:25:02,066 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:25:02,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:25:02,068 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:25:02,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:03,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:25:03,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:03,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-31 18:25:03,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:03,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-31 18:25:03,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:03,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-01-31 18:25:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:03,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 18:25:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:03,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 18:25:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:03,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 18:25:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:03,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 18:25:03,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:03,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 18:25:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:03,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 18:25:03,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:03,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 18:25:03,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:03,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 18:25:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:03,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 18:25:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:03,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 18:25:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:03,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 18:25:03,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:03,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 18:25:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:03,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 18:25:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:03,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 18:25:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:03,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-31 18:25:03,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:03,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-01-31 18:25:03,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:03,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 18:25:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:03,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 18:25:03,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:03,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 18:25:03,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:03,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-01-31 18:25:03,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:03,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 18:25:03,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:03,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 18:25:03,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:03,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-01-31 18:25:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:03,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-01-31 18:25:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:03,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 18:25:03,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:03,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 18:25:03,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:03,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 18:25:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:03,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-01-31 18:25:03,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:03,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 18:25:03,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:03,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:25:03,206 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:25:03,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674994735] [2022-01-31 18:25:03,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1674994735] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:25:03,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:25:03,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2022-01-31 18:25:03,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36098815] [2022-01-31 18:25:03,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:25:03,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-01-31 18:25:03,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:25:03,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-01-31 18:25:03,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1195, Invalid=3635, Unknown=0, NotChecked=0, Total=4830 [2022-01-31 18:25:03,208 INFO L87 Difference]: Start difference. First operand 273 states and 274 transitions. Second operand has 70 states, 70 states have (on average 1.5571428571428572) internal successors, (109), 69 states have internal predecessors, (109), 34 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-01-31 18:25:04,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:25:04,321 INFO L93 Difference]: Finished difference Result 513 states and 516 transitions. [2022-01-31 18:25:04,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-31 18:25:04,321 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.5571428571428572) internal successors, (109), 69 states have internal predecessors, (109), 34 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Word has length 270 [2022-01-31 18:25:04,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:25:04,322 INFO L225 Difference]: With dead ends: 513 [2022-01-31 18:25:04,322 INFO L226 Difference]: Without dead ends: 278 [2022-01-31 18:25:04,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2273 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2351, Invalid=8155, Unknown=0, NotChecked=0, Total=10506 [2022-01-31 18:25:04,323 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 263 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 605 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 1798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 605 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:25:04,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 272 Invalid, 1798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [605 Valid, 1193 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 18:25:04,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-01-31 18:25:04,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 274. [2022-01-31 18:25:04,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 204 states have (on average 1.0098039215686274) internal successors, (206), 205 states have internal predecessors, (206), 35 states have call successors, (35), 35 states have call predecessors, (35), 34 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2022-01-31 18:25:04,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 275 transitions. [2022-01-31 18:25:04,395 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 275 transitions. Word has length 270 [2022-01-31 18:25:04,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:25:04,395 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 275 transitions. [2022-01-31 18:25:04,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 1.5571428571428572) internal successors, (109), 69 states have internal predecessors, (109), 34 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-01-31 18:25:04,395 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 275 transitions. [2022-01-31 18:25:04,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-01-31 18:25:04,396 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:25:04,396 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:25:04,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-01-31 18:25:04,396 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:25:04,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:25:04,397 INFO L85 PathProgramCache]: Analyzing trace with hash 890748704, now seen corresponding path program 64 times [2022-01-31 18:25:04,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:25:04,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2088728789] [2022-01-31 18:25:04,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:25:04,398 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:25:04,398 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:25:04,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:25:04,399 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:25:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:06,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:25:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:06,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 18:25:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:06,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 18:25:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:06,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-01-31 18:25:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:06,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-31 18:25:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:06,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 18:25:06,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:06,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 18:25:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:06,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 18:25:06,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:06,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 18:25:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:06,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 18:25:06,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:06,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 18:25:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:06,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 18:25:06,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:06,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-31 18:25:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:06,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:25:06,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:06,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 18:25:06,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:06,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:25:06,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:06,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 18:25:06,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:06,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 18:25:06,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:06,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 18:25:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:06,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 18:25:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:06,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-01-31 18:25:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:06,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 18:25:06,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:06,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 18:25:06,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:06,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 18:25:06,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:06,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-01-31 18:25:06,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:06,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 18:25:06,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:06,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 18:25:06,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:06,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-01-31 18:25:06,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:06,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-01-31 18:25:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:06,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 18:25:06,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:06,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 18:25:06,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:06,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 18:25:06,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:06,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-01-31 18:25:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:06,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:25:06,630 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:25:06,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2088728789] [2022-01-31 18:25:06,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2088728789] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:25:06,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:25:06,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73 [2022-01-31 18:25:06,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867425879] [2022-01-31 18:25:06,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:25:06,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-01-31 18:25:06,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:25:06,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-01-31 18:25:06,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=5112, Unknown=0, NotChecked=0, Total=5256 [2022-01-31 18:25:06,631 INFO L87 Difference]: Start difference. First operand 274 states and 275 transitions. Second operand has 73 states, 72 states have (on average 1.5277777777777777) internal successors, (110), 71 states have internal predecessors, (110), 34 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-01-31 18:25:11,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:25:11,468 INFO L93 Difference]: Finished difference Result 284 states and 285 transitions. [2022-01-31 18:25:11,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-31 18:25:11,469 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 72 states have (on average 1.5277777777777777) internal successors, (110), 71 states have internal predecessors, (110), 34 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Word has length 271 [2022-01-31 18:25:11,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:25:11,470 INFO L225 Difference]: With dead ends: 284 [2022-01-31 18:25:11,470 INFO L226 Difference]: Without dead ends: 282 [2022-01-31 18:25:11,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=293, Invalid=11479, Unknown=0, NotChecked=0, Total=11772 [2022-01-31 18:25:11,471 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 46 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 11256 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 11361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 11256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:25:11,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 1622 Invalid, 11361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 11256 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-01-31 18:25:11,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-01-31 18:25:11,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 281. [2022-01-31 18:25:11,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 209 states have (on average 1.0095693779904307) internal successors, (211), 210 states have internal predecessors, (211), 36 states have call successors, (36), 36 states have call predecessors, (36), 35 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2022-01-31 18:25:11,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 282 transitions. [2022-01-31 18:25:11,552 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 282 transitions. Word has length 271 [2022-01-31 18:25:11,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:25:11,552 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 282 transitions. [2022-01-31 18:25:11,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 72 states have (on average 1.5277777777777777) internal successors, (110), 71 states have internal predecessors, (110), 34 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-01-31 18:25:11,552 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 282 transitions. [2022-01-31 18:25:11,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-01-31 18:25:11,553 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:25:11,553 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:25:11,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-01-31 18:25:11,553 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:25:11,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:25:11,554 INFO L85 PathProgramCache]: Analyzing trace with hash -215686990, now seen corresponding path program 65 times [2022-01-31 18:25:11,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:25:11,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293739406] [2022-01-31 18:25:11,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:25:11,554 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:25:11,554 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:25:11,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:25:11,556 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:25:11,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:12,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:25:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:12,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 18:25:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:12,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 18:25:12,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:12,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-01-31 18:25:12,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:12,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-31 18:25:12,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:12,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 18:25:12,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:12,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 18:25:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:12,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 18:25:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:12,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 18:25:12,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:12,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 18:25:12,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:12,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 18:25:12,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:12,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 18:25:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:12,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-31 18:25:12,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:12,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:25:12,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:12,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 18:25:12,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:12,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:25:12,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:12,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 18:25:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:12,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 18:25:12,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:12,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 18:25:12,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:12,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 18:25:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:12,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-01-31 18:25:12,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:12,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 18:25:12,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:12,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 18:25:12,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:12,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 18:25:12,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:12,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-01-31 18:25:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:12,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 18:25:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:12,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 18:25:12,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:12,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-01-31 18:25:12,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:12,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-01-31 18:25:12,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:12,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 18:25:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:12,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 18:25:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:12,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 18:25:12,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:12,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-01-31 18:25:12,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:12,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 18:25:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:12,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:25:12,761 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:25:12,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293739406] [2022-01-31 18:25:12,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [293739406] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:25:12,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:25:12,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2022-01-31 18:25:12,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096585792] [2022-01-31 18:25:12,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:25:12,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-01-31 18:25:12,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:25:12,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-01-31 18:25:12,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1265, Invalid=3847, Unknown=0, NotChecked=0, Total=5112 [2022-01-31 18:25:12,763 INFO L87 Difference]: Start difference. First operand 281 states and 282 transitions. Second operand has 72 states, 72 states have (on average 1.5555555555555556) internal successors, (112), 71 states have internal predecessors, (112), 35 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-01-31 18:25:13,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:25:13,938 INFO L93 Difference]: Finished difference Result 528 states and 531 transitions. [2022-01-31 18:25:13,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-31 18:25:13,938 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.5555555555555556) internal successors, (112), 71 states have internal predecessors, (112), 35 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 278 [2022-01-31 18:25:13,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:25:13,939 INFO L225 Difference]: With dead ends: 528 [2022-01-31 18:25:13,939 INFO L226 Difference]: Without dead ends: 286 [2022-01-31 18:25:13,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2410 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2490, Invalid=8640, Unknown=0, NotChecked=0, Total=11130 [2022-01-31 18:25:13,940 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 288 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 657 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 657 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 18:25:13,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 205 Invalid, 1860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [657 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 18:25:13,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-01-31 18:25:14,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 282. [2022-01-31 18:25:14,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 210 states have (on average 1.0095238095238095) internal successors, (212), 211 states have internal predecessors, (212), 36 states have call successors, (36), 36 states have call predecessors, (36), 35 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2022-01-31 18:25:14,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 283 transitions. [2022-01-31 18:25:14,016 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 283 transitions. Word has length 278 [2022-01-31 18:25:14,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:25:14,016 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 283 transitions. [2022-01-31 18:25:14,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 1.5555555555555556) internal successors, (112), 71 states have internal predecessors, (112), 35 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-01-31 18:25:14,016 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 283 transitions. [2022-01-31 18:25:14,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-01-31 18:25:14,018 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:25:14,018 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:25:14,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-01-31 18:25:14,018 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:25:14,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:25:14,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1850463037, now seen corresponding path program 66 times [2022-01-31 18:25:14,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:25:14,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564403399] [2022-01-31 18:25:14,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:25:14,019 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:25:14,019 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:25:14,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:25:14,021 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:25:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:16,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:25:16,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:16,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:25:16,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:16,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 18:25:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:16,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 18:25:16,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:16,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-31 18:25:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:16,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-31 18:25:16,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:16,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 18:25:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:16,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 18:25:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:16,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 18:25:16,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:16,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 18:25:16,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:16,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 18:25:16,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:16,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 18:25:16,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:16,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 18:25:16,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:16,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-31 18:25:16,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:16,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 18:25:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:16,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 18:25:16,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:16,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 18:25:16,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:16,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 18:25:16,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:16,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 18:25:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:16,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 18:25:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:16,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 18:25:16,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:16,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 18:25:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:16,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 18:25:16,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:16,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 18:25:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:16,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 18:25:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:16,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-01-31 18:25:16,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:16,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 18:25:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:16,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 18:25:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:16,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-01-31 18:25:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:16,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-01-31 18:25:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:16,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 18:25:16,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:16,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 18:25:16,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:16,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 18:25:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:16,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-01-31 18:25:16,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:16,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:25:16,179 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:25:16,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564403399] [2022-01-31 18:25:16,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [564403399] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:25:16,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:25:16,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75 [2022-01-31 18:25:16,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515355071] [2022-01-31 18:25:16,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:25:16,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-01-31 18:25:16,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:25:16,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-01-31 18:25:16,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=5402, Unknown=0, NotChecked=0, Total=5550 [2022-01-31 18:25:16,180 INFO L87 Difference]: Start difference. First operand 282 states and 283 transitions. Second operand has 75 states, 74 states have (on average 1.527027027027027) internal successors, (113), 73 states have internal predecessors, (113), 35 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-01-31 18:25:21,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:25:21,055 INFO L93 Difference]: Finished difference Result 292 states and 293 transitions. [2022-01-31 18:25:21,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-31 18:25:21,055 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 74 states have (on average 1.527027027027027) internal successors, (113), 73 states have internal predecessors, (113), 35 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 279 [2022-01-31 18:25:21,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:25:21,056 INFO L225 Difference]: With dead ends: 292 [2022-01-31 18:25:21,056 INFO L226 Difference]: Without dead ends: 290 [2022-01-31 18:25:21,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=301, Invalid=12131, Unknown=0, NotChecked=0, Total=12432 [2022-01-31 18:25:21,057 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 47 mSDsluCounter, 1621 mSDsCounter, 0 mSdLazyCounter, 11902 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 12010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 11902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-01-31 18:25:21,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 1704 Invalid, 12010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 11902 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-01-31 18:25:21,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-01-31 18:25:21,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 289. [2022-01-31 18:25:21,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 215 states have (on average 1.0093023255813953) internal successors, (217), 216 states have internal predecessors, (217), 37 states have call successors, (37), 37 states have call predecessors, (37), 36 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2022-01-31 18:25:21,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 290 transitions. [2022-01-31 18:25:21,138 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 290 transitions. Word has length 279 [2022-01-31 18:25:21,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:25:21,138 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 290 transitions. [2022-01-31 18:25:21,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 74 states have (on average 1.527027027027027) internal successors, (113), 73 states have internal predecessors, (113), 35 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-01-31 18:25:21,138 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 290 transitions. [2022-01-31 18:25:21,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-01-31 18:25:21,139 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:25:21,139 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:25:21,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-01-31 18:25:21,139 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:25:21,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:25:21,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1937991087, now seen corresponding path program 67 times [2022-01-31 18:25:21,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:25:21,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620065053] [2022-01-31 18:25:21,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:25:21,141 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:25:21,141 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:25:21,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:25:21,142 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:25:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:22,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:25:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:22,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:25:22,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:22,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 18:25:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:22,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 18:25:22,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:22,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-31 18:25:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:22,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-31 18:25:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:22,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 18:25:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:22,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 18:25:22,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:22,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 18:25:22,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:22,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 18:25:22,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:22,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 18:25:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:22,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 18:25:22,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:22,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 18:25:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:22,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-31 18:25:22,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:22,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 18:25:22,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:22,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 18:25:22,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:22,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 18:25:22,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:22,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 18:25:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:22,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 18:25:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:22,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 18:25:22,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:22,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 18:25:22,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:22,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 18:25:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:22,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 18:25:22,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:22,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 18:25:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:22,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 18:25:22,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:22,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-01-31 18:25:22,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:22,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 18:25:22,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:22,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 18:25:22,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:22,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-01-31 18:25:22,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:22,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-01-31 18:25:22,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:22,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 18:25:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:22,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 18:25:22,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:22,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 18:25:22,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:22,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-01-31 18:25:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:22,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 18:25:22,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:22,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:25:22,452 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:25:22,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620065053] [2022-01-31 18:25:22,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1620065053] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:25:22,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:25:22,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74 [2022-01-31 18:25:22,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525391117] [2022-01-31 18:25:22,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:25:22,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-01-31 18:25:22,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:25:22,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-01-31 18:25:22,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1337, Invalid=4065, Unknown=0, NotChecked=0, Total=5402 [2022-01-31 18:25:22,455 INFO L87 Difference]: Start difference. First operand 289 states and 290 transitions. Second operand has 74 states, 74 states have (on average 1.554054054054054) internal successors, (115), 73 states have internal predecessors, (115), 36 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-01-31 18:25:23,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:25:23,680 INFO L93 Difference]: Finished difference Result 543 states and 546 transitions. [2022-01-31 18:25:23,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-31 18:25:23,680 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.554054054054054) internal successors, (115), 73 states have internal predecessors, (115), 36 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Word has length 286 [2022-01-31 18:25:23,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:25:23,681 INFO L225 Difference]: With dead ends: 543 [2022-01-31 18:25:23,681 INFO L226 Difference]: Without dead ends: 294 [2022-01-31 18:25:23,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2551 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2633, Invalid=9139, Unknown=0, NotChecked=0, Total=11772 [2022-01-31 18:25:23,682 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 277 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 642 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 1905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 642 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 18:25:23,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 366 Invalid, 1905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [642 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 18:25:23,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-01-31 18:25:23,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 290. [2022-01-31 18:25:23,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 216 states have (on average 1.0092592592592593) internal successors, (218), 217 states have internal predecessors, (218), 37 states have call successors, (37), 37 states have call predecessors, (37), 36 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2022-01-31 18:25:23,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 291 transitions. [2022-01-31 18:25:23,772 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 291 transitions. Word has length 286 [2022-01-31 18:25:23,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:25:23,772 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 291 transitions. [2022-01-31 18:25:23,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.554054054054054) internal successors, (115), 73 states have internal predecessors, (115), 36 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-01-31 18:25:23,772 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 291 transitions. [2022-01-31 18:25:23,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-01-31 18:25:23,773 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:25:23,773 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:25:23,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-01-31 18:25:23,773 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:25:23,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:25:23,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1016205504, now seen corresponding path program 68 times [2022-01-31 18:25:23,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:25:23,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274893808] [2022-01-31 18:25:23,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:25:23,774 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:25:23,774 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:25:23,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:25:23,776 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:25:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:25,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:25:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:25,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 18:25:25,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:25,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-01-31 18:25:25,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:25,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 18:25:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:25,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 18:25:25,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:25,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 18:25:25,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:25,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 18:25:25,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:25,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 18:25:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:25,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 18:25:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:25,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 18:25:25,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:25,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 18:25:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:25,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 18:25:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:25,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 18:25:25,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:25,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 18:25:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:25,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 18:25:25,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:25,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 18:25:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:25,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 18:25:25,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:25,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 18:25:25,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:25,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 18:25:25,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:25,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 18:25:25,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:25,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 18:25:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:25,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 18:25:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:25,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 18:25:25,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:26,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 18:25:26,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:26,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 18:25:26,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:26,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 18:25:26,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:26,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-01-31 18:25:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:26,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 18:25:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:26,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 18:25:26,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:26,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-01-31 18:25:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:26,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-01-31 18:25:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:26,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 18:25:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:26,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 18:25:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:26,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 18:25:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:26,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-01-31 18:25:26,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:26,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:25:26,015 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:25:26,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274893808] [2022-01-31 18:25:26,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1274893808] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:25:26,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:25:26,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77 [2022-01-31 18:25:26,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395771380] [2022-01-31 18:25:26,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:25:26,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-01-31 18:25:26,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:25:26,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-01-31 18:25:26,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=5700, Unknown=0, NotChecked=0, Total=5852 [2022-01-31 18:25:26,017 INFO L87 Difference]: Start difference. First operand 290 states and 291 transitions. Second operand has 77 states, 76 states have (on average 1.5263157894736843) internal successors, (116), 75 states have internal predecessors, (116), 36 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-01-31 18:25:31,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:25:31,168 INFO L93 Difference]: Finished difference Result 300 states and 301 transitions. [2022-01-31 18:25:31,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-01-31 18:25:31,169 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 76 states have (on average 1.5263157894736843) internal successors, (116), 75 states have internal predecessors, (116), 36 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Word has length 287 [2022-01-31 18:25:31,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:25:31,170 INFO L225 Difference]: With dead ends: 300 [2022-01-31 18:25:31,170 INFO L226 Difference]: Without dead ends: 298 [2022-01-31 18:25:31,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=309, Invalid=12801, Unknown=0, NotChecked=0, Total=13110 [2022-01-31 18:25:31,171 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 48 mSDsluCounter, 1703 mSDsCounter, 0 mSdLazyCounter, 12566 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 12677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 12566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:25:31,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 1788 Invalid, 12677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 12566 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-01-31 18:25:31,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-01-31 18:25:31,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 297. [2022-01-31 18:25:31,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 221 states have (on average 1.009049773755656) internal successors, (223), 222 states have internal predecessors, (223), 38 states have call successors, (38), 38 states have call predecessors, (38), 37 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2022-01-31 18:25:31,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 298 transitions. [2022-01-31 18:25:31,256 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 298 transitions. Word has length 287 [2022-01-31 18:25:31,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:25:31,256 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 298 transitions. [2022-01-31 18:25:31,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 76 states have (on average 1.5263157894736843) internal successors, (116), 75 states have internal predecessors, (116), 36 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-01-31 18:25:31,256 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 298 transitions. [2022-01-31 18:25:31,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-01-31 18:25:31,257 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:25:31,257 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:25:31,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-01-31 18:25:31,257 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:25:31,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:25:31,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1705411822, now seen corresponding path program 69 times [2022-01-31 18:25:31,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:25:31,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183926920] [2022-01-31 18:25:31,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:25:31,258 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:25:31,258 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:25:31,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:25:31,264 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:25:31,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:32,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:25:32,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:32,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 18:25:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:32,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-01-31 18:25:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:32,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 18:25:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:32,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 18:25:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:32,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 18:25:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:32,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 18:25:32,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:32,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 18:25:32,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:32,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 18:25:32,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:32,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 18:25:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:32,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 18:25:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:32,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 18:25:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:32,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 18:25:32,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:32,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 18:25:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:32,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 18:25:32,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:32,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 18:25:32,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:32,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 18:25:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:32,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 18:25:32,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:32,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 18:25:32,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:32,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 18:25:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:32,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 18:25:32,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:32,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 18:25:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:32,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 18:25:32,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:32,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 18:25:32,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:32,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 18:25:32,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:32,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 18:25:32,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:32,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-01-31 18:25:32,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:32,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 18:25:32,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:32,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 18:25:32,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:32,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-01-31 18:25:32,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:32,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-01-31 18:25:32,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:32,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 18:25:32,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:32,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 18:25:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:32,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 18:25:32,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:32,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-01-31 18:25:32,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:32,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 18:25:32,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:32,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:25:32,596 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:25:32,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183926920] [2022-01-31 18:25:32,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1183926920] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:25:32,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:25:32,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76 [2022-01-31 18:25:32,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850036335] [2022-01-31 18:25:32,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:25:32,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-01-31 18:25:32,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:25:32,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-01-31 18:25:32,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1411, Invalid=4289, Unknown=0, NotChecked=0, Total=5700 [2022-01-31 18:25:32,598 INFO L87 Difference]: Start difference. First operand 297 states and 298 transitions. Second operand has 76 states, 76 states have (on average 1.5526315789473684) internal successors, (118), 75 states have internal predecessors, (118), 37 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-01-31 18:25:33,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:25:33,955 INFO L93 Difference]: Finished difference Result 558 states and 561 transitions. [2022-01-31 18:25:33,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-01-31 18:25:33,956 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.5526315789473684) internal successors, (118), 75 states have internal predecessors, (118), 37 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 294 [2022-01-31 18:25:33,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:25:33,957 INFO L225 Difference]: With dead ends: 558 [2022-01-31 18:25:33,957 INFO L226 Difference]: Without dead ends: 302 [2022-01-31 18:25:33,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2696 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2780, Invalid=9652, Unknown=0, NotChecked=0, Total=12432 [2022-01-31 18:25:33,958 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 368 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 1569 mSolverCounterSat, 825 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 2394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 825 IncrementalHoareTripleChecker+Valid, 1569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 18:25:33,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [404 Valid, 177 Invalid, 2394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [825 Valid, 1569 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 18:25:33,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-01-31 18:25:34,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 298. [2022-01-31 18:25:34,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 222 states have (on average 1.009009009009009) internal successors, (224), 223 states have internal predecessors, (224), 38 states have call successors, (38), 38 states have call predecessors, (38), 37 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2022-01-31 18:25:34,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 299 transitions. [2022-01-31 18:25:34,049 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 299 transitions. Word has length 294 [2022-01-31 18:25:34,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:25:34,049 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 299 transitions. [2022-01-31 18:25:34,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 1.5526315789473684) internal successors, (118), 75 states have internal predecessors, (118), 37 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-01-31 18:25:34,049 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 299 transitions. [2022-01-31 18:25:34,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2022-01-31 18:25:34,050 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:25:34,050 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:25:34,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-01-31 18:25:34,050 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:25:34,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:25:34,051 INFO L85 PathProgramCache]: Analyzing trace with hash 68715811, now seen corresponding path program 70 times [2022-01-31 18:25:34,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:25:34,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882220646] [2022-01-31 18:25:34,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:25:34,052 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:25:34,052 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:25:34,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:25:34,053 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:25:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:36,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:25:36,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:36,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-31 18:25:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:36,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 18:25:36,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:36,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 18:25:36,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:36,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 18:25:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:36,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:25:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:36,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:25:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:36,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 18:25:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:36,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 18:25:36,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:36,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 18:25:36,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:36,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 18:25:36,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:36,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 18:25:36,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:36,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 18:25:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:36,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 18:25:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:36,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 18:25:36,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:36,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-31 18:25:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:36,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 18:25:36,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:36,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 18:25:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:36,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 18:25:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:36,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 18:25:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:36,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 18:25:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:36,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 18:25:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:36,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-01-31 18:25:36,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:36,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-01-31 18:25:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:36,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 18:25:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:36,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 18:25:36,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:36,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 18:25:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:36,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-01-31 18:25:36,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:36,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 18:25:36,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:36,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 18:25:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:36,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-01-31 18:25:36,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:36,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-01-31 18:25:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:36,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 18:25:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:36,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 18:25:36,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:36,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 18:25:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:36,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-01-31 18:25:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:36,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:25:36,381 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:25:36,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882220646] [2022-01-31 18:25:36,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1882220646] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:25:36,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:25:36,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [79] imperfect sequences [] total 79 [2022-01-31 18:25:36,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830055921] [2022-01-31 18:25:36,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:25:36,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-01-31 18:25:36,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:25:36,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-01-31 18:25:36,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=6006, Unknown=0, NotChecked=0, Total=6162 [2022-01-31 18:25:36,383 INFO L87 Difference]: Start difference. First operand 298 states and 299 transitions. Second operand has 79 states, 78 states have (on average 1.5256410256410255) internal successors, (119), 77 states have internal predecessors, (119), 37 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-01-31 18:25:41,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:25:41,795 INFO L93 Difference]: Finished difference Result 308 states and 309 transitions. [2022-01-31 18:25:41,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-31 18:25:41,795 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 78 states have (on average 1.5256410256410255) internal successors, (119), 77 states have internal predecessors, (119), 37 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 295 [2022-01-31 18:25:41,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:25:41,796 INFO L225 Difference]: With dead ends: 308 [2022-01-31 18:25:41,796 INFO L226 Difference]: Without dead ends: 306 [2022-01-31 18:25:41,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=317, Invalid=13489, Unknown=0, NotChecked=0, Total=13806 [2022-01-31 18:25:41,797 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 49 mSDsluCounter, 1787 mSDsCounter, 0 mSdLazyCounter, 13248 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 13362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 13248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:25:41,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 1874 Invalid, 13362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 13248 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-01-31 18:25:41,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-01-31 18:25:41,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 305. [2022-01-31 18:25:41,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 227 states have (on average 1.0088105726872247) internal successors, (229), 228 states have internal predecessors, (229), 39 states have call successors, (39), 39 states have call predecessors, (39), 38 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2022-01-31 18:25:41,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 306 transitions. [2022-01-31 18:25:41,886 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 306 transitions. Word has length 295 [2022-01-31 18:25:41,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:25:41,886 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 306 transitions. [2022-01-31 18:25:41,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 78 states have (on average 1.5256410256410255) internal successors, (119), 77 states have internal predecessors, (119), 37 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-01-31 18:25:41,886 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 306 transitions. [2022-01-31 18:25:41,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2022-01-31 18:25:41,887 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:25:41,887 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 37, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:25:41,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-01-31 18:25:41,887 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:25:41,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:25:41,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1535319729, now seen corresponding path program 71 times [2022-01-31 18:25:41,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:25:41,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869946935] [2022-01-31 18:25:41,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:25:41,889 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:25:41,889 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:25:41,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:25:41,890 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:25:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:43,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:25:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:43,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-31 18:25:43,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:43,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 18:25:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:43,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 18:25:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:43,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 18:25:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:43,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:25:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:43,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:25:43,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:43,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 18:25:43,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:43,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 18:25:43,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:43,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 18:25:43,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:43,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 18:25:43,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:43,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 18:25:43,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:43,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 18:25:43,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:43,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 18:25:43,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:43,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 18:25:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:43,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-31 18:25:43,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:43,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 18:25:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:43,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 18:25:43,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:43,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 18:25:43,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:43,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 18:25:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:43,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 18:25:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:43,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 18:25:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:43,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-01-31 18:25:43,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:43,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-01-31 18:25:43,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:43,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 18:25:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:43,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 18:25:43,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:43,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 18:25:43,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:43,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-01-31 18:25:43,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:43,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 18:25:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:43,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 18:25:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:43,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-01-31 18:25:43,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:43,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-01-31 18:25:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:43,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 18:25:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:43,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 18:25:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:43,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 18:25:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:43,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-01-31 18:25:43,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:43,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 18:25:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:43,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:25:43,271 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:25:43,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869946935] [2022-01-31 18:25:43,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [869946935] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:25:43,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:25:43,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78 [2022-01-31 18:25:43,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726669844] [2022-01-31 18:25:43,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:25:43,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-01-31 18:25:43,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:25:43,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-01-31 18:25:43,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=4519, Unknown=0, NotChecked=0, Total=6006 [2022-01-31 18:25:43,274 INFO L87 Difference]: Start difference. First operand 305 states and 306 transitions. Second operand has 78 states, 78 states have (on average 1.5512820512820513) internal successors, (121), 77 states have internal predecessors, (121), 38 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-01-31 18:25:44,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:25:44,724 INFO L93 Difference]: Finished difference Result 573 states and 576 transitions. [2022-01-31 18:25:44,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-31 18:25:44,725 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 1.5512820512820513) internal successors, (121), 77 states have internal predecessors, (121), 38 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 302 [2022-01-31 18:25:44,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:25:44,726 INFO L225 Difference]: With dead ends: 573 [2022-01-31 18:25:44,726 INFO L226 Difference]: Without dead ends: 310 [2022-01-31 18:25:44,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2845 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2931, Invalid=10179, Unknown=0, NotChecked=0, Total=13110 [2022-01-31 18:25:44,727 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 249 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 1900 mSolverCounterSat, 587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 2487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 1900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:25:44,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 310 Invalid, 2487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [587 Valid, 1900 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 18:25:44,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-01-31 18:25:44,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 306. [2022-01-31 18:25:44,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 228 states have (on average 1.0087719298245614) internal successors, (230), 229 states have internal predecessors, (230), 39 states have call successors, (39), 39 states have call predecessors, (39), 38 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2022-01-31 18:25:44,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 307 transitions. [2022-01-31 18:25:44,827 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 307 transitions. Word has length 302 [2022-01-31 18:25:44,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:25:44,827 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 307 transitions. [2022-01-31 18:25:44,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 1.5512820512820513) internal successors, (121), 77 states have internal predecessors, (121), 38 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-01-31 18:25:44,827 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 307 transitions. [2022-01-31 18:25:44,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2022-01-31 18:25:44,828 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:25:44,828 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:25:44,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-01-31 18:25:44,828 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:25:44,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:25:44,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1679641184, now seen corresponding path program 72 times [2022-01-31 18:25:44,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:25:44,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527835828] [2022-01-31 18:25:44,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:25:44,830 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:25:44,830 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:25:44,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:25:44,831 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:25:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:47,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:25:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:47,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 18:25:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:47,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 18:25:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:47,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 18:25:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:47,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-31 18:25:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:47,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 18:25:47,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:47,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 18:25:47,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:47,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 18:25:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:47,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 18:25:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:47,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 18:25:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:47,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 18:25:47,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:47,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 18:25:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:47,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 18:25:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:47,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 18:25:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:47,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 18:25:47,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:47,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 18:25:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:47,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-01-31 18:25:47,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:47,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 18:25:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:47,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 18:25:47,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:47,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 18:25:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:47,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 18:25:47,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:47,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 18:25:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:47,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 18:25:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:47,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-01-31 18:25:47,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:47,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-01-31 18:25:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:47,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 18:25:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:47,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 18:25:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:47,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 18:25:47,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:47,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-01-31 18:25:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:47,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 18:25:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:47,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 18:25:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:47,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-01-31 18:25:47,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:47,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-01-31 18:25:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:47,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 18:25:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:47,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 18:25:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:47,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 18:25:47,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:47,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-01-31 18:25:47,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:47,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:25:47,508 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:25:47,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527835828] [2022-01-31 18:25:47,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1527835828] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:25:47,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:25:47,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [81] imperfect sequences [] total 81 [2022-01-31 18:25:47,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197800759] [2022-01-31 18:25:47,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:25:47,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-01-31 18:25:47,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:25:47,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-01-31 18:25:47,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=6320, Unknown=0, NotChecked=0, Total=6480 [2022-01-31 18:25:47,510 INFO L87 Difference]: Start difference. First operand 306 states and 307 transitions. Second operand has 81 states, 80 states have (on average 1.525) internal successors, (122), 79 states have internal predecessors, (122), 38 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-01-31 18:25:53,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:25:53,424 INFO L93 Difference]: Finished difference Result 316 states and 317 transitions. [2022-01-31 18:25:53,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-01-31 18:25:53,424 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 80 states have (on average 1.525) internal successors, (122), 79 states have internal predecessors, (122), 38 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 303 [2022-01-31 18:25:53,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:25:53,425 INFO L225 Difference]: With dead ends: 316 [2022-01-31 18:25:53,425 INFO L226 Difference]: Without dead ends: 314 [2022-01-31 18:25:53,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=325, Invalid=14195, Unknown=0, NotChecked=0, Total=14520 [2022-01-31 18:25:53,426 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 50 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 13948 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 1962 SdHoareTripleChecker+Invalid, 14065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 13948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:25:53,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 1962 Invalid, 14065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 13948 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-01-31 18:25:53,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-01-31 18:25:53,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 313. [2022-01-31 18:25:53,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 233 states have (on average 1.0085836909871244) internal successors, (235), 234 states have internal predecessors, (235), 40 states have call successors, (40), 40 states have call predecessors, (40), 39 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2022-01-31 18:25:53,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 314 transitions. [2022-01-31 18:25:53,527 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 314 transitions. Word has length 303 [2022-01-31 18:25:53,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:25:53,527 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 314 transitions. [2022-01-31 18:25:53,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 80 states have (on average 1.525) internal successors, (122), 79 states have internal predecessors, (122), 38 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-01-31 18:25:53,527 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 314 transitions. [2022-01-31 18:25:53,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-01-31 18:25:53,528 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:25:53,528 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:25:53,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-01-31 18:25:53,529 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:25:53,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:25:53,529 INFO L85 PathProgramCache]: Analyzing trace with hash 2633074, now seen corresponding path program 73 times [2022-01-31 18:25:53,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:25:53,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759808310] [2022-01-31 18:25:53,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:25:53,530 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:25:53,530 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:25:53,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:25:53,532 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:25:53,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:54,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:25:55,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:55,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 18:25:55,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:55,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 18:25:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:55,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 18:25:55,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:55,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-31 18:25:55,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:55,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 18:25:55,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:55,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 18:25:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:55,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 18:25:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:55,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 18:25:55,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:55,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 18:25:55,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:55,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 18:25:55,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:55,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 18:25:55,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:55,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 18:25:55,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:55,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 18:25:55,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:55,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 18:25:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:55,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 18:25:55,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:55,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-01-31 18:25:55,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:55,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 18:25:55,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:55,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 18:25:55,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:55,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 18:25:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:55,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 18:25:55,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:55,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 18:25:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:55,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 18:25:55,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:55,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-01-31 18:25:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:55,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-01-31 18:25:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:55,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 18:25:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:55,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 18:25:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:55,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 18:25:55,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:55,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-01-31 18:25:55,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:55,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 18:25:55,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:55,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 18:25:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:55,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-01-31 18:25:55,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:55,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-01-31 18:25:55,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:55,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 18:25:55,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:55,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 18:25:55,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:55,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 18:25:55,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:55,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-01-31 18:25:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:55,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 18:25:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:55,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:25:55,059 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:25:55,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759808310] [2022-01-31 18:25:55,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1759808310] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:25:55,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:25:55,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80 [2022-01-31 18:25:55,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348148217] [2022-01-31 18:25:55,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:25:55,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-01-31 18:25:55,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:25:55,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-01-31 18:25:55,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1565, Invalid=4755, Unknown=0, NotChecked=0, Total=6320 [2022-01-31 18:25:55,061 INFO L87 Difference]: Start difference. First operand 313 states and 314 transitions. Second operand has 80 states, 80 states have (on average 1.55) internal successors, (124), 79 states have internal predecessors, (124), 39 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-01-31 18:25:56,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:25:56,439 INFO L93 Difference]: Finished difference Result 588 states and 591 transitions. [2022-01-31 18:25:56,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-01-31 18:25:56,440 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.55) internal successors, (124), 79 states have internal predecessors, (124), 39 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 310 [2022-01-31 18:25:56,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:25:56,441 INFO L225 Difference]: With dead ends: 588 [2022-01-31 18:25:56,441 INFO L226 Difference]: Without dead ends: 318 [2022-01-31 18:25:56,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2998 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3086, Invalid=10720, Unknown=0, NotChecked=0, Total=13806 [2022-01-31 18:25:56,443 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 314 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 727 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 2153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 727 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 18:25:56,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 309 Invalid, 2153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [727 Valid, 1426 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 18:25:56,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-01-31 18:25:56,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 314. [2022-01-31 18:25:56,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 234 states have (on average 1.0085470085470085) internal successors, (236), 235 states have internal predecessors, (236), 40 states have call successors, (40), 40 states have call predecessors, (40), 39 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2022-01-31 18:25:56,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 315 transitions. [2022-01-31 18:25:56,540 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 315 transitions. Word has length 310 [2022-01-31 18:25:56,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:25:56,540 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 315 transitions. [2022-01-31 18:25:56,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 1.55) internal successors, (124), 79 states have internal predecessors, (124), 39 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-01-31 18:25:56,540 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 315 transitions. [2022-01-31 18:25:56,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2022-01-31 18:25:56,541 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:25:56,541 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:25:56,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-01-31 18:25:56,541 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:25:56,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:25:56,542 INFO L85 PathProgramCache]: Analyzing trace with hash 165344643, now seen corresponding path program 74 times [2022-01-31 18:25:56,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:25:56,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503206355] [2022-01-31 18:25:56,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:25:56,543 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:25:56,543 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:25:56,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:25:56,545 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:25:56,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:59,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:25:59,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:59,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-31 18:25:59,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:59,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 18:25:59,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:59,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 18:25:59,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:59,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 18:25:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:59,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 18:25:59,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:59,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 18:25:59,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:59,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 18:25:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:59,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 18:25:59,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:59,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 18:25:59,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:59,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 18:25:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:59,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 18:25:59,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:59,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 18:25:59,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:59,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 18:25:59,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:59,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 18:25:59,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:59,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 18:25:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:59,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 18:25:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:59,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 18:25:59,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:59,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 18:25:59,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:59,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 18:25:59,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:59,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 18:25:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:59,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 18:25:59,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:59,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 18:25:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:59,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 18:25:59,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:59,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-01-31 18:25:59,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:59,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-01-31 18:25:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:59,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 18:25:59,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:59,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 18:25:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:59,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 18:25:59,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:59,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-01-31 18:25:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:59,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 18:25:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:59,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 18:25:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:59,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-01-31 18:25:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:59,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-01-31 18:25:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:59,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 18:25:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:59,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 18:25:59,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:59,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 18:25:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:59,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-01-31 18:25:59,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:25:59,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:25:59,109 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:25:59,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503206355] [2022-01-31 18:25:59,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [503206355] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:25:59,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:25:59,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [83] imperfect sequences [] total 83 [2022-01-31 18:25:59,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987521515] [2022-01-31 18:25:59,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:25:59,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-01-31 18:25:59,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:25:59,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-01-31 18:25:59,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=6642, Unknown=0, NotChecked=0, Total=6806 [2022-01-31 18:25:59,110 INFO L87 Difference]: Start difference. First operand 314 states and 315 transitions. Second operand has 83 states, 82 states have (on average 1.524390243902439) internal successors, (125), 81 states have internal predecessors, (125), 39 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-01-31 18:26:05,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:26:05,028 INFO L93 Difference]: Finished difference Result 324 states and 325 transitions. [2022-01-31 18:26:05,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-31 18:26:05,030 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 82 states have (on average 1.524390243902439) internal successors, (125), 81 states have internal predecessors, (125), 39 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 311 [2022-01-31 18:26:05,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:26:05,030 INFO L225 Difference]: With dead ends: 324 [2022-01-31 18:26:05,030 INFO L226 Difference]: Without dead ends: 322 [2022-01-31 18:26:05,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=333, Invalid=14919, Unknown=0, NotChecked=0, Total=15252 [2022-01-31 18:26:05,031 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 51 mSDsluCounter, 1961 mSDsCounter, 0 mSdLazyCounter, 14666 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 2052 SdHoareTripleChecker+Invalid, 14786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 14666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:26:05,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 2052 Invalid, 14786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 14666 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-01-31 18:26:05,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-01-31 18:26:05,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 321. [2022-01-31 18:26:05,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 239 states have (on average 1.00836820083682) internal successors, (241), 240 states have internal predecessors, (241), 41 states have call successors, (41), 41 states have call predecessors, (41), 40 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2022-01-31 18:26:05,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 322 transitions. [2022-01-31 18:26:05,130 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 322 transitions. Word has length 311 [2022-01-31 18:26:05,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:26:05,130 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 322 transitions. [2022-01-31 18:26:05,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 82 states have (on average 1.524390243902439) internal successors, (125), 81 states have internal predecessors, (125), 39 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-01-31 18:26:05,131 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 322 transitions. [2022-01-31 18:26:05,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-01-31 18:26:05,132 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:26:05,132 INFO L514 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:26:05,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-01-31 18:26:05,132 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:26:05,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:26:05,132 INFO L85 PathProgramCache]: Analyzing trace with hash 2022524143, now seen corresponding path program 75 times [2022-01-31 18:26:05,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:26:05,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526202983] [2022-01-31 18:26:05,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:26:05,133 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:26:05,133 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:26:05,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:26:05,135 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:26:05,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:26:06,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-31 18:26:06,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 18:26:06,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 18:26:06,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 18:26:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 18:26:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 18:26:06,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 18:26:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 18:26:06,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 18:26:06,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 18:26:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 18:26:06,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 18:26:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 18:26:06,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 18:26:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 18:26:06,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 18:26:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 18:26:06,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 18:26:06,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 18:26:06,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 18:26:06,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 18:26:06,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 18:26:06,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 18:26:06,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-01-31 18:26:06,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-01-31 18:26:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 18:26:06,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 18:26:06,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 18:26:06,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-01-31 18:26:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 18:26:06,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 18:26:06,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-01-31 18:26:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-01-31 18:26:06,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 18:26:06,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 18:26:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 18:26:06,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-01-31 18:26:06,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-01-31 18:26:06,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:06,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:26:06,646 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:26:06,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526202983] [2022-01-31 18:26:06,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [526202983] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:26:06,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:26:06,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [82] imperfect sequences [] total 82 [2022-01-31 18:26:06,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401533979] [2022-01-31 18:26:06,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:26:06,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-01-31 18:26:06,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:26:06,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-01-31 18:26:06,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1645, Invalid=4997, Unknown=0, NotChecked=0, Total=6642 [2022-01-31 18:26:06,648 INFO L87 Difference]: Start difference. First operand 321 states and 322 transitions. Second operand has 82 states, 82 states have (on average 1.548780487804878) internal successors, (127), 81 states have internal predecessors, (127), 40 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-01-31 18:26:08,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:26:08,165 INFO L93 Difference]: Finished difference Result 603 states and 606 transitions. [2022-01-31 18:26:08,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-31 18:26:08,165 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 1.548780487804878) internal successors, (127), 81 states have internal predecessors, (127), 40 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Word has length 318 [2022-01-31 18:26:08,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:26:08,166 INFO L225 Difference]: With dead ends: 603 [2022-01-31 18:26:08,166 INFO L226 Difference]: Without dead ends: 326 [2022-01-31 18:26:08,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3155 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3245, Invalid=11275, Unknown=0, NotChecked=0, Total=14520 [2022-01-31 18:26:08,168 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 323 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 1856 mSolverCounterSat, 744 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 2600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 744 IncrementalHoareTripleChecker+Valid, 1856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:26:08,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 322 Invalid, 2600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [744 Valid, 1856 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 18:26:08,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-01-31 18:26:08,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 322. [2022-01-31 18:26:08,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 240 states have (on average 1.0083333333333333) internal successors, (242), 241 states have internal predecessors, (242), 41 states have call successors, (41), 41 states have call predecessors, (41), 40 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2022-01-31 18:26:08,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 323 transitions. [2022-01-31 18:26:08,277 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 323 transitions. Word has length 318 [2022-01-31 18:26:08,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:26:08,277 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 323 transitions. [2022-01-31 18:26:08,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 1.548780487804878) internal successors, (127), 81 states have internal predecessors, (127), 40 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-01-31 18:26:08,277 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 323 transitions. [2022-01-31 18:26:08,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2022-01-31 18:26:08,278 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:26:08,278 INFO L514 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:26:08,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-01-31 18:26:08,278 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:26:08,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:26:08,279 INFO L85 PathProgramCache]: Analyzing trace with hash -8164352, now seen corresponding path program 76 times [2022-01-31 18:26:08,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:26:08,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268975957] [2022-01-31 18:26:08,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:26:08,280 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:26:08,280 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:26:08,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:26:08,282 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:26:08,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:26:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-31 18:26:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-01-31 18:26:10,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 18:26:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 18:26:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 18:26:10,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 18:26:10,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 18:26:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 18:26:10,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 18:26:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 18:26:10,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 18:26:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 18:26:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 18:26:10,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 18:26:10,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 18:26:10,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 18:26:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-31 18:26:10,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-01-31 18:26:10,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 18:26:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 18:26:10,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 18:26:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-01-31 18:26:10,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 18:26:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 18:26:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-01-31 18:26:10,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-01-31 18:26:10,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 18:26:10,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 18:26:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 18:26:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-01-31 18:26:10,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 18:26:10,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 18:26:10,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-01-31 18:26:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-01-31 18:26:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 18:26:10,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 18:26:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 18:26:10,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-01-31 18:26:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:10,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:26:10,952 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:26:10,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268975957] [2022-01-31 18:26:10,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [268975957] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:26:10,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:26:10,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [] total 85 [2022-01-31 18:26:10,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815813449] [2022-01-31 18:26:10,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:26:10,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2022-01-31 18:26:10,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:26:10,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2022-01-31 18:26:10,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=6972, Unknown=0, NotChecked=0, Total=7140 [2022-01-31 18:26:10,953 INFO L87 Difference]: Start difference. First operand 322 states and 323 transitions. Second operand has 85 states, 84 states have (on average 1.5238095238095237) internal successors, (128), 83 states have internal predecessors, (128), 40 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-01-31 18:26:17,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:26:17,238 INFO L93 Difference]: Finished difference Result 332 states and 333 transitions. [2022-01-31 18:26:17,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-01-31 18:26:17,238 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 84 states have (on average 1.5238095238095237) internal successors, (128), 83 states have internal predecessors, (128), 40 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Word has length 319 [2022-01-31 18:26:17,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:26:17,239 INFO L225 Difference]: With dead ends: 332 [2022-01-31 18:26:17,239 INFO L226 Difference]: Without dead ends: 330 [2022-01-31 18:26:17,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=341, Invalid=15661, Unknown=0, NotChecked=0, Total=16002 [2022-01-31 18:26:17,240 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 52 mSDsluCounter, 2055 mSDsCounter, 0 mSdLazyCounter, 15490 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 2148 SdHoareTripleChecker+Invalid, 15613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 15490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-01-31 18:26:17,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 2148 Invalid, 15613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 15490 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-01-31 18:26:17,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-01-31 18:26:17,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 329. [2022-01-31 18:26:17,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 245 states have (on average 1.0081632653061225) internal successors, (247), 246 states have internal predecessors, (247), 42 states have call successors, (42), 42 states have call predecessors, (42), 41 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2022-01-31 18:26:17,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 330 transitions. [2022-01-31 18:26:17,353 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 330 transitions. Word has length 319 [2022-01-31 18:26:17,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:26:17,353 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 330 transitions. [2022-01-31 18:26:17,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 84 states have (on average 1.5238095238095237) internal successors, (128), 83 states have internal predecessors, (128), 40 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-01-31 18:26:17,354 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 330 transitions. [2022-01-31 18:26:17,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-01-31 18:26:17,355 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:26:17,355 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:26:17,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-01-31 18:26:17,355 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:26:17,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:26:17,355 INFO L85 PathProgramCache]: Analyzing trace with hash -645466158, now seen corresponding path program 77 times [2022-01-31 18:26:17,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:26:17,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619685659] [2022-01-31 18:26:17,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:26:17,356 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:26:17,356 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:26:17,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:26:17,358 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:26:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:26:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-31 18:26:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-01-31 18:26:18,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 18:26:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 18:26:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 18:26:18,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 18:26:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 18:26:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 18:26:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 18:26:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 18:26:18,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 18:26:18,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 18:26:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 18:26:18,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 18:26:18,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 18:26:18,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 18:26:18,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-31 18:26:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-01-31 18:26:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 18:26:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 18:26:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 18:26:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-01-31 18:26:18,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 18:26:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 18:26:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-01-31 18:26:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-01-31 18:26:18,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 18:26:18,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 18:26:18,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 18:26:18,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-01-31 18:26:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 18:26:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 18:26:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-01-31 18:26:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-01-31 18:26:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 18:26:18,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 18:26:18,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 18:26:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-01-31 18:26:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-01-31 18:26:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:18,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:26:18,996 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:26:18,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619685659] [2022-01-31 18:26:18,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [619685659] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:26:18,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:26:18,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84 [2022-01-31 18:26:18,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322879261] [2022-01-31 18:26:18,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:26:18,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-01-31 18:26:18,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:26:18,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-01-31 18:26:18,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1727, Invalid=5245, Unknown=0, NotChecked=0, Total=6972 [2022-01-31 18:26:18,998 INFO L87 Difference]: Start difference. First operand 329 states and 330 transitions. Second operand has 84 states, 84 states have (on average 1.5476190476190477) internal successors, (130), 83 states have internal predecessors, (130), 41 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-01-31 18:26:20,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:26:20,483 INFO L93 Difference]: Finished difference Result 618 states and 621 transitions. [2022-01-31 18:26:20,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-01-31 18:26:20,484 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.5476190476190477) internal successors, (130), 83 states have internal predecessors, (130), 41 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 326 [2022-01-31 18:26:20,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:26:20,485 INFO L225 Difference]: With dead ends: 618 [2022-01-31 18:26:20,485 INFO L226 Difference]: Without dead ends: 334 [2022-01-31 18:26:20,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3316 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3408, Invalid=11844, Unknown=0, NotChecked=0, Total=15252 [2022-01-31 18:26:20,487 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 312 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 1682 mSolverCounterSat, 725 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 2407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 725 IncrementalHoareTripleChecker+Valid, 1682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 18:26:20,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 237 Invalid, 2407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [725 Valid, 1682 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 18:26:20,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-01-31 18:26:20,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 330. [2022-01-31 18:26:20,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 246 states have (on average 1.008130081300813) internal successors, (248), 247 states have internal predecessors, (248), 42 states have call successors, (42), 42 states have call predecessors, (42), 41 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2022-01-31 18:26:20,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 331 transitions. [2022-01-31 18:26:20,593 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 331 transitions. Word has length 326 [2022-01-31 18:26:20,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:26:20,593 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 331 transitions. [2022-01-31 18:26:20,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 1.5476190476190477) internal successors, (130), 83 states have internal predecessors, (130), 41 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-01-31 18:26:20,594 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 331 transitions. [2022-01-31 18:26:20,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-01-31 18:26:20,595 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:26:20,595 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:26:20,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-01-31 18:26:20,595 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:26:20,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:26:20,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1341226467, now seen corresponding path program 78 times [2022-01-31 18:26:20,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:26:20,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1256409622] [2022-01-31 18:26:20,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:26:20,596 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:26:20,596 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:26:20,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:26:20,598 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:26:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:26:23,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 18:26:23,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-01-31 18:26:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-31 18:26:23,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 18:26:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 18:26:23,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 18:26:23,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 18:26:23,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 18:26:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 18:26:23,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 18:26:23,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-31 18:26:23,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:26:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 18:26:23,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:26:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 18:26:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 18:26:23,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 18:26:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 18:26:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-01-31 18:26:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 18:26:23,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 18:26:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 18:26:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-01-31 18:26:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 18:26:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 18:26:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-01-31 18:26:23,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-01-31 18:26:23,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 18:26:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 18:26:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 18:26:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-01-31 18:26:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 18:26:23,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 18:26:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-01-31 18:26:23,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-01-31 18:26:23,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 18:26:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 18:26:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 18:26:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-01-31 18:26:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:23,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:26:23,368 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:26:23,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1256409622] [2022-01-31 18:26:23,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1256409622] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:26:23,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:26:23,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [87] imperfect sequences [] total 87 [2022-01-31 18:26:23,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611597612] [2022-01-31 18:26:23,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:26:23,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-01-31 18:26:23,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:26:23,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-01-31 18:26:23,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=7310, Unknown=0, NotChecked=0, Total=7482 [2022-01-31 18:26:23,370 INFO L87 Difference]: Start difference. First operand 330 states and 331 transitions. Second operand has 87 states, 86 states have (on average 1.5232558139534884) internal successors, (131), 85 states have internal predecessors, (131), 41 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-01-31 18:26:29,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:26:29,916 INFO L93 Difference]: Finished difference Result 340 states and 341 transitions. [2022-01-31 18:26:29,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-31 18:26:29,916 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 86 states have (on average 1.5232558139534884) internal successors, (131), 85 states have internal predecessors, (131), 41 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 327 [2022-01-31 18:26:29,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:26:29,917 INFO L225 Difference]: With dead ends: 340 [2022-01-31 18:26:29,917 INFO L226 Difference]: Without dead ends: 338 [2022-01-31 18:26:29,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 946 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=349, Invalid=16421, Unknown=0, NotChecked=0, Total=16770 [2022-01-31 18:26:29,918 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 53 mSDsluCounter, 2147 mSDsCounter, 0 mSdLazyCounter, 16246 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 2242 SdHoareTripleChecker+Invalid, 16372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 16246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:26:29,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 2242 Invalid, 16372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 16246 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-01-31 18:26:29,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-01-31 18:26:30,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 337. [2022-01-31 18:26:30,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 251 states have (on average 1.0079681274900398) internal successors, (253), 252 states have internal predecessors, (253), 43 states have call successors, (43), 43 states have call predecessors, (43), 42 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2022-01-31 18:26:30,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 338 transitions. [2022-01-31 18:26:30,038 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 338 transitions. Word has length 327 [2022-01-31 18:26:30,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:26:30,039 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 338 transitions. [2022-01-31 18:26:30,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 86 states have (on average 1.5232558139534884) internal successors, (131), 85 states have internal predecessors, (131), 41 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-01-31 18:26:30,039 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 338 transitions. [2022-01-31 18:26:30,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-01-31 18:26:30,040 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:26:30,040 INFO L514 BasicCegarLoop]: trace histogram [41, 41, 41, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:26:30,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-01-31 18:26:30,040 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:26:30,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:26:30,040 INFO L85 PathProgramCache]: Analyzing trace with hash -503410545, now seen corresponding path program 79 times [2022-01-31 18:26:30,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:26:30,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219500467] [2022-01-31 18:26:30,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:26:30,041 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:26:30,041 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:26:30,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:26:30,045 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:26:30,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:26:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 18:26:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-01-31 18:26:31,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-31 18:26:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 18:26:31,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 18:26:31,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 18:26:31,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 18:26:31,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 18:26:31,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 18:26:31,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 18:26:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-31 18:26:31,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:26:31,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 18:26:31,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:26:31,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 18:26:31,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 18:26:31,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 18:26:31,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 18:26:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-01-31 18:26:31,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 18:26:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 18:26:31,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 18:26:31,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-01-31 18:26:31,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 18:26:31,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 18:26:31,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-01-31 18:26:31,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-01-31 18:26:31,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 18:26:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 18:26:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 18:26:31,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-01-31 18:26:31,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 18:26:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 18:26:31,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-01-31 18:26:31,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-01-31 18:26:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 18:26:31,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 18:26:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 18:26:31,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-01-31 18:26:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-01-31 18:26:31,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:31,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:26:31,721 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:26:31,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219500467] [2022-01-31 18:26:31,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1219500467] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:26:31,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:26:31,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [86] imperfect sequences [] total 86 [2022-01-31 18:26:31,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086657692] [2022-01-31 18:26:31,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:26:31,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-01-31 18:26:31,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:26:31,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-01-31 18:26:31,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1811, Invalid=5499, Unknown=0, NotChecked=0, Total=7310 [2022-01-31 18:26:31,723 INFO L87 Difference]: Start difference. First operand 337 states and 338 transitions. Second operand has 86 states, 86 states have (on average 1.5465116279069768) internal successors, (133), 85 states have internal predecessors, (133), 42 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-01-31 18:26:33,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:26:33,273 INFO L93 Difference]: Finished difference Result 633 states and 636 transitions. [2022-01-31 18:26:33,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-31 18:26:33,273 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 1.5465116279069768) internal successors, (133), 85 states have internal predecessors, (133), 42 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Word has length 334 [2022-01-31 18:26:33,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:26:33,274 INFO L225 Difference]: With dead ends: 633 [2022-01-31 18:26:33,274 INFO L226 Difference]: Without dead ends: 342 [2022-01-31 18:26:33,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3481 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3575, Invalid=12427, Unknown=0, NotChecked=0, Total=16002 [2022-01-31 18:26:33,276 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 283 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 1777 mSolverCounterSat, 670 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 2447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 670 IncrementalHoareTripleChecker+Valid, 1777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 18:26:33,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 334 Invalid, 2447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [670 Valid, 1777 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 18:26:33,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2022-01-31 18:26:33,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 338. [2022-01-31 18:26:33,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 252 states have (on average 1.007936507936508) internal successors, (254), 253 states have internal predecessors, (254), 43 states have call successors, (43), 43 states have call predecessors, (43), 42 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2022-01-31 18:26:33,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 339 transitions. [2022-01-31 18:26:33,393 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 339 transitions. Word has length 334 [2022-01-31 18:26:33,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:26:33,393 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 339 transitions. [2022-01-31 18:26:33,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 1.5465116279069768) internal successors, (133), 85 states have internal predecessors, (133), 42 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-01-31 18:26:33,393 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 339 transitions. [2022-01-31 18:26:33,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2022-01-31 18:26:33,394 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:26:33,394 INFO L514 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:26:33,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-01-31 18:26:33,395 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:26:33,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:26:33,395 INFO L85 PathProgramCache]: Analyzing trace with hash -116492896, now seen corresponding path program 80 times [2022-01-31 18:26:33,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:26:33,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263127656] [2022-01-31 18:26:33,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:26:33,396 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:26:33,396 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:26:33,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:26:33,398 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:26:33,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:26:36,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 18:26:36,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 18:26:36,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-31 18:26:36,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-31 18:26:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 18:26:36,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 18:26:36,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 18:26:36,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 18:26:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 18:26:36,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 18:26:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 18:26:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-31 18:26:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 18:26:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 18:26:36,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 18:26:36,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 18:26:36,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 18:26:36,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 18:26:36,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 18:26:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 18:26:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 18:26:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 18:26:36,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 18:26:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-01-31 18:26:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 18:26:36,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 18:26:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-01-31 18:26:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-01-31 18:26:36,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 18:26:36,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 18:26:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 18:26:36,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-01-31 18:26:36,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 18:26:36,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 18:26:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-01-31 18:26:36,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-01-31 18:26:36,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 18:26:36,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 18:26:36,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 18:26:36,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-01-31 18:26:36,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:36,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:26:36,594 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:26:36,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263127656] [2022-01-31 18:26:36,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [263127656] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:26:36,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:26:36,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [89] imperfect sequences [] total 89 [2022-01-31 18:26:36,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078028526] [2022-01-31 18:26:36,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:26:36,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-01-31 18:26:36,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:26:36,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-01-31 18:26:36,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=7656, Unknown=0, NotChecked=0, Total=7832 [2022-01-31 18:26:36,596 INFO L87 Difference]: Start difference. First operand 338 states and 339 transitions. Second operand has 89 states, 88 states have (on average 1.5227272727272727) internal successors, (134), 87 states have internal predecessors, (134), 42 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-01-31 18:26:43,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:26:43,664 INFO L93 Difference]: Finished difference Result 348 states and 349 transitions. [2022-01-31 18:26:43,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-01-31 18:26:43,665 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 88 states have (on average 1.5227272727272727) internal successors, (134), 87 states have internal predecessors, (134), 42 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Word has length 335 [2022-01-31 18:26:43,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:26:43,666 INFO L225 Difference]: With dead ends: 348 [2022-01-31 18:26:43,666 INFO L226 Difference]: Without dead ends: 346 [2022-01-31 18:26:43,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=357, Invalid=17199, Unknown=0, NotChecked=0, Total=17556 [2022-01-31 18:26:43,667 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 54 mSDsluCounter, 2241 mSDsCounter, 0 mSdLazyCounter, 17020 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 2338 SdHoareTripleChecker+Invalid, 17149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 17020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:26:43,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 2338 Invalid, 17149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 17020 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-01-31 18:26:43,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-01-31 18:26:43,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 345. [2022-01-31 18:26:43,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 257 states have (on average 1.0077821011673151) internal successors, (259), 258 states have internal predecessors, (259), 44 states have call successors, (44), 44 states have call predecessors, (44), 43 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2022-01-31 18:26:43,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 346 transitions. [2022-01-31 18:26:43,790 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 346 transitions. Word has length 335 [2022-01-31 18:26:43,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:26:43,790 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 346 transitions. [2022-01-31 18:26:43,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 88 states have (on average 1.5227272727272727) internal successors, (134), 87 states have internal predecessors, (134), 42 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-01-31 18:26:43,790 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 346 transitions. [2022-01-31 18:26:43,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2022-01-31 18:26:43,791 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:26:43,791 INFO L514 BasicCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:26:43,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-01-31 18:26:43,792 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:26:43,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:26:43,792 INFO L85 PathProgramCache]: Analyzing trace with hash -185869774, now seen corresponding path program 81 times [2022-01-31 18:26:43,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:26:43,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332425471] [2022-01-31 18:26:43,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:26:43,793 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:26:43,793 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:26:43,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:26:43,795 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:26:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:26:45,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 18:26:45,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 18:26:45,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-31 18:26:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-31 18:26:45,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 18:26:45,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 18:26:45,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 18:26:45,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 18:26:45,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 18:26:45,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 18:26:45,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 18:26:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-31 18:26:45,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 18:26:45,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 18:26:45,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 18:26:45,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 18:26:45,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 18:26:45,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 18:26:45,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 18:26:45,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 18:26:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 18:26:45,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 18:26:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 18:26:45,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-01-31 18:26:45,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 18:26:45,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 18:26:45,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-01-31 18:26:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-01-31 18:26:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 18:26:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 18:26:45,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 18:26:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-01-31 18:26:45,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 18:26:45,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 18:26:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-01-31 18:26:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-01-31 18:26:45,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 18:26:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 18:26:45,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 18:26:45,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-01-31 18:26:45,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-01-31 18:26:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:45,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:26:45,516 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:26:45,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332425471] [2022-01-31 18:26:45,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1332425471] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:26:45,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:26:45,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [88] imperfect sequences [] total 88 [2022-01-31 18:26:45,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010460419] [2022-01-31 18:26:45,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:26:45,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-01-31 18:26:45,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:26:45,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-01-31 18:26:45,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1897, Invalid=5759, Unknown=0, NotChecked=0, Total=7656 [2022-01-31 18:26:45,517 INFO L87 Difference]: Start difference. First operand 345 states and 346 transitions. Second operand has 88 states, 88 states have (on average 1.5454545454545454) internal successors, (136), 87 states have internal predecessors, (136), 43 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-01-31 18:26:47,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:26:47,109 INFO L93 Difference]: Finished difference Result 648 states and 651 transitions. [2022-01-31 18:26:47,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-01-31 18:26:47,109 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 1.5454545454545454) internal successors, (136), 87 states have internal predecessors, (136), 43 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 342 [2022-01-31 18:26:47,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:26:47,111 INFO L225 Difference]: With dead ends: 648 [2022-01-31 18:26:47,111 INFO L226 Difference]: Without dead ends: 350 [2022-01-31 18:26:47,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3650 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3746, Invalid=13024, Unknown=0, NotChecked=0, Total=16770 [2022-01-31 18:26:47,113 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 408 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 1625 mSolverCounterSat, 932 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 2557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 932 IncrementalHoareTripleChecker+Valid, 1625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:26:47,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 247 Invalid, 2557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [932 Valid, 1625 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 18:26:47,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-01-31 18:26:47,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 346. [2022-01-31 18:26:47,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 258 states have (on average 1.0077519379844961) internal successors, (260), 259 states have internal predecessors, (260), 44 states have call successors, (44), 44 states have call predecessors, (44), 43 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2022-01-31 18:26:47,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 347 transitions. [2022-01-31 18:26:47,237 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 347 transitions. Word has length 342 [2022-01-31 18:26:47,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:26:47,237 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 347 transitions. [2022-01-31 18:26:47,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 1.5454545454545454) internal successors, (136), 87 states have internal predecessors, (136), 43 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-01-31 18:26:47,238 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 347 transitions. [2022-01-31 18:26:47,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2022-01-31 18:26:47,239 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:26:47,239 INFO L514 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:26:47,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-01-31 18:26:47,239 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:26:47,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:26:47,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1663951293, now seen corresponding path program 82 times [2022-01-31 18:26:47,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:26:47,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136853212] [2022-01-31 18:26:47,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:26:47,240 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:26:47,240 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:26:47,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:26:47,242 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:26:47,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:26:50,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-01-31 18:26:50,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 18:26:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 18:26:50,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 18:26:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 18:26:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 18:26:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 18:26:50,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 18:26:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 18:26:50,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 18:26:50,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 18:26:50,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 18:26:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 18:26:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 18:26:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 18:26:50,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 18:26:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 18:26:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 18:26:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 18:26:50,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 18:26:50,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 18:26:50,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 18:26:50,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 18:26:50,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 18:26:50,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-01-31 18:26:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 18:26:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 18:26:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-01-31 18:26:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-01-31 18:26:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 18:26:50,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 18:26:50,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 18:26:50,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-01-31 18:26:50,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 18:26:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 18:26:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-01-31 18:26:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-01-31 18:26:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 18:26:50,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 18:26:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 18:26:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-01-31 18:26:50,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:50,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:26:50,264 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:26:50,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136853212] [2022-01-31 18:26:50,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [136853212] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:26:50,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:26:50,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [91] imperfect sequences [] total 91 [2022-01-31 18:26:50,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626507827] [2022-01-31 18:26:50,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:26:50,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-01-31 18:26:50,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:26:50,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-01-31 18:26:50,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=8010, Unknown=0, NotChecked=0, Total=8190 [2022-01-31 18:26:50,266 INFO L87 Difference]: Start difference. First operand 346 states and 347 transitions. Second operand has 91 states, 90 states have (on average 1.5222222222222221) internal successors, (137), 89 states have internal predecessors, (137), 43 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-01-31 18:26:57,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:26:57,623 INFO L93 Difference]: Finished difference Result 356 states and 357 transitions. [2022-01-31 18:26:57,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-01-31 18:26:57,624 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 90 states have (on average 1.5222222222222221) internal successors, (137), 89 states have internal predecessors, (137), 43 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 343 [2022-01-31 18:26:57,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:26:57,627 INFO L225 Difference]: With dead ends: 356 [2022-01-31 18:26:57,627 INFO L226 Difference]: Without dead ends: 354 [2022-01-31 18:26:57,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=365, Invalid=17995, Unknown=0, NotChecked=0, Total=18360 [2022-01-31 18:26:57,628 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 55 mSDsluCounter, 2337 mSDsCounter, 0 mSdLazyCounter, 17812 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 2436 SdHoareTripleChecker+Invalid, 17944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 17812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-01-31 18:26:57,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 2436 Invalid, 17944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 17812 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-01-31 18:26:57,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-01-31 18:26:57,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 353. [2022-01-31 18:26:57,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 263 states have (on average 1.0076045627376427) internal successors, (265), 264 states have internal predecessors, (265), 45 states have call successors, (45), 45 states have call predecessors, (45), 44 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2022-01-31 18:26:57,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 354 transitions. [2022-01-31 18:26:57,757 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 354 transitions. Word has length 343 [2022-01-31 18:26:57,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:26:57,758 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 354 transitions. [2022-01-31 18:26:57,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 90 states have (on average 1.5222222222222221) internal successors, (137), 89 states have internal predecessors, (137), 43 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-01-31 18:26:57,758 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 354 transitions. [2022-01-31 18:26:57,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2022-01-31 18:26:57,759 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:26:57,759 INFO L514 BasicCegarLoop]: trace histogram [43, 43, 43, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:26:57,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-01-31 18:26:57,759 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:26:57,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:26:57,759 INFO L85 PathProgramCache]: Analyzing trace with hash 161137711, now seen corresponding path program 83 times [2022-01-31 18:26:57,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:26:57,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411486182] [2022-01-31 18:26:57,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:26:57,760 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:26:57,760 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:26:57,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:26:57,763 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:26:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:26:59,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-01-31 18:26:59,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 18:26:59,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 18:26:59,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 18:26:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 18:26:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 18:26:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 18:26:59,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 18:26:59,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 18:26:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 18:26:59,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 18:26:59,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 18:26:59,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 18:26:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 18:26:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 18:26:59,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 18:26:59,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 18:26:59,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 18:26:59,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 18:26:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 18:26:59,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 18:26:59,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 18:26:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 18:26:59,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 18:26:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-01-31 18:26:59,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 18:26:59,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 18:26:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-01-31 18:26:59,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-01-31 18:26:59,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 18:26:59,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 18:26:59,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 18:26:59,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-01-31 18:26:59,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 18:26:59,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 18:26:59,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-01-31 18:26:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-01-31 18:26:59,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 18:26:59,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 18:26:59,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 18:26:59,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-01-31 18:26:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-01-31 18:26:59,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:26:59,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:26:59,597 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:26:59,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411486182] [2022-01-31 18:26:59,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [411486182] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:26:59,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:26:59,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [90] imperfect sequences [] total 90 [2022-01-31 18:26:59,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843869268] [2022-01-31 18:26:59,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:26:59,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-01-31 18:26:59,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:26:59,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-01-31 18:26:59,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1985, Invalid=6025, Unknown=0, NotChecked=0, Total=8010 [2022-01-31 18:26:59,599 INFO L87 Difference]: Start difference. First operand 353 states and 354 transitions. Second operand has 90 states, 90 states have (on average 1.5444444444444445) internal successors, (139), 89 states have internal predecessors, (139), 44 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-01-31 18:27:01,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:27:01,278 INFO L93 Difference]: Finished difference Result 663 states and 666 transitions. [2022-01-31 18:27:01,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-01-31 18:27:01,278 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 1.5444444444444445) internal successors, (139), 89 states have internal predecessors, (139), 44 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Word has length 350 [2022-01-31 18:27:01,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:27:01,279 INFO L225 Difference]: With dead ends: 663 [2022-01-31 18:27:01,279 INFO L226 Difference]: Without dead ends: 358 [2022-01-31 18:27:01,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3823 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3921, Invalid=13635, Unknown=0, NotChecked=0, Total=17556 [2022-01-31 18:27:01,281 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 285 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 1839 mSolverCounterSat, 680 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 2519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 680 IncrementalHoareTripleChecker+Valid, 1839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:27:01,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 530 Invalid, 2519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [680 Valid, 1839 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 18:27:01,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-01-31 18:27:01,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 354. [2022-01-31 18:27:01,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 264 states have (on average 1.0075757575757576) internal successors, (266), 265 states have internal predecessors, (266), 45 states have call successors, (45), 45 states have call predecessors, (45), 44 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2022-01-31 18:27:01,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 355 transitions. [2022-01-31 18:27:01,410 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 355 transitions. Word has length 350 [2022-01-31 18:27:01,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:27:01,410 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 355 transitions. [2022-01-31 18:27:01,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 1.5444444444444445) internal successors, (139), 89 states have internal predecessors, (139), 44 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-01-31 18:27:01,410 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 355 transitions. [2022-01-31 18:27:01,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2022-01-31 18:27:01,411 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:27:01,411 INFO L514 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:27:01,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-01-31 18:27:01,411 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:27:01,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:27:01,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1904764736, now seen corresponding path program 84 times [2022-01-31 18:27:01,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:27:01,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448725519] [2022-01-31 18:27:01,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:27:01,413 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:27:01,413 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:27:01,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:27:01,415 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:27:01,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:27:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 18:27:04,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 18:27:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 18:27:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:27:04,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:27:04,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 18:27:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 18:27:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 18:27:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 18:27:04,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 18:27:04,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 18:27:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 18:27:04,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 18:27:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-31 18:27:04,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 18:27:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 18:27:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 18:27:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 18:27:04,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 18:27:04,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 18:27:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-01-31 18:27:04,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-01-31 18:27:04,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 18:27:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 18:27:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 18:27:04,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-01-31 18:27:04,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 18:27:04,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 18:27:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-01-31 18:27:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-01-31 18:27:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 18:27:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 18:27:04,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 18:27:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-01-31 18:27:04,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 18:27:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 18:27:04,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-01-31 18:27:04,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-01-31 18:27:04,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 18:27:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 18:27:04,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 18:27:04,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-01-31 18:27:04,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:04,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:27:04,556 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:27:04,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448725519] [2022-01-31 18:27:04,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1448725519] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:27:04,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:27:04,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [93] imperfect sequences [] total 93 [2022-01-31 18:27:04,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018382312] [2022-01-31 18:27:04,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:27:04,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-01-31 18:27:04,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:27:04,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-01-31 18:27:04,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=8372, Unknown=0, NotChecked=0, Total=8556 [2022-01-31 18:27:04,557 INFO L87 Difference]: Start difference. First operand 354 states and 355 transitions. Second operand has 93 states, 92 states have (on average 1.5217391304347827) internal successors, (140), 91 states have internal predecessors, (140), 44 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-01-31 18:27:12,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:27:12,060 INFO L93 Difference]: Finished difference Result 364 states and 365 transitions. [2022-01-31 18:27:12,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-01-31 18:27:12,060 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 92 states have (on average 1.5217391304347827) internal successors, (140), 91 states have internal predecessors, (140), 44 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Word has length 351 [2022-01-31 18:27:12,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:27:12,061 INFO L225 Difference]: With dead ends: 364 [2022-01-31 18:27:12,061 INFO L226 Difference]: Without dead ends: 362 [2022-01-31 18:27:12,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=373, Invalid=18809, Unknown=0, NotChecked=0, Total=19182 [2022-01-31 18:27:12,063 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 56 mSDsluCounter, 2431 mSDsCounter, 0 mSdLazyCounter, 18526 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 2532 SdHoareTripleChecker+Invalid, 18661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 18526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:27:12,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 2532 Invalid, 18661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 18526 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-01-31 18:27:12,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-01-31 18:27:12,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 361. [2022-01-31 18:27:12,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 269 states have (on average 1.0074349442379182) internal successors, (271), 270 states have internal predecessors, (271), 46 states have call successors, (46), 46 states have call predecessors, (46), 45 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2022-01-31 18:27:12,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 362 transitions. [2022-01-31 18:27:12,202 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 362 transitions. Word has length 351 [2022-01-31 18:27:12,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:27:12,202 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 362 transitions. [2022-01-31 18:27:12,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 92 states have (on average 1.5217391304347827) internal successors, (140), 91 states have internal predecessors, (140), 44 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-01-31 18:27:12,202 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 362 transitions. [2022-01-31 18:27:12,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2022-01-31 18:27:12,203 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:27:12,203 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 44, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:27:12,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-01-31 18:27:12,204 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:27:12,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:27:12,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1706240878, now seen corresponding path program 85 times [2022-01-31 18:27:12,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:27:12,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621477827] [2022-01-31 18:27:12,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:27:12,205 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:27:12,205 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:27:12,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:27:12,207 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:27:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:27:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 18:27:14,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 18:27:14,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 18:27:14,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:27:14,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:27:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 18:27:14,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 18:27:14,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 18:27:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 18:27:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 18:27:14,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 18:27:14,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 18:27:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 18:27:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-31 18:27:14,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 18:27:14,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 18:27:14,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 18:27:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 18:27:14,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 18:27:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 18:27:14,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-01-31 18:27:14,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-01-31 18:27:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 18:27:14,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 18:27:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 18:27:14,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-01-31 18:27:14,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 18:27:14,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 18:27:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-01-31 18:27:14,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-01-31 18:27:14,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 18:27:14,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 18:27:14,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 18:27:14,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-01-31 18:27:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 18:27:14,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 18:27:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-01-31 18:27:14,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-01-31 18:27:14,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 18:27:14,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 18:27:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 18:27:14,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-01-31 18:27:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-01-31 18:27:14,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:14,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:27:14,102 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:27:14,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621477827] [2022-01-31 18:27:14,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [621477827] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:27:14,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:27:14,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [92] imperfect sequences [] total 92 [2022-01-31 18:27:14,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259875677] [2022-01-31 18:27:14,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:27:14,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-01-31 18:27:14,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:27:14,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-01-31 18:27:14,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2075, Invalid=6297, Unknown=0, NotChecked=0, Total=8372 [2022-01-31 18:27:14,105 INFO L87 Difference]: Start difference. First operand 361 states and 362 transitions. Second operand has 92 states, 92 states have (on average 1.5434782608695652) internal successors, (142), 91 states have internal predecessors, (142), 45 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-01-31 18:27:15,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:27:15,737 INFO L93 Difference]: Finished difference Result 678 states and 681 transitions. [2022-01-31 18:27:15,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-01-31 18:27:15,738 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 1.5434782608695652) internal successors, (142), 91 states have internal predecessors, (142), 45 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 358 [2022-01-31 18:27:15,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:27:15,739 INFO L225 Difference]: With dead ends: 678 [2022-01-31 18:27:15,739 INFO L226 Difference]: Without dead ends: 366 [2022-01-31 18:27:15,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4000 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=4100, Invalid=14260, Unknown=0, NotChecked=0, Total=18360 [2022-01-31 18:27:15,741 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 336 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 1591 mSolverCounterSat, 788 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 2379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 788 IncrementalHoareTripleChecker+Valid, 1591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 18:27:15,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [380 Valid, 301 Invalid, 2379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [788 Valid, 1591 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 18:27:15,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-01-31 18:27:15,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 362. [2022-01-31 18:27:15,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 270 states have (on average 1.0074074074074073) internal successors, (272), 271 states have internal predecessors, (272), 46 states have call successors, (46), 46 states have call predecessors, (46), 45 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2022-01-31 18:27:15,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 363 transitions. [2022-01-31 18:27:15,874 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 363 transitions. Word has length 358 [2022-01-31 18:27:15,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:27:15,875 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 363 transitions. [2022-01-31 18:27:15,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 1.5434782608695652) internal successors, (142), 91 states have internal predecessors, (142), 45 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-01-31 18:27:15,875 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 363 transitions. [2022-01-31 18:27:15,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-01-31 18:27:15,876 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:27:15,876 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:27:15,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-01-31 18:27:15,876 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:27:15,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:27:15,876 INFO L85 PathProgramCache]: Analyzing trace with hash 812832419, now seen corresponding path program 86 times [2022-01-31 18:27:15,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:27:15,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15766397] [2022-01-31 18:27:15,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:27:15,877 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:27:15,877 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:27:15,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:27:15,880 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:27:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:27:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 18:27:19,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 18:27:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-31 18:27:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 18:27:19,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 18:27:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 18:27:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 18:27:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 18:27:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 18:27:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 18:27:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 18:27:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 18:27:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 18:27:19,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 18:27:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-01-31 18:27:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 18:27:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 18:27:19,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 18:27:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 18:27:19,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 18:27:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 18:27:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-01-31 18:27:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-01-31 18:27:19,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 18:27:19,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 18:27:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 18:27:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-01-31 18:27:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 18:27:19,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 18:27:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-01-31 18:27:19,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-01-31 18:27:19,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 18:27:19,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 18:27:19,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 18:27:19,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-01-31 18:27:19,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 18:27:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 18:27:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-01-31 18:27:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-01-31 18:27:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 18:27:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 18:27:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 18:27:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-01-31 18:27:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:19,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:27:19,220 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:27:19,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15766397] [2022-01-31 18:27:19,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [15766397] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:27:19,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:27:19,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [95] imperfect sequences [] total 95 [2022-01-31 18:27:19,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288273372] [2022-01-31 18:27:19,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:27:19,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-01-31 18:27:19,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:27:19,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-01-31 18:27:19,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=8742, Unknown=0, NotChecked=0, Total=8930 [2022-01-31 18:27:19,221 INFO L87 Difference]: Start difference. First operand 362 states and 363 transitions. Second operand has 95 states, 94 states have (on average 1.5212765957446808) internal successors, (143), 93 states have internal predecessors, (143), 45 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-01-31 18:27:27,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:27:27,097 INFO L93 Difference]: Finished difference Result 372 states and 373 transitions. [2022-01-31 18:27:27,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-01-31 18:27:27,097 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 94 states have (on average 1.5212765957446808) internal successors, (143), 93 states have internal predecessors, (143), 45 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 359 [2022-01-31 18:27:27,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:27:27,098 INFO L225 Difference]: With dead ends: 372 [2022-01-31 18:27:27,098 INFO L226 Difference]: Without dead ends: 370 [2022-01-31 18:27:27,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1128 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=381, Invalid=19641, Unknown=0, NotChecked=0, Total=20022 [2022-01-31 18:27:27,100 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 57 mSDsluCounter, 2535 mSDsCounter, 0 mSdLazyCounter, 19450 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 2638 SdHoareTripleChecker+Invalid, 19588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 19450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:27:27,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 2638 Invalid, 19588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 19450 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-01-31 18:27:27,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-01-31 18:27:27,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 369. [2022-01-31 18:27:27,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 275 states have (on average 1.0072727272727273) internal successors, (277), 276 states have internal predecessors, (277), 47 states have call successors, (47), 47 states have call predecessors, (47), 46 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2022-01-31 18:27:27,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 370 transitions. [2022-01-31 18:27:27,246 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 370 transitions. Word has length 359 [2022-01-31 18:27:27,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:27:27,246 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 370 transitions. [2022-01-31 18:27:27,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 94 states have (on average 1.5212765957446808) internal successors, (143), 93 states have internal predecessors, (143), 45 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-01-31 18:27:27,247 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 370 transitions. [2022-01-31 18:27:27,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-01-31 18:27:27,248 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:27:27,248 INFO L514 BasicCegarLoop]: trace histogram [45, 45, 45, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:27:27,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-01-31 18:27:27,248 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:27:27,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:27:27,248 INFO L85 PathProgramCache]: Analyzing trace with hash -290725937, now seen corresponding path program 87 times [2022-01-31 18:27:27,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:27:27,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154666175] [2022-01-31 18:27:27,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:27:27,251 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:27:27,251 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:27:27,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:27:27,254 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:27:27,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:27:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 18:27:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 18:27:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-31 18:27:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 18:27:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 18:27:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 18:27:29,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 18:27:29,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 18:27:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 18:27:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 18:27:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 18:27:29,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 18:27:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 18:27:29,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 18:27:29,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-01-31 18:27:29,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 18:27:29,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 18:27:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 18:27:29,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 18:27:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 18:27:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 18:27:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-01-31 18:27:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-01-31 18:27:29,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 18:27:29,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 18:27:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 18:27:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-01-31 18:27:29,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 18:27:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 18:27:29,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-01-31 18:27:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-01-31 18:27:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 18:27:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 18:27:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 18:27:29,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-01-31 18:27:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 18:27:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 18:27:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-01-31 18:27:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-01-31 18:27:29,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 18:27:29,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 18:27:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 18:27:29,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-01-31 18:27:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-01-31 18:27:29,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:29,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:27:29,220 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:27:29,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154666175] [2022-01-31 18:27:29,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [154666175] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:27:29,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:27:29,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [94] imperfect sequences [] total 94 [2022-01-31 18:27:29,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633118070] [2022-01-31 18:27:29,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:27:29,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-01-31 18:27:29,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:27:29,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-01-31 18:27:29,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2167, Invalid=6575, Unknown=0, NotChecked=0, Total=8742 [2022-01-31 18:27:29,223 INFO L87 Difference]: Start difference. First operand 369 states and 370 transitions. Second operand has 94 states, 94 states have (on average 1.5425531914893618) internal successors, (145), 93 states have internal predecessors, (145), 46 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-01-31 18:27:30,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:27:30,973 INFO L93 Difference]: Finished difference Result 693 states and 696 transitions. [2022-01-31 18:27:30,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-01-31 18:27:30,973 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 1.5425531914893618) internal successors, (145), 93 states have internal predecessors, (145), 46 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Word has length 366 [2022-01-31 18:27:30,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:27:30,974 INFO L225 Difference]: With dead ends: 693 [2022-01-31 18:27:30,974 INFO L226 Difference]: Without dead ends: 374 [2022-01-31 18:27:30,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4181 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=4283, Invalid=14899, Unknown=0, NotChecked=0, Total=19182 [2022-01-31 18:27:30,976 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 329 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 1808 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 2587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 1808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:27:30,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 358 Invalid, 2587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [779 Valid, 1808 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 18:27:30,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-01-31 18:27:31,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 370. [2022-01-31 18:27:31,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 276 states have (on average 1.0072463768115942) internal successors, (278), 277 states have internal predecessors, (278), 47 states have call successors, (47), 47 states have call predecessors, (47), 46 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2022-01-31 18:27:31,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 371 transitions. [2022-01-31 18:27:31,119 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 371 transitions. Word has length 366 [2022-01-31 18:27:31,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:27:31,119 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 371 transitions. [2022-01-31 18:27:31,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 1.5425531914893618) internal successors, (145), 93 states have internal predecessors, (145), 46 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-01-31 18:27:31,119 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 371 transitions. [2022-01-31 18:27:31,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2022-01-31 18:27:31,120 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:27:31,120 INFO L514 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:27:31,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-01-31 18:27:31,121 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:27:31,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:27:31,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1614495968, now seen corresponding path program 88 times [2022-01-31 18:27:31,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:27:31,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563876788] [2022-01-31 18:27:31,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:27:31,122 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:27:31,122 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:27:31,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:27:31,124 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:27:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:27:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 18:27:34,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 18:27:34,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 18:27:34,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 18:27:34,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 18:27:34,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 18:27:34,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 18:27:34,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 18:27:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 18:27:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 18:27:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 18:27:34,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 18:27:34,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 18:27:34,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 18:27:34,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 18:27:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 18:27:34,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 18:27:34,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 18:27:34,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 18:27:34,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 18:27:34,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 18:27:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 18:27:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-01-31 18:27:34,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-01-31 18:27:34,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 18:27:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 18:27:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 18:27:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-01-31 18:27:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 18:27:34,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 18:27:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-01-31 18:27:34,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-01-31 18:27:34,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 18:27:34,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 18:27:34,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 18:27:34,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-01-31 18:27:34,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-01-31 18:27:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 18:27:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-01-31 18:27:34,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-01-31 18:27:34,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 18:27:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 18:27:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 18:27:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-01-31 18:27:34,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:34,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:27:34,864 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:27:34,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563876788] [2022-01-31 18:27:34,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1563876788] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:27:34,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:27:34,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [97] imperfect sequences [] total 97 [2022-01-31 18:27:34,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58878737] [2022-01-31 18:27:34,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:27:34,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-01-31 18:27:34,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:27:34,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-01-31 18:27:34,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=9120, Unknown=0, NotChecked=0, Total=9312 [2022-01-31 18:27:34,866 INFO L87 Difference]: Start difference. First operand 370 states and 371 transitions. Second operand has 97 states, 96 states have (on average 1.5208333333333333) internal successors, (146), 95 states have internal predecessors, (146), 46 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-01-31 18:27:43,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:27:43,292 INFO L93 Difference]: Finished difference Result 380 states and 381 transitions. [2022-01-31 18:27:43,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-01-31 18:27:43,293 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 96 states have (on average 1.5208333333333333) internal successors, (146), 95 states have internal predecessors, (146), 46 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Word has length 367 [2022-01-31 18:27:43,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:27:43,294 INFO L225 Difference]: With dead ends: 380 [2022-01-31 18:27:43,294 INFO L226 Difference]: Without dead ends: 378 [2022-01-31 18:27:43,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1176 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=389, Invalid=20491, Unknown=0, NotChecked=0, Total=20880 [2022-01-31 18:27:43,295 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 58 mSDsluCounter, 2633 mSDsCounter, 0 mSdLazyCounter, 20196 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 2738 SdHoareTripleChecker+Invalid, 20337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 20196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:27:43,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 2738 Invalid, 20337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 20196 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-01-31 18:27:43,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-01-31 18:27:43,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 377. [2022-01-31 18:27:43,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 281 states have (on average 1.00711743772242) internal successors, (283), 282 states have internal predecessors, (283), 48 states have call successors, (48), 48 states have call predecessors, (48), 47 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2022-01-31 18:27:43,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 378 transitions. [2022-01-31 18:27:43,443 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 378 transitions. Word has length 367 [2022-01-31 18:27:43,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:27:43,444 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 378 transitions. [2022-01-31 18:27:43,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 96 states have (on average 1.5208333333333333) internal successors, (146), 95 states have internal predecessors, (146), 46 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-01-31 18:27:43,444 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 378 transitions. [2022-01-31 18:27:43,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-01-31 18:27:43,445 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:27:43,445 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 46, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:27:43,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-01-31 18:27:43,445 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:27:43,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:27:43,445 INFO L85 PathProgramCache]: Analyzing trace with hash -350230798, now seen corresponding path program 89 times [2022-01-31 18:27:43,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:27:43,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598524866] [2022-01-31 18:27:43,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:27:43,447 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:27:43,447 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:27:43,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:27:43,449 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:27:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:27:45,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 18:27:45,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 18:27:45,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 18:27:45,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 18:27:45,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 18:27:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 18:27:45,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 18:27:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 18:27:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 18:27:45,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 18:27:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 18:27:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 18:27:45,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 18:27:45,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 18:27:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 18:27:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 18:27:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 18:27:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 18:27:45,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 18:27:45,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 18:27:45,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 18:27:45,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 18:27:45,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-01-31 18:27:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-01-31 18:27:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 18:27:45,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 18:27:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 18:27:45,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-01-31 18:27:45,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 18:27:45,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 18:27:45,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-01-31 18:27:45,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-01-31 18:27:45,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 18:27:45,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 18:27:45,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 18:27:45,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-01-31 18:27:45,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-01-31 18:27:45,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 18:27:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-01-31 18:27:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-01-31 18:27:45,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 18:27:45,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 18:27:45,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 18:27:45,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-01-31 18:27:45,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-01-31 18:27:45,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:45,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:27:45,487 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:27:45,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598524866] [2022-01-31 18:27:45,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [598524866] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:27:45,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:27:45,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [96] imperfect sequences [] total 96 [2022-01-31 18:27:45,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440252329] [2022-01-31 18:27:45,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:27:45,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-01-31 18:27:45,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:27:45,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-01-31 18:27:45,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2261, Invalid=6859, Unknown=0, NotChecked=0, Total=9120 [2022-01-31 18:27:45,489 INFO L87 Difference]: Start difference. First operand 377 states and 378 transitions. Second operand has 96 states, 96 states have (on average 1.5416666666666667) internal successors, (148), 95 states have internal predecessors, (148), 47 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-01-31 18:27:47,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:27:47,430 INFO L93 Difference]: Finished difference Result 708 states and 711 transitions. [2022-01-31 18:27:47,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-01-31 18:27:47,431 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.5416666666666667) internal successors, (148), 95 states have internal predecessors, (148), 47 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Word has length 374 [2022-01-31 18:27:47,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:27:47,432 INFO L225 Difference]: With dead ends: 708 [2022-01-31 18:27:47,432 INFO L226 Difference]: Without dead ends: 382 [2022-01-31 18:27:47,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4366 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=4470, Invalid=15552, Unknown=0, NotChecked=0, Total=20022 [2022-01-31 18:27:47,433 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 400 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 2230 mSolverCounterSat, 922 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 3152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 922 IncrementalHoareTripleChecker+Valid, 2230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 18:27:47,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [446 Valid, 273 Invalid, 3152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [922 Valid, 2230 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 18:27:47,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-01-31 18:27:47,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 378. [2022-01-31 18:27:47,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 282 states have (on average 1.0070921985815602) internal successors, (284), 283 states have internal predecessors, (284), 48 states have call successors, (48), 48 states have call predecessors, (48), 47 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2022-01-31 18:27:47,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 379 transitions. [2022-01-31 18:27:47,584 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 379 transitions. Word has length 374 [2022-01-31 18:27:47,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:27:47,584 INFO L470 AbstractCegarLoop]: Abstraction has 378 states and 379 transitions. [2022-01-31 18:27:47,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.5416666666666667) internal successors, (148), 95 states have internal predecessors, (148), 47 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-01-31 18:27:47,584 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 379 transitions. [2022-01-31 18:27:47,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2022-01-31 18:27:47,585 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:27:47,586 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:27:47,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-01-31 18:27:47,586 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:27:47,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:27:47,586 INFO L85 PathProgramCache]: Analyzing trace with hash 608806659, now seen corresponding path program 90 times [2022-01-31 18:27:47,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:27:47,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632614507] [2022-01-31 18:27:47,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:27:47,587 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:27:47,587 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:27:47,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:27:47,589 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:27:47,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:27:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-01-31 18:27:51,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 18:27:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 18:27:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 18:27:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 18:27:51,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 18:27:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 18:27:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 18:27:51,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 18:27:51,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 18:27:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 18:27:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 18:27:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 18:27:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 18:27:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 18:27:51,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-31 18:27:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-01-31 18:27:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 18:27:51,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 18:27:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 18:27:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-01-31 18:27:51,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 18:27:51,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 18:27:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-01-31 18:27:51,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-01-31 18:27:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 18:27:51,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 18:27:51,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 18:27:51,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-01-31 18:27:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 18:27:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 18:27:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-01-31 18:27:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-01-31 18:27:51,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 18:27:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 18:27:51,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 18:27:51,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-01-31 18:27:51,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-01-31 18:27:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 18:27:51,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-01-31 18:27:51,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-01-31 18:27:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 18:27:51,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 18:27:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 18:27:51,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-01-31 18:27:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:27:51,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:27:51,141 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:27:51,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632614507] [2022-01-31 18:27:51,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1632614507] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:27:51,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:27:51,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [99] imperfect sequences [] total 99 [2022-01-31 18:27:51,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254567980] [2022-01-31 18:27:51,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:27:51,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-01-31 18:27:51,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:27:51,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-01-31 18:27:51,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=9506, Unknown=0, NotChecked=0, Total=9702 [2022-01-31 18:27:51,142 INFO L87 Difference]: Start difference. First operand 378 states and 379 transitions. Second operand has 99 states, 98 states have (on average 1.5204081632653061) internal successors, (149), 97 states have internal predecessors, (149), 47 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-01-31 18:27:59,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:27:59,615 INFO L93 Difference]: Finished difference Result 388 states and 389 transitions. [2022-01-31 18:27:59,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-01-31 18:27:59,615 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 98 states have (on average 1.5204081632653061) internal successors, (149), 97 states have internal predecessors, (149), 47 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Word has length 375 [2022-01-31 18:27:59,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:27:59,616 INFO L225 Difference]: With dead ends: 388 [2022-01-31 18:27:59,616 INFO L226 Difference]: Without dead ends: 386 [2022-01-31 18:27:59,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=397, Invalid=21359, Unknown=0, NotChecked=0, Total=21756 [2022-01-31 18:27:59,617 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 59 mSDsluCounter, 2741 mSDsCounter, 0 mSdLazyCounter, 21160 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 2848 SdHoareTripleChecker+Invalid, 21304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 21160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:27:59,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 2848 Invalid, 21304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 21160 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-01-31 18:27:59,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-01-31 18:27:59,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 385. [2022-01-31 18:27:59,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 287 states have (on average 1.0069686411149825) internal successors, (289), 288 states have internal predecessors, (289), 49 states have call successors, (49), 49 states have call predecessors, (49), 48 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2022-01-31 18:27:59,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 386 transitions. [2022-01-31 18:27:59,773 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 386 transitions. Word has length 375 [2022-01-31 18:27:59,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:27:59,773 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 386 transitions. [2022-01-31 18:27:59,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 98 states have (on average 1.5204081632653061) internal successors, (149), 97 states have internal predecessors, (149), 47 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-01-31 18:27:59,773 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 386 transitions. [2022-01-31 18:27:59,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2022-01-31 18:27:59,774 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:27:59,775 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:27:59,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-01-31 18:27:59,775 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:27:59,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:27:59,775 INFO L85 PathProgramCache]: Analyzing trace with hash 117171055, now seen corresponding path program 91 times [2022-01-31 18:27:59,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:27:59,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643244290] [2022-01-31 18:27:59,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:27:59,776 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:27:59,776 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:27:59,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:27:59,778 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:27:59,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:28:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-01-31 18:28:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 18:28:01,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 18:28:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 18:28:01,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 18:28:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 18:28:01,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 18:28:01,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 18:28:01,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 18:28:01,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 18:28:01,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 18:28:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 18:28:01,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 18:28:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 18:28:01,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 18:28:01,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-31 18:28:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-01-31 18:28:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 18:28:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 18:28:01,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 18:28:01,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-01-31 18:28:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 18:28:01,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 18:28:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-01-31 18:28:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-01-31 18:28:01,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 18:28:01,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 18:28:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 18:28:01,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-01-31 18:28:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 18:28:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 18:28:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-01-31 18:28:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-01-31 18:28:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 18:28:01,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 18:28:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 18:28:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-01-31 18:28:01,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-01-31 18:28:01,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 18:28:01,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-01-31 18:28:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-01-31 18:28:01,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 18:28:01,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 18:28:01,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 18:28:01,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-01-31 18:28:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-01-31 18:28:01,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:01,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:28:01,934 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:28:01,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643244290] [2022-01-31 18:28:01,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1643244290] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:28:01,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:28:01,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [98] imperfect sequences [] total 98 [2022-01-31 18:28:01,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746706795] [2022-01-31 18:28:01,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:28:01,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-01-31 18:28:01,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:28:01,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-01-31 18:28:01,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2357, Invalid=7149, Unknown=0, NotChecked=0, Total=9506 [2022-01-31 18:28:01,937 INFO L87 Difference]: Start difference. First operand 385 states and 386 transitions. Second operand has 98 states, 98 states have (on average 1.5408163265306123) internal successors, (151), 97 states have internal predecessors, (151), 48 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-01-31 18:28:03,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:28:03,882 INFO L93 Difference]: Finished difference Result 723 states and 726 transitions. [2022-01-31 18:28:03,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-01-31 18:28:03,882 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 1.5408163265306123) internal successors, (151), 97 states have internal predecessors, (151), 48 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Word has length 382 [2022-01-31 18:28:03,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:28:03,883 INFO L225 Difference]: With dead ends: 723 [2022-01-31 18:28:03,883 INFO L226 Difference]: Without dead ends: 390 [2022-01-31 18:28:03,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4555 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=4661, Invalid=16219, Unknown=0, NotChecked=0, Total=20880 [2022-01-31 18:28:03,885 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 337 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 2164 mSolverCounterSat, 802 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 2966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 802 IncrementalHoareTripleChecker+Valid, 2164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 18:28:03,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 480 Invalid, 2966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [802 Valid, 2164 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 18:28:03,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-01-31 18:28:04,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 386. [2022-01-31 18:28:04,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 288 states have (on average 1.0069444444444444) internal successors, (290), 289 states have internal predecessors, (290), 49 states have call successors, (49), 49 states have call predecessors, (49), 48 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2022-01-31 18:28:04,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 387 transitions. [2022-01-31 18:28:04,041 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 387 transitions. Word has length 382 [2022-01-31 18:28:04,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:28:04,041 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 387 transitions. [2022-01-31 18:28:04,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 1.5408163265306123) internal successors, (151), 97 states have internal predecessors, (151), 48 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-01-31 18:28:04,042 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 387 transitions. [2022-01-31 18:28:04,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2022-01-31 18:28:04,043 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:28:04,043 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:28:04,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-01-31 18:28:04,043 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:28:04,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:28:04,043 INFO L85 PathProgramCache]: Analyzing trace with hash 854655616, now seen corresponding path program 92 times [2022-01-31 18:28:04,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:28:04,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128944669] [2022-01-31 18:28:04,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:28:04,044 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:28:04,045 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:28:04,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:28:04,047 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:28:04,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:28:07,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-01-31 18:28:07,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-31 18:28:07,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 18:28:07,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 18:28:07,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 18:28:07,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 18:28:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 18:28:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 18:28:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 18:28:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-31 18:28:07,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:28:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 18:28:07,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:28:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 18:28:07,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 18:28:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 18:28:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 18:28:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-01-31 18:28:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 18:28:07,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 18:28:07,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 18:28:07,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-01-31 18:28:07,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 18:28:07,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 18:28:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-01-31 18:28:07,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-01-31 18:28:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 18:28:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 18:28:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 18:28:07,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-01-31 18:28:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 18:28:07,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 18:28:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-01-31 18:28:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-01-31 18:28:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 18:28:07,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 18:28:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 18:28:07,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-01-31 18:28:07,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-01-31 18:28:07,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 18:28:07,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-01-31 18:28:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-01-31 18:28:07,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 18:28:07,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 18:28:07,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 18:28:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-01-31 18:28:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:07,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:28:07,756 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:28:07,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128944669] [2022-01-31 18:28:07,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [128944669] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:28:07,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:28:07,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [101] imperfect sequences [] total 101 [2022-01-31 18:28:07,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552170504] [2022-01-31 18:28:07,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:28:07,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-01-31 18:28:07,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:28:07,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-01-31 18:28:07,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=9900, Unknown=0, NotChecked=0, Total=10100 [2022-01-31 18:28:07,757 INFO L87 Difference]: Start difference. First operand 386 states and 387 transitions. Second operand has 101 states, 100 states have (on average 1.52) internal successors, (152), 99 states have internal predecessors, (152), 48 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-01-31 18:28:16,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:28:16,606 INFO L93 Difference]: Finished difference Result 396 states and 397 transitions. [2022-01-31 18:28:16,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-01-31 18:28:16,607 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 100 states have (on average 1.52) internal successors, (152), 99 states have internal predecessors, (152), 48 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Word has length 383 [2022-01-31 18:28:16,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:28:16,608 INFO L225 Difference]: With dead ends: 396 [2022-01-31 18:28:16,608 INFO L226 Difference]: Without dead ends: 394 [2022-01-31 18:28:16,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1275 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=405, Invalid=22245, Unknown=0, NotChecked=0, Total=22650 [2022-01-31 18:28:16,610 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 60 mSDsluCounter, 2843 mSDsCounter, 0 mSdLazyCounter, 21938 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 2952 SdHoareTripleChecker+Invalid, 22085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 21938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:28:16,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 2952 Invalid, 22085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 21938 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-01-31 18:28:16,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-01-31 18:28:16,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 393. [2022-01-31 18:28:16,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 293 states have (on average 1.006825938566553) internal successors, (295), 294 states have internal predecessors, (295), 50 states have call successors, (50), 50 states have call predecessors, (50), 49 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2022-01-31 18:28:16,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 394 transitions. [2022-01-31 18:28:16,785 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 394 transitions. Word has length 383 [2022-01-31 18:28:16,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:28:16,786 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 394 transitions. [2022-01-31 18:28:16,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 100 states have (on average 1.52) internal successors, (152), 99 states have internal predecessors, (152), 48 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-01-31 18:28:16,786 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 394 transitions. [2022-01-31 18:28:16,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2022-01-31 18:28:16,787 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:28:16,787 INFO L514 BasicCegarLoop]: trace histogram [48, 48, 48, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:28:16,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-01-31 18:28:16,787 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:28:16,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:28:16,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1113264466, now seen corresponding path program 93 times [2022-01-31 18:28:16,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:28:16,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452492675] [2022-01-31 18:28:16,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:28:16,789 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:28:16,789 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:28:16,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:28:16,792 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:28:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:28:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-01-31 18:28:18,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-31 18:28:18,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 18:28:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 18:28:18,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 18:28:18,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 18:28:18,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 18:28:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 18:28:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 18:28:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-31 18:28:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:28:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 18:28:18,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:28:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 18:28:18,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 18:28:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 18:28:18,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 18:28:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-01-31 18:28:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 18:28:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 18:28:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 18:28:18,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-01-31 18:28:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 18:28:18,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 18:28:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-01-31 18:28:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-01-31 18:28:18,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 18:28:18,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 18:28:18,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 18:28:18,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-01-31 18:28:18,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 18:28:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 18:28:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-01-31 18:28:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-01-31 18:28:18,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 18:28:18,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 18:28:18,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 18:28:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-01-31 18:28:18,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-01-31 18:28:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 18:28:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-01-31 18:28:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-01-31 18:28:18,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 18:28:18,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 18:28:18,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 18:28:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-01-31 18:28:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-01-31 18:28:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:18,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:28:18,997 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:28:18,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1452492675] [2022-01-31 18:28:18,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1452492675] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:28:18,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:28:18,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [100] imperfect sequences [] total 100 [2022-01-31 18:28:18,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637597592] [2022-01-31 18:28:18,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:28:18,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2022-01-31 18:28:18,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:28:18,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2022-01-31 18:28:18,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2455, Invalid=7445, Unknown=0, NotChecked=0, Total=9900 [2022-01-31 18:28:19,000 INFO L87 Difference]: Start difference. First operand 393 states and 394 transitions. Second operand has 100 states, 100 states have (on average 1.54) internal successors, (154), 99 states have internal predecessors, (154), 49 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-01-31 18:28:21,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:28:21,009 INFO L93 Difference]: Finished difference Result 738 states and 741 transitions. [2022-01-31 18:28:21,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-01-31 18:28:21,009 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 1.54) internal successors, (154), 99 states have internal predecessors, (154), 49 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Word has length 390 [2022-01-31 18:28:21,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:28:21,010 INFO L225 Difference]: With dead ends: 738 [2022-01-31 18:28:21,010 INFO L226 Difference]: Without dead ends: 398 [2022-01-31 18:28:21,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4748 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=4856, Invalid=16900, Unknown=0, NotChecked=0, Total=21756 [2022-01-31 18:28:21,012 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 556 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 1852 mSolverCounterSat, 1237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 3089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1237 IncrementalHoareTripleChecker+Valid, 1852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 18:28:21,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [604 Valid, 275 Invalid, 3089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1237 Valid, 1852 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 18:28:21,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-01-31 18:28:21,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 394. [2022-01-31 18:28:21,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 294 states have (on average 1.0068027210884354) internal successors, (296), 295 states have internal predecessors, (296), 50 states have call successors, (50), 50 states have call predecessors, (50), 49 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2022-01-31 18:28:21,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 395 transitions. [2022-01-31 18:28:21,184 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 395 transitions. Word has length 390 [2022-01-31 18:28:21,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:28:21,184 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 395 transitions. [2022-01-31 18:28:21,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 1.54) internal successors, (154), 99 states have internal predecessors, (154), 49 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-01-31 18:28:21,184 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 395 transitions. [2022-01-31 18:28:21,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2022-01-31 18:28:21,185 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:28:21,185 INFO L514 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:28:21,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-01-31 18:28:21,186 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:28:21,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:28:21,186 INFO L85 PathProgramCache]: Analyzing trace with hash -884175005, now seen corresponding path program 94 times [2022-01-31 18:28:21,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:28:21,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506141574] [2022-01-31 18:28:21,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:28:21,187 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:28:21,187 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:28:21,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:28:21,191 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:28:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:24,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:28:24,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:24,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 18:28:24,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:24,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-31 18:28:24,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:24,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-31 18:28:24,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:24,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 18:28:24,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:24,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 18:28:24,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:24,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 18:28:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:24,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 18:28:24,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:24,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 18:28:24,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:24,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 18:28:24,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:24,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 18:28:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:24,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-31 18:28:24,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:24,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 18:28:24,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:24,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 18:28:24,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:24,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 18:28:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:24,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 18:28:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:24,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 18:28:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:24,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 18:28:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:24,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 18:28:24,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:24,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 18:28:24,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:24,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 18:28:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:24,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 18:28:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:24,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 18:28:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:24,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-01-31 18:28:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:24,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 18:28:24,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:24,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 18:28:24,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:24,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-01-31 18:28:24,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:24,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-01-31 18:28:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:24,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 18:28:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:24,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 18:28:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:24,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 18:28:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:24,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-01-31 18:28:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:24,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 18:28:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:24,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 18:28:24,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:25,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-01-31 18:28:25,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:25,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-01-31 18:28:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:25,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 18:28:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:25,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 18:28:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:25,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 18:28:25,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:25,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-01-31 18:28:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:25,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-01-31 18:28:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:25,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 18:28:25,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:25,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-01-31 18:28:25,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:25,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-01-31 18:28:25,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:25,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 18:28:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:25,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 18:28:25,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:25,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 18:28:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:25,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-01-31 18:28:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:25,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:28:25,018 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:28:25,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506141574] [2022-01-31 18:28:25,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [506141574] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:28:25,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:28:25,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [] total 103 [2022-01-31 18:28:25,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55670815] [2022-01-31 18:28:25,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:28:25,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-01-31 18:28:25,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:28:25,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-01-31 18:28:25,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=10302, Unknown=0, NotChecked=0, Total=10506 [2022-01-31 18:28:25,022 INFO L87 Difference]: Start difference. First operand 394 states and 395 transitions. Second operand has 103 states, 102 states have (on average 1.5196078431372548) internal successors, (155), 101 states have internal predecessors, (155), 49 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-01-31 18:28:34,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:28:34,354 INFO L93 Difference]: Finished difference Result 404 states and 405 transitions. [2022-01-31 18:28:34,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-01-31 18:28:34,358 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 102 states have (on average 1.5196078431372548) internal successors, (155), 101 states have internal predecessors, (155), 49 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Word has length 391 [2022-01-31 18:28:34,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:28:34,360 INFO L225 Difference]: With dead ends: 404 [2022-01-31 18:28:34,360 INFO L226 Difference]: Without dead ends: 402 [2022-01-31 18:28:34,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1326 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=413, Invalid=23149, Unknown=0, NotChecked=0, Total=23562 [2022-01-31 18:28:34,361 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 61 mSDsluCounter, 2955 mSDsCounter, 0 mSdLazyCounter, 22942 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 3066 SdHoareTripleChecker+Invalid, 23092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 22942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:28:34,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 3066 Invalid, 23092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 22942 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-01-31 18:28:34,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-01-31 18:28:34,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 401. [2022-01-31 18:28:34,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 299 states have (on average 1.0066889632107023) internal successors, (301), 300 states have internal predecessors, (301), 51 states have call successors, (51), 51 states have call predecessors, (51), 50 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2022-01-31 18:28:34,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 402 transitions. [2022-01-31 18:28:34,528 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 402 transitions. Word has length 391 [2022-01-31 18:28:34,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:28:34,528 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 402 transitions. [2022-01-31 18:28:34,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 102 states have (on average 1.5196078431372548) internal successors, (155), 101 states have internal predecessors, (155), 49 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-01-31 18:28:34,528 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 402 transitions. [2022-01-31 18:28:34,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2022-01-31 18:28:34,530 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:28:34,530 INFO L514 BasicCegarLoop]: trace histogram [49, 49, 49, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:28:34,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-01-31 18:28:34,530 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:28:34,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:28:34,530 INFO L85 PathProgramCache]: Analyzing trace with hash -556478705, now seen corresponding path program 95 times [2022-01-31 18:28:34,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:28:34,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625417336] [2022-01-31 18:28:34,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:28:34,531 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:28:34,531 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:28:34,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:28:34,534 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:28:34,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:28:36,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 18:28:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-31 18:28:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-31 18:28:36,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 18:28:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 18:28:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 18:28:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 18:28:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 18:28:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 18:28:36,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 18:28:36,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-31 18:28:36,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 18:28:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 18:28:36,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 18:28:36,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 18:28:36,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 18:28:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 18:28:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 18:28:36,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 18:28:36,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 18:28:36,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 18:28:36,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 18:28:36,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-01-31 18:28:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 18:28:36,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 18:28:36,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-01-31 18:28:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-01-31 18:28:36,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 18:28:36,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 18:28:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 18:28:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-01-31 18:28:36,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 18:28:36,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 18:28:36,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-01-31 18:28:36,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-01-31 18:28:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 18:28:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 18:28:36,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 18:28:36,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-01-31 18:28:36,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-01-31 18:28:36,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 18:28:36,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-01-31 18:28:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-01-31 18:28:36,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 18:28:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 18:28:36,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 18:28:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-01-31 18:28:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-01-31 18:28:36,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:36,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:28:36,847 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:28:36,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625417336] [2022-01-31 18:28:36,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [625417336] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:28:36,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:28:36,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [102] imperfect sequences [] total 102 [2022-01-31 18:28:36,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047344098] [2022-01-31 18:28:36,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:28:36,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-01-31 18:28:36,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:28:36,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-01-31 18:28:36,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2555, Invalid=7747, Unknown=0, NotChecked=0, Total=10302 [2022-01-31 18:28:36,849 INFO L87 Difference]: Start difference. First operand 401 states and 402 transitions. Second operand has 102 states, 102 states have (on average 1.5392156862745099) internal successors, (157), 101 states have internal predecessors, (157), 50 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-01-31 18:28:38,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:28:38,900 INFO L93 Difference]: Finished difference Result 753 states and 756 transitions. [2022-01-31 18:28:38,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-01-31 18:28:38,900 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 1.5392156862745099) internal successors, (157), 101 states have internal predecessors, (157), 50 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Word has length 398 [2022-01-31 18:28:38,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:28:38,902 INFO L225 Difference]: With dead ends: 753 [2022-01-31 18:28:38,902 INFO L226 Difference]: Without dead ends: 406 [2022-01-31 18:28:38,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4945 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=5055, Invalid=17595, Unknown=0, NotChecked=0, Total=22650 [2022-01-31 18:28:38,903 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 383 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 2014 mSolverCounterSat, 902 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 902 IncrementalHoareTripleChecker+Valid, 2014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 18:28:38,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [432 Valid, 441 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [902 Valid, 2014 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 18:28:38,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2022-01-31 18:28:39,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 402. [2022-01-31 18:28:39,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 300 states have (on average 1.0066666666666666) internal successors, (302), 301 states have internal predecessors, (302), 51 states have call successors, (51), 51 states have call predecessors, (51), 50 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2022-01-31 18:28:39,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 403 transitions. [2022-01-31 18:28:39,071 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 403 transitions. Word has length 398 [2022-01-31 18:28:39,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:28:39,071 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 403 transitions. [2022-01-31 18:28:39,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 1.5392156862745099) internal successors, (157), 101 states have internal predecessors, (157), 50 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-01-31 18:28:39,071 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 403 transitions. [2022-01-31 18:28:39,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2022-01-31 18:28:39,072 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:28:39,073 INFO L514 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:28:39,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-01-31 18:28:39,073 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:28:39,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:28:39,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1844685856, now seen corresponding path program 96 times [2022-01-31 18:28:39,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:28:39,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498987213] [2022-01-31 18:28:39,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:28:39,074 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:28:39,074 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:28:39,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:28:39,077 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:28:39,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:28:43,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 18:28:43,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 18:28:43,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 18:28:43,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 18:28:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 18:28:43,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 18:28:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 18:28:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 18:28:43,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 18:28:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 18:28:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 18:28:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 18:28:43,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 18:28:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 18:28:43,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 18:28:43,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 18:28:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 18:28:43,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 18:28:43,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 18:28:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 18:28:43,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 18:28:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 18:28:43,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 18:28:43,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-01-31 18:28:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 18:28:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 18:28:43,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-01-31 18:28:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-01-31 18:28:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 18:28:43,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 18:28:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 18:28:43,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-01-31 18:28:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 18:28:43,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 18:28:43,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-01-31 18:28:43,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-01-31 18:28:43,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 18:28:43,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 18:28:43,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 18:28:43,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-01-31 18:28:43,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-01-31 18:28:43,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 18:28:43,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-01-31 18:28:43,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-01-31 18:28:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 18:28:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:28:43,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 18:28:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-01-31 18:28:43,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:43,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:28:43,346 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:28:43,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498987213] [2022-01-31 18:28:43,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [498987213] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:28:43,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:28:43,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [105] imperfect sequences [] total 105 [2022-01-31 18:28:43,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233378291] [2022-01-31 18:28:43,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:28:43,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2022-01-31 18:28:43,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:28:43,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2022-01-31 18:28:43,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=10664, Unknown=0, NotChecked=0, Total=10920 [2022-01-31 18:28:43,347 INFO L87 Difference]: Start difference. First operand 402 states and 403 transitions. Second operand has 105 states, 104 states have (on average 1.5192307692307692) internal successors, (158), 103 states have internal predecessors, (158), 50 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-01-31 18:28:50,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:28:50,787 INFO L93 Difference]: Finished difference Result 412 states and 413 transitions. [2022-01-31 18:28:50,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-01-31 18:28:50,788 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 104 states have (on average 1.5192307692307692) internal successors, (158), 103 states have internal predecessors, (158), 50 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Word has length 399 [2022-01-31 18:28:50,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:28:50,789 INFO L225 Difference]: With dead ends: 412 [2022-01-31 18:28:50,789 INFO L226 Difference]: Without dead ends: 410 [2022-01-31 18:28:50,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=276, Invalid=11496, Unknown=0, NotChecked=0, Total=11772 [2022-01-31 18:28:50,790 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 61 mSDsluCounter, 3049 mSDsCounter, 0 mSdLazyCounter, 23428 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 3162 SdHoareTripleChecker+Invalid, 23580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 23428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:28:50,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 3162 Invalid, 23580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 23428 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-01-31 18:28:50,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-01-31 18:28:50,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 409. [2022-01-31 18:28:50,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 305 states have (on average 1.0065573770491802) internal successors, (307), 306 states have internal predecessors, (307), 52 states have call successors, (52), 52 states have call predecessors, (52), 51 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2022-01-31 18:28:50,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 410 transitions. [2022-01-31 18:28:50,965 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 410 transitions. Word has length 399 [2022-01-31 18:28:50,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:28:50,965 INFO L470 AbstractCegarLoop]: Abstraction has 409 states and 410 transitions. [2022-01-31 18:28:50,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 104 states have (on average 1.5192307692307692) internal successors, (158), 103 states have internal predecessors, (158), 50 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-01-31 18:28:50,965 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 410 transitions. [2022-01-31 18:28:50,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2022-01-31 18:28:50,967 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:28:50,967 INFO L514 BasicCegarLoop]: trace histogram [50, 50, 50, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:28:50,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-01-31 18:28:50,967 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:28:50,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:28:50,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1804315726, now seen corresponding path program 97 times [2022-01-31 18:28:50,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:28:50,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610569733] [2022-01-31 18:28:50,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:28:50,968 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:28:50,968 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:28:50,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:28:50,971 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:28:51,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:28:53,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 18:28:53,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 18:28:53,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 18:28:53,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 18:28:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 18:28:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 18:28:53,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 18:28:53,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 18:28:53,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 18:28:53,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 18:28:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 18:28:53,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 18:28:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 18:28:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 18:28:53,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 18:28:53,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 18:28:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 18:28:53,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 18:28:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 18:28:53,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 18:28:53,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 18:28:53,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 18:28:53,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 18:28:53,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-01-31 18:28:53,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 18:28:53,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 18:28:53,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-01-31 18:28:53,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-01-31 18:28:53,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 18:28:53,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 18:28:53,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 18:28:53,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-01-31 18:28:53,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 18:28:53,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 18:28:53,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-01-31 18:28:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-01-31 18:28:53,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 18:28:53,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 18:28:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 18:28:53,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-01-31 18:28:53,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-01-31 18:28:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 18:28:53,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-01-31 18:28:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-01-31 18:28:53,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 18:28:53,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:28:53,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 18:28:53,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-01-31 18:28:53,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-01-31 18:28:53,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:53,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:28:53,354 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:28:53,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610569733] [2022-01-31 18:28:53,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1610569733] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:28:53,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:28:53,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [104] imperfect sequences [] total 104 [2022-01-31 18:28:53,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709772414] [2022-01-31 18:28:53,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:28:53,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-01-31 18:28:53,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:28:53,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-01-31 18:28:53,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2657, Invalid=8055, Unknown=0, NotChecked=0, Total=10712 [2022-01-31 18:28:53,356 INFO L87 Difference]: Start difference. First operand 409 states and 410 transitions. Second operand has 104 states, 104 states have (on average 1.5384615384615385) internal successors, (160), 103 states have internal predecessors, (160), 51 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-01-31 18:28:55,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:28:55,553 INFO L93 Difference]: Finished difference Result 768 states and 771 transitions. [2022-01-31 18:28:55,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-01-31 18:28:55,553 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 1.5384615384615385) internal successors, (160), 103 states have internal predecessors, (160), 51 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Word has length 406 [2022-01-31 18:28:55,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:28:55,555 INFO L225 Difference]: With dead ends: 768 [2022-01-31 18:28:55,555 INFO L226 Difference]: Without dead ends: 414 [2022-01-31 18:28:55,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5146 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=5258, Invalid=18304, Unknown=0, NotChecked=0, Total=23562 [2022-01-31 18:28:55,556 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 474 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 2250 mSolverCounterSat, 1077 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 3327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1077 IncrementalHoareTripleChecker+Valid, 2250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:28:55,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [524 Valid, 235 Invalid, 3327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1077 Valid, 2250 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 18:28:55,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-01-31 18:28:55,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 410. [2022-01-31 18:28:55,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 306 states have (on average 1.0065359477124183) internal successors, (308), 307 states have internal predecessors, (308), 52 states have call successors, (52), 52 states have call predecessors, (52), 51 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2022-01-31 18:28:55,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 411 transitions. [2022-01-31 18:28:55,729 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 411 transitions. Word has length 406 [2022-01-31 18:28:55,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:28:55,729 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 411 transitions. [2022-01-31 18:28:55,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 1.5384615384615385) internal successors, (160), 103 states have internal predecessors, (160), 51 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-01-31 18:28:55,730 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 411 transitions. [2022-01-31 18:28:55,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2022-01-31 18:28:55,731 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:28:55,731 INFO L514 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:28:55,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-01-31 18:28:55,731 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:28:55,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:28:55,731 INFO L85 PathProgramCache]: Analyzing trace with hash 301043651, now seen corresponding path program 98 times [2022-01-31 18:28:55,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:28:55,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098602843] [2022-01-31 18:28:55,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:28:55,732 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:28:55,733 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:28:55,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:28:55,736 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:28:55,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:28:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 18:28:59,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 18:28:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:28:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:28:59,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 18:28:59,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 18:28:59,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 18:28:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 18:28:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 18:28:59,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 18:28:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 18:28:59,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 18:28:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-31 18:28:59,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 18:28:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 18:28:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 18:28:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 18:28:59,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 18:28:59,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 18:28:59,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-01-31 18:28:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-01-31 18:28:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 18:28:59,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 18:28:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 18:28:59,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-01-31 18:28:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 18:28:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 18:28:59,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-01-31 18:28:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-01-31 18:28:59,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 18:28:59,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 18:28:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 18:28:59,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-01-31 18:28:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 18:28:59,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 18:28:59,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-01-31 18:28:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-01-31 18:28:59,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 18:28:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 18:28:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 18:28:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-01-31 18:28:59,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-01-31 18:28:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 18:28:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-01-31 18:28:59,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-01-31 18:28:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 18:28:59,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-01-31 18:28:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 18:28:59,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-01-31 18:28:59,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:28:59,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:28:59,927 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:28:59,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098602843] [2022-01-31 18:28:59,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2098602843] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:28:59,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:28:59,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [107] imperfect sequences [] total 107 [2022-01-31 18:28:59,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289941025] [2022-01-31 18:28:59,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:28:59,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-01-31 18:28:59,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:28:59,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-01-31 18:28:59,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=11130, Unknown=0, NotChecked=0, Total=11342 [2022-01-31 18:28:59,929 INFO L87 Difference]: Start difference. First operand 410 states and 411 transitions. Second operand has 107 states, 106 states have (on average 1.5188679245283019) internal successors, (161), 105 states have internal predecessors, (161), 51 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-01-31 18:29:09,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:29:09,935 INFO L93 Difference]: Finished difference Result 420 states and 421 transitions. [2022-01-31 18:29:09,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-01-31 18:29:09,936 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 106 states have (on average 1.5188679245283019) internal successors, (161), 105 states have internal predecessors, (161), 51 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Word has length 407 [2022-01-31 18:29:09,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:29:09,937 INFO L225 Difference]: With dead ends: 420 [2022-01-31 18:29:09,937 INFO L226 Difference]: Without dead ends: 418 [2022-01-31 18:29:09,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1431 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=429, Invalid=25011, Unknown=0, NotChecked=0, Total=25440 [2022-01-31 18:29:09,939 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 63 mSDsluCounter, 3177 mSDsCounter, 0 mSdLazyCounter, 24796 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 3292 SdHoareTripleChecker+Invalid, 24952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 24796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-01-31 18:29:09,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 3292 Invalid, 24952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 24796 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-01-31 18:29:09,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-01-31 18:29:10,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 417. [2022-01-31 18:29:10,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 311 states have (on average 1.0064308681672025) internal successors, (313), 312 states have internal predecessors, (313), 53 states have call successors, (53), 53 states have call predecessors, (53), 52 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-01-31 18:29:10,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 418 transitions. [2022-01-31 18:29:10,118 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 418 transitions. Word has length 407 [2022-01-31 18:29:10,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:29:10,118 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 418 transitions. [2022-01-31 18:29:10,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 106 states have (on average 1.5188679245283019) internal successors, (161), 105 states have internal predecessors, (161), 51 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-01-31 18:29:10,118 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 418 transitions. [2022-01-31 18:29:10,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-01-31 18:29:10,120 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:29:10,120 INFO L514 BasicCegarLoop]: trace histogram [51, 51, 51, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:29:10,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-01-31 18:29:10,121 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:29:10,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:29:10,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1191140689, now seen corresponding path program 99 times [2022-01-31 18:29:10,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:29:10,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292007503] [2022-01-31 18:29:10,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:29:10,123 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:29:10,124 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:29:10,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:29:10,127 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:29:10,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:29:12,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 18:29:12,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 18:29:12,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:29:12,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:29:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 18:29:12,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 18:29:12,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 18:29:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 18:29:12,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 18:29:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 18:29:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 18:29:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 18:29:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-31 18:29:12,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 18:29:12,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 18:29:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 18:29:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 18:29:12,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 18:29:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 18:29:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-01-31 18:29:12,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-01-31 18:29:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 18:29:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 18:29:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 18:29:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-01-31 18:29:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 18:29:12,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 18:29:12,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-01-31 18:29:12,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-01-31 18:29:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 18:29:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 18:29:12,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 18:29:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-01-31 18:29:12,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 18:29:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 18:29:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-01-31 18:29:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-01-31 18:29:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 18:29:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 18:29:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 18:29:12,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-01-31 18:29:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-01-31 18:29:12,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 18:29:12,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-01-31 18:29:12,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-01-31 18:29:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 18:29:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-01-31 18:29:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 18:29:12,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-01-31 18:29:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-01-31 18:29:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:12,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:29:12,609 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:29:12,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292007503] [2022-01-31 18:29:12,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [292007503] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:29:12,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:29:12,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [106] imperfect sequences [] total 106 [2022-01-31 18:29:12,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627849154] [2022-01-31 18:29:12,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:29:12,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2022-01-31 18:29:12,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:29:12,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2022-01-31 18:29:12,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2761, Invalid=8369, Unknown=0, NotChecked=0, Total=11130 [2022-01-31 18:29:12,611 INFO L87 Difference]: Start difference. First operand 417 states and 418 transitions. Second operand has 106 states, 106 states have (on average 1.5377358490566038) internal successors, (163), 105 states have internal predecessors, (163), 52 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-01-31 18:29:14,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:29:14,901 INFO L93 Difference]: Finished difference Result 783 states and 786 transitions. [2022-01-31 18:29:14,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-01-31 18:29:14,901 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 1.5377358490566038) internal successors, (163), 105 states have internal predecessors, (163), 52 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Word has length 414 [2022-01-31 18:29:14,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:29:14,903 INFO L225 Difference]: With dead ends: 783 [2022-01-31 18:29:14,903 INFO L226 Difference]: Without dead ends: 422 [2022-01-31 18:29:14,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5351 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=5465, Invalid=19027, Unknown=0, NotChecked=0, Total=24492 [2022-01-31 18:29:14,904 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 381 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 2894 mSolverCounterSat, 896 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 3790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 896 IncrementalHoareTripleChecker+Valid, 2894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:29:14,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [432 Valid, 300 Invalid, 3790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [896 Valid, 2894 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 18:29:14,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-01-31 18:29:15,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 418. [2022-01-31 18:29:15,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 312 states have (on average 1.0064102564102564) internal successors, (314), 313 states have internal predecessors, (314), 53 states have call successors, (53), 53 states have call predecessors, (53), 52 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-01-31 18:29:15,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 419 transitions. [2022-01-31 18:29:15,091 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 419 transitions. Word has length 414 [2022-01-31 18:29:15,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:29:15,091 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 419 transitions. [2022-01-31 18:29:15,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 1.5377358490566038) internal successors, (163), 105 states have internal predecessors, (163), 52 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-01-31 18:29:15,091 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 419 transitions. [2022-01-31 18:29:15,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2022-01-31 18:29:15,093 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:29:15,093 INFO L514 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:29:15,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-01-31 18:29:15,093 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:29:15,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:29:15,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1275936192, now seen corresponding path program 100 times [2022-01-31 18:29:15,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:29:15,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464190909] [2022-01-31 18:29:15,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:29:15,094 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:29:15,094 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:29:15,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:29:15,097 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:29:15,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:29:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 18:29:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-31 18:29:19,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 18:29:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 18:29:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 18:29:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 18:29:19,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 18:29:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 18:29:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 18:29:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 18:29:19,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 18:29:19,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 18:29:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 18:29:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-01-31 18:29:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 18:29:19,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 18:29:19,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 18:29:19,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 18:29:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 18:29:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 18:29:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-01-31 18:29:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-01-31 18:29:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 18:29:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 18:29:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 18:29:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-01-31 18:29:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 18:29:19,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 18:29:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-01-31 18:29:19,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-01-31 18:29:19,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 18:29:19,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 18:29:19,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 18:29:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-01-31 18:29:19,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 18:29:19,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 18:29:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-01-31 18:29:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-01-31 18:29:19,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 18:29:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 18:29:19,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 18:29:19,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-01-31 18:29:19,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-01-31 18:29:19,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-01-31 18:29:19,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-01-31 18:29:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-01-31 18:29:19,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 18:29:19,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-01-31 18:29:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 18:29:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-01-31 18:29:19,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:19,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:29:19,449 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:29:19,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464190909] [2022-01-31 18:29:19,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [464190909] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:29:19,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:29:19,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [109] imperfect sequences [] total 109 [2022-01-31 18:29:19,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691462327] [2022-01-31 18:29:19,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:29:19,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2022-01-31 18:29:19,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:29:19,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2022-01-31 18:29:19,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=11556, Unknown=0, NotChecked=0, Total=11772 [2022-01-31 18:29:19,451 INFO L87 Difference]: Start difference. First operand 418 states and 419 transitions. Second operand has 109 states, 108 states have (on average 1.5185185185185186) internal successors, (164), 107 states have internal predecessors, (164), 52 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-01-31 18:29:29,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:29:29,671 INFO L93 Difference]: Finished difference Result 428 states and 429 transitions. [2022-01-31 18:29:29,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-01-31 18:29:29,672 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 108 states have (on average 1.5185185185185186) internal successors, (164), 107 states have internal predecessors, (164), 52 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Word has length 415 [2022-01-31 18:29:29,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:29:29,673 INFO L225 Difference]: With dead ends: 428 [2022-01-31 18:29:29,673 INFO L226 Difference]: Without dead ends: 426 [2022-01-31 18:29:29,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1485 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=437, Invalid=25969, Unknown=0, NotChecked=0, Total=26406 [2022-01-31 18:29:29,674 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 64 mSDsluCounter, 3287 mSDsCounter, 0 mSdLazyCounter, 25638 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 3404 SdHoareTripleChecker+Invalid, 25797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 25638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:29:29,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 3404 Invalid, 25797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 25638 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-01-31 18:29:29,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-01-31 18:29:29,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 425. [2022-01-31 18:29:29,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 317 states have (on average 1.0063091482649842) internal successors, (319), 318 states have internal predecessors, (319), 54 states have call successors, (54), 54 states have call predecessors, (54), 53 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2022-01-31 18:29:29,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 426 transitions. [2022-01-31 18:29:29,864 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 426 transitions. Word has length 415 [2022-01-31 18:29:29,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:29:29,865 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 426 transitions. [2022-01-31 18:29:29,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 108 states have (on average 1.5185185185185186) internal successors, (164), 107 states have internal predecessors, (164), 52 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-01-31 18:29:29,865 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 426 transitions. [2022-01-31 18:29:29,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2022-01-31 18:29:29,866 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:29:29,866 INFO L514 BasicCegarLoop]: trace histogram [52, 52, 52, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:29:29,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-01-31 18:29:29,867 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:29:29,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:29:29,867 INFO L85 PathProgramCache]: Analyzing trace with hash -815682030, now seen corresponding path program 101 times [2022-01-31 18:29:29,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:29:29,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1489794931] [2022-01-31 18:29:29,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:29:29,868 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:29:29,868 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:29:29,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:29:29,871 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:29:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:29:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 18:29:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-31 18:29:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 18:29:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 18:29:32,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 18:29:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 18:29:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 18:29:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 18:29:32,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 18:29:32,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 18:29:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 18:29:32,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 18:29:32,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 18:29:32,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-01-31 18:29:32,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 18:29:32,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 18:29:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 18:29:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 18:29:32,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 18:29:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 18:29:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-01-31 18:29:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-01-31 18:29:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 18:29:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 18:29:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 18:29:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-01-31 18:29:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 18:29:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 18:29:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-01-31 18:29:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-01-31 18:29:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 18:29:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 18:29:32,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 18:29:32,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-01-31 18:29:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 18:29:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 18:29:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-01-31 18:29:32,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-01-31 18:29:32,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 18:29:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 18:29:32,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 18:29:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-01-31 18:29:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-01-31 18:29:32,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-01-31 18:29:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-01-31 18:29:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-01-31 18:29:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 18:29:32,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-01-31 18:29:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 18:29:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-01-31 18:29:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-01-31 18:29:32,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:32,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:29:32,447 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:29:32,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1489794931] [2022-01-31 18:29:32,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1489794931] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:29:32,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:29:32,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [108] imperfect sequences [] total 108 [2022-01-31 18:29:32,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234270741] [2022-01-31 18:29:32,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:29:32,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2022-01-31 18:29:32,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:29:32,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2022-01-31 18:29:32,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2867, Invalid=8689, Unknown=0, NotChecked=0, Total=11556 [2022-01-31 18:29:32,449 INFO L87 Difference]: Start difference. First operand 425 states and 426 transitions. Second operand has 108 states, 108 states have (on average 1.537037037037037) internal successors, (166), 107 states have internal predecessors, (166), 53 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-01-31 18:29:34,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:29:34,665 INFO L93 Difference]: Finished difference Result 798 states and 801 transitions. [2022-01-31 18:29:34,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-01-31 18:29:34,665 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 1.537037037037037) internal successors, (166), 107 states have internal predecessors, (166), 53 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Word has length 422 [2022-01-31 18:29:34,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:29:34,666 INFO L225 Difference]: With dead ends: 798 [2022-01-31 18:29:34,666 INFO L226 Difference]: Without dead ends: 430 [2022-01-31 18:29:34,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5560 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=5676, Invalid=19764, Unknown=0, NotChecked=0, Total=25440 [2022-01-31 18:29:34,668 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 410 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 2395 mSolverCounterSat, 958 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 3353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 958 IncrementalHoareTripleChecker+Valid, 2395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:29:34,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [462 Valid, 467 Invalid, 3353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [958 Valid, 2395 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 18:29:34,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2022-01-31 18:29:34,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 426. [2022-01-31 18:29:34,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 318 states have (on average 1.0062893081761006) internal successors, (320), 319 states have internal predecessors, (320), 54 states have call successors, (54), 54 states have call predecessors, (54), 53 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2022-01-31 18:29:34,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 427 transitions. [2022-01-31 18:29:34,877 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 427 transitions. Word has length 422 [2022-01-31 18:29:34,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:29:34,877 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 427 transitions. [2022-01-31 18:29:34,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 108 states have (on average 1.537037037037037) internal successors, (166), 107 states have internal predecessors, (166), 53 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-01-31 18:29:34,878 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 427 transitions. [2022-01-31 18:29:34,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2022-01-31 18:29:34,879 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:29:34,879 INFO L514 BasicCegarLoop]: trace histogram [52, 52, 52, 52, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:29:34,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-01-31 18:29:34,879 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:29:34,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:29:34,879 INFO L85 PathProgramCache]: Analyzing trace with hash -567367645, now seen corresponding path program 102 times [2022-01-31 18:29:34,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:29:34,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725019167] [2022-01-31 18:29:34,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:29:34,880 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:29:34,880 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:29:34,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:29:34,884 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:29:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:29:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 18:29:39,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 18:29:39,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 18:29:39,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 18:29:39,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 18:29:39,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 18:29:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 18:29:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 18:29:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 18:29:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 18:29:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 18:29:39,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 18:29:39,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 18:29:39,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 18:29:39,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 18:29:39,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 18:29:39,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 18:29:39,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 18:29:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 18:29:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 18:29:39,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 18:29:39,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-01-31 18:29:39,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-01-31 18:29:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 18:29:39,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 18:29:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 18:29:39,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-01-31 18:29:39,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 18:29:39,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 18:29:39,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-01-31 18:29:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-01-31 18:29:39,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 18:29:39,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 18:29:39,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 18:29:39,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-01-31 18:29:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-01-31 18:29:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 18:29:39,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-01-31 18:29:39,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-01-31 18:29:39,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 18:29:39,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 18:29:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 18:29:39,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-01-31 18:29:39,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-01-31 18:29:39,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-01-31 18:29:39,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-01-31 18:29:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-01-31 18:29:39,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 18:29:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-01-31 18:29:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 18:29:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-01-31 18:29:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:39,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:29:39,329 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:29:39,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725019167] [2022-01-31 18:29:39,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1725019167] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:29:39,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:29:39,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [111] imperfect sequences [] total 111 [2022-01-31 18:29:39,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341466405] [2022-01-31 18:29:39,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:29:39,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2022-01-31 18:29:39,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:29:39,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2022-01-31 18:29:39,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=11990, Unknown=0, NotChecked=0, Total=12210 [2022-01-31 18:29:39,331 INFO L87 Difference]: Start difference. First operand 426 states and 427 transitions. Second operand has 111 states, 110 states have (on average 1.518181818181818) internal successors, (167), 109 states have internal predecessors, (167), 53 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-01-31 18:29:50,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:29:50,068 INFO L93 Difference]: Finished difference Result 436 states and 437 transitions. [2022-01-31 18:29:50,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-01-31 18:29:50,068 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 110 states have (on average 1.518181818181818) internal successors, (167), 109 states have internal predecessors, (167), 53 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Word has length 423 [2022-01-31 18:29:50,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:29:50,069 INFO L225 Difference]: With dead ends: 436 [2022-01-31 18:29:50,069 INFO L226 Difference]: Without dead ends: 434 [2022-01-31 18:29:50,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1540 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=445, Invalid=26945, Unknown=0, NotChecked=0, Total=27390 [2022-01-31 18:29:50,070 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 65 mSDsluCounter, 3403 mSDsCounter, 0 mSdLazyCounter, 26608 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 3522 SdHoareTripleChecker+Invalid, 26770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 26608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-01-31 18:29:50,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 3522 Invalid, 26770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 26608 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-01-31 18:29:50,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-01-31 18:29:50,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 433. [2022-01-31 18:29:50,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 323 states have (on average 1.0061919504643964) internal successors, (325), 324 states have internal predecessors, (325), 55 states have call successors, (55), 55 states have call predecessors, (55), 54 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2022-01-31 18:29:50,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 434 transitions. [2022-01-31 18:29:50,262 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 434 transitions. Word has length 423 [2022-01-31 18:29:50,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:29:50,263 INFO L470 AbstractCegarLoop]: Abstraction has 433 states and 434 transitions. [2022-01-31 18:29:50,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 110 states have (on average 1.518181818181818) internal successors, (167), 109 states have internal predecessors, (167), 53 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-01-31 18:29:50,263 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 434 transitions. [2022-01-31 18:29:50,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-01-31 18:29:50,264 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:29:50,264 INFO L514 BasicCegarLoop]: trace histogram [53, 53, 53, 52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:29:50,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-01-31 18:29:50,264 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:29:50,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:29:50,265 INFO L85 PathProgramCache]: Analyzing trace with hash 784948815, now seen corresponding path program 103 times [2022-01-31 18:29:50,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:29:50,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141484327] [2022-01-31 18:29:50,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:29:50,266 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:29:50,266 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:29:50,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:29:50,269 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:29:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:29:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 18:29:52,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 18:29:52,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 18:29:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 18:29:52,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 18:29:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 18:29:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 18:29:52,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 18:29:52,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 18:29:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 18:29:52,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 18:29:52,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 18:29:52,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 18:29:52,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 18:29:52,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 18:29:52,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 18:29:52,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 18:29:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 18:29:52,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 18:29:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 18:29:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 18:29:52,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-01-31 18:29:52,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-01-31 18:29:52,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 18:29:52,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 18:29:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 18:29:52,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-01-31 18:29:52,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 18:29:52,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 18:29:52,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-01-31 18:29:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-01-31 18:29:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 18:29:52,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 18:29:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 18:29:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-01-31 18:29:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-01-31 18:29:52,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 18:29:52,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-01-31 18:29:52,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-01-31 18:29:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 18:29:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 18:29:52,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 18:29:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-01-31 18:29:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-01-31 18:29:52,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-01-31 18:29:52,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-01-31 18:29:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-01-31 18:29:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 18:29:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-01-31 18:29:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 18:29:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-01-31 18:29:52,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-01-31 18:29:52,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:29:52,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:29:52,968 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:29:52,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141484327] [2022-01-31 18:29:52,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [141484327] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:29:52,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:29:52,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [110] imperfect sequences [] total 110 [2022-01-31 18:29:52,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21014749] [2022-01-31 18:29:52,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:29:52,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2022-01-31 18:29:52,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:29:52,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2022-01-31 18:29:52,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2975, Invalid=9015, Unknown=0, NotChecked=0, Total=11990 [2022-01-31 18:29:52,970 INFO L87 Difference]: Start difference. First operand 433 states and 434 transitions. Second operand has 110 states, 110 states have (on average 1.5363636363636364) internal successors, (169), 109 states have internal predecessors, (169), 54 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-01-31 18:29:55,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:29:55,389 INFO L93 Difference]: Finished difference Result 813 states and 816 transitions. [2022-01-31 18:29:55,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-01-31 18:29:55,390 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 1.5363636363636364) internal successors, (169), 109 states have internal predecessors, (169), 54 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Word has length 430 [2022-01-31 18:29:55,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:29:55,391 INFO L225 Difference]: With dead ends: 813 [2022-01-31 18:29:55,391 INFO L226 Difference]: Without dead ends: 438 [2022-01-31 18:29:55,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5773 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=5891, Invalid=20515, Unknown=0, NotChecked=0, Total=26406 [2022-01-31 18:29:55,393 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 395 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 2686 mSolverCounterSat, 930 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 3616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 930 IncrementalHoareTripleChecker+Valid, 2686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:29:55,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [448 Valid, 422 Invalid, 3616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [930 Valid, 2686 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 18:29:55,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-01-31 18:29:55,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 434. [2022-01-31 18:29:55,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 324 states have (on average 1.0061728395061729) internal successors, (326), 325 states have internal predecessors, (326), 55 states have call successors, (55), 55 states have call predecessors, (55), 54 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2022-01-31 18:29:55,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 435 transitions. [2022-01-31 18:29:55,588 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 435 transitions. Word has length 430 [2022-01-31 18:29:55,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:29:55,589 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 435 transitions. [2022-01-31 18:29:55,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 1.5363636363636364) internal successors, (169), 109 states have internal predecessors, (169), 54 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-01-31 18:29:55,589 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 435 transitions. [2022-01-31 18:29:55,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2022-01-31 18:29:55,590 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:29:55,590 INFO L514 BasicCegarLoop]: trace histogram [53, 53, 53, 53, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:29:55,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-01-31 18:29:55,590 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:29:55,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:29:55,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1585952608, now seen corresponding path program 104 times [2022-01-31 18:29:55,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:29:55,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583856530] [2022-01-31 18:29:55,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:29:55,593 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:29:55,593 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:29:55,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:29:55,596 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:29:55,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:30:00,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 18:30:00,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 18:30:00,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 18:30:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 18:30:00,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 18:30:00,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 18:30:00,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 18:30:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 18:30:00,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 18:30:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 18:30:00,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 18:30:00,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 18:30:00,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 18:30:00,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 18:30:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-31 18:30:00,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-01-31 18:30:00,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 18:30:00,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 18:30:00,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 18:30:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-01-31 18:30:00,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 18:30:00,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 18:30:00,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-01-31 18:30:00,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-01-31 18:30:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 18:30:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 18:30:00,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 18:30:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-01-31 18:30:00,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 18:30:00,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 18:30:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-01-31 18:30:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-01-31 18:30:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 18:30:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 18:30:00,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 18:30:00,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-01-31 18:30:00,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-01-31 18:30:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 18:30:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-01-31 18:30:00,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-01-31 18:30:00,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 18:30:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 18:30:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 18:30:00,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-01-31 18:30:00,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-01-31 18:30:00,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-01-31 18:30:00,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2022-01-31 18:30:00,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-01-31 18:30:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 18:30:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-01-31 18:30:00,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 18:30:00,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-01-31 18:30:00,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:00,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:30:00,659 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:30:00,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583856530] [2022-01-31 18:30:00,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1583856530] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:30:00,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:30:00,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [113] imperfect sequences [] total 113 [2022-01-31 18:30:00,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069282705] [2022-01-31 18:30:00,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:30:00,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2022-01-31 18:30:00,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:30:00,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2022-01-31 18:30:00,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=12432, Unknown=0, NotChecked=0, Total=12656 [2022-01-31 18:30:00,661 INFO L87 Difference]: Start difference. First operand 434 states and 435 transitions. Second operand has 113 states, 112 states have (on average 1.5178571428571428) internal successors, (170), 111 states have internal predecessors, (170), 54 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-01-31 18:30:12,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:30:12,135 INFO L93 Difference]: Finished difference Result 444 states and 445 transitions. [2022-01-31 18:30:12,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-01-31 18:30:12,135 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 112 states have (on average 1.5178571428571428) internal successors, (170), 111 states have internal predecessors, (170), 54 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Word has length 431 [2022-01-31 18:30:12,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:30:12,136 INFO L225 Difference]: With dead ends: 444 [2022-01-31 18:30:12,136 INFO L226 Difference]: Without dead ends: 442 [2022-01-31 18:30:12,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1596 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=453, Invalid=27939, Unknown=0, NotChecked=0, Total=28392 [2022-01-31 18:30:12,138 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 66 mSDsluCounter, 3525 mSDsCounter, 0 mSdLazyCounter, 27712 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 3646 SdHoareTripleChecker+Invalid, 27877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 27712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:30:12,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 3646 Invalid, 27877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 27712 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2022-01-31 18:30:12,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-01-31 18:30:12,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 441. [2022-01-31 18:30:12,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 329 states have (on average 1.006079027355623) internal successors, (331), 330 states have internal predecessors, (331), 56 states have call successors, (56), 56 states have call predecessors, (56), 55 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2022-01-31 18:30:12,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 442 transitions. [2022-01-31 18:30:12,344 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 442 transitions. Word has length 431 [2022-01-31 18:30:12,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:30:12,344 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 442 transitions. [2022-01-31 18:30:12,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 112 states have (on average 1.5178571428571428) internal successors, (170), 111 states have internal predecessors, (170), 54 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-01-31 18:30:12,344 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 442 transitions. [2022-01-31 18:30:12,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-01-31 18:30:12,346 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:30:12,346 INFO L514 BasicCegarLoop]: trace histogram [54, 54, 54, 53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:30:12,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-01-31 18:30:12,346 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:30:12,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:30:12,346 INFO L85 PathProgramCache]: Analyzing trace with hash 983113842, now seen corresponding path program 105 times [2022-01-31 18:30:12,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:30:12,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483877163] [2022-01-31 18:30:12,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:30:12,347 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:30:12,347 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:30:12,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:30:12,350 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:30:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:30:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 18:30:15,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 18:30:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 18:30:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 18:30:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 18:30:15,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 18:30:15,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 18:30:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 18:30:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 18:30:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 18:30:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 18:30:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 18:30:15,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 18:30:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 18:30:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-31 18:30:15,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-01-31 18:30:15,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 18:30:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 18:30:15,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 18:30:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-01-31 18:30:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 18:30:15,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 18:30:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-01-31 18:30:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-01-31 18:30:15,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 18:30:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 18:30:15,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 18:30:15,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-01-31 18:30:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 18:30:15,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 18:30:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-01-31 18:30:15,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-01-31 18:30:15,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 18:30:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 18:30:15,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 18:30:15,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-01-31 18:30:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-01-31 18:30:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 18:30:15,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-01-31 18:30:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-01-31 18:30:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 18:30:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 18:30:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 18:30:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-01-31 18:30:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-01-31 18:30:15,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-01-31 18:30:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2022-01-31 18:30:15,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-01-31 18:30:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 18:30:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-01-31 18:30:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 18:30:15,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-01-31 18:30:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2022-01-31 18:30:15,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:15,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:30:15,066 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:30:15,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483877163] [2022-01-31 18:30:15,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [483877163] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:30:15,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:30:15,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [112] imperfect sequences [] total 112 [2022-01-31 18:30:15,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351709818] [2022-01-31 18:30:15,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:30:15,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2022-01-31 18:30:15,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:30:15,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2022-01-31 18:30:15,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3085, Invalid=9347, Unknown=0, NotChecked=0, Total=12432 [2022-01-31 18:30:15,069 INFO L87 Difference]: Start difference. First operand 441 states and 442 transitions. Second operand has 112 states, 112 states have (on average 1.5357142857142858) internal successors, (172), 111 states have internal predecessors, (172), 55 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-01-31 18:30:17,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:30:17,456 INFO L93 Difference]: Finished difference Result 828 states and 831 transitions. [2022-01-31 18:30:17,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-01-31 18:30:17,457 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 1.5357142857142858) internal successors, (172), 111 states have internal predecessors, (172), 55 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Word has length 438 [2022-01-31 18:30:17,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:30:17,458 INFO L225 Difference]: With dead ends: 828 [2022-01-31 18:30:17,458 INFO L226 Difference]: Without dead ends: 446 [2022-01-31 18:30:17,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5990 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=6110, Invalid=21280, Unknown=0, NotChecked=0, Total=27390 [2022-01-31 18:30:17,459 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 394 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 2559 mSolverCounterSat, 930 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 3489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 930 IncrementalHoareTripleChecker+Valid, 2559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:30:17,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [448 Valid, 539 Invalid, 3489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [930 Valid, 2559 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 18:30:17,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-01-31 18:30:17,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 442. [2022-01-31 18:30:17,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 330 states have (on average 1.006060606060606) internal successors, (332), 331 states have internal predecessors, (332), 56 states have call successors, (56), 56 states have call predecessors, (56), 55 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2022-01-31 18:30:17,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 443 transitions. [2022-01-31 18:30:17,659 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 443 transitions. Word has length 438 [2022-01-31 18:30:17,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:30:17,659 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 443 transitions. [2022-01-31 18:30:17,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 112 states have (on average 1.5357142857142858) internal successors, (172), 111 states have internal predecessors, (172), 55 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-01-31 18:30:17,659 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 443 transitions. [2022-01-31 18:30:17,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2022-01-31 18:30:17,660 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:30:17,661 INFO L514 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:30:17,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-01-31 18:30:17,661 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:30:17,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:30:17,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1870256259, now seen corresponding path program 106 times [2022-01-31 18:30:17,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:30:17,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984897322] [2022-01-31 18:30:17,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:30:17,662 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:30:17,662 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:30:17,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:30:17,665 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:30:17,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:30:22,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-31 18:30:22,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 18:30:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 18:30:22,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 18:30:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 18:30:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 18:30:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 18:30:22,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 18:30:22,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-31 18:30:22,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:30:22,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 18:30:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:30:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 18:30:22,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 18:30:22,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 18:30:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 18:30:22,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-01-31 18:30:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 18:30:22,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 18:30:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 18:30:22,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-01-31 18:30:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 18:30:22,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 18:30:22,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-01-31 18:30:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-01-31 18:30:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 18:30:22,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 18:30:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 18:30:22,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-01-31 18:30:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 18:30:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 18:30:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-01-31 18:30:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-01-31 18:30:22,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 18:30:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 18:30:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 18:30:22,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-01-31 18:30:22,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-01-31 18:30:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 18:30:22,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-01-31 18:30:22,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-01-31 18:30:22,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 18:30:22,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 18:30:22,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 18:30:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-01-31 18:30:22,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-01-31 18:30:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-01-31 18:30:22,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2022-01-31 18:30:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-01-31 18:30:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 18:30:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-01-31 18:30:22,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 18:30:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-01-31 18:30:22,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:22,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:30:22,413 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:30:22,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984897322] [2022-01-31 18:30:22,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [984897322] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:30:22,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:30:22,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [115] imperfect sequences [] total 115 [2022-01-31 18:30:22,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809522700] [2022-01-31 18:30:22,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:30:22,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2022-01-31 18:30:22,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:30:22,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2022-01-31 18:30:22,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=12882, Unknown=0, NotChecked=0, Total=13110 [2022-01-31 18:30:22,414 INFO L87 Difference]: Start difference. First operand 442 states and 443 transitions. Second operand has 115 states, 114 states have (on average 1.5175438596491229) internal successors, (173), 113 states have internal predecessors, (173), 55 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-01-31 18:30:33,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:30:33,862 INFO L93 Difference]: Finished difference Result 452 states and 453 transitions. [2022-01-31 18:30:33,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-01-31 18:30:33,862 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 114 states have (on average 1.5175438596491229) internal successors, (173), 113 states have internal predecessors, (173), 55 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Word has length 439 [2022-01-31 18:30:33,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:30:33,863 INFO L225 Difference]: With dead ends: 452 [2022-01-31 18:30:33,863 INFO L226 Difference]: Without dead ends: 450 [2022-01-31 18:30:33,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1653 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=461, Invalid=28951, Unknown=0, NotChecked=0, Total=29412 [2022-01-31 18:30:33,865 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 67 mSDsluCounter, 3645 mSDsCounter, 0 mSdLazyCounter, 28720 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 3768 SdHoareTripleChecker+Invalid, 28888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 28720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-01-31 18:30:33,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 3768 Invalid, 28888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 28720 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-01-31 18:30:33,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-01-31 18:30:34,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 449. [2022-01-31 18:30:34,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 335 states have (on average 1.0059701492537314) internal successors, (337), 336 states have internal predecessors, (337), 57 states have call successors, (57), 57 states have call predecessors, (57), 56 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2022-01-31 18:30:34,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 450 transitions. [2022-01-31 18:30:34,070 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 450 transitions. Word has length 439 [2022-01-31 18:30:34,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:30:34,070 INFO L470 AbstractCegarLoop]: Abstraction has 449 states and 450 transitions. [2022-01-31 18:30:34,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 114 states have (on average 1.5175438596491229) internal successors, (173), 113 states have internal predecessors, (173), 55 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-01-31 18:30:34,070 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 450 transitions. [2022-01-31 18:30:34,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2022-01-31 18:30:34,071 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:30:34,072 INFO L514 BasicCegarLoop]: trace histogram [55, 55, 55, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:30:34,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-01-31 18:30:34,072 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:30:34,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:30:34,072 INFO L85 PathProgramCache]: Analyzing trace with hash -805764625, now seen corresponding path program 107 times [2022-01-31 18:30:34,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:30:34,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969385125] [2022-01-31 18:30:34,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:30:34,073 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:30:34,073 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:30:34,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:30:34,076 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:30:34,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:30:36,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-31 18:30:36,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 18:30:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 18:30:36,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 18:30:36,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 18:30:36,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 18:30:36,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 18:30:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 18:30:36,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-31 18:30:36,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:30:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 18:30:36,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:30:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 18:30:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 18:30:36,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 18:30:36,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 18:30:36,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-01-31 18:30:36,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 18:30:36,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 18:30:36,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 18:30:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-01-31 18:30:36,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 18:30:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 18:30:36,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-01-31 18:30:36,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-01-31 18:30:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 18:30:36,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 18:30:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 18:30:36,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-01-31 18:30:36,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 18:30:36,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 18:30:36,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-01-31 18:30:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-01-31 18:30:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 18:30:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 18:30:36,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 18:30:36,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-01-31 18:30:36,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-01-31 18:30:36,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 18:30:36,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-01-31 18:30:36,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-01-31 18:30:36,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 18:30:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 18:30:36,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 18:30:36,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-01-31 18:30:36,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-01-31 18:30:36,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-01-31 18:30:36,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2022-01-31 18:30:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-01-31 18:30:36,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 18:30:36,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-01-31 18:30:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 18:30:36,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-01-31 18:30:36,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2022-01-31 18:30:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:36,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:30:36,903 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:30:36,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969385125] [2022-01-31 18:30:36,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [969385125] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:30:36,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:30:36,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [114] imperfect sequences [] total 114 [2022-01-31 18:30:36,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098139603] [2022-01-31 18:30:36,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:30:36,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2022-01-31 18:30:36,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:30:36,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2022-01-31 18:30:36,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3197, Invalid=9685, Unknown=0, NotChecked=0, Total=12882 [2022-01-31 18:30:36,905 INFO L87 Difference]: Start difference. First operand 449 states and 450 transitions. Second operand has 114 states, 114 states have (on average 1.5350877192982457) internal successors, (175), 113 states have internal predecessors, (175), 56 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-01-31 18:30:39,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:30:39,321 INFO L93 Difference]: Finished difference Result 843 states and 846 transitions. [2022-01-31 18:30:39,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-01-31 18:30:39,322 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 1.5350877192982457) internal successors, (175), 113 states have internal predecessors, (175), 56 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Word has length 446 [2022-01-31 18:30:39,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:30:39,323 INFO L225 Difference]: With dead ends: 843 [2022-01-31 18:30:39,323 INFO L226 Difference]: Without dead ends: 454 [2022-01-31 18:30:39,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6211 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=6333, Invalid=22059, Unknown=0, NotChecked=0, Total=28392 [2022-01-31 18:30:39,325 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 465 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 2373 mSolverCounterSat, 1075 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 3448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1075 IncrementalHoareTripleChecker+Valid, 2373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:30:39,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [520 Valid, 371 Invalid, 3448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1075 Valid, 2373 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 18:30:39,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-01-31 18:30:39,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 450. [2022-01-31 18:30:39,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 336 states have (on average 1.005952380952381) internal successors, (338), 337 states have internal predecessors, (338), 57 states have call successors, (57), 57 states have call predecessors, (57), 56 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2022-01-31 18:30:39,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 451 transitions. [2022-01-31 18:30:39,538 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 451 transitions. Word has length 446 [2022-01-31 18:30:39,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:30:39,538 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 451 transitions. [2022-01-31 18:30:39,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 1.5350877192982457) internal successors, (175), 113 states have internal predecessors, (175), 56 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-01-31 18:30:39,539 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 451 transitions. [2022-01-31 18:30:39,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2022-01-31 18:30:39,540 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:30:39,540 INFO L514 BasicCegarLoop]: trace histogram [55, 55, 55, 55, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:30:39,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-01-31 18:30:39,540 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:30:39,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:30:39,540 INFO L85 PathProgramCache]: Analyzing trace with hash 757930240, now seen corresponding path program 108 times [2022-01-31 18:30:39,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:30:39,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493677256] [2022-01-31 18:30:39,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:30:39,541 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:30:39,541 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:30:39,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:30:39,545 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:30:39,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:30:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-31 18:30:44,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-31 18:30:44,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 18:30:44,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 18:30:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 18:30:44,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 18:30:44,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 18:30:44,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 18:30:44,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 18:30:44,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-31 18:30:44,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 18:30:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 18:30:44,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 18:30:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 18:30:44,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 18:30:44,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 18:30:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 18:30:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 18:30:44,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 18:30:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 18:30:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 18:30:44,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-01-31 18:30:44,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 18:30:44,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 18:30:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-01-31 18:30:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-01-31 18:30:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 18:30:44,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 18:30:44,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 18:30:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-01-31 18:30:44,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 18:30:44,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 18:30:44,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-01-31 18:30:44,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-01-31 18:30:44,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 18:30:44,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 18:30:44,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 18:30:44,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-01-31 18:30:44,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-01-31 18:30:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 18:30:44,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-01-31 18:30:44,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-01-31 18:30:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 18:30:44,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 18:30:44,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 18:30:44,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-01-31 18:30:44,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-01-31 18:30:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-01-31 18:30:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2022-01-31 18:30:44,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-01-31 18:30:44,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-01-31 18:30:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-01-31 18:30:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 18:30:44,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-01-31 18:30:44,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:44,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:30:44,491 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:30:44,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493677256] [2022-01-31 18:30:44,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [493677256] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:30:44,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:30:44,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [117] imperfect sequences [] total 117 [2022-01-31 18:30:44,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261086093] [2022-01-31 18:30:44,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:30:44,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2022-01-31 18:30:44,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:30:44,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2022-01-31 18:30:44,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=13340, Unknown=0, NotChecked=0, Total=13572 [2022-01-31 18:30:44,493 INFO L87 Difference]: Start difference. First operand 450 states and 451 transitions. Second operand has 117 states, 116 states have (on average 1.5172413793103448) internal successors, (176), 115 states have internal predecessors, (176), 56 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-01-31 18:30:56,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:30:56,499 INFO L93 Difference]: Finished difference Result 460 states and 461 transitions. [2022-01-31 18:30:56,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-01-31 18:30:56,499 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 116 states have (on average 1.5172413793103448) internal successors, (176), 115 states have internal predecessors, (176), 56 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Word has length 447 [2022-01-31 18:30:56,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:30:56,500 INFO L225 Difference]: With dead ends: 460 [2022-01-31 18:30:56,500 INFO L226 Difference]: Without dead ends: 458 [2022-01-31 18:30:56,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1711 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=469, Invalid=29981, Unknown=0, NotChecked=0, Total=30450 [2022-01-31 18:30:56,502 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 68 mSDsluCounter, 3763 mSDsCounter, 0 mSdLazyCounter, 29626 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 3888 SdHoareTripleChecker+Invalid, 29797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 29626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:30:56,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 3888 Invalid, 29797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 29626 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2022-01-31 18:30:56,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2022-01-31 18:30:56,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 457. [2022-01-31 18:30:56,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 341 states have (on average 1.0058651026392962) internal successors, (343), 342 states have internal predecessors, (343), 58 states have call successors, (58), 58 states have call predecessors, (58), 57 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2022-01-31 18:30:56,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 458 transitions. [2022-01-31 18:30:56,722 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 458 transitions. Word has length 447 [2022-01-31 18:30:56,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:30:56,722 INFO L470 AbstractCegarLoop]: Abstraction has 457 states and 458 transitions. [2022-01-31 18:30:56,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 116 states have (on average 1.5172413793103448) internal successors, (176), 115 states have internal predecessors, (176), 56 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-01-31 18:30:56,722 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 458 transitions. [2022-01-31 18:30:56,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2022-01-31 18:30:56,724 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:30:56,724 INFO L514 BasicCegarLoop]: trace histogram [56, 56, 56, 55, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:30:56,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-01-31 18:30:56,724 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:30:56,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:30:56,724 INFO L85 PathProgramCache]: Analyzing trace with hash -686773550, now seen corresponding path program 109 times [2022-01-31 18:30:56,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:30:56,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407225127] [2022-01-31 18:30:56,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:30:56,725 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:30:56,725 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:30:56,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:30:56,729 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:30:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:30:59,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-31 18:30:59,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-31 18:30:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 18:30:59,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 18:30:59,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 18:30:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 18:30:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 18:30:59,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 18:30:59,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 18:30:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-31 18:30:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 18:30:59,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 18:30:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 18:30:59,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 18:30:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 18:30:59,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 18:30:59,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 18:30:59,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 18:30:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 18:30:59,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 18:30:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 18:30:59,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-01-31 18:30:59,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 18:30:59,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 18:30:59,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-01-31 18:30:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-01-31 18:30:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 18:30:59,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 18:30:59,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 18:30:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-01-31 18:30:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 18:30:59,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 18:30:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-01-31 18:30:59,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-01-31 18:30:59,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 18:30:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 18:30:59,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 18:30:59,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-01-31 18:30:59,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-01-31 18:30:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 18:30:59,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-01-31 18:30:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-01-31 18:30:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 18:30:59,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 18:30:59,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 18:30:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-01-31 18:30:59,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-01-31 18:30:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-01-31 18:30:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2022-01-31 18:30:59,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-01-31 18:30:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-01-31 18:30:59,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-01-31 18:30:59,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 18:30:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-01-31 18:30:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2022-01-31 18:30:59,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:30:59,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:30:59,663 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:30:59,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407225127] [2022-01-31 18:30:59,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1407225127] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:30:59,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:30:59,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [116] imperfect sequences [] total 116 [2022-01-31 18:30:59,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129957496] [2022-01-31 18:30:59,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:30:59,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2022-01-31 18:30:59,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:30:59,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2022-01-31 18:30:59,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3311, Invalid=10029, Unknown=0, NotChecked=0, Total=13340 [2022-01-31 18:30:59,666 INFO L87 Difference]: Start difference. First operand 457 states and 458 transitions. Second operand has 116 states, 116 states have (on average 1.5344827586206897) internal successors, (178), 115 states have internal predecessors, (178), 57 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-01-31 18:31:02,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:31:02,308 INFO L93 Difference]: Finished difference Result 858 states and 861 transitions. [2022-01-31 18:31:02,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-01-31 18:31:02,308 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 1.5344827586206897) internal successors, (178), 115 states have internal predecessors, (178), 57 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) Word has length 454 [2022-01-31 18:31:02,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:31:02,309 INFO L225 Difference]: With dead ends: 858 [2022-01-31 18:31:02,309 INFO L226 Difference]: Without dead ends: 462 [2022-01-31 18:31:02,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6436 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=6560, Invalid=22852, Unknown=0, NotChecked=0, Total=29412 [2022-01-31 18:31:02,311 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 432 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 2859 mSolverCounterSat, 1013 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 3872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1013 IncrementalHoareTripleChecker+Valid, 2859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:31:02,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [488 Valid, 439 Invalid, 3872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1013 Valid, 2859 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-31 18:31:02,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-01-31 18:31:02,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 458. [2022-01-31 18:31:02,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 342 states have (on average 1.0058479532163742) internal successors, (344), 343 states have internal predecessors, (344), 58 states have call successors, (58), 58 states have call predecessors, (58), 57 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2022-01-31 18:31:02,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 459 transitions. [2022-01-31 18:31:02,530 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 459 transitions. Word has length 454 [2022-01-31 18:31:02,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:31:02,531 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 459 transitions. [2022-01-31 18:31:02,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 116 states have (on average 1.5344827586206897) internal successors, (178), 115 states have internal predecessors, (178), 57 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-01-31 18:31:02,531 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 459 transitions. [2022-01-31 18:31:02,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2022-01-31 18:31:02,532 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:31:02,532 INFO L514 BasicCegarLoop]: trace histogram [56, 56, 56, 56, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:31:02,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-01-31 18:31:02,532 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:31:02,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:31:02,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1094115101, now seen corresponding path program 110 times [2022-01-31 18:31:02,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:31:02,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957432892] [2022-01-31 18:31:02,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:31:02,533 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:31:02,533 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:31:02,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:31:02,537 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:31:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:31:07,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 18:31:07,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 18:31:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 18:31:07,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 18:31:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 18:31:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 18:31:07,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 18:31:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 18:31:07,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 18:31:07,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 18:31:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 18:31:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 18:31:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 18:31:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 18:31:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 18:31:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 18:31:07,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 18:31:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 18:31:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 18:31:07,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 18:31:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 18:31:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 18:31:07,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-01-31 18:31:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 18:31:07,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 18:31:07,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-01-31 18:31:07,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-01-31 18:31:07,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 18:31:07,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 18:31:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 18:31:07,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-01-31 18:31:07,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 18:31:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 18:31:07,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-01-31 18:31:07,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-01-31 18:31:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 18:31:07,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 18:31:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 18:31:07,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-01-31 18:31:07,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-01-31 18:31:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 18:31:07,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-01-31 18:31:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-01-31 18:31:07,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 18:31:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:31:07,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 18:31:07,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-01-31 18:31:07,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-01-31 18:31:07,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-01-31 18:31:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-01-31 18:31:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-01-31 18:31:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-01-31 18:31:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-01-31 18:31:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 18:31:07,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-01-31 18:31:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:07,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:31:07,612 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:31:07,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957432892] [2022-01-31 18:31:07,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [957432892] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:31:07,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:31:07,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [119] imperfect sequences [] total 119 [2022-01-31 18:31:07,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876177068] [2022-01-31 18:31:07,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:31:07,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2022-01-31 18:31:07,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:31:07,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2022-01-31 18:31:07,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=13806, Unknown=0, NotChecked=0, Total=14042 [2022-01-31 18:31:07,614 INFO L87 Difference]: Start difference. First operand 458 states and 459 transitions. Second operand has 119 states, 118 states have (on average 1.5169491525423728) internal successors, (179), 117 states have internal predecessors, (179), 57 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-01-31 18:31:20,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:31:20,060 INFO L93 Difference]: Finished difference Result 468 states and 469 transitions. [2022-01-31 18:31:20,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-01-31 18:31:20,061 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 118 states have (on average 1.5169491525423728) internal successors, (179), 117 states have internal predecessors, (179), 57 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) Word has length 455 [2022-01-31 18:31:20,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:31:20,062 INFO L225 Difference]: With dead ends: 468 [2022-01-31 18:31:20,062 INFO L226 Difference]: Without dead ends: 466 [2022-01-31 18:31:20,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1770 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=477, Invalid=31029, Unknown=0, NotChecked=0, Total=31506 [2022-01-31 18:31:20,064 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 69 mSDsluCounter, 3891 mSDsCounter, 0 mSdLazyCounter, 30790 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 4018 SdHoareTripleChecker+Invalid, 30964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 30790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:31:20,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 4018 Invalid, 30964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 30790 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2022-01-31 18:31:20,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2022-01-31 18:31:20,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 465. [2022-01-31 18:31:20,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 347 states have (on average 1.005763688760807) internal successors, (349), 348 states have internal predecessors, (349), 59 states have call successors, (59), 59 states have call predecessors, (59), 58 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) [2022-01-31 18:31:20,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 466 transitions. [2022-01-31 18:31:20,290 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 466 transitions. Word has length 455 [2022-01-31 18:31:20,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:31:20,293 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 466 transitions. [2022-01-31 18:31:20,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 118 states have (on average 1.5169491525423728) internal successors, (179), 117 states have internal predecessors, (179), 57 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-01-31 18:31:20,293 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 466 transitions. [2022-01-31 18:31:20,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2022-01-31 18:31:20,294 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:31:20,294 INFO L514 BasicCegarLoop]: trace histogram [57, 57, 57, 56, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:31:20,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-01-31 18:31:20,294 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:31:20,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:31:20,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1025929841, now seen corresponding path program 111 times [2022-01-31 18:31:20,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:31:20,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203523707] [2022-01-31 18:31:20,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:31:20,295 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:31:20,296 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:31:20,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:31:20,299 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:31:20,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:31:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 18:31:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 18:31:23,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 18:31:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 18:31:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 18:31:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 18:31:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 18:31:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 18:31:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 18:31:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 18:31:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 18:31:23,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 18:31:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 18:31:23,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 18:31:23,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 18:31:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 18:31:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 18:31:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 18:31:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 18:31:23,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 18:31:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 18:31:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 18:31:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-01-31 18:31:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 18:31:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 18:31:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-01-31 18:31:23,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-01-31 18:31:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 18:31:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 18:31:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 18:31:23,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-01-31 18:31:23,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 18:31:23,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 18:31:23,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-01-31 18:31:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-01-31 18:31:23,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 18:31:23,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 18:31:23,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 18:31:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-01-31 18:31:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-01-31 18:31:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 18:31:23,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-01-31 18:31:23,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-01-31 18:31:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 18:31:23,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:31:23,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 18:31:23,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-01-31 18:31:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-01-31 18:31:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-01-31 18:31:23,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-01-31 18:31:23,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-01-31 18:31:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-01-31 18:31:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-01-31 18:31:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 18:31:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-01-31 18:31:23,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2022-01-31 18:31:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:23,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:31:23,412 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:31:23,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203523707] [2022-01-31 18:31:23,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [203523707] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:31:23,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:31:23,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [118] imperfect sequences [] total 118 [2022-01-31 18:31:23,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845886830] [2022-01-31 18:31:23,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:31:23,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2022-01-31 18:31:23,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:31:23,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2022-01-31 18:31:23,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3427, Invalid=10379, Unknown=0, NotChecked=0, Total=13806 [2022-01-31 18:31:23,414 INFO L87 Difference]: Start difference. First operand 465 states and 466 transitions. Second operand has 118 states, 118 states have (on average 1.5338983050847457) internal successors, (181), 117 states have internal predecessors, (181), 58 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-01-31 18:31:26,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:31:26,058 INFO L93 Difference]: Finished difference Result 873 states and 876 transitions. [2022-01-31 18:31:26,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-01-31 18:31:26,058 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 118 states have (on average 1.5338983050847457) internal successors, (181), 117 states have internal predecessors, (181), 58 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Word has length 462 [2022-01-31 18:31:26,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:31:26,060 INFO L225 Difference]: With dead ends: 873 [2022-01-31 18:31:26,060 INFO L226 Difference]: Without dead ends: 470 [2022-01-31 18:31:26,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6665 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=6791, Invalid=23659, Unknown=0, NotChecked=0, Total=30450 [2022-01-31 18:31:26,062 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 481 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 2658 mSolverCounterSat, 1117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 3775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1117 IncrementalHoareTripleChecker+Valid, 2658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:31:26,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [538 Valid, 507 Invalid, 3775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1117 Valid, 2658 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 18:31:26,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2022-01-31 18:31:26,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 466. [2022-01-31 18:31:26,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 348 states have (on average 1.0057471264367817) internal successors, (350), 349 states have internal predecessors, (350), 59 states have call successors, (59), 59 states have call predecessors, (59), 58 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) [2022-01-31 18:31:26,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 467 transitions. [2022-01-31 18:31:26,298 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 467 transitions. Word has length 462 [2022-01-31 18:31:26,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:31:26,298 INFO L470 AbstractCegarLoop]: Abstraction has 466 states and 467 transitions. [2022-01-31 18:31:26,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 118 states have (on average 1.5338983050847457) internal successors, (181), 117 states have internal predecessors, (181), 58 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-01-31 18:31:26,298 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 467 transitions. [2022-01-31 18:31:26,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2022-01-31 18:31:26,300 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:31:26,300 INFO L514 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:31:26,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-01-31 18:31:26,300 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:31:26,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:31:26,300 INFO L85 PathProgramCache]: Analyzing trace with hash -699964768, now seen corresponding path program 112 times [2022-01-31 18:31:26,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:31:26,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101685465] [2022-01-31 18:31:26,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:31:26,301 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:31:26,301 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:31:26,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:31:26,305 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:31:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:31,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:31:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:31,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 18:31:31,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:31,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:31:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:31,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:31:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:31,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 18:31:31,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:31,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 18:31:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:31,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 18:31:31,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:31,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 18:31:31,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:31,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 18:31:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:31,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 18:31:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:31,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 18:31:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:31,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 18:31:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:31,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-31 18:31:31,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:31,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 18:31:31,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:31,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 18:31:31,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:31,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 18:31:32,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 18:31:32,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 18:31:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 18:31:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-01-31 18:31:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-01-31 18:31:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 18:31:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 18:31:32,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 18:31:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-01-31 18:31:32,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 18:31:32,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 18:31:32,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-01-31 18:31:32,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-01-31 18:31:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 18:31:32,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 18:31:32,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 18:31:32,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-01-31 18:31:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 18:31:32,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 18:31:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-01-31 18:31:32,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-01-31 18:31:32,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 18:31:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 18:31:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 18:31:32,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-01-31 18:31:32,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-01-31 18:31:32,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 18:31:32,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-01-31 18:31:32,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-01-31 18:31:32,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 18:31:32,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-01-31 18:31:32,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 18:31:32,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-01-31 18:31:32,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-01-31 18:31:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-01-31 18:31:32,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2022-01-31 18:31:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-01-31 18:31:32,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-01-31 18:31:32,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-01-31 18:31:32,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 18:31:32,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-01-31 18:31:32,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:32,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:31:32,052 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:31:32,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101685465] [2022-01-31 18:31:32,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [101685465] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:31:32,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:31:32,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [121] imperfect sequences [] total 121 [2022-01-31 18:31:32,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100100554] [2022-01-31 18:31:32,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:31:32,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2022-01-31 18:31:32,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:31:32,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2022-01-31 18:31:32,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=14280, Unknown=0, NotChecked=0, Total=14520 [2022-01-31 18:31:32,054 INFO L87 Difference]: Start difference. First operand 466 states and 467 transitions. Second operand has 121 states, 120 states have (on average 1.5166666666666666) internal successors, (182), 119 states have internal predecessors, (182), 58 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-01-31 18:31:45,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:31:45,311 INFO L93 Difference]: Finished difference Result 476 states and 477 transitions. [2022-01-31 18:31:45,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-01-31 18:31:45,312 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 120 states have (on average 1.5166666666666666) internal successors, (182), 119 states have internal predecessors, (182), 58 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Word has length 463 [2022-01-31 18:31:45,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:31:45,313 INFO L225 Difference]: With dead ends: 476 [2022-01-31 18:31:45,313 INFO L226 Difference]: Without dead ends: 474 [2022-01-31 18:31:45,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1830 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=485, Invalid=32095, Unknown=0, NotChecked=0, Total=32580 [2022-01-31 18:31:45,314 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 70 mSDsluCounter, 4013 mSDsCounter, 0 mSdLazyCounter, 31728 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 4142 SdHoareTripleChecker+Invalid, 31905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 31728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-01-31 18:31:45,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 4142 Invalid, 31905 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [177 Valid, 31728 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2022-01-31 18:31:45,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-01-31 18:31:45,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 473. [2022-01-31 18:31:45,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 353 states have (on average 1.0056657223796035) internal successors, (355), 354 states have internal predecessors, (355), 60 states have call successors, (60), 60 states have call predecessors, (60), 59 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-01-31 18:31:45,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 474 transitions. [2022-01-31 18:31:45,552 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 474 transitions. Word has length 463 [2022-01-31 18:31:45,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:31:45,553 INFO L470 AbstractCegarLoop]: Abstraction has 473 states and 474 transitions. [2022-01-31 18:31:45,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 120 states have (on average 1.5166666666666666) internal successors, (182), 119 states have internal predecessors, (182), 58 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-01-31 18:31:45,553 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 474 transitions. [2022-01-31 18:31:45,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2022-01-31 18:31:45,554 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:31:45,554 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 58, 57, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:31:45,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-01-31 18:31:45,555 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:31:45,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:31:45,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1086436046, now seen corresponding path program 113 times [2022-01-31 18:31:45,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:31:45,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506598929] [2022-01-31 18:31:45,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:31:45,556 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:31:45,556 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:31:45,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:31:45,559 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:31:45,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:31:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 18:31:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:31:48,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:31:48,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 18:31:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 18:31:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 18:31:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 18:31:48,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 18:31:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 18:31:48,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 18:31:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 18:31:48,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-31 18:31:48,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 18:31:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 18:31:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 18:31:48,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 18:31:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 18:31:48,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 18:31:48,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-01-31 18:31:48,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-01-31 18:31:48,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 18:31:48,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 18:31:48,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 18:31:48,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-01-31 18:31:48,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 18:31:48,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 18:31:48,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-01-31 18:31:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-01-31 18:31:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 18:31:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 18:31:48,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 18:31:48,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-01-31 18:31:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 18:31:48,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 18:31:48,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-01-31 18:31:48,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-01-31 18:31:48,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 18:31:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 18:31:48,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 18:31:48,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-01-31 18:31:48,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-01-31 18:31:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 18:31:48,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-01-31 18:31:48,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-01-31 18:31:48,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 18:31:48,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-01-31 18:31:48,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 18:31:48,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-01-31 18:31:48,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-01-31 18:31:48,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-01-31 18:31:48,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2022-01-31 18:31:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-01-31 18:31:48,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-01-31 18:31:48,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-01-31 18:31:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 18:31:48,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-01-31 18:31:48,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2022-01-31 18:31:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:48,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:31:48,721 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:31:48,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506598929] [2022-01-31 18:31:48,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [506598929] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:31:48,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:31:48,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [120] imperfect sequences [] total 120 [2022-01-31 18:31:48,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361801407] [2022-01-31 18:31:48,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:31:48,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2022-01-31 18:31:48,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:31:48,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2022-01-31 18:31:48,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3545, Invalid=10735, Unknown=0, NotChecked=0, Total=14280 [2022-01-31 18:31:48,724 INFO L87 Difference]: Start difference. First operand 473 states and 474 transitions. Second operand has 120 states, 120 states have (on average 1.5333333333333334) internal successors, (184), 119 states have internal predecessors, (184), 59 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-01-31 18:31:51,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:31:51,416 INFO L93 Difference]: Finished difference Result 888 states and 891 transitions. [2022-01-31 18:31:51,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-01-31 18:31:51,417 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 120 states have (on average 1.5333333333333334) internal successors, (184), 119 states have internal predecessors, (184), 59 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) Word has length 470 [2022-01-31 18:31:51,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:31:51,418 INFO L225 Difference]: With dead ends: 888 [2022-01-31 18:31:51,418 INFO L226 Difference]: Without dead ends: 478 [2022-01-31 18:31:51,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6898 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=7026, Invalid=24480, Unknown=0, NotChecked=0, Total=31506 [2022-01-31 18:31:51,420 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 416 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 2323 mSolverCounterSat, 989 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 3312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 989 IncrementalHoareTripleChecker+Valid, 2323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:31:51,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [474 Valid, 447 Invalid, 3312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [989 Valid, 2323 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 18:31:51,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2022-01-31 18:31:51,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 474. [2022-01-31 18:31:51,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 354 states have (on average 1.0056497175141244) internal successors, (356), 355 states have internal predecessors, (356), 60 states have call successors, (60), 60 states have call predecessors, (60), 59 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-01-31 18:31:51,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 475 transitions. [2022-01-31 18:31:51,653 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 475 transitions. Word has length 470 [2022-01-31 18:31:51,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:31:51,653 INFO L470 AbstractCegarLoop]: Abstraction has 474 states and 475 transitions. [2022-01-31 18:31:51,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 120 states have (on average 1.5333333333333334) internal successors, (184), 119 states have internal predecessors, (184), 59 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-01-31 18:31:51,653 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 475 transitions. [2022-01-31 18:31:51,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2022-01-31 18:31:51,655 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:31:51,655 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 58, 58, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:31:51,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-01-31 18:31:51,655 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:31:51,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:31:51,655 INFO L85 PathProgramCache]: Analyzing trace with hash -560823997, now seen corresponding path program 114 times [2022-01-31 18:31:51,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:31:51,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075273833] [2022-01-31 18:31:51,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:31:51,656 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:31:51,656 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:31:51,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:31:51,660 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:31:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:31:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-31 18:31:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 18:31:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 18:31:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 18:31:57,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 18:31:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 18:31:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 18:31:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 18:31:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 18:31:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 18:31:57,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 18:31:57,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 18:31:57,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-01-31 18:31:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 18:31:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 18:31:57,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 18:31:57,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 18:31:57,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 18:31:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 18:31:57,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-01-31 18:31:57,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-01-31 18:31:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 18:31:57,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 18:31:57,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 18:31:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-01-31 18:31:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 18:31:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 18:31:57,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-01-31 18:31:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-01-31 18:31:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 18:31:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 18:31:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 18:31:57,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-01-31 18:31:57,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 18:31:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 18:31:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-01-31 18:31:57,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-01-31 18:31:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 18:31:57,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 18:31:57,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 18:31:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-01-31 18:31:57,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-01-31 18:31:57,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-01-31 18:31:57,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-01-31 18:31:57,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-01-31 18:31:57,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 18:31:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-01-31 18:31:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 18:31:57,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-01-31 18:31:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-01-31 18:31:57,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-01-31 18:31:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2022-01-31 18:31:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-01-31 18:31:57,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-01-31 18:31:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-01-31 18:31:57,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 18:31:57,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-01-31 18:31:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:31:57,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:31:57,072 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:31:57,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075273833] [2022-01-31 18:31:57,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1075273833] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:31:57,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:31:57,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [123] imperfect sequences [] total 123 [2022-01-31 18:31:57,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287686129] [2022-01-31 18:31:57,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:31:57,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2022-01-31 18:31:57,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:31:57,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2022-01-31 18:31:57,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=14762, Unknown=0, NotChecked=0, Total=15006 [2022-01-31 18:31:57,075 INFO L87 Difference]: Start difference. First operand 474 states and 475 transitions. Second operand has 123 states, 122 states have (on average 1.5163934426229508) internal successors, (185), 121 states have internal predecessors, (185), 59 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-01-31 18:32:10,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:32:10,666 INFO L93 Difference]: Finished difference Result 484 states and 485 transitions. [2022-01-31 18:32:10,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-01-31 18:32:10,667 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 122 states have (on average 1.5163934426229508) internal successors, (185), 121 states have internal predecessors, (185), 59 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) Word has length 471 [2022-01-31 18:32:10,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:32:10,668 INFO L225 Difference]: With dead ends: 484 [2022-01-31 18:32:10,668 INFO L226 Difference]: Without dead ends: 482 [2022-01-31 18:32:10,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1891 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=493, Invalid=33179, Unknown=0, NotChecked=0, Total=33672 [2022-01-31 18:32:10,669 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 71 mSDsluCounter, 4145 mSDsCounter, 0 mSdLazyCounter, 32932 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 4276 SdHoareTripleChecker+Invalid, 33112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 32932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:32:10,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 4276 Invalid, 33112 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [180 Valid, 32932 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2022-01-31 18:32:10,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2022-01-31 18:32:10,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 481. [2022-01-31 18:32:10,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 359 states have (on average 1.0055710306406684) internal successors, (361), 360 states have internal predecessors, (361), 61 states have call successors, (61), 61 states have call predecessors, (61), 60 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2022-01-31 18:32:10,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 482 transitions. [2022-01-31 18:32:10,911 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 482 transitions. Word has length 471 [2022-01-31 18:32:10,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:32:10,911 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 482 transitions. [2022-01-31 18:32:10,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 122 states have (on average 1.5163934426229508) internal successors, (185), 121 states have internal predecessors, (185), 59 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-01-31 18:32:10,911 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 482 transitions. [2022-01-31 18:32:10,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2022-01-31 18:32:10,913 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:32:10,913 INFO L514 BasicCegarLoop]: trace histogram [59, 59, 59, 58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:32:10,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-01-31 18:32:10,913 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:32:10,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:32:10,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1681195311, now seen corresponding path program 115 times [2022-01-31 18:32:10,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:32:10,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643535727] [2022-01-31 18:32:10,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:32:10,914 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:32:10,914 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:32:10,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:32:10,918 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:32:10,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:32:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-31 18:32:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 18:32:14,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 18:32:14,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 18:32:14,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 18:32:14,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 18:32:14,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 18:32:14,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 18:32:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 18:32:14,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 18:32:14,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 18:32:14,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 18:32:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-01-31 18:32:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 18:32:14,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 18:32:14,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 18:32:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 18:32:14,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 18:32:14,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 18:32:14,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-01-31 18:32:14,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-01-31 18:32:14,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 18:32:14,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 18:32:14,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 18:32:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-01-31 18:32:14,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 18:32:14,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 18:32:14,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-01-31 18:32:14,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-01-31 18:32:14,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 18:32:14,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 18:32:14,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 18:32:14,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-01-31 18:32:14,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 18:32:14,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 18:32:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-01-31 18:32:14,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-01-31 18:32:14,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 18:32:14,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 18:32:14,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 18:32:14,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-01-31 18:32:14,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-01-31 18:32:14,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-01-31 18:32:14,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-01-31 18:32:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-01-31 18:32:14,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 18:32:14,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-01-31 18:32:14,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 18:32:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-01-31 18:32:14,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-01-31 18:32:14,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-01-31 18:32:14,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2022-01-31 18:32:14,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-01-31 18:32:14,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-01-31 18:32:14,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-01-31 18:32:14,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 18:32:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-01-31 18:32:14,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2022-01-31 18:32:14,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:14,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:32:14,241 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:32:14,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643535727] [2022-01-31 18:32:14,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [643535727] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:32:14,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:32:14,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [122] imperfect sequences [] total 122 [2022-01-31 18:32:14,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860067169] [2022-01-31 18:32:14,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:32:14,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2022-01-31 18:32:14,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:32:14,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2022-01-31 18:32:14,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3665, Invalid=11097, Unknown=0, NotChecked=0, Total=14762 [2022-01-31 18:32:14,243 INFO L87 Difference]: Start difference. First operand 481 states and 482 transitions. Second operand has 122 states, 122 states have (on average 1.5327868852459017) internal successors, (187), 121 states have internal predecessors, (187), 60 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2022-01-31 18:32:16,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:32:16,990 INFO L93 Difference]: Finished difference Result 903 states and 906 transitions. [2022-01-31 18:32:16,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-01-31 18:32:16,990 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 122 states have (on average 1.5327868852459017) internal successors, (187), 121 states have internal predecessors, (187), 60 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) Word has length 478 [2022-01-31 18:32:16,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:32:16,991 INFO L225 Difference]: With dead ends: 903 [2022-01-31 18:32:16,991 INFO L226 Difference]: Without dead ends: 486 [2022-01-31 18:32:16,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7135 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=7265, Invalid=25315, Unknown=0, NotChecked=0, Total=32580 [2022-01-31 18:32:16,993 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 513 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 2446 mSolverCounterSat, 1190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 3636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1190 IncrementalHoareTripleChecker+Valid, 2446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:32:16,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [572 Valid, 521 Invalid, 3636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1190 Valid, 2446 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 18:32:16,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2022-01-31 18:32:17,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 482. [2022-01-31 18:32:17,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 360 states have (on average 1.0055555555555555) internal successors, (362), 361 states have internal predecessors, (362), 61 states have call successors, (61), 61 states have call predecessors, (61), 60 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2022-01-31 18:32:17,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 483 transitions. [2022-01-31 18:32:17,251 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 483 transitions. Word has length 478 [2022-01-31 18:32:17,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:32:17,251 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 483 transitions. [2022-01-31 18:32:17,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 122 states have (on average 1.5327868852459017) internal successors, (187), 121 states have internal predecessors, (187), 60 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2022-01-31 18:32:17,251 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 483 transitions. [2022-01-31 18:32:17,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2022-01-31 18:32:17,253 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:32:17,253 INFO L514 BasicCegarLoop]: trace histogram [59, 59, 59, 59, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:32:17,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-01-31 18:32:17,253 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:32:17,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:32:17,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1365208000, now seen corresponding path program 116 times [2022-01-31 18:32:17,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:32:17,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549645604] [2022-01-31 18:32:17,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:32:17,254 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:32:17,255 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:32:17,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:32:17,259 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:32:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:22,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:32:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:22,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 18:32:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:22,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 18:32:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:22,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 18:32:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:22,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 18:32:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:22,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 18:32:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:22,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 18:32:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:22,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 18:32:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:22,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 18:32:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:22,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 18:32:22,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:22,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 18:32:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:22,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 18:32:22,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:22,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 18:32:22,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:22,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 18:32:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:22,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 18:32:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:22,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 18:32:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:22,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 18:32:22,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:22,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 18:32:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:22,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 18:32:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:22,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 18:32:22,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:22,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 18:32:22,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:22,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-01-31 18:32:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:23,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-01-31 18:32:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:23,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 18:32:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:23,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 18:32:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:23,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 18:32:23,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:23,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-01-31 18:32:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:23,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 18:32:23,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:23,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 18:32:23,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:23,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-01-31 18:32:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:23,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-01-31 18:32:23,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:23,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 18:32:23,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:23,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 18:32:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:23,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 18:32:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:23,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-01-31 18:32:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:23,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-01-31 18:32:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:23,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 18:32:23,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:23,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-01-31 18:32:23,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:23,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-01-31 18:32:23,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:23,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 18:32:23,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:23,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 18:32:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:23,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 18:32:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:23,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-01-31 18:32:23,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:23,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-01-31 18:32:23,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:23,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-01-31 18:32:23,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:23,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-01-31 18:32:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:23,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-01-31 18:32:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:23,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 18:32:23,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:23,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-01-31 18:32:23,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:23,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 18:32:23,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:23,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-01-31 18:32:23,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:23,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-01-31 18:32:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:23,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-01-31 18:32:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:23,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2022-01-31 18:32:23,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:23,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-01-31 18:32:23,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:23,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-01-31 18:32:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:23,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-01-31 18:32:23,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:23,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 18:32:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:23,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-01-31 18:32:23,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:23,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:32:23,061 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:32:23,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549645604] [2022-01-31 18:32:23,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [549645604] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:32:23,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:32:23,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [125] imperfect sequences [] total 125 [2022-01-31 18:32:23,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458647625] [2022-01-31 18:32:23,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:32:23,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2022-01-31 18:32:23,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:32:23,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2022-01-31 18:32:23,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=15252, Unknown=0, NotChecked=0, Total=15500 [2022-01-31 18:32:23,063 INFO L87 Difference]: Start difference. First operand 482 states and 483 transitions. Second operand has 125 states, 124 states have (on average 1.5161290322580645) internal successors, (188), 123 states have internal predecessors, (188), 60 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2022-01-31 18:32:36,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:32:36,964 INFO L93 Difference]: Finished difference Result 492 states and 493 transitions. [2022-01-31 18:32:36,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-01-31 18:32:36,964 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 124 states have (on average 1.5161290322580645) internal successors, (188), 123 states have internal predecessors, (188), 60 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) Word has length 479 [2022-01-31 18:32:36,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:32:36,965 INFO L225 Difference]: With dead ends: 492 [2022-01-31 18:32:36,965 INFO L226 Difference]: Without dead ends: 490 [2022-01-31 18:32:36,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1953 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=501, Invalid=34281, Unknown=0, NotChecked=0, Total=34782 [2022-01-31 18:32:36,967 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 72 mSDsluCounter, 4275 mSDsCounter, 0 mSdLazyCounter, 34030 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 4408 SdHoareTripleChecker+Invalid, 34213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 34030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:32:36,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 4408 Invalid, 34213 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [183 Valid, 34030 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2022-01-31 18:32:36,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2022-01-31 18:32:37,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 489. [2022-01-31 18:32:37,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 365 states have (on average 1.0054794520547945) internal successors, (367), 366 states have internal predecessors, (367), 62 states have call successors, (62), 62 states have call predecessors, (62), 61 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2022-01-31 18:32:37,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 490 transitions. [2022-01-31 18:32:37,233 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 490 transitions. Word has length 479 [2022-01-31 18:32:37,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:32:37,234 INFO L470 AbstractCegarLoop]: Abstraction has 489 states and 490 transitions. [2022-01-31 18:32:37,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 124 states have (on average 1.5161290322580645) internal successors, (188), 123 states have internal predecessors, (188), 60 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2022-01-31 18:32:37,234 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 490 transitions. [2022-01-31 18:32:37,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2022-01-31 18:32:37,235 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:32:37,235 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 60, 59, 59, 59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:32:37,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-01-31 18:32:37,236 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:32:37,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:32:37,236 INFO L85 PathProgramCache]: Analyzing trace with hash -2028468334, now seen corresponding path program 117 times [2022-01-31 18:32:37,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:32:37,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622650729] [2022-01-31 18:32:37,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:32:37,237 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:32:37,237 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:32:37,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:32:37,241 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:32:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:32:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 18:32:40,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 18:32:40,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 18:32:40,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 18:32:40,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 18:32:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 18:32:40,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 18:32:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 18:32:40,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 18:32:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 18:32:40,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 18:32:40,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 18:32:40,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 18:32:40,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 18:32:40,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 18:32:40,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 18:32:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 18:32:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 18:32:40,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 18:32:40,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 18:32:40,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-01-31 18:32:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-01-31 18:32:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 18:32:40,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 18:32:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 18:32:40,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-01-31 18:32:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 18:32:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 18:32:40,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-01-31 18:32:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-01-31 18:32:40,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 18:32:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 18:32:40,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 18:32:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-01-31 18:32:40,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-01-31 18:32:40,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 18:32:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-01-31 18:32:40,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-01-31 18:32:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 18:32:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 18:32:40,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 18:32:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-01-31 18:32:40,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-01-31 18:32:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-01-31 18:32:40,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-01-31 18:32:40,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-01-31 18:32:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 18:32:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-01-31 18:32:40,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 18:32:40,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-01-31 18:32:40,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-01-31 18:32:40,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-01-31 18:32:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2022-01-31 18:32:40,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-01-31 18:32:40,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-01-31 18:32:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-01-31 18:32:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 18:32:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-01-31 18:32:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2022-01-31 18:32:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:40,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:32:40,623 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:32:40,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622650729] [2022-01-31 18:32:40,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1622650729] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:32:40,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:32:40,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [124] imperfect sequences [] total 124 [2022-01-31 18:32:40,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599436410] [2022-01-31 18:32:40,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:32:40,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2022-01-31 18:32:40,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:32:40,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2022-01-31 18:32:40,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3787, Invalid=11465, Unknown=0, NotChecked=0, Total=15252 [2022-01-31 18:32:40,627 INFO L87 Difference]: Start difference. First operand 489 states and 490 transitions. Second operand has 124 states, 124 states have (on average 1.532258064516129) internal successors, (190), 123 states have internal predecessors, (190), 61 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-01-31 18:32:43,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:32:43,429 INFO L93 Difference]: Finished difference Result 918 states and 921 transitions. [2022-01-31 18:32:43,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-01-31 18:32:43,430 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 124 states have (on average 1.532258064516129) internal successors, (190), 123 states have internal predecessors, (190), 61 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) Word has length 486 [2022-01-31 18:32:43,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:32:43,431 INFO L225 Difference]: With dead ends: 918 [2022-01-31 18:32:43,431 INFO L226 Difference]: Without dead ends: 494 [2022-01-31 18:32:43,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7376 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=7508, Invalid=26164, Unknown=0, NotChecked=0, Total=33672 [2022-01-31 18:32:43,433 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 482 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 2455 mSolverCounterSat, 1130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 3585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1130 IncrementalHoareTripleChecker+Valid, 2455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:32:43,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [542 Valid, 399 Invalid, 3585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1130 Valid, 2455 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 18:32:43,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2022-01-31 18:32:43,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 490. [2022-01-31 18:32:43,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 366 states have (on average 1.005464480874317) internal successors, (368), 367 states have internal predecessors, (368), 62 states have call successors, (62), 62 states have call predecessors, (62), 61 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2022-01-31 18:32:43,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 491 transitions. [2022-01-31 18:32:43,681 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 491 transitions. Word has length 486 [2022-01-31 18:32:43,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:32:43,681 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 491 transitions. [2022-01-31 18:32:43,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 124 states have (on average 1.532258064516129) internal successors, (190), 123 states have internal predecessors, (190), 61 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-01-31 18:32:43,681 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 491 transitions. [2022-01-31 18:32:43,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2022-01-31 18:32:43,683 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:32:43,683 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 60, 60, 59, 59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:32:43,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-01-31 18:32:43,683 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:32:43,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:32:43,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1523317155, now seen corresponding path program 118 times [2022-01-31 18:32:43,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:32:43,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506838020] [2022-01-31 18:32:43,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:32:43,684 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:32:43,684 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:32:43,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:32:43,689 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:32:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:32:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 18:32:49,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 18:32:49,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 18:32:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 18:32:49,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 18:32:49,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 18:32:49,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 18:32:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 18:32:49,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 18:32:49,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 18:32:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 18:32:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 18:32:49,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 18:32:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-31 18:32:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-01-31 18:32:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 18:32:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 18:32:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 18:32:49,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-01-31 18:32:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 18:32:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 18:32:49,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-01-31 18:32:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-01-31 18:32:49,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 18:32:49,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 18:32:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 18:32:49,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-01-31 18:32:49,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 18:32:49,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 18:32:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-01-31 18:32:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-01-31 18:32:49,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 18:32:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 18:32:49,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 18:32:49,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-01-31 18:32:49,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-01-31 18:32:49,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 18:32:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-01-31 18:32:49,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-01-31 18:32:49,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 18:32:49,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 18:32:49,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 18:32:49,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-01-31 18:32:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-01-31 18:32:49,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-01-31 18:32:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2022-01-31 18:32:49,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-01-31 18:32:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 18:32:49,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-01-31 18:32:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 18:32:49,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-01-31 18:32:49,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2022-01-31 18:32:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-01-31 18:32:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2022-01-31 18:32:49,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-01-31 18:32:49,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-01-31 18:32:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-01-31 18:32:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 18:32:49,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-01-31 18:32:49,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:32:49,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:32:49,671 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:32:49,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506838020] [2022-01-31 18:32:49,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1506838020] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:32:49,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:32:49,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [127] imperfect sequences [] total 127 [2022-01-31 18:32:49,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935287938] [2022-01-31 18:32:49,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:32:49,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 127 states [2022-01-31 18:32:49,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:32:49,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2022-01-31 18:32:49,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=15750, Unknown=0, NotChecked=0, Total=16002 [2022-01-31 18:32:49,672 INFO L87 Difference]: Start difference. First operand 490 states and 491 transitions. Second operand has 127 states, 126 states have (on average 1.5158730158730158) internal successors, (191), 125 states have internal predecessors, (191), 61 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-01-31 18:33:04,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:04,093 INFO L93 Difference]: Finished difference Result 500 states and 501 transitions. [2022-01-31 18:33:04,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-01-31 18:33:04,093 INFO L78 Accepts]: Start accepts. Automaton has has 127 states, 126 states have (on average 1.5158730158730158) internal successors, (191), 125 states have internal predecessors, (191), 61 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) Word has length 487 [2022-01-31 18:33:04,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:04,094 INFO L225 Difference]: With dead ends: 500 [2022-01-31 18:33:04,094 INFO L226 Difference]: Without dead ends: 498 [2022-01-31 18:33:04,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2016 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=509, Invalid=35401, Unknown=0, NotChecked=0, Total=35910 [2022-01-31 18:33:04,097 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 73 mSDsluCounter, 4407 mSDsCounter, 0 mSdLazyCounter, 35146 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 4542 SdHoareTripleChecker+Invalid, 35332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 35146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:04,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 4542 Invalid, 35332 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [186 Valid, 35146 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2022-01-31 18:33:04,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2022-01-31 18:33:04,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 497. [2022-01-31 18:33:04,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 371 states have (on average 1.005390835579515) internal successors, (373), 372 states have internal predecessors, (373), 63 states have call successors, (63), 63 states have call predecessors, (63), 62 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2022-01-31 18:33:04,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 498 transitions. [2022-01-31 18:33:04,352 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 498 transitions. Word has length 487 [2022-01-31 18:33:04,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:04,352 INFO L470 AbstractCegarLoop]: Abstraction has 497 states and 498 transitions. [2022-01-31 18:33:04,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 127 states, 126 states have (on average 1.5158730158730158) internal successors, (191), 125 states have internal predecessors, (191), 61 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-01-31 18:33:04,352 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 498 transitions. [2022-01-31 18:33:04,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2022-01-31 18:33:04,354 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:04,354 INFO L514 BasicCegarLoop]: trace histogram [61, 61, 61, 60, 60, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:04,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-01-31 18:33:04,354 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:04,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:04,354 INFO L85 PathProgramCache]: Analyzing trace with hash -413836081, now seen corresponding path program 119 times [2022-01-31 18:33:04,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:04,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18059426] [2022-01-31 18:33:04,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:04,355 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:04,355 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:04,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:04,359 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 18:33:07,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 18:33:07,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 18:33:07,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 18:33:07,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 18:33:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 18:33:07,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 18:33:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 18:33:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 18:33:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 18:33:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 18:33:07,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 18:33:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 18:33:07,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-31 18:33:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-01-31 18:33:07,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 18:33:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 18:33:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 18:33:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-01-31 18:33:07,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 18:33:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 18:33:07,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-01-31 18:33:07,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-01-31 18:33:07,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 18:33:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 18:33:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 18:33:07,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-01-31 18:33:07,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 18:33:07,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 18:33:07,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-01-31 18:33:07,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-01-31 18:33:07,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 18:33:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 18:33:07,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 18:33:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-01-31 18:33:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-01-31 18:33:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 18:33:07,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-01-31 18:33:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-01-31 18:33:07,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 18:33:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 18:33:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 18:33:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-01-31 18:33:07,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-01-31 18:33:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-01-31 18:33:07,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2022-01-31 18:33:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-01-31 18:33:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 18:33:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-01-31 18:33:07,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 18:33:07,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-01-31 18:33:07,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2022-01-31 18:33:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-01-31 18:33:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2022-01-31 18:33:07,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-01-31 18:33:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-01-31 18:33:07,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-01-31 18:33:07,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 18:33:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-01-31 18:33:07,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2022-01-31 18:33:07,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:07,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:33:07,772 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:07,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18059426] [2022-01-31 18:33:07,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [18059426] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:07,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:07,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [126] imperfect sequences [] total 126 [2022-01-31 18:33:07,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410327834] [2022-01-31 18:33:07,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:07,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2022-01-31 18:33:07,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:07,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2022-01-31 18:33:07,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3911, Invalid=11839, Unknown=0, NotChecked=0, Total=15750 [2022-01-31 18:33:07,775 INFO L87 Difference]: Start difference. First operand 497 states and 498 transitions. Second operand has 126 states, 126 states have (on average 1.5317460317460319) internal successors, (193), 125 states have internal predecessors, (193), 62 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-01-31 18:33:10,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:10,533 INFO L93 Difference]: Finished difference Result 933 states and 936 transitions. [2022-01-31 18:33:10,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-01-31 18:33:10,534 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 126 states have (on average 1.5317460317460319) internal successors, (193), 125 states have internal predecessors, (193), 62 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) Word has length 494 [2022-01-31 18:33:10,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:10,535 INFO L225 Difference]: With dead ends: 933 [2022-01-31 18:33:10,535 INFO L226 Difference]: Without dead ends: 502 [2022-01-31 18:33:10,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7621 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=7755, Invalid=27027, Unknown=0, NotChecked=0, Total=34782 [2022-01-31 18:33:10,537 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 491 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 2392 mSolverCounterSat, 1146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 3538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1146 IncrementalHoareTripleChecker+Valid, 2392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:10,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [552 Valid, 598 Invalid, 3538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1146 Valid, 2392 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 18:33:10,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2022-01-31 18:33:10,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 498. [2022-01-31 18:33:10,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 372 states have (on average 1.0053763440860215) internal successors, (374), 373 states have internal predecessors, (374), 63 states have call successors, (63), 63 states have call predecessors, (63), 62 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2022-01-31 18:33:10,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 499 transitions. [2022-01-31 18:33:10,790 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 499 transitions. Word has length 494 [2022-01-31 18:33:10,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:10,790 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 499 transitions. [2022-01-31 18:33:10,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 126 states have (on average 1.5317460317460319) internal successors, (193), 125 states have internal predecessors, (193), 62 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-01-31 18:33:10,790 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 499 transitions. [2022-01-31 18:33:10,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2022-01-31 18:33:10,792 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:10,792 INFO L514 BasicCegarLoop]: trace histogram [61, 61, 61, 61, 60, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:10,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-01-31 18:33:10,792 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:10,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:10,792 INFO L85 PathProgramCache]: Analyzing trace with hash -511529504, now seen corresponding path program 120 times [2022-01-31 18:33:10,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:10,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000703008] [2022-01-31 18:33:10,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:10,793 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:10,793 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:10,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:10,797 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:10,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:17,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 18:33:17,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 18:33:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 18:33:17,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 18:33:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 18:33:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 18:33:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 18:33:17,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-31 18:33:17,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:33:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 18:33:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:33:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 18:33:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 18:33:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 18:33:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 18:33:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-01-31 18:33:17,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 18:33:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 18:33:17,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 18:33:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-01-31 18:33:17,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 18:33:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 18:33:17,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-01-31 18:33:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-01-31 18:33:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 18:33:17,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 18:33:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 18:33:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-01-31 18:33:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 18:33:17,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 18:33:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-01-31 18:33:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-01-31 18:33:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 18:33:17,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 18:33:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 18:33:17,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-01-31 18:33:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-01-31 18:33:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 18:33:17,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-01-31 18:33:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-01-31 18:33:17,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 18:33:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 18:33:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 18:33:17,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-01-31 18:33:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-01-31 18:33:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-01-31 18:33:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2022-01-31 18:33:17,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-01-31 18:33:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 18:33:17,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-01-31 18:33:17,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 18:33:17,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-01-31 18:33:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2022-01-31 18:33:17,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-01-31 18:33:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2022-01-31 18:33:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-01-31 18:33:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-01-31 18:33:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-01-31 18:33:17,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 18:33:17,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-01-31 18:33:17,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:17,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:33:17,218 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:17,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000703008] [2022-01-31 18:33:17,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1000703008] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:17,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:17,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [129] imperfect sequences [] total 129 [2022-01-31 18:33:17,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928715566] [2022-01-31 18:33:17,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:17,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2022-01-31 18:33:17,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:17,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2022-01-31 18:33:17,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=16256, Unknown=0, NotChecked=0, Total=16512 [2022-01-31 18:33:17,220 INFO L87 Difference]: Start difference. First operand 498 states and 499 transitions. Second operand has 129 states, 128 states have (on average 1.515625) internal successors, (194), 127 states have internal predecessors, (194), 62 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-01-31 18:33:32,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:32,363 INFO L93 Difference]: Finished difference Result 508 states and 509 transitions. [2022-01-31 18:33:32,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-01-31 18:33:32,364 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 128 states have (on average 1.515625) internal successors, (194), 127 states have internal predecessors, (194), 62 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) Word has length 495 [2022-01-31 18:33:32,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:32,365 INFO L225 Difference]: With dead ends: 508 [2022-01-31 18:33:32,365 INFO L226 Difference]: Without dead ends: 506 [2022-01-31 18:33:32,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2080 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=517, Invalid=36539, Unknown=0, NotChecked=0, Total=37056 [2022-01-31 18:33:32,367 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 74 mSDsluCounter, 4541 mSDsCounter, 0 mSdLazyCounter, 36280 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 4678 SdHoareTripleChecker+Invalid, 36469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 36280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:32,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 4678 Invalid, 36469 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [189 Valid, 36280 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2022-01-31 18:33:32,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2022-01-31 18:33:32,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 505. [2022-01-31 18:33:32,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 377 states have (on average 1.0053050397877985) internal successors, (379), 378 states have internal predecessors, (379), 64 states have call successors, (64), 64 states have call predecessors, (64), 63 states have return successors, (63), 62 states have call predecessors, (63), 63 states have call successors, (63) [2022-01-31 18:33:32,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 506 transitions. [2022-01-31 18:33:32,628 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 506 transitions. Word has length 495 [2022-01-31 18:33:32,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:32,628 INFO L470 AbstractCegarLoop]: Abstraction has 505 states and 506 transitions. [2022-01-31 18:33:32,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 128 states have (on average 1.515625) internal successors, (194), 127 states have internal predecessors, (194), 62 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-01-31 18:33:32,629 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 506 transitions. [2022-01-31 18:33:32,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2022-01-31 18:33:32,630 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:32,630 INFO L514 BasicCegarLoop]: trace histogram [62, 62, 62, 61, 61, 61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:32,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-01-31 18:33:32,631 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:32,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:32,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1676420622, now seen corresponding path program 121 times [2022-01-31 18:33:32,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:32,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089949475] [2022-01-31 18:33:32,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:32,632 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:32,632 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:32,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:32,636 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:32,691 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 0 [2022-01-31 18:33:36,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 18:33:36,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 18:33:36,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 18:33:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 18:33:36,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 18:33:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 18:33:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 18:33:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-31 18:33:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:33:36,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 18:33:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:33:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 18:33:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 18:33:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 18:33:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 18:33:36,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-01-31 18:33:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 18:33:36,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 18:33:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 18:33:36,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-01-31 18:33:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 18:33:36,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 18:33:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-01-31 18:33:36,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-01-31 18:33:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 18:33:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 18:33:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 18:33:36,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-01-31 18:33:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 18:33:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 18:33:36,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-01-31 18:33:36,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-01-31 18:33:36,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 18:33:36,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 18:33:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 18:33:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-01-31 18:33:36,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-01-31 18:33:36,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 18:33:36,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-01-31 18:33:36,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-01-31 18:33:36,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 18:33:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 18:33:36,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 18:33:36,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-01-31 18:33:36,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-01-31 18:33:36,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-01-31 18:33:36,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2022-01-31 18:33:36,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-01-31 18:33:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 18:33:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-01-31 18:33:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 18:33:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-01-31 18:33:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2022-01-31 18:33:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-01-31 18:33:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2022-01-31 18:33:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-01-31 18:33:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-01-31 18:33:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-01-31 18:33:36,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 18:33:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-01-31 18:33:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2022-01-31 18:33:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:36,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:33:36,181 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:36,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089949475] [2022-01-31 18:33:36,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2089949475] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:36,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:36,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [128] imperfect sequences [] total 128 [2022-01-31 18:33:36,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506734527] [2022-01-31 18:33:36,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:36,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2022-01-31 18:33:36,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:36,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2022-01-31 18:33:36,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4037, Invalid=12219, Unknown=0, NotChecked=0, Total=16256 [2022-01-31 18:33:36,184 INFO L87 Difference]: Start difference. First operand 505 states and 506 transitions. Second operand has 128 states, 128 states have (on average 1.53125) internal successors, (196), 127 states have internal predecessors, (196), 63 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-01-31 18:33:39,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:39,293 INFO L93 Difference]: Finished difference Result 948 states and 951 transitions. [2022-01-31 18:33:39,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-01-31 18:33:39,293 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 1.53125) internal successors, (196), 127 states have internal predecessors, (196), 63 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Word has length 502 [2022-01-31 18:33:39,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:39,294 INFO L225 Difference]: With dead ends: 948 [2022-01-31 18:33:39,294 INFO L226 Difference]: Without dead ends: 510 [2022-01-31 18:33:39,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7870 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=8006, Invalid=27904, Unknown=0, NotChecked=0, Total=35910 [2022-01-31 18:33:39,296 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 548 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 2944 mSolverCounterSat, 1258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 4202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1258 IncrementalHoareTripleChecker+Valid, 2944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:39,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [610 Valid, 415 Invalid, 4202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1258 Valid, 2944 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-31 18:33:39,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2022-01-31 18:33:39,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 506. [2022-01-31 18:33:39,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 378 states have (on average 1.0052910052910053) internal successors, (380), 379 states have internal predecessors, (380), 64 states have call successors, (64), 64 states have call predecessors, (64), 63 states have return successors, (63), 62 states have call predecessors, (63), 63 states have call successors, (63) [2022-01-31 18:33:39,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 507 transitions. [2022-01-31 18:33:39,589 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 507 transitions. Word has length 502 [2022-01-31 18:33:39,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:39,589 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 507 transitions. [2022-01-31 18:33:39,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 1.53125) internal successors, (196), 127 states have internal predecessors, (196), 63 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-01-31 18:33:39,590 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 507 transitions. [2022-01-31 18:33:39,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2022-01-31 18:33:39,591 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:39,591 INFO L514 BasicCegarLoop]: trace histogram [62, 62, 62, 62, 61, 61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:39,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-01-31 18:33:39,591 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:39,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:39,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1729394173, now seen corresponding path program 122 times [2022-01-31 18:33:39,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:39,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419825192] [2022-01-31 18:33:39,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:39,593 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:39,593 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:39,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:39,597 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:39,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:45,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-31 18:33:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 18:33:45,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 18:33:45,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 18:33:45,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 18:33:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 18:33:45,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 18:33:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 18:33:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-31 18:33:45,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 18:33:45,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 18:33:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 18:33:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 18:33:45,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 18:33:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 18:33:45,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 18:33:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 18:33:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 18:33:45,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 18:33:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 18:33:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-01-31 18:33:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 18:33:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 18:33:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-01-31 18:33:45,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-01-31 18:33:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 18:33:45,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 18:33:45,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 18:33:45,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-01-31 18:33:45,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 18:33:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 18:33:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-01-31 18:33:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-01-31 18:33:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 18:33:45,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 18:33:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 18:33:45,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-01-31 18:33:45,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-01-31 18:33:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 18:33:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-01-31 18:33:45,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-01-31 18:33:45,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 18:33:45,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 18:33:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 18:33:45,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-01-31 18:33:45,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-01-31 18:33:45,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-01-31 18:33:45,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2022-01-31 18:33:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-01-31 18:33:45,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-01-31 18:33:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-01-31 18:33:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 18:33:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-01-31 18:33:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2022-01-31 18:33:45,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-01-31 18:33:45,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2022-01-31 18:33:45,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-01-31 18:33:45,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-01-31 18:33:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-01-31 18:33:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 18:33:45,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-01-31 18:33:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:33:45,833 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:45,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419825192] [2022-01-31 18:33:45,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1419825192] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:45,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:45,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [131] imperfect sequences [] total 131 [2022-01-31 18:33:45,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851894801] [2022-01-31 18:33:45,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:45,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2022-01-31 18:33:45,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:45,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2022-01-31 18:33:45,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=16770, Unknown=0, NotChecked=0, Total=17030 [2022-01-31 18:33:45,835 INFO L87 Difference]: Start difference. First operand 506 states and 507 transitions. Second operand has 131 states, 130 states have (on average 1.5153846153846153) internal successors, (197), 129 states have internal predecessors, (197), 63 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-01-31 18:34:00,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:34:00,971 INFO L93 Difference]: Finished difference Result 516 states and 517 transitions. [2022-01-31 18:34:00,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-01-31 18:34:00,971 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 130 states have (on average 1.5153846153846153) internal successors, (197), 129 states have internal predecessors, (197), 63 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Word has length 503 [2022-01-31 18:34:00,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:34:00,972 INFO L225 Difference]: With dead ends: 516 [2022-01-31 18:34:00,972 INFO L226 Difference]: Without dead ends: 514 [2022-01-31 18:34:00,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2145 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=525, Invalid=37695, Unknown=0, NotChecked=0, Total=38220 [2022-01-31 18:34:00,974 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 75 mSDsluCounter, 4677 mSDsCounter, 0 mSdLazyCounter, 37432 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 4816 SdHoareTripleChecker+Invalid, 37624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 37432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:34:00,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 4816 Invalid, 37624 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [192 Valid, 37432 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2022-01-31 18:34:00,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-01-31 18:34:01,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 513. [2022-01-31 18:34:01,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 383 states have (on average 1.0052219321148825) internal successors, (385), 384 states have internal predecessors, (385), 65 states have call successors, (65), 65 states have call predecessors, (65), 64 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2022-01-31 18:34:01,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 514 transitions. [2022-01-31 18:34:01,251 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 514 transitions. Word has length 503 [2022-01-31 18:34:01,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:34:01,252 INFO L470 AbstractCegarLoop]: Abstraction has 513 states and 514 transitions. [2022-01-31 18:34:01,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 130 states have (on average 1.5153846153846153) internal successors, (197), 129 states have internal predecessors, (197), 63 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-01-31 18:34:01,252 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 514 transitions. [2022-01-31 18:34:01,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2022-01-31 18:34:01,254 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:34:01,254 INFO L514 BasicCegarLoop]: trace histogram [63, 63, 63, 62, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:34:01,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-01-31 18:34:01,254 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:34:01,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:34:01,254 INFO L85 PathProgramCache]: Analyzing trace with hash -167468945, now seen corresponding path program 123 times [2022-01-31 18:34:01,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:34:01,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1347391841] [2022-01-31 18:34:01,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:34:01,256 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:34:01,256 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:34:01,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:34:01,260 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:34:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:34:04,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-31 18:34:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 18:34:04,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 18:34:04,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 18:34:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 18:34:04,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 18:34:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 18:34:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 18:34:04,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-31 18:34:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 18:34:04,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 18:34:04,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 18:34:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 18:34:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 18:34:04,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 18:34:04,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 18:34:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 18:34:04,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 18:34:04,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 18:34:04,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 18:34:04,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-01-31 18:34:04,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 18:34:04,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 18:34:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-01-31 18:34:04,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-01-31 18:34:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 18:34:04,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 18:34:04,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 18:34:04,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-01-31 18:34:04,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 18:34:04,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 18:34:04,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-01-31 18:34:04,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-01-31 18:34:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 18:34:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 18:34:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 18:34:04,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-01-31 18:34:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-01-31 18:34:04,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 18:34:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-01-31 18:34:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-01-31 18:34:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 18:34:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 18:34:04,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 18:34:04,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-01-31 18:34:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-01-31 18:34:04,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-01-31 18:34:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2022-01-31 18:34:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-01-31 18:34:04,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-01-31 18:34:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-01-31 18:34:04,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 18:34:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-01-31 18:34:04,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2022-01-31 18:34:04,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-01-31 18:34:04,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2022-01-31 18:34:04,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-01-31 18:34:04,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-01-31 18:34:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-01-31 18:34:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 18:34:04,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-01-31 18:34:04,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2022-01-31 18:34:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:04,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:34:04,935 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:34:04,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1347391841] [2022-01-31 18:34:04,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1347391841] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:34:04,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:34:04,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [130] imperfect sequences [] total 130 [2022-01-31 18:34:04,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689722592] [2022-01-31 18:34:04,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:34:04,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2022-01-31 18:34:04,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:34:04,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2022-01-31 18:34:04,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4165, Invalid=12605, Unknown=0, NotChecked=0, Total=16770 [2022-01-31 18:34:04,937 INFO L87 Difference]: Start difference. First operand 513 states and 514 transitions. Second operand has 130 states, 130 states have (on average 1.5307692307692307) internal successors, (199), 129 states have internal predecessors, (199), 64 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-01-31 18:34:08,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:34:08,134 INFO L93 Difference]: Finished difference Result 963 states and 966 transitions. [2022-01-31 18:34:08,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-01-31 18:34:08,134 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 1.5307692307692307) internal successors, (199), 129 states have internal predecessors, (199), 64 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) Word has length 510 [2022-01-31 18:34:08,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:34:08,135 INFO L225 Difference]: With dead ends: 963 [2022-01-31 18:34:08,136 INFO L226 Difference]: Without dead ends: 518 [2022-01-31 18:34:08,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8123 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=8261, Invalid=28795, Unknown=0, NotChecked=0, Total=37056 [2022-01-31 18:34:08,137 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 591 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 3130 mSolverCounterSat, 1349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 4479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1349 IncrementalHoareTripleChecker+Valid, 3130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:34:08,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [654 Valid, 356 Invalid, 4479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1349 Valid, 3130 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-31 18:34:08,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2022-01-31 18:34:08,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 514. [2022-01-31 18:34:08,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 384 states have (on average 1.0052083333333333) internal successors, (386), 385 states have internal predecessors, (386), 65 states have call successors, (65), 65 states have call predecessors, (65), 64 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2022-01-31 18:34:08,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 515 transitions. [2022-01-31 18:34:08,409 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 515 transitions. Word has length 510 [2022-01-31 18:34:08,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:34:08,409 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 515 transitions. [2022-01-31 18:34:08,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 1.5307692307692307) internal successors, (199), 129 states have internal predecessors, (199), 64 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-01-31 18:34:08,409 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 515 transitions. [2022-01-31 18:34:08,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2022-01-31 18:34:08,411 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:34:08,411 INFO L514 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:34:08,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2022-01-31 18:34:08,411 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:34:08,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:34:08,411 INFO L85 PathProgramCache]: Analyzing trace with hash 280473472, now seen corresponding path program 124 times [2022-01-31 18:34:08,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:34:08,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533635829] [2022-01-31 18:34:08,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:34:08,412 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:34:08,412 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:34:08,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:34:08,416 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:34:08,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:34:14,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 18:34:14,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 18:34:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 18:34:14,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 18:34:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 18:34:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 18:34:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 18:34:14,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 18:34:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 18:34:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 18:34:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 18:34:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 18:34:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 18:34:14,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 18:34:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 18:34:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 18:34:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 18:34:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 18:34:14,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 18:34:14,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 18:34:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 18:34:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-01-31 18:34:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 18:34:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 18:34:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-01-31 18:34:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-01-31 18:34:14,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 18:34:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 18:34:14,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 18:34:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-01-31 18:34:14,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 18:34:14,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 18:34:14,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-01-31 18:34:14,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-01-31 18:34:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 18:34:14,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 18:34:14,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 18:34:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-01-31 18:34:14,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-01-31 18:34:14,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 18:34:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-01-31 18:34:14,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-01-31 18:34:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 18:34:14,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:34:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 18:34:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-01-31 18:34:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-01-31 18:34:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-01-31 18:34:14,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-01-31 18:34:14,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-01-31 18:34:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-01-31 18:34:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-01-31 18:34:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 18:34:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-01-31 18:34:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2022-01-31 18:34:14,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-01-31 18:34:14,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2022-01-31 18:34:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-01-31 18:34:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-01-31 18:34:14,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-01-31 18:34:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 18:34:14,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-01-31 18:34:14,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:14,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:34:14,781 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:34:14,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533635829] [2022-01-31 18:34:14,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [533635829] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:34:14,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:34:14,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [133] imperfect sequences [] total 133 [2022-01-31 18:34:14,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015167939] [2022-01-31 18:34:14,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:34:14,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 133 states [2022-01-31 18:34:14,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:34:14,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2022-01-31 18:34:14,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=17292, Unknown=0, NotChecked=0, Total=17556 [2022-01-31 18:34:14,783 INFO L87 Difference]: Start difference. First operand 514 states and 515 transitions. Second operand has 133 states, 132 states have (on average 1.5151515151515151) internal successors, (200), 131 states have internal predecessors, (200), 64 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-01-31 18:34:30,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:34:30,251 INFO L93 Difference]: Finished difference Result 524 states and 525 transitions. [2022-01-31 18:34:30,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2022-01-31 18:34:30,251 INFO L78 Accepts]: Start accepts. Automaton has has 133 states, 132 states have (on average 1.5151515151515151) internal successors, (200), 131 states have internal predecessors, (200), 64 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) Word has length 511 [2022-01-31 18:34:30,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:34:30,253 INFO L225 Difference]: With dead ends: 524 [2022-01-31 18:34:30,253 INFO L226 Difference]: Without dead ends: 522 [2022-01-31 18:34:30,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2211 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=533, Invalid=38869, Unknown=0, NotChecked=0, Total=39402 [2022-01-31 18:34:30,254 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 76 mSDsluCounter, 4811 mSDsCounter, 0 mSdLazyCounter, 38466 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 4952 SdHoareTripleChecker+Invalid, 38661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 38466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-01-31 18:34:30,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 4952 Invalid, 38661 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [195 Valid, 38466 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2022-01-31 18:34:30,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-01-31 18:34:30,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 521. [2022-01-31 18:34:30,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 389 states have (on average 1.0051413881748072) internal successors, (391), 390 states have internal predecessors, (391), 66 states have call successors, (66), 66 states have call predecessors, (66), 65 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2022-01-31 18:34:30,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 522 transitions. [2022-01-31 18:34:30,529 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 522 transitions. Word has length 511 [2022-01-31 18:34:30,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:34:30,529 INFO L470 AbstractCegarLoop]: Abstraction has 521 states and 522 transitions. [2022-01-31 18:34:30,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 133 states, 132 states have (on average 1.5151515151515151) internal successors, (200), 131 states have internal predecessors, (200), 64 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-01-31 18:34:30,529 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 522 transitions. [2022-01-31 18:34:30,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2022-01-31 18:34:30,531 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:34:30,531 INFO L514 BasicCegarLoop]: trace histogram [64, 64, 64, 63, 63, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:34:30,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-01-31 18:34:30,531 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:34:30,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:34:30,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1524120494, now seen corresponding path program 125 times [2022-01-31 18:34:30,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:34:30,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764474771] [2022-01-31 18:34:30,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:34:30,532 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:34:30,532 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:34:30,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:34:30,537 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:34:30,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:34:34,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 18:34:34,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 18:34:34,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 18:34:34,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 18:34:34,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 18:34:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 18:34:34,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 18:34:34,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 18:34:34,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 18:34:34,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 18:34:34,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 18:34:34,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 18:34:34,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 18:34:34,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 18:34:34,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 18:34:34,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 18:34:34,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 18:34:34,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 18:34:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 18:34:34,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 18:34:34,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 18:34:34,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-01-31 18:34:34,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 18:34:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 18:34:34,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-01-31 18:34:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-01-31 18:34:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 18:34:34,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 18:34:34,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 18:34:34,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-01-31 18:34:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 18:34:34,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 18:34:34,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-01-31 18:34:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-01-31 18:34:34,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 18:34:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 18:34:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 18:34:34,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-01-31 18:34:34,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-01-31 18:34:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 18:34:34,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-01-31 18:34:34,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-01-31 18:34:34,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 18:34:34,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:34:34,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 18:34:34,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-01-31 18:34:34,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-01-31 18:34:34,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-01-31 18:34:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-01-31 18:34:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-01-31 18:34:34,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-01-31 18:34:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-01-31 18:34:34,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 18:34:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-01-31 18:34:34,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2022-01-31 18:34:34,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-01-31 18:34:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2022-01-31 18:34:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-01-31 18:34:34,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-01-31 18:34:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-01-31 18:34:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 18:34:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-01-31 18:34:34,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2022-01-31 18:34:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:34:34,286 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:34:34,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764474771] [2022-01-31 18:34:34,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [764474771] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:34:34,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:34:34,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [132] imperfect sequences [] total 132 [2022-01-31 18:34:34,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427461839] [2022-01-31 18:34:34,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:34:34,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2022-01-31 18:34:34,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:34:34,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2022-01-31 18:34:34,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4295, Invalid=12997, Unknown=0, NotChecked=0, Total=17292 [2022-01-31 18:34:34,289 INFO L87 Difference]: Start difference. First operand 521 states and 522 transitions. Second operand has 132 states, 132 states have (on average 1.5303030303030303) internal successors, (202), 131 states have internal predecessors, (202), 65 states have call successors, (66), 3 states have call predecessors, (66), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-01-31 18:34:37,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:34:37,558 INFO L93 Difference]: Finished difference Result 978 states and 981 transitions. [2022-01-31 18:34:37,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2022-01-31 18:34:37,559 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 132 states have (on average 1.5303030303030303) internal successors, (202), 131 states have internal predecessors, (202), 65 states have call successors, (66), 3 states have call predecessors, (66), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) Word has length 518 [2022-01-31 18:34:37,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:34:37,560 INFO L225 Difference]: With dead ends: 978 [2022-01-31 18:34:37,560 INFO L226 Difference]: Without dead ends: 526 [2022-01-31 18:34:37,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8380 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=8520, Invalid=29700, Unknown=0, NotChecked=0, Total=38220 [2022-01-31 18:34:37,563 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 554 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 3350 mSolverCounterSat, 1287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 4637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1287 IncrementalHoareTripleChecker+Valid, 3350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-31 18:34:37,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [618 Valid, 501 Invalid, 4637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1287 Valid, 3350 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-31 18:34:37,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2022-01-31 18:34:37,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 522. [2022-01-31 18:34:37,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 390 states have (on average 1.005128205128205) internal successors, (392), 391 states have internal predecessors, (392), 66 states have call successors, (66), 66 states have call predecessors, (66), 65 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2022-01-31 18:34:37,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 523 transitions. [2022-01-31 18:34:37,846 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 523 transitions. Word has length 518 [2022-01-31 18:34:37,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:34:37,846 INFO L470 AbstractCegarLoop]: Abstraction has 522 states and 523 transitions. [2022-01-31 18:34:37,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 132 states have (on average 1.5303030303030303) internal successors, (202), 131 states have internal predecessors, (202), 65 states have call successors, (66), 3 states have call predecessors, (66), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-01-31 18:34:37,847 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 523 transitions. [2022-01-31 18:34:37,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2022-01-31 18:34:37,849 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:34:37,849 INFO L514 BasicCegarLoop]: trace histogram [64, 64, 64, 64, 63, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:34:37,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2022-01-31 18:34:37,851 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:34:37,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:34:37,852 INFO L85 PathProgramCache]: Analyzing trace with hash 937898595, now seen corresponding path program 126 times [2022-01-31 18:34:37,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:34:37,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64866117] [2022-01-31 18:34:37,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:34:37,855 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:34:37,855 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:34:37,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:34:37,860 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:34:38,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:34:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:34:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:34:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 18:34:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 18:34:44,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 18:34:44,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 18:34:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 18:34:44,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 18:34:44,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 18:34:44,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 18:34:44,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-31 18:34:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 18:34:44,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 18:34:44,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 18:34:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 18:34:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 18:34:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 18:34:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-01-31 18:34:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-01-31 18:34:44,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 18:34:44,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 18:34:44,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 18:34:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-01-31 18:34:44,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 18:34:44,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 18:34:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-01-31 18:34:44,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-01-31 18:34:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 18:34:44,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 18:34:44,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 18:34:44,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-01-31 18:34:44,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 18:34:44,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 18:34:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-01-31 18:34:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-01-31 18:34:44,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 18:34:44,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 18:34:44,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 18:34:44,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-01-31 18:34:44,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-01-31 18:34:44,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 18:34:44,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-01-31 18:34:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-01-31 18:34:44,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 18:34:44,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-01-31 18:34:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 18:34:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-01-31 18:34:44,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-01-31 18:34:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-01-31 18:34:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2022-01-31 18:34:44,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-01-31 18:34:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-01-31 18:34:44,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-01-31 18:34:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 18:34:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-01-31 18:34:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2022-01-31 18:34:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-01-31 18:34:44,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2022-01-31 18:34:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-01-31 18:34:44,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-01-31 18:34:44,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-01-31 18:34:44,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 18:34:44,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-01-31 18:34:44,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:44,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:34:44,468 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:34:44,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64866117] [2022-01-31 18:34:44,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [64866117] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:34:44,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:34:44,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [135] imperfect sequences [] total 135 [2022-01-31 18:34:44,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493132237] [2022-01-31 18:34:44,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:34:44,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 135 states [2022-01-31 18:34:44,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:34:44,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2022-01-31 18:34:44,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=17822, Unknown=0, NotChecked=0, Total=18090 [2022-01-31 18:34:44,470 INFO L87 Difference]: Start difference. First operand 522 states and 523 transitions. Second operand has 135 states, 134 states have (on average 1.5149253731343284) internal successors, (203), 133 states have internal predecessors, (203), 65 states have call successors, (66), 3 states have call predecessors, (66), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64)