/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/float-benchs/zonotope_3.c.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 22:55:50,045 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 22:55:50,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 22:55:50,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 22:55:50,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 22:55:50,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 22:55:50,109 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 22:55:50,110 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 22:55:50,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 22:55:50,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 22:55:50,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 22:55:50,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 22:55:50,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 22:55:50,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 22:55:50,125 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 22:55:50,127 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 22:55:50,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 22:55:50,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 22:55:50,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 22:55:50,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 22:55:50,156 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 22:55:50,165 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 22:55:50,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 22:55:50,166 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 22:55:50,166 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 22:55:50,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 22:55:50,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 22:55:50,167 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 22:55:50,167 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 22:55:50,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 22:55:50,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 22:55:50,167 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 22:55:50,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 22:55:50,167 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 22:55:50,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 22:55:50,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 22:55:50,168 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 22:55:50,168 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 22:55:50,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 22:55:50,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 22:55:50,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 22:55:50,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 22:55:50,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 22:55:50,169 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 22:55:50,169 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 22:55:50,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 22:55:50,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 22:55:50,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 22:55:50,450 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 22:55:50,450 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 22:55:50,452 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/zonotope_3.c.p+cfa-reducer.c [2022-01-31 22:55:50,519 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dd5c5c56/8f89896fdbc742e7bd921219f194c3ab/FLAG38d238153 [2022-01-31 22:55:50,907 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 22:55:50,907 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/zonotope_3.c.p+cfa-reducer.c [2022-01-31 22:55:50,913 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dd5c5c56/8f89896fdbc742e7bd921219f194c3ab/FLAG38d238153 [2022-01-31 22:55:51,320 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dd5c5c56/8f89896fdbc742e7bd921219f194c3ab [2022-01-31 22:55:51,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 22:55:51,324 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 22:55:51,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 22:55:51,327 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 22:55:51,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 22:55:51,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:55:51" (1/1) ... [2022-01-31 22:55:51,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b130cb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:51, skipping insertion in model container [2022-01-31 22:55:51,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:55:51" (1/1) ... [2022-01-31 22:55:51,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 22:55:51,361 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 22:55:51,498 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/zonotope_3.c.p+cfa-reducer.c[2717,2730] [2022-01-31 22:55:51,502 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 22:55:51,508 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 22:55:51,533 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/zonotope_3.c.p+cfa-reducer.c[2717,2730] [2022-01-31 22:55:51,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 22:55:51,576 INFO L208 MainTranslator]: Completed translation [2022-01-31 22:55:51,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:51 WrapperNode [2022-01-31 22:55:51,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 22:55:51,577 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 22:55:51,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 22:55:51,578 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 22:55:51,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:51" (1/1) ... [2022-01-31 22:55:51,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:51" (1/1) ... [2022-01-31 22:55:51,601 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:51" (1/1) ... [2022-01-31 22:55:51,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:51" (1/1) ... [2022-01-31 22:55:51,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:51" (1/1) ... [2022-01-31 22:55:51,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:51" (1/1) ... [2022-01-31 22:55:51,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:51" (1/1) ... [2022-01-31 22:55:51,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 22:55:51,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 22:55:51,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 22:55:51,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 22:55:51,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:51" (1/1) ... [2022-01-31 22:55:51,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 22:55:51,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 22:55:51,661 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 22:55:51,683 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 22:55:51,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 22:55:51,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 22:55:51,697 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 22:55:51,697 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 22:55:51,697 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 22:55:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 22:55:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 22:55:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 22:55:51,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 22:55:51,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2022-01-31 22:55:51,699 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 22:55:51,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 22:55:51,700 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-01-31 22:55:51,700 INFO L130 BoogieDeclarations]: Found specification of procedure g [2022-01-31 22:55:51,701 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 22:55:51,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 22:55:51,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 22:55:51,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 22:55:51,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 22:55:51,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 22:55:51,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 22:55:51,768 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 22:55:51,769 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 22:55:51,929 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 22:55:51,934 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 22:55:51,934 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-31 22:55:51,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:55:51 BoogieIcfgContainer [2022-01-31 22:55:51,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 22:55:51,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 22:55:51,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 22:55:51,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 22:55:51,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 10:55:51" (1/3) ... [2022-01-31 22:55:51,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3210eaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:55:51, skipping insertion in model container [2022-01-31 22:55:51,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:51" (2/3) ... [2022-01-31 22:55:51,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3210eaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:55:51, skipping insertion in model container [2022-01-31 22:55:51,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:55:51" (3/3) ... [2022-01-31 22:55:51,961 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_3.c.p+cfa-reducer.c [2022-01-31 22:55:51,965 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 22:55:51,965 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 22:55:52,048 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 22:55:52,053 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 22:55:52,054 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 22:55:52,064 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 22:55:52,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-31 22:55:52,070 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:52,071 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:52,071 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:52,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:52,076 INFO L85 PathProgramCache]: Analyzing trace with hash -242473645, now seen corresponding path program 1 times [2022-01-31 22:55:52,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:52,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290229268] [2022-01-31 22:55:52,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:52,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:52,170 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:52,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:52,410 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 22:55:52,411 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:52,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290229268] [2022-01-31 22:55:52,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1290229268] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:52,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:52,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 22:55:52,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394456492] [2022-01-31 22:55:52,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:52,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 22:55:52,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:52,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 22:55:52,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 22:55:52,451 INFO L87 Difference]: Start difference. First operand has 22 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:52,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:52,528 INFO L93 Difference]: Finished difference Result 40 states and 52 transitions. [2022-01-31 22:55:52,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 22:55:52,531 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-01-31 22:55:52,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:52,540 INFO L225 Difference]: With dead ends: 40 [2022-01-31 22:55:52,540 INFO L226 Difference]: Without dead ends: 23 [2022-01-31 22:55:52,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 22:55:52,548 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 8 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:52,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 52 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:55:52,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-01-31 22:55:52,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2022-01-31 22:55:52,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:52,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-01-31 22:55:52,583 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2022-01-31 22:55:52,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:52,584 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-01-31 22:55:52,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:52,584 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-01-31 22:55:52,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-31 22:55:52,585 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:52,585 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:52,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 22:55:52,586 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:52,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:52,587 INFO L85 PathProgramCache]: Analyzing trace with hash -355887846, now seen corresponding path program 1 times [2022-01-31 22:55:52,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:52,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407812496] [2022-01-31 22:55:52,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:52,619 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:52,619 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:52,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:52,624 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:52,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:52,713 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 22:55:52,713 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:52,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407812496] [2022-01-31 22:55:52,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1407812496] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:52,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:52,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 22:55:52,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914796667] [2022-01-31 22:55:52,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:52,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 22:55:52,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:52,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 22:55:52,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 22:55:52,716 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:52,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:52,755 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2022-01-31 22:55:52,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 22:55:52,756 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-01-31 22:55:52,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:52,757 INFO L225 Difference]: With dead ends: 35 [2022-01-31 22:55:52,757 INFO L226 Difference]: Without dead ends: 28 [2022-01-31 22:55:52,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 22:55:52,759 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 15 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:52,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 45 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:55:52,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-01-31 22:55:52,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2022-01-31 22:55:52,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:52,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2022-01-31 22:55:52,766 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 16 [2022-01-31 22:55:52,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:52,767 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-01-31 22:55:52,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:52,767 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2022-01-31 22:55:52,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-31 22:55:52,767 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:52,768 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:52,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 22:55:52,768 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:52,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:52,769 INFO L85 PathProgramCache]: Analyzing trace with hash 615237985, now seen corresponding path program 2 times [2022-01-31 22:55:52,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:52,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350655917] [2022-01-31 22:55:52,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:52,774 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:52,774 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:52,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:52,775 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:52,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:52,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:52,860 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 22:55:52,861 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:52,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350655917] [2022-01-31 22:55:52,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [350655917] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:52,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:52,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 22:55:52,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727032897] [2022-01-31 22:55:52,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:52,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 22:55:52,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:52,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 22:55:52,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-31 22:55:52,863 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:52,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:52,922 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2022-01-31 22:55:52,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 22:55:52,922 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-01-31 22:55:52,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:52,924 INFO L225 Difference]: With dead ends: 41 [2022-01-31 22:55:52,924 INFO L226 Difference]: Without dead ends: 35 [2022-01-31 22:55:52,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-01-31 22:55:52,926 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 13 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:52,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 75 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:55:52,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-01-31 22:55:52,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 24. [2022-01-31 22:55:52,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:52,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2022-01-31 22:55:52,936 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 20 [2022-01-31 22:55:52,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:52,936 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2022-01-31 22:55:52,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:52,936 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2022-01-31 22:55:52,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-31 22:55:52,939 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:52,939 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:52,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 22:55:52,940 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:52,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:52,940 INFO L85 PathProgramCache]: Analyzing trace with hash 630342022, now seen corresponding path program 1 times [2022-01-31 22:55:52,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:52,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455159480] [2022-01-31 22:55:52,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:52,949 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:52,949 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:52,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:52,950 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:53,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:53,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:53,062 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 22:55:53,063 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:53,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455159480] [2022-01-31 22:55:53,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [455159480] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:53,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:53,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 22:55:53,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801888096] [2022-01-31 22:55:53,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:53,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 22:55:53,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:53,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 22:55:53,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-31 22:55:53,066 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:53,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:53,121 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2022-01-31 22:55:53,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 22:55:53,122 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-01-31 22:55:53,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:53,124 INFO L225 Difference]: With dead ends: 40 [2022-01-31 22:55:53,124 INFO L226 Difference]: Without dead ends: 33 [2022-01-31 22:55:53,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-31 22:55:53,131 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 21 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:53,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 60 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:55:53,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-31 22:55:53,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2022-01-31 22:55:53,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:53,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2022-01-31 22:55:53,140 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 20 [2022-01-31 22:55:53,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:53,140 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2022-01-31 22:55:53,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:53,141 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2022-01-31 22:55:53,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-31 22:55:53,141 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:53,141 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:53,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-31 22:55:53,142 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:53,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:53,142 INFO L85 PathProgramCache]: Analyzing trace with hash 2132998733, now seen corresponding path program 2 times [2022-01-31 22:55:53,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:53,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748674529] [2022-01-31 22:55:53,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:53,146 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:53,147 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:53,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:53,148 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:53,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:53,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:53,234 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 22:55:53,234 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:53,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748674529] [2022-01-31 22:55:53,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1748674529] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:53,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:53,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-31 22:55:53,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992772986] [2022-01-31 22:55:53,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:53,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-31 22:55:53,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:53,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-31 22:55:53,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-31 22:55:53,236 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:53,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:53,285 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2022-01-31 22:55:53,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 22:55:53,285 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-01-31 22:55:53,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:53,286 INFO L225 Difference]: With dead ends: 45 [2022-01-31 22:55:53,286 INFO L226 Difference]: Without dead ends: 38 [2022-01-31 22:55:53,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-31 22:55:53,287 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 27 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 77 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 22:55:53,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 77 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:55:53,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-01-31 22:55:53,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2022-01-31 22:55:53,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 30 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:53,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2022-01-31 22:55:53,293 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 24 [2022-01-31 22:55:53,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:53,293 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2022-01-31 22:55:53,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:53,294 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2022-01-31 22:55:53,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-31 22:55:53,294 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:53,294 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:53,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-31 22:55:53,295 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:53,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:53,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1131677804, now seen corresponding path program 3 times [2022-01-31 22:55:53,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:53,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882980603] [2022-01-31 22:55:53,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:53,300 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:53,300 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:53,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:53,301 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:53,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:53,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:53,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:53,387 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 22:55:53,388 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:53,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882980603] [2022-01-31 22:55:53,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [882980603] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:53,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:53,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 22:55:53,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611738669] [2022-01-31 22:55:53,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:53,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 22:55:53,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:53,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 22:55:53,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-31 22:55:53,390 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:53,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:53,430 INFO L93 Difference]: Finished difference Result 50 states and 64 transitions. [2022-01-31 22:55:53,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 22:55:53,431 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-01-31 22:55:53,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:53,432 INFO L225 Difference]: With dead ends: 50 [2022-01-31 22:55:53,432 INFO L226 Difference]: Without dead ends: 43 [2022-01-31 22:55:53,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-31 22:55:53,433 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 42 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:53,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 70 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:55:53,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-01-31 22:55:53,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2022-01-31 22:55:53,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 35 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:53,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2022-01-31 22:55:53,440 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 28 [2022-01-31 22:55:53,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:53,440 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2022-01-31 22:55:53,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:53,440 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2022-01-31 22:55:53,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-31 22:55:53,441 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:53,441 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:53,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-31 22:55:53,442 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:53,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:53,442 INFO L85 PathProgramCache]: Analyzing trace with hash -149489317, now seen corresponding path program 4 times [2022-01-31 22:55:53,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:53,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779179799] [2022-01-31 22:55:53,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:53,446 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:53,447 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:53,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:53,448 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:53,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:53,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:53,537 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 22:55:53,537 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:53,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779179799] [2022-01-31 22:55:53,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1779179799] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:53,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:53,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-31 22:55:53,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634658766] [2022-01-31 22:55:53,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:53,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 22:55:53,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:53,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 22:55:53,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-31 22:55:53,539 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:53,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:53,582 INFO L93 Difference]: Finished difference Result 55 states and 71 transitions. [2022-01-31 22:55:53,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-31 22:55:53,582 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2022-01-31 22:55:53,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:53,583 INFO L225 Difference]: With dead ends: 55 [2022-01-31 22:55:53,583 INFO L226 Difference]: Without dead ends: 48 [2022-01-31 22:55:53,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-31 22:55:53,584 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 51 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:53,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 75 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:55:53,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-01-31 22:55:53,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2022-01-31 22:55:53,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 40 states have (on average 1.35) internal successors, (54), 40 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:53,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 57 transitions. [2022-01-31 22:55:53,599 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 57 transitions. Word has length 32 [2022-01-31 22:55:53,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:53,600 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 57 transitions. [2022-01-31 22:55:53,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:53,600 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 57 transitions. [2022-01-31 22:55:53,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-31 22:55:53,601 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:53,601 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:53,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-31 22:55:53,601 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:53,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:53,602 INFO L85 PathProgramCache]: Analyzing trace with hash 221101986, now seen corresponding path program 5 times [2022-01-31 22:55:53,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:53,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513370923] [2022-01-31 22:55:53,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:53,606 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:53,607 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:53,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:53,608 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:53,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:53,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:53,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:53,746 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 22:55:53,746 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:53,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513370923] [2022-01-31 22:55:53,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [513370923] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:53,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:53,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-31 22:55:53,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366137651] [2022-01-31 22:55:53,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:53,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 22:55:53,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:53,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 22:55:53,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-01-31 22:55:53,748 INFO L87 Difference]: Start difference. First operand 44 states and 57 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:53,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:53,798 INFO L93 Difference]: Finished difference Result 60 states and 78 transitions. [2022-01-31 22:55:53,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-31 22:55:53,798 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2022-01-31 22:55:53,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:53,801 INFO L225 Difference]: With dead ends: 60 [2022-01-31 22:55:53,801 INFO L226 Difference]: Without dead ends: 53 [2022-01-31 22:55:53,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-01-31 22:55:53,802 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 54 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:53,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 92 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:55:53,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-01-31 22:55:53,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2022-01-31 22:55:53,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 45 states have internal predecessors, (61), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:53,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 64 transitions. [2022-01-31 22:55:53,823 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 64 transitions. Word has length 36 [2022-01-31 22:55:53,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:53,824 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 64 transitions. [2022-01-31 22:55:53,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:53,824 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 64 transitions. [2022-01-31 22:55:53,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-31 22:55:53,825 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:53,825 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:53,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-31 22:55:53,825 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:53,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:53,826 INFO L85 PathProgramCache]: Analyzing trace with hash 307890793, now seen corresponding path program 6 times [2022-01-31 22:55:53,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:53,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800035206] [2022-01-31 22:55:53,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:53,833 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:53,834 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:53,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:53,835 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:53,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:53,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:53,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:53,986 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 22:55:53,986 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:53,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800035206] [2022-01-31 22:55:53,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1800035206] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:53,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:53,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-31 22:55:53,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483918673] [2022-01-31 22:55:53,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:53,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 22:55:53,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:53,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 22:55:53,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2022-01-31 22:55:53,988 INFO L87 Difference]: Start difference. First operand 49 states and 64 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:54,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:54,035 INFO L93 Difference]: Finished difference Result 65 states and 85 transitions. [2022-01-31 22:55:54,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-31 22:55:54,035 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2022-01-31 22:55:54,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:54,036 INFO L225 Difference]: With dead ends: 65 [2022-01-31 22:55:54,036 INFO L226 Difference]: Without dead ends: 58 [2022-01-31 22:55:54,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2022-01-31 22:55:54,037 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 60 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:54,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 109 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:55:54,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-01-31 22:55:54,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2022-01-31 22:55:54,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 50 states have (on average 1.36) internal successors, (68), 50 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:54,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 71 transitions. [2022-01-31 22:55:54,042 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 71 transitions. Word has length 40 [2022-01-31 22:55:54,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:54,042 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 71 transitions. [2022-01-31 22:55:54,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:54,043 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 71 transitions. [2022-01-31 22:55:54,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-31 22:55:54,044 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:54,044 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:54,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-31 22:55:54,044 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:54,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:54,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1085957712, now seen corresponding path program 7 times [2022-01-31 22:55:54,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:54,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66930939] [2022-01-31 22:55:54,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:54,048 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:54,048 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:54,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:54,050 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:54,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:54,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:54,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:54,211 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 22:55:54,211 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:54,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66930939] [2022-01-31 22:55:54,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [66930939] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:54,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:54,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-31 22:55:54,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003148372] [2022-01-31 22:55:54,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:54,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 22:55:54,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:54,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 22:55:54,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2022-01-31 22:55:54,213 INFO L87 Difference]: Start difference. First operand 54 states and 71 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:54,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:54,265 INFO L93 Difference]: Finished difference Result 70 states and 92 transitions. [2022-01-31 22:55:54,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-31 22:55:54,266 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2022-01-31 22:55:54,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:54,266 INFO L225 Difference]: With dead ends: 70 [2022-01-31 22:55:54,266 INFO L226 Difference]: Without dead ends: 63 [2022-01-31 22:55:54,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2022-01-31 22:55:54,267 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 78 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:54,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 102 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:55:54,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-01-31 22:55:54,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2022-01-31 22:55:54,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 55 states have (on average 1.3636363636363635) internal successors, (75), 55 states have internal predecessors, (75), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:54,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 78 transitions. [2022-01-31 22:55:54,272 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 78 transitions. Word has length 44 [2022-01-31 22:55:54,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:54,272 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 78 transitions. [2022-01-31 22:55:54,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:54,272 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 78 transitions. [2022-01-31 22:55:54,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-31 22:55:54,273 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:54,273 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:54,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-31 22:55:54,274 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:54,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:54,274 INFO L85 PathProgramCache]: Analyzing trace with hash -507892361, now seen corresponding path program 8 times [2022-01-31 22:55:54,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:54,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283976630] [2022-01-31 22:55:54,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:54,277 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:54,278 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:54,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:54,279 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:54,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:54,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:54,393 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 22:55:54,393 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:54,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283976630] [2022-01-31 22:55:54,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1283976630] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:54,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:54,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 22:55:54,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909988434] [2022-01-31 22:55:54,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:54,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 22:55:54,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:54,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 22:55:54,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2022-01-31 22:55:54,395 INFO L87 Difference]: Start difference. First operand 59 states and 78 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 12 states have internal predecessors, (45), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:54,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:54,456 INFO L93 Difference]: Finished difference Result 75 states and 99 transitions. [2022-01-31 22:55:54,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 22:55:54,456 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 12 states have internal predecessors, (45), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2022-01-31 22:55:54,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:54,458 INFO L225 Difference]: With dead ends: 75 [2022-01-31 22:55:54,458 INFO L226 Difference]: Without dead ends: 68 [2022-01-31 22:55:54,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2022-01-31 22:55:54,459 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 96 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:54,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 107 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:55:54,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-01-31 22:55:54,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2022-01-31 22:55:54,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 60 states have (on average 1.3666666666666667) internal successors, (82), 60 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:54,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 85 transitions. [2022-01-31 22:55:54,466 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 85 transitions. Word has length 48 [2022-01-31 22:55:54,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:54,466 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 85 transitions. [2022-01-31 22:55:54,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 12 states have internal predecessors, (45), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:54,466 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 85 transitions. [2022-01-31 22:55:54,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-31 22:55:54,467 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:54,467 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:54,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-31 22:55:54,467 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:54,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:54,468 INFO L85 PathProgramCache]: Analyzing trace with hash -861829698, now seen corresponding path program 9 times [2022-01-31 22:55:54,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:54,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972074251] [2022-01-31 22:55:54,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:54,473 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:54,473 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:54,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:54,475 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:54,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:54,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:54,636 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 22:55:54,637 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:54,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972074251] [2022-01-31 22:55:54,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1972074251] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:54,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:54,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-31 22:55:54,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331991827] [2022-01-31 22:55:54,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:54,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-31 22:55:54,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:54,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-31 22:55:54,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2022-01-31 22:55:54,638 INFO L87 Difference]: Start difference. First operand 64 states and 85 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:54,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:54,689 INFO L93 Difference]: Finished difference Result 80 states and 106 transitions. [2022-01-31 22:55:54,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-31 22:55:54,690 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2022-01-31 22:55:54,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:54,690 INFO L225 Difference]: With dead ends: 80 [2022-01-31 22:55:54,690 INFO L226 Difference]: Without dead ends: 73 [2022-01-31 22:55:54,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2022-01-31 22:55:54,692 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 93 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:54,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 124 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:55:54,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-01-31 22:55:54,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2022-01-31 22:55:54,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 65 states have (on average 1.3692307692307693) internal successors, (89), 65 states have internal predecessors, (89), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:54,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 92 transitions. [2022-01-31 22:55:54,701 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 92 transitions. Word has length 52 [2022-01-31 22:55:54,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:54,702 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 92 transitions. [2022-01-31 22:55:54,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:54,702 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 92 transitions. [2022-01-31 22:55:54,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-31 22:55:54,707 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:54,707 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:54,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-31 22:55:54,708 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:54,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:54,708 INFO L85 PathProgramCache]: Analyzing trace with hash -939171195, now seen corresponding path program 10 times [2022-01-31 22:55:54,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:54,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [21926514] [2022-01-31 22:55:54,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:54,715 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:54,715 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:54,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:54,719 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:54,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:54,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:54,891 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 22:55:54,891 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:54,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [21926514] [2022-01-31 22:55:54,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [21926514] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:54,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:54,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-31 22:55:54,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622574331] [2022-01-31 22:55:54,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:54,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 22:55:54,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:54,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 22:55:54,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2022-01-31 22:55:54,893 INFO L87 Difference]: Start difference. First operand 69 states and 92 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 14 states have internal predecessors, (53), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:54,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:54,943 INFO L93 Difference]: Finished difference Result 85 states and 113 transitions. [2022-01-31 22:55:54,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-31 22:55:54,944 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 14 states have internal predecessors, (53), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2022-01-31 22:55:54,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:54,944 INFO L225 Difference]: With dead ends: 85 [2022-01-31 22:55:54,945 INFO L226 Difference]: Without dead ends: 78 [2022-01-31 22:55:54,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2022-01-31 22:55:54,945 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 105 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:54,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 117 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:55:54,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-01-31 22:55:54,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2022-01-31 22:55:54,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 70 states have (on average 1.3714285714285714) internal successors, (96), 70 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:54,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 99 transitions. [2022-01-31 22:55:54,949 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 99 transitions. Word has length 56 [2022-01-31 22:55:54,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:54,949 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 99 transitions. [2022-01-31 22:55:54,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 14 states have internal predecessors, (53), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:54,950 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 99 transitions. [2022-01-31 22:55:54,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-31 22:55:54,950 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:54,951 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:54,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-31 22:55:54,951 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:54,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:54,951 INFO L85 PathProgramCache]: Analyzing trace with hash -2129689652, now seen corresponding path program 11 times [2022-01-31 22:55:54,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:54,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617618303] [2022-01-31 22:55:54,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:54,955 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:54,955 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:54,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:54,956 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:54,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:55,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:55,129 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 22:55:55,129 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:55,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617618303] [2022-01-31 22:55:55,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1617618303] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:55,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:55,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-31 22:55:55,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161182508] [2022-01-31 22:55:55,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:55,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-31 22:55:55,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:55,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-31 22:55:55,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2022-01-31 22:55:55,131 INFO L87 Difference]: Start difference. First operand 74 states and 99 transitions. Second operand has 16 states, 16 states have (on average 3.5625) internal successors, (57), 15 states have internal predecessors, (57), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:55,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:55,195 INFO L93 Difference]: Finished difference Result 90 states and 120 transitions. [2022-01-31 22:55:55,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-31 22:55:55,195 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 15 states have internal predecessors, (57), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 60 [2022-01-31 22:55:55,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:55,196 INFO L225 Difference]: With dead ends: 90 [2022-01-31 22:55:55,196 INFO L226 Difference]: Without dead ends: 83 [2022-01-31 22:55:55,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2022-01-31 22:55:55,197 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 132 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:55,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 110 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:55:55,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-01-31 22:55:55,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2022-01-31 22:55:55,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 75 states have (on average 1.3733333333333333) internal successors, (103), 75 states have internal predecessors, (103), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:55,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 106 transitions. [2022-01-31 22:55:55,200 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 106 transitions. Word has length 60 [2022-01-31 22:55:55,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:55,201 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 106 transitions. [2022-01-31 22:55:55,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 15 states have internal predecessors, (57), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:55,201 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 106 transitions. [2022-01-31 22:55:55,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-31 22:55:55,201 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:55,201 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:55,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-31 22:55:55,202 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:55,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:55,202 INFO L85 PathProgramCache]: Analyzing trace with hash 2047453587, now seen corresponding path program 12 times [2022-01-31 22:55:55,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:55,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613353736] [2022-01-31 22:55:55,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:55,205 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:55,205 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:55,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:55,206 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:55,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:55,371 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 22:55:55,372 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:55,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [613353736] [2022-01-31 22:55:55,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [613353736] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:55,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:55,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-31 22:55:55,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699105305] [2022-01-31 22:55:55,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:55,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-31 22:55:55,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:55,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-31 22:55:55,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2022-01-31 22:55:55,373 INFO L87 Difference]: Start difference. First operand 79 states and 106 transitions. Second operand has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 16 states have internal predecessors, (61), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:55,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:55,435 INFO L93 Difference]: Finished difference Result 95 states and 127 transitions. [2022-01-31 22:55:55,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-31 22:55:55,435 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 16 states have internal predecessors, (61), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2022-01-31 22:55:55,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:55,436 INFO L225 Difference]: With dead ends: 95 [2022-01-31 22:55:55,436 INFO L226 Difference]: Without dead ends: 88 [2022-01-31 22:55:55,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2022-01-31 22:55:55,437 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 123 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:55,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 139 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:55:55,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-01-31 22:55:55,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2022-01-31 22:55:55,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 80 states have (on average 1.375) internal successors, (110), 80 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:55,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 113 transitions. [2022-01-31 22:55:55,441 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 113 transitions. Word has length 64 [2022-01-31 22:55:55,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:55,441 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 113 transitions. [2022-01-31 22:55:55,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 16 states have internal predecessors, (61), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:55,441 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 113 transitions. [2022-01-31 22:55:55,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-31 22:55:55,442 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:55,442 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:55,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-31 22:55:55,442 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:55,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:55,442 INFO L85 PathProgramCache]: Analyzing trace with hash 2052953050, now seen corresponding path program 13 times [2022-01-31 22:55:55,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:55,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248350571] [2022-01-31 22:55:55,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:55,446 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:55,446 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:55,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:55,447 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:55,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:55,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:55,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:55,632 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 22:55:55,632 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:55,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248350571] [2022-01-31 22:55:55,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [248350571] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:55,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:55,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-31 22:55:55,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124475128] [2022-01-31 22:55:55,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:55,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-31 22:55:55,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:55,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-31 22:55:55,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2022-01-31 22:55:55,634 INFO L87 Difference]: Start difference. First operand 84 states and 113 transitions. Second operand has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 17 states have internal predecessors, (65), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:55,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:55,699 INFO L93 Difference]: Finished difference Result 100 states and 134 transitions. [2022-01-31 22:55:55,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-31 22:55:55,699 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 17 states have internal predecessors, (65), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2022-01-31 22:55:55,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:55,700 INFO L225 Difference]: With dead ends: 100 [2022-01-31 22:55:55,700 INFO L226 Difference]: Without dead ends: 93 [2022-01-31 22:55:55,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2022-01-31 22:55:55,701 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 165 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:55,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 144 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:55:55,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-01-31 22:55:55,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2022-01-31 22:55:55,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 85 states have (on average 1.3764705882352941) internal successors, (117), 85 states have internal predecessors, (117), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:55,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 120 transitions. [2022-01-31 22:55:55,706 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 120 transitions. Word has length 68 [2022-01-31 22:55:55,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:55,706 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 120 transitions. [2022-01-31 22:55:55,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 17 states have internal predecessors, (65), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:55,706 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 120 transitions. [2022-01-31 22:55:55,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-31 22:55:55,710 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:55,710 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:55,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-31 22:55:55,710 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:55,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:55,711 INFO L85 PathProgramCache]: Analyzing trace with hash -23788895, now seen corresponding path program 14 times [2022-01-31 22:55:55,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:55,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405894572] [2022-01-31 22:55:55,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:55,716 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:55,716 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:55,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:55,718 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:55,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:55,938 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 22:55:55,938 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:55,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405894572] [2022-01-31 22:55:55,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [405894572] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:55,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:55,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-31 22:55:55,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611485574] [2022-01-31 22:55:55,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:55,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-31 22:55:55,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:55,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-31 22:55:55,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2022-01-31 22:55:55,940 INFO L87 Difference]: Start difference. First operand 89 states and 120 transitions. Second operand has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 18 states have internal predecessors, (69), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:55,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:55,999 INFO L93 Difference]: Finished difference Result 105 states and 141 transitions. [2022-01-31 22:55:55,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-31 22:55:56,000 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 18 states have internal predecessors, (69), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2022-01-31 22:55:56,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:56,000 INFO L225 Difference]: With dead ends: 105 [2022-01-31 22:55:56,000 INFO L226 Difference]: Without dead ends: 98 [2022-01-31 22:55:56,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2022-01-31 22:55:56,001 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 162 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:56,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 137 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:55:56,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-01-31 22:55:56,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2022-01-31 22:55:56,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 90 states have (on average 1.3777777777777778) internal successors, (124), 90 states have internal predecessors, (124), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:56,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 127 transitions. [2022-01-31 22:55:56,006 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 127 transitions. Word has length 72 [2022-01-31 22:55:56,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:56,006 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 127 transitions. [2022-01-31 22:55:56,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 18 states have internal predecessors, (69), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:56,006 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 127 transitions. [2022-01-31 22:55:56,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-31 22:55:56,006 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:56,007 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:56,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-31 22:55:56,007 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:56,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:56,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1470515736, now seen corresponding path program 15 times [2022-01-31 22:55:56,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:56,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385237675] [2022-01-31 22:55:56,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:56,010 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:56,011 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:56,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:56,012 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:56,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:56,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:56,227 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 22:55:56,227 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:56,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385237675] [2022-01-31 22:55:56,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [385237675] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:56,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:56,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-31 22:55:56,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951910994] [2022-01-31 22:55:56,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:56,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-31 22:55:56,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:56,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-31 22:55:56,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2022-01-31 22:55:56,229 INFO L87 Difference]: Start difference. First operand 94 states and 127 transitions. Second operand has 20 states, 20 states have (on average 3.65) internal successors, (73), 19 states have internal predecessors, (73), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:56,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:56,288 INFO L93 Difference]: Finished difference Result 110 states and 148 transitions. [2022-01-31 22:55:56,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-31 22:55:56,288 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.65) internal successors, (73), 19 states have internal predecessors, (73), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 76 [2022-01-31 22:55:56,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:56,289 INFO L225 Difference]: With dead ends: 110 [2022-01-31 22:55:56,289 INFO L226 Difference]: Without dead ends: 103 [2022-01-31 22:55:56,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2022-01-31 22:55:56,289 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 183 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:56,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 130 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:55:56,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-01-31 22:55:56,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2022-01-31 22:55:56,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 95 states have (on average 1.3789473684210527) internal successors, (131), 95 states have internal predecessors, (131), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:56,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 134 transitions. [2022-01-31 22:55:56,303 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 134 transitions. Word has length 76 [2022-01-31 22:55:56,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:56,303 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 134 transitions. [2022-01-31 22:55:56,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.65) internal successors, (73), 19 states have internal predecessors, (73), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:56,304 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 134 transitions. [2022-01-31 22:55:56,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-31 22:55:56,304 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:56,304 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:56,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-31 22:55:56,304 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:56,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:56,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1368035921, now seen corresponding path program 16 times [2022-01-31 22:55:56,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:56,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35025881] [2022-01-31 22:55:56,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:56,308 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:56,308 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:56,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:56,310 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:56,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:56,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:56,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:56,538 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 22:55:56,539 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:56,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35025881] [2022-01-31 22:55:56,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [35025881] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:56,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:56,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-31 22:55:56,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90012293] [2022-01-31 22:55:56,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:56,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-31 22:55:56,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:56,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-31 22:55:56,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2022-01-31 22:55:56,540 INFO L87 Difference]: Start difference. First operand 99 states and 134 transitions. Second operand has 21 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 20 states have internal predecessors, (77), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:56,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:56,597 INFO L93 Difference]: Finished difference Result 115 states and 155 transitions. [2022-01-31 22:55:56,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-31 22:55:56,598 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 20 states have internal predecessors, (77), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 80 [2022-01-31 22:55:56,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:56,598 INFO L225 Difference]: With dead ends: 115 [2022-01-31 22:55:56,598 INFO L226 Difference]: Without dead ends: 108 [2022-01-31 22:55:56,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2022-01-31 22:55:56,601 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 192 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:56,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 171 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:55:56,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-01-31 22:55:56,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2022-01-31 22:55:56,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 100 states have (on average 1.38) internal successors, (138), 100 states have internal predecessors, (138), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:56,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 141 transitions. [2022-01-31 22:55:56,606 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 141 transitions. Word has length 80 [2022-01-31 22:55:56,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:56,606 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 141 transitions. [2022-01-31 22:55:56,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 20 states have internal predecessors, (77), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:56,606 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 141 transitions. [2022-01-31 22:55:56,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-31 22:55:56,607 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:56,607 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:56,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-31 22:55:56,607 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:56,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:56,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1288825334, now seen corresponding path program 17 times [2022-01-31 22:55:56,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:56,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411397754] [2022-01-31 22:55:56,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:56,611 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:56,611 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:56,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:56,613 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:56,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:56,862 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 22:55:56,862 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:56,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411397754] [2022-01-31 22:55:56,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [411397754] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:56,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:56,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-31 22:55:56,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32178841] [2022-01-31 22:55:56,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:56,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-31 22:55:56,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:56,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-31 22:55:56,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2022-01-31 22:55:56,864 INFO L87 Difference]: Start difference. First operand 104 states and 141 transitions. Second operand has 22 states, 22 states have (on average 3.6818181818181817) internal successors, (81), 21 states have internal predecessors, (81), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:56,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:56,924 INFO L93 Difference]: Finished difference Result 120 states and 162 transitions. [2022-01-31 22:55:56,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-31 22:55:56,924 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.6818181818181817) internal successors, (81), 21 states have internal predecessors, (81), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 84 [2022-01-31 22:55:56,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:56,925 INFO L225 Difference]: With dead ends: 120 [2022-01-31 22:55:56,925 INFO L226 Difference]: Without dead ends: 113 [2022-01-31 22:55:56,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2022-01-31 22:55:56,926 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 228 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:56,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 128 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:55:56,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-01-31 22:55:56,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 109. [2022-01-31 22:55:56,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 105 states have (on average 1.380952380952381) internal successors, (145), 105 states have internal predecessors, (145), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:56,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 148 transitions. [2022-01-31 22:55:56,930 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 148 transitions. Word has length 84 [2022-01-31 22:55:56,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:56,931 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 148 transitions. [2022-01-31 22:55:56,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.6818181818181817) internal successors, (81), 21 states have internal predecessors, (81), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:56,931 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 148 transitions. [2022-01-31 22:55:56,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-31 22:55:56,931 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:56,931 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:56,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-31 22:55:56,932 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:56,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:56,932 INFO L85 PathProgramCache]: Analyzing trace with hash 880339645, now seen corresponding path program 18 times [2022-01-31 22:55:56,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:56,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668703535] [2022-01-31 22:55:56,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:56,935 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:56,935 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:56,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:56,937 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:56,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:57,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:57,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:57,208 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 22:55:57,208 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:57,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668703535] [2022-01-31 22:55:57,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [668703535] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:57,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:57,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-01-31 22:55:57,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617049504] [2022-01-31 22:55:57,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:57,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-31 22:55:57,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:57,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-31 22:55:57,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2022-01-31 22:55:57,210 INFO L87 Difference]: Start difference. First operand 109 states and 148 transitions. Second operand has 23 states, 23 states have (on average 3.6956521739130435) internal successors, (85), 22 states have internal predecessors, (85), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:57,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:57,280 INFO L93 Difference]: Finished difference Result 125 states and 169 transitions. [2022-01-31 22:55:57,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-31 22:55:57,280 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.6956521739130435) internal successors, (85), 22 states have internal predecessors, (85), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 88 [2022-01-31 22:55:57,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:57,281 INFO L225 Difference]: With dead ends: 125 [2022-01-31 22:55:57,281 INFO L226 Difference]: Without dead ends: 118 [2022-01-31 22:55:57,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2022-01-31 22:55:57,282 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 255 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:57,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 145 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:55:57,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-01-31 22:55:57,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 114. [2022-01-31 22:55:57,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 110 states have (on average 1.3818181818181818) internal successors, (152), 110 states have internal predecessors, (152), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:57,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 155 transitions. [2022-01-31 22:55:57,286 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 155 transitions. Word has length 88 [2022-01-31 22:55:57,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:57,287 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 155 transitions. [2022-01-31 22:55:57,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.6956521739130435) internal successors, (85), 22 states have internal predecessors, (85), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:57,287 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 155 transitions. [2022-01-31 22:55:57,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-31 22:55:57,287 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:57,288 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:57,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-31 22:55:57,288 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:57,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:57,288 INFO L85 PathProgramCache]: Analyzing trace with hash -74174460, now seen corresponding path program 19 times [2022-01-31 22:55:57,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:57,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39535257] [2022-01-31 22:55:57,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:57,291 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:57,291 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:57,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:57,293 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:57,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:57,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:57,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:57,587 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 22:55:57,587 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:57,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39535257] [2022-01-31 22:55:57,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [39535257] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:57,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:57,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-01-31 22:55:57,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535423237] [2022-01-31 22:55:57,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:57,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-31 22:55:57,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:57,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-31 22:55:57,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2022-01-31 22:55:57,589 INFO L87 Difference]: Start difference. First operand 114 states and 155 transitions. Second operand has 24 states, 24 states have (on average 3.7083333333333335) internal successors, (89), 23 states have internal predecessors, (89), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:57,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:57,668 INFO L93 Difference]: Finished difference Result 130 states and 176 transitions. [2022-01-31 22:55:57,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-31 22:55:57,669 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.7083333333333335) internal successors, (89), 23 states have internal predecessors, (89), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 92 [2022-01-31 22:55:57,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:57,670 INFO L225 Difference]: With dead ends: 130 [2022-01-31 22:55:57,670 INFO L226 Difference]: Without dead ends: 123 [2022-01-31 22:55:57,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2022-01-31 22:55:57,671 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 207 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:57,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 186 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:55:57,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-01-31 22:55:57,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2022-01-31 22:55:57,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 115 states have (on average 1.382608695652174) internal successors, (159), 115 states have internal predecessors, (159), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:57,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 162 transitions. [2022-01-31 22:55:57,679 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 162 transitions. Word has length 92 [2022-01-31 22:55:57,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:57,679 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 162 transitions. [2022-01-31 22:55:57,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.7083333333333335) internal successors, (89), 23 states have internal predecessors, (89), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:57,680 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 162 transitions. [2022-01-31 22:55:57,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-31 22:55:57,680 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:57,680 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:57,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-31 22:55:57,680 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:57,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:57,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1922205237, now seen corresponding path program 20 times [2022-01-31 22:55:57,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:57,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694857631] [2022-01-31 22:55:57,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:57,684 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:57,684 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:57,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:57,686 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:57,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:57,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:58,006 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 22:55:58,006 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:58,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694857631] [2022-01-31 22:55:58,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1694857631] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:58,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:58,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-01-31 22:55:58,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717700126] [2022-01-31 22:55:58,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:58,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-31 22:55:58,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:58,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-31 22:55:58,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2022-01-31 22:55:58,008 INFO L87 Difference]: Start difference. First operand 119 states and 162 transitions. Second operand has 25 states, 25 states have (on average 3.72) internal successors, (93), 24 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:58,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:58,088 INFO L93 Difference]: Finished difference Result 135 states and 183 transitions. [2022-01-31 22:55:58,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-31 22:55:58,088 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.72) internal successors, (93), 24 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2022-01-31 22:55:58,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:58,089 INFO L225 Difference]: With dead ends: 135 [2022-01-31 22:55:58,089 INFO L226 Difference]: Without dead ends: 128 [2022-01-31 22:55:58,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2022-01-31 22:55:58,090 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 252 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:58,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 155 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:55:58,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-01-31 22:55:58,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 124. [2022-01-31 22:55:58,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 120 states have (on average 1.3833333333333333) internal successors, (166), 120 states have internal predecessors, (166), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:58,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 169 transitions. [2022-01-31 22:55:58,095 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 169 transitions. Word has length 96 [2022-01-31 22:55:58,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:58,095 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 169 transitions. [2022-01-31 22:55:58,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.72) internal successors, (93), 24 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:58,095 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 169 transitions. [2022-01-31 22:55:58,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-31 22:55:58,096 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:58,096 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:58,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-31 22:55:58,096 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:58,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:58,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1704032238, now seen corresponding path program 21 times [2022-01-31 22:55:58,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:58,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273850443] [2022-01-31 22:55:58,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:58,100 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:58,100 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:58,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:58,101 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:58,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:58,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:58,420 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 22:55:58,420 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:58,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273850443] [2022-01-31 22:55:58,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [273850443] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:58,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:58,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-31 22:55:58,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229836269] [2022-01-31 22:55:58,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:58,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-31 22:55:58,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:58,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-31 22:55:58,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2022-01-31 22:55:58,421 INFO L87 Difference]: Start difference. First operand 124 states and 169 transitions. Second operand has 26 states, 26 states have (on average 3.730769230769231) internal successors, (97), 25 states have internal predecessors, (97), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:58,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:58,503 INFO L93 Difference]: Finished difference Result 140 states and 190 transitions. [2022-01-31 22:55:58,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-31 22:55:58,503 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.730769230769231) internal successors, (97), 25 states have internal predecessors, (97), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2022-01-31 22:55:58,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:58,504 INFO L225 Difference]: With dead ends: 140 [2022-01-31 22:55:58,504 INFO L226 Difference]: Without dead ends: 133 [2022-01-31 22:55:58,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2022-01-31 22:55:58,505 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 288 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:58,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 172 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:55:58,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-01-31 22:55:58,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 129. [2022-01-31 22:55:58,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 125 states have (on average 1.384) internal successors, (173), 125 states have internal predecessors, (173), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:58,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 176 transitions. [2022-01-31 22:55:58,510 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 176 transitions. Word has length 100 [2022-01-31 22:55:58,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:58,510 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 176 transitions. [2022-01-31 22:55:58,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.730769230769231) internal successors, (97), 25 states have internal predecessors, (97), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:58,511 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 176 transitions. [2022-01-31 22:55:58,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-31 22:55:58,511 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:58,511 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:58,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-31 22:55:58,512 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:58,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:58,512 INFO L85 PathProgramCache]: Analyzing trace with hash 136387289, now seen corresponding path program 22 times [2022-01-31 22:55:58,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:58,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112773806] [2022-01-31 22:55:58,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:58,515 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:58,515 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:58,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:58,517 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:58,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:58,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:58,895 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 22:55:58,896 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:58,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112773806] [2022-01-31 22:55:58,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [112773806] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:58,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:58,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-31 22:55:58,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442248800] [2022-01-31 22:55:58,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:58,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-31 22:55:58,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:58,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-31 22:55:58,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2022-01-31 22:55:58,898 INFO L87 Difference]: Start difference. First operand 129 states and 176 transitions. Second operand has 27 states, 27 states have (on average 3.740740740740741) internal successors, (101), 26 states have internal predecessors, (101), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:58,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:58,982 INFO L93 Difference]: Finished difference Result 145 states and 197 transitions. [2022-01-31 22:55:58,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-31 22:55:58,982 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.740740740740741) internal successors, (101), 26 states have internal predecessors, (101), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 104 [2022-01-31 22:55:58,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:58,983 INFO L225 Difference]: With dead ends: 145 [2022-01-31 22:55:58,983 INFO L226 Difference]: Without dead ends: 138 [2022-01-31 22:55:58,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2022-01-31 22:55:58,984 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 285 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:58,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 165 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:55:58,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-01-31 22:55:58,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 134. [2022-01-31 22:55:58,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 130 states have (on average 1.3846153846153846) internal successors, (180), 130 states have internal predecessors, (180), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:58,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 183 transitions. [2022-01-31 22:55:58,990 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 183 transitions. Word has length 104 [2022-01-31 22:55:58,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:58,990 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 183 transitions. [2022-01-31 22:55:58,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.740740740740741) internal successors, (101), 26 states have internal predecessors, (101), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:58,991 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 183 transitions. [2022-01-31 22:55:58,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-31 22:55:58,991 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:58,992 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:58,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-31 22:55:58,992 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:58,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:58,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1630466592, now seen corresponding path program 23 times [2022-01-31 22:55:58,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:58,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310085394] [2022-01-31 22:55:58,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:58,995 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:58,995 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:58,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:58,997 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:59,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:59,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:59,359 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 22:55:59,360 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:59,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310085394] [2022-01-31 22:55:59,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1310085394] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:59,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:59,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-31 22:55:59,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953798286] [2022-01-31 22:55:59,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:59,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-31 22:55:59,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:59,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-31 22:55:59,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2022-01-31 22:55:59,362 INFO L87 Difference]: Start difference. First operand 134 states and 183 transitions. Second operand has 28 states, 28 states have (on average 3.75) internal successors, (105), 27 states have internal predecessors, (105), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:59,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:59,451 INFO L93 Difference]: Finished difference Result 150 states and 204 transitions. [2022-01-31 22:55:59,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-31 22:55:59,451 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.75) internal successors, (105), 27 states have internal predecessors, (105), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 108 [2022-01-31 22:55:59,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:59,452 INFO L225 Difference]: With dead ends: 150 [2022-01-31 22:55:59,452 INFO L226 Difference]: Without dead ends: 143 [2022-01-31 22:55:59,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2022-01-31 22:55:59,453 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 264 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:59,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 218 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:55:59,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-01-31 22:55:59,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 139. [2022-01-31 22:55:59,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 135 states have (on average 1.385185185185185) internal successors, (187), 135 states have internal predecessors, (187), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:59,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 190 transitions. [2022-01-31 22:55:59,459 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 190 transitions. Word has length 108 [2022-01-31 22:55:59,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:59,459 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 190 transitions. [2022-01-31 22:55:59,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.75) internal successors, (105), 27 states have internal predecessors, (105), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:59,459 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 190 transitions. [2022-01-31 22:55:59,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-31 22:55:59,460 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:59,460 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:59,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-31 22:55:59,460 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:59,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:59,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1164037607, now seen corresponding path program 24 times [2022-01-31 22:55:59,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:59,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480482347] [2022-01-31 22:55:59,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:59,463 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:59,463 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:59,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:59,465 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:59,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:59,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:59,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:59,862 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 22:55:59,862 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:59,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480482347] [2022-01-31 22:55:59,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [480482347] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:59,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:59,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-01-31 22:55:59,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091959896] [2022-01-31 22:55:59,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:59,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-31 22:55:59,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:59,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-31 22:55:59,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2022-01-31 22:55:59,864 INFO L87 Difference]: Start difference. First operand 139 states and 190 transitions. Second operand has 29 states, 29 states have (on average 3.7586206896551726) internal successors, (109), 28 states have internal predecessors, (109), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:59,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:59,958 INFO L93 Difference]: Finished difference Result 155 states and 211 transitions. [2022-01-31 22:55:59,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-31 22:55:59,958 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.7586206896551726) internal successors, (109), 28 states have internal predecessors, (109), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 112 [2022-01-31 22:55:59,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:59,959 INFO L225 Difference]: With dead ends: 155 [2022-01-31 22:55:59,959 INFO L226 Difference]: Without dead ends: 148 [2022-01-31 22:55:59,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2022-01-31 22:55:59,960 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 321 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:59,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 199 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:55:59,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-01-31 22:55:59,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2022-01-31 22:55:59,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 140 states have (on average 1.3857142857142857) internal successors, (194), 140 states have internal predecessors, (194), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:59,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 197 transitions. [2022-01-31 22:55:59,967 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 197 transitions. Word has length 112 [2022-01-31 22:55:59,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:59,967 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 197 transitions. [2022-01-31 22:55:59,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.7586206896551726) internal successors, (109), 28 states have internal predecessors, (109), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:59,967 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 197 transitions. [2022-01-31 22:55:59,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-31 22:55:59,968 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:59,968 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:59,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-31 22:55:59,969 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:59,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:59,969 INFO L85 PathProgramCache]: Analyzing trace with hash -643600850, now seen corresponding path program 25 times [2022-01-31 22:55:59,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:59,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718444211] [2022-01-31 22:55:59,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:59,987 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:59,988 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:59,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:59,989 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:00,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:00,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:00,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:00,398 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 22:56:00,398 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:00,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718444211] [2022-01-31 22:56:00,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [718444211] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:00,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:00,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-01-31 22:56:00,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979228732] [2022-01-31 22:56:00,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:00,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-31 22:56:00,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:00,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-31 22:56:00,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2022-01-31 22:56:00,400 INFO L87 Difference]: Start difference. First operand 144 states and 197 transitions. Second operand has 30 states, 30 states have (on average 3.7666666666666666) internal successors, (113), 29 states have internal predecessors, (113), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:00,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:00,490 INFO L93 Difference]: Finished difference Result 160 states and 218 transitions. [2022-01-31 22:56:00,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-31 22:56:00,490 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.7666666666666666) internal successors, (113), 29 states have internal predecessors, (113), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 116 [2022-01-31 22:56:00,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:00,491 INFO L225 Difference]: With dead ends: 160 [2022-01-31 22:56:00,491 INFO L226 Difference]: Without dead ends: 153 [2022-01-31 22:56:00,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2022-01-31 22:56:00,492 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 294 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:00,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 192 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:00,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-01-31 22:56:00,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 149. [2022-01-31 22:56:00,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 145 states have (on average 1.3862068965517242) internal successors, (201), 145 states have internal predecessors, (201), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:00,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 204 transitions. [2022-01-31 22:56:00,497 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 204 transitions. Word has length 116 [2022-01-31 22:56:00,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:00,498 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 204 transitions. [2022-01-31 22:56:00,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.7666666666666666) internal successors, (113), 29 states have internal predecessors, (113), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:00,498 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 204 transitions. [2022-01-31 22:56:00,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-31 22:56:00,499 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:00,499 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:00,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-31 22:56:00,499 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:00,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:00,499 INFO L85 PathProgramCache]: Analyzing trace with hash 939365109, now seen corresponding path program 26 times [2022-01-31 22:56:00,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:00,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253671100] [2022-01-31 22:56:00,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:00,502 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:00,502 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:00,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:00,505 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:00,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:00,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:00,950 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 22:56:00,950 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:00,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253671100] [2022-01-31 22:56:00,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [253671100] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:00,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:00,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-01-31 22:56:00,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072336267] [2022-01-31 22:56:00,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:00,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-31 22:56:00,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:00,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-31 22:56:00,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2022-01-31 22:56:00,952 INFO L87 Difference]: Start difference. First operand 149 states and 204 transitions. Second operand has 31 states, 31 states have (on average 3.774193548387097) internal successors, (117), 30 states have internal predecessors, (117), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:01,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:01,049 INFO L93 Difference]: Finished difference Result 165 states and 225 transitions. [2022-01-31 22:56:01,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-31 22:56:01,050 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.774193548387097) internal successors, (117), 30 states have internal predecessors, (117), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 120 [2022-01-31 22:56:01,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:01,051 INFO L225 Difference]: With dead ends: 165 [2022-01-31 22:56:01,051 INFO L226 Difference]: Without dead ends: 158 [2022-01-31 22:56:01,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2022-01-31 22:56:01,052 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 306 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:01,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 233 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:01,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-01-31 22:56:01,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 154. [2022-01-31 22:56:01,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 150 states have (on average 1.3866666666666667) internal successors, (208), 150 states have internal predecessors, (208), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:01,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 211 transitions. [2022-01-31 22:56:01,058 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 211 transitions. Word has length 120 [2022-01-31 22:56:01,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:01,058 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 211 transitions. [2022-01-31 22:56:01,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.774193548387097) internal successors, (117), 30 states have internal predecessors, (117), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:01,058 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 211 transitions. [2022-01-31 22:56:01,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-31 22:56:01,059 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:01,059 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:01,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-31 22:56:01,059 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:01,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:01,060 INFO L85 PathProgramCache]: Analyzing trace with hash -543556548, now seen corresponding path program 27 times [2022-01-31 22:56:01,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:01,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663190499] [2022-01-31 22:56:01,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:01,063 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:01,063 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:01,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:01,065 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:01,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:01,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:01,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:01,549 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 22:56:01,549 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:01,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663190499] [2022-01-31 22:56:01,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [663190499] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:01,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:01,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-31 22:56:01,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774779341] [2022-01-31 22:56:01,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:01,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-31 22:56:01,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:01,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-31 22:56:01,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2022-01-31 22:56:01,551 INFO L87 Difference]: Start difference. First operand 154 states and 211 transitions. Second operand has 32 states, 32 states have (on average 3.78125) internal successors, (121), 31 states have internal predecessors, (121), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:01,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:01,654 INFO L93 Difference]: Finished difference Result 170 states and 232 transitions. [2022-01-31 22:56:01,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-31 22:56:01,655 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.78125) internal successors, (121), 31 states have internal predecessors, (121), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 124 [2022-01-31 22:56:01,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:01,656 INFO L225 Difference]: With dead ends: 170 [2022-01-31 22:56:01,656 INFO L226 Difference]: Without dead ends: 163 [2022-01-31 22:56:01,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2022-01-31 22:56:01,657 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 384 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:01,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 202 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:01,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-01-31 22:56:01,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2022-01-31 22:56:01,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 155 states have (on average 1.3870967741935485) internal successors, (215), 155 states have internal predecessors, (215), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:01,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 218 transitions. [2022-01-31 22:56:01,663 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 218 transitions. Word has length 124 [2022-01-31 22:56:01,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:01,663 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 218 transitions. [2022-01-31 22:56:01,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.78125) internal successors, (121), 31 states have internal predecessors, (121), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:01,663 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 218 transitions. [2022-01-31 22:56:01,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-31 22:56:01,664 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:01,664 INFO L514 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:01,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-31 22:56:01,664 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:01,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:01,665 INFO L85 PathProgramCache]: Analyzing trace with hash 616720899, now seen corresponding path program 28 times [2022-01-31 22:56:01,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:01,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1368433383] [2022-01-31 22:56:01,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:01,668 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:01,668 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:01,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:01,671 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:01,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:02,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:02,144 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 22:56:02,144 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:02,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1368433383] [2022-01-31 22:56:02,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1368433383] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:02,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:02,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-31 22:56:02,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554022846] [2022-01-31 22:56:02,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:02,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-31 22:56:02,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:02,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-31 22:56:02,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2022-01-31 22:56:02,146 INFO L87 Difference]: Start difference. First operand 159 states and 218 transitions. Second operand has 33 states, 33 states have (on average 3.787878787878788) internal successors, (125), 32 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:02,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:02,253 INFO L93 Difference]: Finished difference Result 175 states and 239 transitions. [2022-01-31 22:56:02,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-31 22:56:02,253 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.787878787878788) internal successors, (125), 32 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 128 [2022-01-31 22:56:02,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:02,254 INFO L225 Difference]: With dead ends: 175 [2022-01-31 22:56:02,254 INFO L226 Difference]: Without dead ends: 168 [2022-01-31 22:56:02,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2022-01-31 22:56:02,255 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 360 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:02,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 219 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:02,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-01-31 22:56:02,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 164. [2022-01-31 22:56:02,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 160 states have (on average 1.3875) internal successors, (222), 160 states have internal predecessors, (222), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:02,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 225 transitions. [2022-01-31 22:56:02,262 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 225 transitions. Word has length 128 [2022-01-31 22:56:02,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:02,262 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 225 transitions. [2022-01-31 22:56:02,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.787878787878788) internal successors, (125), 32 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:02,262 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 225 transitions. [2022-01-31 22:56:02,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-31 22:56:02,263 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:02,263 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:02,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-31 22:56:02,264 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:02,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:02,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1595892662, now seen corresponding path program 29 times [2022-01-31 22:56:02,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:02,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892109819] [2022-01-31 22:56:02,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:02,267 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:02,267 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:02,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:02,270 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:02,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:02,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:02,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:02,721 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 22:56:02,721 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:02,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892109819] [2022-01-31 22:56:02,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1892109819] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:02,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:02,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-01-31 22:56:02,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241188717] [2022-01-31 22:56:02,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:02,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-31 22:56:02,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:02,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-31 22:56:02,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2022-01-31 22:56:02,724 INFO L87 Difference]: Start difference. First operand 164 states and 225 transitions. Second operand has 34 states, 34 states have (on average 3.7941176470588234) internal successors, (129), 33 states have internal predecessors, (129), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:02,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:02,838 INFO L93 Difference]: Finished difference Result 180 states and 246 transitions. [2022-01-31 22:56:02,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-31 22:56:02,838 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.7941176470588234) internal successors, (129), 33 states have internal predecessors, (129), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 132 [2022-01-31 22:56:02,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:02,839 INFO L225 Difference]: With dead ends: 180 [2022-01-31 22:56:02,839 INFO L226 Difference]: Without dead ends: 173 [2022-01-31 22:56:02,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2022-01-31 22:56:02,840 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 447 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:02,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [447 Valid, 212 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:02,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-01-31 22:56:02,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 169. [2022-01-31 22:56:02,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 165 states have (on average 1.387878787878788) internal successors, (229), 165 states have internal predecessors, (229), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:02,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 232 transitions. [2022-01-31 22:56:02,846 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 232 transitions. Word has length 132 [2022-01-31 22:56:02,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:02,846 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 232 transitions. [2022-01-31 22:56:02,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.7941176470588234) internal successors, (129), 33 states have internal predecessors, (129), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:02,847 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 232 transitions. [2022-01-31 22:56:02,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-01-31 22:56:02,847 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:02,848 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:02,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-31 22:56:02,848 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:02,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:02,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1568779503, now seen corresponding path program 30 times [2022-01-31 22:56:02,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:02,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008587746] [2022-01-31 22:56:02,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:02,851 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:02,851 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:02,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:02,853 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:03,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:03,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:03,308 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 22:56:03,308 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:03,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008587746] [2022-01-31 22:56:03,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1008587746] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:03,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:03,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-01-31 22:56:03,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757029870] [2022-01-31 22:56:03,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:03,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-31 22:56:03,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:03,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-31 22:56:03,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 22:56:03,311 INFO L87 Difference]: Start difference. First operand 169 states and 232 transitions. Second operand has 35 states, 35 states have (on average 3.8) internal successors, (133), 34 states have internal predecessors, (133), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:03,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:03,424 INFO L93 Difference]: Finished difference Result 185 states and 253 transitions. [2022-01-31 22:56:03,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-31 22:56:03,424 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.8) internal successors, (133), 34 states have internal predecessors, (133), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 136 [2022-01-31 22:56:03,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:03,426 INFO L225 Difference]: With dead ends: 185 [2022-01-31 22:56:03,426 INFO L226 Difference]: Without dead ends: 178 [2022-01-31 22:56:03,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 22:56:03,427 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 429 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:03,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [429 Valid, 217 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:03,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-01-31 22:56:03,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 174. [2022-01-31 22:56:03,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 170 states have (on average 1.388235294117647) internal successors, (236), 170 states have internal predecessors, (236), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:03,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 239 transitions. [2022-01-31 22:56:03,433 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 239 transitions. Word has length 136 [2022-01-31 22:56:03,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:03,433 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 239 transitions. [2022-01-31 22:56:03,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.8) internal successors, (133), 34 states have internal predecessors, (133), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:03,433 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 239 transitions. [2022-01-31 22:56:03,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-31 22:56:03,434 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:03,434 INFO L514 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:03,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-31 22:56:03,435 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:03,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:03,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1656402344, now seen corresponding path program 31 times [2022-01-31 22:56:03,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:03,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900719586] [2022-01-31 22:56:03,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:03,438 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:03,438 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:03,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:03,440 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:03,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:03,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:04,004 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 22:56:04,004 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:04,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900719586] [2022-01-31 22:56:04,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1900719586] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:04,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:04,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-31 22:56:04,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892424466] [2022-01-31 22:56:04,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:04,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-31 22:56:04,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:04,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-31 22:56:04,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2022-01-31 22:56:04,007 INFO L87 Difference]: Start difference. First operand 174 states and 239 transitions. Second operand has 36 states, 36 states have (on average 3.8055555555555554) internal successors, (137), 35 states have internal predecessors, (137), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:04,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:04,146 INFO L93 Difference]: Finished difference Result 190 states and 260 transitions. [2022-01-31 22:56:04,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-31 22:56:04,146 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.8055555555555554) internal successors, (137), 35 states have internal predecessors, (137), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 140 [2022-01-31 22:56:04,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:04,147 INFO L225 Difference]: With dead ends: 190 [2022-01-31 22:56:04,147 INFO L226 Difference]: Without dead ends: 183 [2022-01-31 22:56:04,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2022-01-31 22:56:04,148 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 330 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:04,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 270 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:04,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-01-31 22:56:04,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 179. [2022-01-31 22:56:04,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 175 states have (on average 1.3885714285714286) internal successors, (243), 175 states have internal predecessors, (243), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:04,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 246 transitions. [2022-01-31 22:56:04,156 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 246 transitions. Word has length 140 [2022-01-31 22:56:04,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:04,156 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 246 transitions. [2022-01-31 22:56:04,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.8055555555555554) internal successors, (137), 35 states have internal predecessors, (137), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:04,157 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 246 transitions. [2022-01-31 22:56:04,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-01-31 22:56:04,158 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:04,158 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:04,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-31 22:56:04,158 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:04,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:04,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1711321569, now seen corresponding path program 32 times [2022-01-31 22:56:04,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:04,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673921389] [2022-01-31 22:56:04,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:04,163 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:04,163 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:04,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:04,165 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:04,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:04,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:04,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:04,689 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 22:56:04,689 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:04,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673921389] [2022-01-31 22:56:04,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1673921389] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:04,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:04,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-31 22:56:04,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918003644] [2022-01-31 22:56:04,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:04,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-31 22:56:04,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:04,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-31 22:56:04,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 22:56:04,691 INFO L87 Difference]: Start difference. First operand 179 states and 246 transitions. Second operand has 37 states, 37 states have (on average 3.810810810810811) internal successors, (141), 36 states have internal predecessors, (141), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:04,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:04,812 INFO L93 Difference]: Finished difference Result 195 states and 267 transitions. [2022-01-31 22:56:04,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-31 22:56:04,812 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.810810810810811) internal successors, (141), 36 states have internal predecessors, (141), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 144 [2022-01-31 22:56:04,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:04,813 INFO L225 Difference]: With dead ends: 195 [2022-01-31 22:56:04,813 INFO L226 Difference]: Without dead ends: 188 [2022-01-31 22:56:04,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 22:56:04,814 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 414 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:04,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [414 Valid, 251 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:04,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-01-31 22:56:04,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 184. [2022-01-31 22:56:04,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 180 states have (on average 1.3888888888888888) internal successors, (250), 180 states have internal predecessors, (250), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:04,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 253 transitions. [2022-01-31 22:56:04,820 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 253 transitions. Word has length 144 [2022-01-31 22:56:04,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:04,821 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 253 transitions. [2022-01-31 22:56:04,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.810810810810811) internal successors, (141), 36 states have internal predecessors, (141), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:04,821 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 253 transitions. [2022-01-31 22:56:04,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-01-31 22:56:04,822 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:04,822 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:04,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-31 22:56:04,822 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:04,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:04,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1500114330, now seen corresponding path program 33 times [2022-01-31 22:56:04,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:04,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559836104] [2022-01-31 22:56:04,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:04,827 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:04,827 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:04,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:04,829 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:05,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:05,408 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 22:56:05,408 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:05,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559836104] [2022-01-31 22:56:05,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1559836104] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:05,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:05,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-01-31 22:56:05,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123807933] [2022-01-31 22:56:05,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:05,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-31 22:56:05,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:05,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-31 22:56:05,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 22:56:05,410 INFO L87 Difference]: Start difference. First operand 184 states and 253 transitions. Second operand has 38 states, 38 states have (on average 3.8157894736842106) internal successors, (145), 37 states have internal predecessors, (145), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:05,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:05,536 INFO L93 Difference]: Finished difference Result 200 states and 274 transitions. [2022-01-31 22:56:05,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-31 22:56:05,536 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.8157894736842106) internal successors, (145), 37 states have internal predecessors, (145), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 148 [2022-01-31 22:56:05,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:05,537 INFO L225 Difference]: With dead ends: 200 [2022-01-31 22:56:05,537 INFO L226 Difference]: Without dead ends: 193 [2022-01-31 22:56:05,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 22:56:05,538 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 453 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:05,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [453 Valid, 244 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:05,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-01-31 22:56:05,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 189. [2022-01-31 22:56:05,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 185 states have (on average 1.3891891891891892) internal successors, (257), 185 states have internal predecessors, (257), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:05,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 260 transitions. [2022-01-31 22:56:05,544 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 260 transitions. Word has length 148 [2022-01-31 22:56:05,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:05,545 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 260 transitions. [2022-01-31 22:56:05,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.8157894736842106) internal successors, (145), 37 states have internal predecessors, (145), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:05,545 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 260 transitions. [2022-01-31 22:56:05,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-31 22:56:05,545 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:05,546 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:05,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-31 22:56:05,546 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:05,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:05,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1175673645, now seen corresponding path program 34 times [2022-01-31 22:56:05,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:05,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927939560] [2022-01-31 22:56:05,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:05,549 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:05,550 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:05,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:05,552 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:05,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:06,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:06,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:06,169 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 22:56:06,169 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:06,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927939560] [2022-01-31 22:56:06,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [927939560] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:06,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:06,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-01-31 22:56:06,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299413726] [2022-01-31 22:56:06,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:06,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-31 22:56:06,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:06,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-31 22:56:06,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 22:56:06,171 INFO L87 Difference]: Start difference. First operand 189 states and 260 transitions. Second operand has 39 states, 39 states have (on average 3.8205128205128207) internal successors, (149), 38 states have internal predecessors, (149), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:06,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:06,304 INFO L93 Difference]: Finished difference Result 205 states and 281 transitions. [2022-01-31 22:56:06,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-31 22:56:06,305 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.8205128205128207) internal successors, (149), 38 states have internal predecessors, (149), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 152 [2022-01-31 22:56:06,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:06,306 INFO L225 Difference]: With dead ends: 205 [2022-01-31 22:56:06,306 INFO L226 Difference]: Without dead ends: 198 [2022-01-31 22:56:06,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 22:56:06,307 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 393 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:06,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [393 Valid, 261 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:06,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-01-31 22:56:06,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 194. [2022-01-31 22:56:06,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 190 states have (on average 1.3894736842105264) internal successors, (264), 190 states have internal predecessors, (264), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:06,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 267 transitions. [2022-01-31 22:56:06,313 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 267 transitions. Word has length 152 [2022-01-31 22:56:06,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:06,314 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 267 transitions. [2022-01-31 22:56:06,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.8205128205128207) internal successors, (149), 38 states have internal predecessors, (149), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:06,314 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 267 transitions. [2022-01-31 22:56:06,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-31 22:56:06,315 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:06,315 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:06,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-31 22:56:06,315 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:06,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:06,315 INFO L85 PathProgramCache]: Analyzing trace with hash -526325644, now seen corresponding path program 35 times [2022-01-31 22:56:06,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:06,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420564927] [2022-01-31 22:56:06,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:06,319 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:06,319 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:06,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:06,321 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:06,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:06,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:06,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:06,919 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 22:56:06,919 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:06,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420564927] [2022-01-31 22:56:06,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [420564927] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:06,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:06,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-01-31 22:56:06,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139451458] [2022-01-31 22:56:06,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:06,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-31 22:56:06,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:06,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-31 22:56:06,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2022-01-31 22:56:06,921 INFO L87 Difference]: Start difference. First operand 194 states and 267 transitions. Second operand has 40 states, 40 states have (on average 3.825) internal successors, (153), 39 states have internal predecessors, (153), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:07,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:07,050 INFO L93 Difference]: Finished difference Result 210 states and 288 transitions. [2022-01-31 22:56:07,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-31 22:56:07,050 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.825) internal successors, (153), 39 states have internal predecessors, (153), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 156 [2022-01-31 22:56:07,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:07,052 INFO L225 Difference]: With dead ends: 210 [2022-01-31 22:56:07,052 INFO L226 Difference]: Without dead ends: 203 [2022-01-31 22:56:07,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2022-01-31 22:56:07,053 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 468 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:07,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [468 Valid, 230 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:07,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-01-31 22:56:07,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 199. [2022-01-31 22:56:07,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 195 states have (on average 1.3897435897435897) internal successors, (271), 195 states have internal predecessors, (271), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:07,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 274 transitions. [2022-01-31 22:56:07,070 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 274 transitions. Word has length 156 [2022-01-31 22:56:07,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:07,070 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 274 transitions. [2022-01-31 22:56:07,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.825) internal successors, (153), 39 states have internal predecessors, (153), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:07,070 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 274 transitions. [2022-01-31 22:56:07,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-31 22:56:07,072 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:07,074 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:07,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-31 22:56:07,074 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:07,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:07,074 INFO L85 PathProgramCache]: Analyzing trace with hash 864582203, now seen corresponding path program 36 times [2022-01-31 22:56:07,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:07,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379212658] [2022-01-31 22:56:07,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:07,078 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:07,078 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:07,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:07,082 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:07,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:07,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:07,745 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 22:56:07,745 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:07,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379212658] [2022-01-31 22:56:07,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [379212658] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:07,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:07,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2022-01-31 22:56:07,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207356362] [2022-01-31 22:56:07,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:07,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-31 22:56:07,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:07,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-31 22:56:07,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2022-01-31 22:56:07,747 INFO L87 Difference]: Start difference. First operand 199 states and 274 transitions. Second operand has 41 states, 41 states have (on average 3.8292682926829267) internal successors, (157), 40 states have internal predecessors, (157), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:07,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:07,879 INFO L93 Difference]: Finished difference Result 215 states and 295 transitions. [2022-01-31 22:56:07,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-31 22:56:07,889 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.8292682926829267) internal successors, (157), 40 states have internal predecessors, (157), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 160 [2022-01-31 22:56:07,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:07,891 INFO L225 Difference]: With dead ends: 215 [2022-01-31 22:56:07,891 INFO L226 Difference]: Without dead ends: 208 [2022-01-31 22:56:07,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2022-01-31 22:56:07,893 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 531 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:07,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 259 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:07,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-01-31 22:56:07,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 204. [2022-01-31 22:56:07,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 200 states have (on average 1.39) internal successors, (278), 200 states have internal predecessors, (278), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:07,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 281 transitions. [2022-01-31 22:56:07,904 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 281 transitions. Word has length 160 [2022-01-31 22:56:07,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:07,904 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 281 transitions. [2022-01-31 22:56:07,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.8292682926829267) internal successors, (157), 40 states have internal predecessors, (157), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:07,904 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 281 transitions. [2022-01-31 22:56:07,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-31 22:56:07,905 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:07,905 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:07,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-31 22:56:07,905 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:07,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:07,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1053568894, now seen corresponding path program 37 times [2022-01-31 22:56:07,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:07,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461861890] [2022-01-31 22:56:07,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:07,913 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:07,913 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:07,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:07,917 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:07,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:08,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:08,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:08,579 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 22:56:08,579 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:08,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [461861890] [2022-01-31 22:56:08,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [461861890] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:08,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:08,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-01-31 22:56:08,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511605810] [2022-01-31 22:56:08,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:08,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-31 22:56:08,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:08,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-31 22:56:08,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2022-01-31 22:56:08,581 INFO L87 Difference]: Start difference. First operand 204 states and 281 transitions. Second operand has 42 states, 42 states have (on average 3.8333333333333335) internal successors, (161), 41 states have internal predecessors, (161), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:08,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:08,723 INFO L93 Difference]: Finished difference Result 220 states and 302 transitions. [2022-01-31 22:56:08,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-31 22:56:08,724 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.8333333333333335) internal successors, (161), 41 states have internal predecessors, (161), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 164 [2022-01-31 22:56:08,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:08,725 INFO L225 Difference]: With dead ends: 220 [2022-01-31 22:56:08,725 INFO L226 Difference]: Without dead ends: 213 [2022-01-31 22:56:08,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2022-01-31 22:56:08,726 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 516 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:08,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [516 Valid, 252 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:08,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-01-31 22:56:08,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 209. [2022-01-31 22:56:08,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 205 states have (on average 1.3902439024390243) internal successors, (285), 205 states have internal predecessors, (285), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:08,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 288 transitions. [2022-01-31 22:56:08,733 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 288 transitions. Word has length 164 [2022-01-31 22:56:08,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:08,733 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 288 transitions. [2022-01-31 22:56:08,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.8333333333333335) internal successors, (161), 41 states have internal predecessors, (161), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:08,733 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 288 transitions. [2022-01-31 22:56:08,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-31 22:56:08,734 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:08,734 INFO L514 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:08,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-31 22:56:08,735 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:08,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:08,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1093446473, now seen corresponding path program 38 times [2022-01-31 22:56:08,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:08,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324363399] [2022-01-31 22:56:08,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:08,739 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:08,739 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:08,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:08,741 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:08,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:09,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:09,411 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 22:56:09,411 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:09,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324363399] [2022-01-31 22:56:09,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [324363399] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:09,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:09,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-01-31 22:56:09,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601982057] [2022-01-31 22:56:09,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:09,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-31 22:56:09,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:09,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-31 22:56:09,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2022-01-31 22:56:09,413 INFO L87 Difference]: Start difference. First operand 209 states and 288 transitions. Second operand has 43 states, 43 states have (on average 3.8372093023255816) internal successors, (165), 42 states have internal predecessors, (165), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:09,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:09,557 INFO L93 Difference]: Finished difference Result 225 states and 309 transitions. [2022-01-31 22:56:09,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-31 22:56:09,558 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.8372093023255816) internal successors, (165), 42 states have internal predecessors, (165), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 168 [2022-01-31 22:56:09,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:09,559 INFO L225 Difference]: With dead ends: 225 [2022-01-31 22:56:09,559 INFO L226 Difference]: Without dead ends: 218 [2022-01-31 22:56:09,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2022-01-31 22:56:09,560 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 558 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:09,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [558 Valid, 269 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:09,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-01-31 22:56:09,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 214. [2022-01-31 22:56:09,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 210 states have (on average 1.3904761904761904) internal successors, (292), 210 states have internal predecessors, (292), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:09,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 295 transitions. [2022-01-31 22:56:09,567 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 295 transitions. Word has length 168 [2022-01-31 22:56:09,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:09,567 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 295 transitions. [2022-01-31 22:56:09,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.8372093023255816) internal successors, (165), 42 states have internal predecessors, (165), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:09,567 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 295 transitions. [2022-01-31 22:56:09,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-01-31 22:56:09,568 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:09,568 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:09,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-31 22:56:09,569 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:09,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:09,569 INFO L85 PathProgramCache]: Analyzing trace with hash 270322320, now seen corresponding path program 39 times [2022-01-31 22:56:09,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:09,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81335846] [2022-01-31 22:56:09,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:09,572 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:09,572 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:09,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:09,574 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:10,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:10,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:10,262 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 22:56:10,262 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:10,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81335846] [2022-01-31 22:56:10,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [81335846] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:10,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:10,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-01-31 22:56:10,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885046796] [2022-01-31 22:56:10,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:10,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-31 22:56:10,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:10,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-31 22:56:10,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2022-01-31 22:56:10,264 INFO L87 Difference]: Start difference. First operand 214 states and 295 transitions. Second operand has 44 states, 44 states have (on average 3.840909090909091) internal successors, (169), 43 states have internal predecessors, (169), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:10,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:10,400 INFO L93 Difference]: Finished difference Result 230 states and 316 transitions. [2022-01-31 22:56:10,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-31 22:56:10,401 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.840909090909091) internal successors, (169), 43 states have internal predecessors, (169), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 172 [2022-01-31 22:56:10,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:10,402 INFO L225 Difference]: With dead ends: 230 [2022-01-31 22:56:10,402 INFO L226 Difference]: Without dead ends: 223 [2022-01-31 22:56:10,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2022-01-31 22:56:10,403 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 417 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:10,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 322 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:10,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-01-31 22:56:10,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 219. [2022-01-31 22:56:10,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 215 states have (on average 1.3906976744186046) internal successors, (299), 215 states have internal predecessors, (299), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:10,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 302 transitions. [2022-01-31 22:56:10,410 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 302 transitions. Word has length 172 [2022-01-31 22:56:10,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:10,411 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 302 transitions. [2022-01-31 22:56:10,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.840909090909091) internal successors, (169), 43 states have internal predecessors, (169), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:10,411 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 302 transitions. [2022-01-31 22:56:10,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-31 22:56:10,412 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:10,412 INFO L514 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:10,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-31 22:56:10,412 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:10,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:10,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1613894057, now seen corresponding path program 40 times [2022-01-31 22:56:10,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:10,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376700143] [2022-01-31 22:56:10,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:10,421 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:10,421 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:10,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:10,424 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:10,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:11,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:11,156 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 22:56:11,156 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:11,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376700143] [2022-01-31 22:56:11,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [376700143] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:11,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:11,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-01-31 22:56:11,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737641408] [2022-01-31 22:56:11,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:11,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-31 22:56:11,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:11,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-31 22:56:11,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 22:56:11,158 INFO L87 Difference]: Start difference. First operand 219 states and 302 transitions. Second operand has 45 states, 45 states have (on average 3.8444444444444446) internal successors, (173), 44 states have internal predecessors, (173), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:11,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:11,308 INFO L93 Difference]: Finished difference Result 235 states and 323 transitions. [2022-01-31 22:56:11,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-31 22:56:11,308 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.8444444444444446) internal successors, (173), 44 states have internal predecessors, (173), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 176 [2022-01-31 22:56:11,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:11,309 INFO L225 Difference]: With dead ends: 235 [2022-01-31 22:56:11,310 INFO L226 Difference]: Without dead ends: 228 [2022-01-31 22:56:11,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 22:56:11,311 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 543 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:11,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [543 Valid, 291 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:11,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-01-31 22:56:11,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 224. [2022-01-31 22:56:11,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 220 states have (on average 1.3909090909090909) internal successors, (306), 220 states have internal predecessors, (306), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:11,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 309 transitions. [2022-01-31 22:56:11,318 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 309 transitions. Word has length 176 [2022-01-31 22:56:11,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:11,320 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 309 transitions. [2022-01-31 22:56:11,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.8444444444444446) internal successors, (173), 44 states have internal predecessors, (173), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:11,320 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 309 transitions. [2022-01-31 22:56:11,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-01-31 22:56:11,322 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:11,322 INFO L514 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:11,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-31 22:56:11,322 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:11,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:11,323 INFO L85 PathProgramCache]: Analyzing trace with hash -416688482, now seen corresponding path program 41 times [2022-01-31 22:56:11,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:11,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [762010577] [2022-01-31 22:56:11,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:11,327 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:11,327 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:11,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:11,329 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:11,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:12,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:12,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:12,168 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 22:56:12,168 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:12,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [762010577] [2022-01-31 22:56:12,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [762010577] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:12,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:12,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-01-31 22:56:12,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102526683] [2022-01-31 22:56:12,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:12,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-31 22:56:12,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:12,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-31 22:56:12,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 22:56:12,169 INFO L87 Difference]: Start difference. First operand 224 states and 309 transitions. Second operand has 46 states, 46 states have (on average 3.847826086956522) internal successors, (177), 45 states have internal predecessors, (177), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:12,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:12,324 INFO L93 Difference]: Finished difference Result 240 states and 330 transitions. [2022-01-31 22:56:12,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-31 22:56:12,325 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.847826086956522) internal successors, (177), 45 states have internal predecessors, (177), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 180 [2022-01-31 22:56:12,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:12,326 INFO L225 Difference]: With dead ends: 240 [2022-01-31 22:56:12,326 INFO L226 Difference]: Without dead ends: 233 [2022-01-31 22:56:12,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 22:56:12,327 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 501 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:12,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [501 Valid, 296 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:12,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-01-31 22:56:12,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 229. [2022-01-31 22:56:12,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 225 states have (on average 1.3911111111111112) internal successors, (313), 225 states have internal predecessors, (313), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:12,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 316 transitions. [2022-01-31 22:56:12,334 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 316 transitions. Word has length 180 [2022-01-31 22:56:12,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:12,334 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 316 transitions. [2022-01-31 22:56:12,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.847826086956522) internal successors, (177), 45 states have internal predecessors, (177), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:12,334 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 316 transitions. [2022-01-31 22:56:12,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-01-31 22:56:12,335 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:12,335 INFO L514 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:12,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-31 22:56:12,336 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:12,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:12,336 INFO L85 PathProgramCache]: Analyzing trace with hash -767933595, now seen corresponding path program 42 times [2022-01-31 22:56:12,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:12,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857378235] [2022-01-31 22:56:12,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:12,339 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:12,339 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:12,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:12,342 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:12,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:13,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:13,169 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 22:56:13,169 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:13,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857378235] [2022-01-31 22:56:13,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [857378235] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:13,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:13,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2022-01-31 22:56:13,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906745013] [2022-01-31 22:56:13,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:13,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-31 22:56:13,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:13,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-31 22:56:13,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2022-01-31 22:56:13,171 INFO L87 Difference]: Start difference. First operand 229 states and 316 transitions. Second operand has 47 states, 47 states have (on average 3.851063829787234) internal successors, (181), 46 states have internal predecessors, (181), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:13,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:13,329 INFO L93 Difference]: Finished difference Result 245 states and 337 transitions. [2022-01-31 22:56:13,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-31 22:56:13,329 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.851063829787234) internal successors, (181), 46 states have internal predecessors, (181), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 184 [2022-01-31 22:56:13,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:13,330 INFO L225 Difference]: With dead ends: 245 [2022-01-31 22:56:13,330 INFO L226 Difference]: Without dead ends: 238 [2022-01-31 22:56:13,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2022-01-31 22:56:13,331 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 603 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:13,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [603 Valid, 289 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:13,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-01-31 22:56:13,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 234. [2022-01-31 22:56:13,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 230 states have (on average 1.391304347826087) internal successors, (320), 230 states have internal predecessors, (320), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:13,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 323 transitions. [2022-01-31 22:56:13,338 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 323 transitions. Word has length 184 [2022-01-31 22:56:13,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:13,339 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 323 transitions. [2022-01-31 22:56:13,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.851063829787234) internal successors, (181), 46 states have internal predecessors, (181), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:13,339 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 323 transitions. [2022-01-31 22:56:13,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-01-31 22:56:13,340 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:13,340 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:13,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-31 22:56:13,340 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:13,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:13,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1305938772, now seen corresponding path program 43 times [2022-01-31 22:56:13,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:13,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [560743500] [2022-01-31 22:56:13,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:13,344 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:13,344 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:13,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:13,346 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:14,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:14,172 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 22:56:14,172 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:14,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [560743500] [2022-01-31 22:56:14,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [560743500] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:14,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:14,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-01-31 22:56:14,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685707749] [2022-01-31 22:56:14,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:14,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-01-31 22:56:14,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:14,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-01-31 22:56:14,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2022-01-31 22:56:14,174 INFO L87 Difference]: Start difference. First operand 234 states and 323 transitions. Second operand has 48 states, 48 states have (on average 3.8541666666666665) internal successors, (185), 47 states have internal predecessors, (185), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:14,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:14,322 INFO L93 Difference]: Finished difference Result 250 states and 344 transitions. [2022-01-31 22:56:14,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-31 22:56:14,323 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.8541666666666665) internal successors, (185), 47 states have internal predecessors, (185), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 188 [2022-01-31 22:56:14,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:14,324 INFO L225 Difference]: With dead ends: 250 [2022-01-31 22:56:14,324 INFO L226 Difference]: Without dead ends: 243 [2022-01-31 22:56:14,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2022-01-31 22:56:14,325 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 579 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:14,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [579 Valid, 294 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:14,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-01-31 22:56:14,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 239. [2022-01-31 22:56:14,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 235 states have (on average 1.3914893617021276) internal successors, (327), 235 states have internal predecessors, (327), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:14,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 330 transitions. [2022-01-31 22:56:14,332 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 330 transitions. Word has length 188 [2022-01-31 22:56:14,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:14,333 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 330 transitions. [2022-01-31 22:56:14,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.8541666666666665) internal successors, (185), 47 states have internal predecessors, (185), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:14,333 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 330 transitions. [2022-01-31 22:56:14,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-01-31 22:56:14,334 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:14,334 INFO L514 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:14,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-31 22:56:14,334 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:14,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:14,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1388336525, now seen corresponding path program 44 times [2022-01-31 22:56:14,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:14,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620673051] [2022-01-31 22:56:14,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:14,339 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:14,340 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:14,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:14,342 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:15,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:15,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:15,264 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 22:56:15,264 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:15,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620673051] [2022-01-31 22:56:15,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1620673051] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:15,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:15,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-01-31 22:56:15,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207247889] [2022-01-31 22:56:15,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:15,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-31 22:56:15,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:15,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-31 22:56:15,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 22:56:15,266 INFO L87 Difference]: Start difference. First operand 239 states and 330 transitions. Second operand has 49 states, 49 states have (on average 3.857142857142857) internal successors, (189), 48 states have internal predecessors, (189), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:15,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:15,431 INFO L93 Difference]: Finished difference Result 255 states and 351 transitions. [2022-01-31 22:56:15,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-31 22:56:15,431 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.857142857142857) internal successors, (189), 48 states have internal predecessors, (189), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 192 [2022-01-31 22:56:15,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:15,432 INFO L225 Difference]: With dead ends: 255 [2022-01-31 22:56:15,433 INFO L226 Difference]: Without dead ends: 248 [2022-01-31 22:56:15,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 22:56:15,433 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 681 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:15,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 287 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:15,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-01-31 22:56:15,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 244. [2022-01-31 22:56:15,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 240 states have (on average 1.3916666666666666) internal successors, (334), 240 states have internal predecessors, (334), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:15,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 337 transitions. [2022-01-31 22:56:15,441 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 337 transitions. Word has length 192 [2022-01-31 22:56:15,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:15,441 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 337 transitions. [2022-01-31 22:56:15,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.857142857142857) internal successors, (189), 48 states have internal predecessors, (189), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:15,441 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 337 transitions. [2022-01-31 22:56:15,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-01-31 22:56:15,442 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:15,442 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:15,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-31 22:56:15,442 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:15,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:15,443 INFO L85 PathProgramCache]: Analyzing trace with hash 786965690, now seen corresponding path program 45 times [2022-01-31 22:56:15,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:15,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521242177] [2022-01-31 22:56:15,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:15,451 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:15,452 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:15,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:15,455 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:15,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:16,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:16,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:16,330 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 22:56:16,331 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:16,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521242177] [2022-01-31 22:56:16,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1521242177] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:16,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:16,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2022-01-31 22:56:16,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957053324] [2022-01-31 22:56:16,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:16,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-31 22:56:16,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:16,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-31 22:56:16,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2022-01-31 22:56:16,332 INFO L87 Difference]: Start difference. First operand 244 states and 337 transitions. Second operand has 50 states, 50 states have (on average 3.86) internal successors, (193), 49 states have internal predecessors, (193), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:16,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:16,512 INFO L93 Difference]: Finished difference Result 260 states and 358 transitions. [2022-01-31 22:56:16,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-31 22:56:16,513 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.86) internal successors, (193), 49 states have internal predecessors, (193), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 196 [2022-01-31 22:56:16,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:16,514 INFO L225 Difference]: With dead ends: 260 [2022-01-31 22:56:16,514 INFO L226 Difference]: Without dead ends: 253 [2022-01-31 22:56:16,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2022-01-31 22:56:16,515 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 663 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:16,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [663 Valid, 280 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:16,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-01-31 22:56:16,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 249. [2022-01-31 22:56:16,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 245 states have (on average 1.3918367346938776) internal successors, (341), 245 states have internal predecessors, (341), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:16,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 344 transitions. [2022-01-31 22:56:16,522 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 344 transitions. Word has length 196 [2022-01-31 22:56:16,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:16,522 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 344 transitions. [2022-01-31 22:56:16,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.86) internal successors, (193), 49 states have internal predecessors, (193), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:16,523 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 344 transitions. [2022-01-31 22:56:16,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-01-31 22:56:16,524 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:16,524 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:16,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-31 22:56:16,524 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:16,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:16,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1470899073, now seen corresponding path program 46 times [2022-01-31 22:56:16,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:16,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362109494] [2022-01-31 22:56:16,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:16,531 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:16,531 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:16,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:16,533 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:17,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:17,427 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 22:56:17,427 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:17,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362109494] [2022-01-31 22:56:17,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [362109494] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:17,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:17,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2022-01-31 22:56:17,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100017657] [2022-01-31 22:56:17,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:17,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-31 22:56:17,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:17,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-31 22:56:17,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2022-01-31 22:56:17,429 INFO L87 Difference]: Start difference. First operand 249 states and 344 transitions. Second operand has 51 states, 51 states have (on average 3.8627450980392157) internal successors, (197), 50 states have internal predecessors, (197), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:17,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:17,630 INFO L93 Difference]: Finished difference Result 265 states and 365 transitions. [2022-01-31 22:56:17,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-31 22:56:17,630 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.8627450980392157) internal successors, (197), 50 states have internal predecessors, (197), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 200 [2022-01-31 22:56:17,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:17,631 INFO L225 Difference]: With dead ends: 265 [2022-01-31 22:56:17,632 INFO L226 Difference]: Without dead ends: 258 [2022-01-31 22:56:17,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2022-01-31 22:56:17,632 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 594 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:17,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 333 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:17,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-01-31 22:56:17,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 254. [2022-01-31 22:56:17,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 250 states have (on average 1.392) internal successors, (348), 250 states have internal predecessors, (348), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:17,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 351 transitions. [2022-01-31 22:56:17,640 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 351 transitions. Word has length 200 [2022-01-31 22:56:17,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:17,640 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 351 transitions. [2022-01-31 22:56:17,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.8627450980392157) internal successors, (197), 50 states have internal predecessors, (197), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:17,641 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 351 transitions. [2022-01-31 22:56:17,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-01-31 22:56:17,641 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:17,642 INFO L514 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:17,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-31 22:56:17,642 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:17,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:17,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1832216264, now seen corresponding path program 47 times [2022-01-31 22:56:17,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:17,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372273838] [2022-01-31 22:56:17,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:17,645 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:17,645 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:17,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:17,648 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:18,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:18,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:18,656 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 22:56:18,657 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:18,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372273838] [2022-01-31 22:56:18,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [372273838] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:18,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:18,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 22:56:18,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360437126] [2022-01-31 22:56:18,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:18,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 22:56:18,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:18,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 22:56:18,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 22:56:18,660 INFO L87 Difference]: Start difference. First operand 254 states and 351 transitions. Second operand has 52 states, 52 states have (on average 3.8653846153846154) internal successors, (201), 51 states have internal predecessors, (201), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:18,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:18,851 INFO L93 Difference]: Finished difference Result 270 states and 372 transitions. [2022-01-31 22:56:18,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-31 22:56:18,852 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.8653846153846154) internal successors, (201), 51 states have internal predecessors, (201), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 204 [2022-01-31 22:56:18,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:18,853 INFO L225 Difference]: With dead ends: 270 [2022-01-31 22:56:18,853 INFO L226 Difference]: Without dead ends: 263 [2022-01-31 22:56:18,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 22:56:18,854 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 588 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:18,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [588 Valid, 326 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:18,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-01-31 22:56:18,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 259. [2022-01-31 22:56:18,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 255 states have (on average 1.392156862745098) internal successors, (355), 255 states have internal predecessors, (355), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:18,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 358 transitions. [2022-01-31 22:56:18,861 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 358 transitions. Word has length 204 [2022-01-31 22:56:18,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:18,862 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 358 transitions. [2022-01-31 22:56:18,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.8653846153846154) internal successors, (201), 51 states have internal predecessors, (201), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:18,862 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 358 transitions. [2022-01-31 22:56:18,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-01-31 22:56:18,863 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:18,863 INFO L514 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:18,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-31 22:56:18,863 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:18,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:18,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1246604943, now seen corresponding path program 48 times [2022-01-31 22:56:18,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:18,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468411642] [2022-01-31 22:56:18,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:18,866 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:18,866 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:18,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:18,869 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:19,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:19,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:19,879 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 22:56:19,880 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:19,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468411642] [2022-01-31 22:56:19,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [468411642] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:19,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:19,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-01-31 22:56:19,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793983993] [2022-01-31 22:56:19,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:19,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-01-31 22:56:19,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:19,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-01-31 22:56:19,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2022-01-31 22:56:19,882 INFO L87 Difference]: Start difference. First operand 259 states and 358 transitions. Second operand has 53 states, 53 states have (on average 3.8679245283018866) internal successors, (205), 52 states have internal predecessors, (205), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:20,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:20,091 INFO L93 Difference]: Finished difference Result 275 states and 379 transitions. [2022-01-31 22:56:20,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-31 22:56:20,092 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 3.8679245283018866) internal successors, (205), 52 states have internal predecessors, (205), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 208 [2022-01-31 22:56:20,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:20,093 INFO L225 Difference]: With dead ends: 275 [2022-01-31 22:56:20,093 INFO L226 Difference]: Without dead ends: 268 [2022-01-31 22:56:20,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2022-01-31 22:56:20,094 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 741 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:20,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [741 Valid, 307 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:20,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-01-31 22:56:20,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 264. [2022-01-31 22:56:20,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 260 states have (on average 1.3923076923076922) internal successors, (362), 260 states have internal predecessors, (362), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:20,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 365 transitions. [2022-01-31 22:56:20,101 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 365 transitions. Word has length 208 [2022-01-31 22:56:20,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:20,102 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 365 transitions. [2022-01-31 22:56:20,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 3.8679245283018866) internal successors, (205), 52 states have internal predecessors, (205), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:20,102 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 365 transitions. [2022-01-31 22:56:20,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-01-31 22:56:20,103 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:20,103 INFO L514 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:20,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-01-31 22:56:20,103 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:20,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:20,108 INFO L85 PathProgramCache]: Analyzing trace with hash -824263978, now seen corresponding path program 49 times [2022-01-31 22:56:20,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:20,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452990753] [2022-01-31 22:56:20,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:20,112 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:20,112 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:20,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:20,114 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:20,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:21,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:21,111 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 22:56:21,111 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:21,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452990753] [2022-01-31 22:56:21,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [452990753] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:21,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:21,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-01-31 22:56:21,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468295543] [2022-01-31 22:56:21,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:21,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-01-31 22:56:21,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:21,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-01-31 22:56:21,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2022-01-31 22:56:21,113 INFO L87 Difference]: Start difference. First operand 264 states and 365 transitions. Second operand has 54 states, 54 states have (on average 3.8703703703703702) internal successors, (209), 53 states have internal predecessors, (209), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:21,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:21,294 INFO L93 Difference]: Finished difference Result 280 states and 386 transitions. [2022-01-31 22:56:21,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-31 22:56:21,295 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 3.8703703703703702) internal successors, (209), 53 states have internal predecessors, (209), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 212 [2022-01-31 22:56:21,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:21,296 INFO L225 Difference]: With dead ends: 280 [2022-01-31 22:56:21,296 INFO L226 Difference]: Without dead ends: 273 [2022-01-31 22:56:21,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2022-01-31 22:56:21,297 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 693 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:21,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [693 Valid, 324 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:21,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-01-31 22:56:21,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 269. [2022-01-31 22:56:21,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 265 states have (on average 1.3924528301886792) internal successors, (369), 265 states have internal predecessors, (369), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:21,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 372 transitions. [2022-01-31 22:56:21,305 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 372 transitions. Word has length 212 [2022-01-31 22:56:21,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:21,305 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 372 transitions. [2022-01-31 22:56:21,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 3.8703703703703702) internal successors, (209), 53 states have internal predecessors, (209), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:21,305 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 372 transitions. [2022-01-31 22:56:21,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-01-31 22:56:21,306 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:21,306 INFO L514 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:21,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-01-31 22:56:21,307 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:21,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:21,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1341279133, now seen corresponding path program 50 times [2022-01-31 22:56:21,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:21,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034297754] [2022-01-31 22:56:21,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:21,312 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:21,312 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:21,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:21,314 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:21,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:22,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:22,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:22,317 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 22:56:22,317 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:22,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034297754] [2022-01-31 22:56:22,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1034297754] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:22,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:22,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2022-01-31 22:56:22,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346143115] [2022-01-31 22:56:22,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:22,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-01-31 22:56:22,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:22,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-01-31 22:56:22,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2022-01-31 22:56:22,320 INFO L87 Difference]: Start difference. First operand 269 states and 372 transitions. Second operand has 55 states, 55 states have (on average 3.8727272727272726) internal successors, (213), 54 states have internal predecessors, (213), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:22,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:22,524 INFO L93 Difference]: Finished difference Result 285 states and 393 transitions. [2022-01-31 22:56:22,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-31 22:56:22,525 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.8727272727272726) internal successors, (213), 54 states have internal predecessors, (213), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 216 [2022-01-31 22:56:22,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:22,526 INFO L225 Difference]: With dead ends: 285 [2022-01-31 22:56:22,526 INFO L226 Difference]: Without dead ends: 278 [2022-01-31 22:56:22,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2022-01-31 22:56:22,528 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 684 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:22,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [684 Valid, 341 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:22,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-01-31 22:56:22,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 274. [2022-01-31 22:56:22,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 270 states have (on average 1.3925925925925926) internal successors, (376), 270 states have internal predecessors, (376), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:22,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 379 transitions. [2022-01-31 22:56:22,535 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 379 transitions. Word has length 216 [2022-01-31 22:56:22,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:22,536 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 379 transitions. [2022-01-31 22:56:22,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.8727272727272726) internal successors, (213), 54 states have internal predecessors, (213), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:22,536 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 379 transitions. [2022-01-31 22:56:22,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-01-31 22:56:22,537 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:22,537 INFO L514 BasicCegarLoop]: trace histogram [52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:22,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-31 22:56:22,537 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:22,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:22,538 INFO L85 PathProgramCache]: Analyzing trace with hash 129114340, now seen corresponding path program 51 times [2022-01-31 22:56:22,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:22,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89696731] [2022-01-31 22:56:22,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:22,540 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:22,540 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:22,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:22,543 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:22,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:23,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:23,635 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 22:56:23,635 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:23,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89696731] [2022-01-31 22:56:23,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [89696731] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:23,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:23,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2022-01-31 22:56:23,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303854211] [2022-01-31 22:56:23,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:23,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-01-31 22:56:23,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:23,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-01-31 22:56:23,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2022-01-31 22:56:23,637 INFO L87 Difference]: Start difference. First operand 274 states and 379 transitions. Second operand has 56 states, 56 states have (on average 3.875) internal successors, (217), 55 states have internal predecessors, (217), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:23,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:23,827 INFO L93 Difference]: Finished difference Result 290 states and 400 transitions. [2022-01-31 22:56:23,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-31 22:56:23,827 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 3.875) internal successors, (217), 55 states have internal predecessors, (217), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 220 [2022-01-31 22:56:23,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:23,828 INFO L225 Difference]: With dead ends: 290 [2022-01-31 22:56:23,828 INFO L226 Difference]: Without dead ends: 283 [2022-01-31 22:56:23,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2022-01-31 22:56:23,829 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 711 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:23,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [711 Valid, 334 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:23,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-01-31 22:56:23,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 279. [2022-01-31 22:56:23,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 275 states have (on average 1.3927272727272728) internal successors, (383), 275 states have internal predecessors, (383), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:23,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 386 transitions. [2022-01-31 22:56:23,837 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 386 transitions. Word has length 220 [2022-01-31 22:56:23,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:23,837 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 386 transitions. [2022-01-31 22:56:23,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 3.875) internal successors, (217), 55 states have internal predecessors, (217), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:23,838 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 386 transitions. [2022-01-31 22:56:23,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-01-31 22:56:23,839 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:23,839 INFO L514 BasicCegarLoop]: trace histogram [53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:23,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-01-31 22:56:23,839 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:23,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:23,840 INFO L85 PathProgramCache]: Analyzing trace with hash -2056783189, now seen corresponding path program 52 times [2022-01-31 22:56:23,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:23,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020983434] [2022-01-31 22:56:23,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:23,843 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:23,843 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:23,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:23,845 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:23,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:24,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:24,986 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 22:56:24,986 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:24,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020983434] [2022-01-31 22:56:24,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1020983434] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:24,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:24,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2022-01-31 22:56:24,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085854059] [2022-01-31 22:56:24,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:24,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-01-31 22:56:24,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:24,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-01-31 22:56:24,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2022-01-31 22:56:24,988 INFO L87 Difference]: Start difference. First operand 279 states and 386 transitions. Second operand has 57 states, 57 states have (on average 3.8771929824561404) internal successors, (221), 56 states have internal predecessors, (221), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:25,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:25,185 INFO L93 Difference]: Finished difference Result 295 states and 407 transitions. [2022-01-31 22:56:25,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-31 22:56:25,186 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 3.8771929824561404) internal successors, (221), 56 states have internal predecessors, (221), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 224 [2022-01-31 22:56:25,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:25,187 INFO L225 Difference]: With dead ends: 295 [2022-01-31 22:56:25,187 INFO L226 Difference]: Without dead ends: 288 [2022-01-31 22:56:25,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2022-01-31 22:56:25,188 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 621 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:25,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [621 Valid, 363 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:25,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-01-31 22:56:25,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 284. [2022-01-31 22:56:25,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 280 states have (on average 1.3928571428571428) internal successors, (390), 280 states have internal predecessors, (390), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:25,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 393 transitions. [2022-01-31 22:56:25,195 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 393 transitions. Word has length 224 [2022-01-31 22:56:25,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:25,195 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 393 transitions. [2022-01-31 22:56:25,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 3.8771929824561404) internal successors, (221), 56 states have internal predecessors, (221), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:25,196 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 393 transitions. [2022-01-31 22:56:25,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-01-31 22:56:25,197 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:25,197 INFO L514 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:25,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-01-31 22:56:25,197 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:25,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:25,197 INFO L85 PathProgramCache]: Analyzing trace with hash 494770418, now seen corresponding path program 53 times [2022-01-31 22:56:25,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:25,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984219340] [2022-01-31 22:56:25,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:25,201 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:25,201 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:25,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:25,204 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:25,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:26,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:26,334 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 22:56:26,335 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:26,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984219340] [2022-01-31 22:56:26,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1984219340] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:26,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:26,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-01-31 22:56:26,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917305944] [2022-01-31 22:56:26,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:26,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-01-31 22:56:26,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:26,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-01-31 22:56:26,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2022-01-31 22:56:26,337 INFO L87 Difference]: Start difference. First operand 284 states and 393 transitions. Second operand has 58 states, 58 states have (on average 3.8793103448275863) internal successors, (225), 57 states have internal predecessors, (225), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:26,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:26,540 INFO L93 Difference]: Finished difference Result 300 states and 414 transitions. [2022-01-31 22:56:26,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-31 22:56:26,541 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 3.8793103448275863) internal successors, (225), 57 states have internal predecessors, (225), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 228 [2022-01-31 22:56:26,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:26,542 INFO L225 Difference]: With dead ends: 300 [2022-01-31 22:56:26,542 INFO L226 Difference]: Without dead ends: 293 [2022-01-31 22:56:26,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2022-01-31 22:56:26,543 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 915 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:26,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [915 Valid, 320 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:26,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2022-01-31 22:56:26,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 289. [2022-01-31 22:56:26,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 285 states have (on average 1.3929824561403508) internal successors, (397), 285 states have internal predecessors, (397), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:26,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 400 transitions. [2022-01-31 22:56:26,550 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 400 transitions. Word has length 228 [2022-01-31 22:56:26,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:26,551 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 400 transitions. [2022-01-31 22:56:26,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 3.8793103448275863) internal successors, (225), 57 states have internal predecessors, (225), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:26,551 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 400 transitions. [2022-01-31 22:56:26,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-01-31 22:56:26,552 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:26,552 INFO L514 BasicCegarLoop]: trace histogram [55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:26,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-01-31 22:56:26,552 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:26,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:26,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1501346745, now seen corresponding path program 54 times [2022-01-31 22:56:26,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:26,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251818418] [2022-01-31 22:56:26,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:26,568 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:26,568 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:26,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:26,571 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:27,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:27,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:27,735 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 22:56:27,736 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:27,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251818418] [2022-01-31 22:56:27,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1251818418] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:27,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:27,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2022-01-31 22:56:27,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883536913] [2022-01-31 22:56:27,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:27,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-01-31 22:56:27,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:27,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-01-31 22:56:27,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2022-01-31 22:56:27,737 INFO L87 Difference]: Start difference. First operand 289 states and 400 transitions. Second operand has 59 states, 59 states have (on average 3.8813559322033897) internal successors, (229), 58 states have internal predecessors, (229), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:27,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:27,973 INFO L93 Difference]: Finished difference Result 305 states and 421 transitions. [2022-01-31 22:56:27,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-31 22:56:27,974 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 3.8813559322033897) internal successors, (229), 58 states have internal predecessors, (229), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 232 [2022-01-31 22:56:27,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:27,975 INFO L225 Difference]: With dead ends: 305 [2022-01-31 22:56:27,975 INFO L226 Difference]: Without dead ends: 298 [2022-01-31 22:56:27,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2022-01-31 22:56:27,976 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 738 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:27,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [738 Valid, 349 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:27,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-01-31 22:56:27,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 294. [2022-01-31 22:56:27,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 290 states have (on average 1.393103448275862) internal successors, (404), 290 states have internal predecessors, (404), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:28,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 407 transitions. [2022-01-31 22:56:28,000 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 407 transitions. Word has length 232 [2022-01-31 22:56:28,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:28,000 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 407 transitions. [2022-01-31 22:56:28,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 3.8813559322033897) internal successors, (229), 58 states have internal predecessors, (229), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:28,001 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 407 transitions. [2022-01-31 22:56:28,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-01-31 22:56:28,002 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:28,002 INFO L514 BasicCegarLoop]: trace histogram [56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:28,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-01-31 22:56:28,002 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:28,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:28,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1745822464, now seen corresponding path program 55 times [2022-01-31 22:56:28,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:28,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213915237] [2022-01-31 22:56:28,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:28,006 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:28,006 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:28,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:28,009 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:29,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:29,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:29,243 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 22:56:29,243 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:29,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213915237] [2022-01-31 22:56:29,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1213915237] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:29,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:29,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2022-01-31 22:56:29,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192242292] [2022-01-31 22:56:29,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:29,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-01-31 22:56:29,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:29,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-01-31 22:56:29,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2022-01-31 22:56:29,245 INFO L87 Difference]: Start difference. First operand 294 states and 407 transitions. Second operand has 60 states, 60 states have (on average 3.8833333333333333) internal successors, (233), 59 states have internal predecessors, (233), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:29,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:29,464 INFO L93 Difference]: Finished difference Result 310 states and 428 transitions. [2022-01-31 22:56:29,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-31 22:56:29,465 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 3.8833333333333333) internal successors, (233), 59 states have internal predecessors, (233), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 236 [2022-01-31 22:56:29,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:29,466 INFO L225 Difference]: With dead ends: 310 [2022-01-31 22:56:29,466 INFO L226 Difference]: Without dead ends: 303 [2022-01-31 22:56:29,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2022-01-31 22:56:29,467 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 972 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:29,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [972 Valid, 330 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:29,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-01-31 22:56:29,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 299. [2022-01-31 22:56:29,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 295 states have (on average 1.3932203389830509) internal successors, (411), 295 states have internal predecessors, (411), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:29,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 414 transitions. [2022-01-31 22:56:29,474 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 414 transitions. Word has length 236 [2022-01-31 22:56:29,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:29,474 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 414 transitions. [2022-01-31 22:56:29,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 3.8833333333333333) internal successors, (233), 59 states have internal predecessors, (233), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:29,474 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 414 transitions. [2022-01-31 22:56:29,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-01-31 22:56:29,475 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:29,475 INFO L514 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:29,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-01-31 22:56:29,476 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:29,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:29,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1929474361, now seen corresponding path program 56 times [2022-01-31 22:56:29,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:29,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394006438] [2022-01-31 22:56:29,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:29,482 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:29,482 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:29,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:29,485 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:29,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:30,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:30,688 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 22:56:30,688 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:30,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394006438] [2022-01-31 22:56:30,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [394006438] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:30,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:30,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2022-01-31 22:56:30,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940761402] [2022-01-31 22:56:30,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:30,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-01-31 22:56:30,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:30,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-01-31 22:56:30,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2022-01-31 22:56:30,690 INFO L87 Difference]: Start difference. First operand 299 states and 414 transitions. Second operand has 61 states, 61 states have (on average 3.8852459016393444) internal successors, (237), 60 states have internal predecessors, (237), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:30,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:30,919 INFO L93 Difference]: Finished difference Result 315 states and 435 transitions. [2022-01-31 22:56:30,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-31 22:56:30,919 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.8852459016393444) internal successors, (237), 60 states have internal predecessors, (237), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 240 [2022-01-31 22:56:30,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:30,920 INFO L225 Difference]: With dead ends: 315 [2022-01-31 22:56:30,920 INFO L226 Difference]: Without dead ends: 308 [2022-01-31 22:56:30,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2022-01-31 22:56:30,921 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 711 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:30,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [711 Valid, 371 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:30,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-01-31 22:56:30,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 304. [2022-01-31 22:56:30,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 300 states have (on average 1.3933333333333333) internal successors, (418), 300 states have internal predecessors, (418), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:30,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 421 transitions. [2022-01-31 22:56:30,928 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 421 transitions. Word has length 240 [2022-01-31 22:56:30,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:30,928 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 421 transitions. [2022-01-31 22:56:30,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.8852459016393444) internal successors, (237), 60 states have internal predecessors, (237), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:30,928 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 421 transitions. [2022-01-31 22:56:30,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-01-31 22:56:30,929 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:30,930 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:30,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-01-31 22:56:30,930 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:30,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:30,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1858814194, now seen corresponding path program 57 times [2022-01-31 22:56:30,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:30,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231590798] [2022-01-31 22:56:30,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:30,940 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:30,941 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:30,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:30,944 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:30,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:32,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:32,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:32,183 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 22:56:32,183 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:32,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231590798] [2022-01-31 22:56:32,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1231590798] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:32,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:32,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-01-31 22:56:32,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376324154] [2022-01-31 22:56:32,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:32,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-01-31 22:56:32,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:32,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-01-31 22:56:32,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2022-01-31 22:56:32,193 INFO L87 Difference]: Start difference. First operand 304 states and 421 transitions. Second operand has 62 states, 62 states have (on average 3.8870967741935485) internal successors, (241), 61 states have internal predecessors, (241), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:32,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:32,445 INFO L93 Difference]: Finished difference Result 320 states and 442 transitions. [2022-01-31 22:56:32,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-31 22:56:32,445 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 3.8870967741935485) internal successors, (241), 61 states have internal predecessors, (241), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 244 [2022-01-31 22:56:32,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:32,446 INFO L225 Difference]: With dead ends: 320 [2022-01-31 22:56:32,446 INFO L226 Difference]: Without dead ends: 313 [2022-01-31 22:56:32,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2022-01-31 22:56:32,447 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 981 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:32,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [981 Valid, 340 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:32,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-01-31 22:56:32,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 309. [2022-01-31 22:56:32,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 305 states have (on average 1.3934426229508197) internal successors, (425), 305 states have internal predecessors, (425), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:32,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 428 transitions. [2022-01-31 22:56:32,454 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 428 transitions. Word has length 244 [2022-01-31 22:56:32,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:32,454 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 428 transitions. [2022-01-31 22:56:32,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 3.8870967741935485) internal successors, (241), 61 states have internal predecessors, (241), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:32,454 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 428 transitions. [2022-01-31 22:56:32,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-01-31 22:56:32,456 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:32,456 INFO L514 BasicCegarLoop]: trace histogram [59, 59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:32,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-01-31 22:56:32,456 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:32,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:32,456 INFO L85 PathProgramCache]: Analyzing trace with hash 851145685, now seen corresponding path program 58 times [2022-01-31 22:56:32,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:32,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931706301] [2022-01-31 22:56:32,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:32,464 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:32,464 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:32,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:32,468 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:32,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:33,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:33,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:33,782 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 22:56:33,782 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:33,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931706301] [2022-01-31 22:56:33,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1931706301] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:33,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:33,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2022-01-31 22:56:33,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157840932] [2022-01-31 22:56:33,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:33,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-01-31 22:56:33,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:33,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-01-31 22:56:33,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2022-01-31 22:56:33,784 INFO L87 Difference]: Start difference. First operand 309 states and 428 transitions. Second operand has 63 states, 63 states have (on average 3.888888888888889) internal successors, (245), 62 states have internal predecessors, (245), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:34,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:34,034 INFO L93 Difference]: Finished difference Result 325 states and 449 transitions. [2022-01-31 22:56:34,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-31 22:56:34,034 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 3.888888888888889) internal successors, (245), 62 states have internal predecessors, (245), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 248 [2022-01-31 22:56:34,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:34,036 INFO L225 Difference]: With dead ends: 325 [2022-01-31 22:56:34,036 INFO L226 Difference]: Without dead ends: 318 [2022-01-31 22:56:34,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2022-01-31 22:56:34,037 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 870 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:34,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [870 Valid, 369 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:34,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-01-31 22:56:34,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 314. [2022-01-31 22:56:34,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 310 states have (on average 1.3935483870967742) internal successors, (432), 310 states have internal predecessors, (432), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:34,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 435 transitions. [2022-01-31 22:56:34,044 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 435 transitions. Word has length 248 [2022-01-31 22:56:34,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:34,045 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 435 transitions. [2022-01-31 22:56:34,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 3.888888888888889) internal successors, (245), 62 states have internal predecessors, (245), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:34,045 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 435 transitions. [2022-01-31 22:56:34,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-01-31 22:56:34,046 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:34,046 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:34,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-01-31 22:56:34,046 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:34,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:34,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1799590628, now seen corresponding path program 59 times [2022-01-31 22:56:34,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:34,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654315974] [2022-01-31 22:56:34,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:34,052 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:34,052 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:34,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:34,055 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:34,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:35,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:35,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:35,493 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 22:56:35,493 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:35,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654315974] [2022-01-31 22:56:35,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1654315974] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:35,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:35,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2022-01-31 22:56:35,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187031558] [2022-01-31 22:56:35,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:35,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-31 22:56:35,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:35,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-31 22:56:35,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2022-01-31 22:56:35,495 INFO L87 Difference]: Start difference. First operand 314 states and 435 transitions. Second operand has 64 states, 64 states have (on average 3.890625) internal successors, (249), 63 states have internal predecessors, (249), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:35,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:35,819 INFO L93 Difference]: Finished difference Result 330 states and 456 transitions. [2022-01-31 22:56:35,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-31 22:56:35,820 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 3.890625) internal successors, (249), 63 states have internal predecessors, (249), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 252 [2022-01-31 22:56:35,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:35,821 INFO L225 Difference]: With dead ends: 330 [2022-01-31 22:56:35,821 INFO L226 Difference]: Without dead ends: 323 [2022-01-31 22:56:35,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2022-01-31 22:56:35,821 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 999 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:35,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [999 Valid, 350 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:35,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-01-31 22:56:35,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 319. [2022-01-31 22:56:35,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 315 states have (on average 1.3936507936507936) internal successors, (439), 315 states have internal predecessors, (439), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:35,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 442 transitions. [2022-01-31 22:56:35,829 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 442 transitions. Word has length 252 [2022-01-31 22:56:35,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:35,829 INFO L470 AbstractCegarLoop]: Abstraction has 319 states and 442 transitions. [2022-01-31 22:56:35,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 3.890625) internal successors, (249), 63 states have internal predecessors, (249), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:35,829 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 442 transitions. [2022-01-31 22:56:35,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-01-31 22:56:35,830 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:35,830 INFO L514 BasicCegarLoop]: trace histogram [61, 61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:35,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-01-31 22:56:35,831 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:35,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:35,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1350472989, now seen corresponding path program 60 times [2022-01-31 22:56:35,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:35,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282530096] [2022-01-31 22:56:35,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:35,836 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:35,836 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:35,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:35,839 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:35,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:37,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:37,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:37,266 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 22:56:37,266 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:37,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282530096] [2022-01-31 22:56:37,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1282530096] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:37,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:37,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2022-01-31 22:56:37,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750260593] [2022-01-31 22:56:37,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:37,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-01-31 22:56:37,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:37,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-01-31 22:56:37,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2022-01-31 22:56:37,268 INFO L87 Difference]: Start difference. First operand 319 states and 442 transitions. Second operand has 65 states, 65 states have (on average 3.8923076923076922) internal successors, (253), 64 states have internal predecessors, (253), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:37,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:37,556 INFO L93 Difference]: Finished difference Result 335 states and 463 transitions. [2022-01-31 22:56:37,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-31 22:56:37,556 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 3.8923076923076922) internal successors, (253), 64 states have internal predecessors, (253), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 256 [2022-01-31 22:56:37,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:37,557 INFO L225 Difference]: With dead ends: 335 [2022-01-31 22:56:37,557 INFO L226 Difference]: Without dead ends: 328 [2022-01-31 22:56:37,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2022-01-31 22:56:37,558 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 918 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:37,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [918 Valid, 403 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:37,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-01-31 22:56:37,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 324. [2022-01-31 22:56:37,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 320 states have (on average 1.39375) internal successors, (446), 320 states have internal predecessors, (446), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:37,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 449 transitions. [2022-01-31 22:56:37,566 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 449 transitions. Word has length 256 [2022-01-31 22:56:37,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:37,566 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 449 transitions. [2022-01-31 22:56:37,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 3.8923076923076922) internal successors, (253), 64 states have internal predecessors, (253), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:37,567 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 449 transitions. [2022-01-31 22:56:37,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-01-31 22:56:37,568 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:37,568 INFO L514 BasicCegarLoop]: trace histogram [62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:37,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-01-31 22:56:37,568 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:37,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:37,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1066128086, now seen corresponding path program 61 times [2022-01-31 22:56:37,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:37,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079975944] [2022-01-31 22:56:37,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:37,576 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:37,577 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:37,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:37,582 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:39,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:39,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:39,095 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 22:56:39,095 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:39,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079975944] [2022-01-31 22:56:39,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1079975944] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:39,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:39,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2022-01-31 22:56:39,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408201620] [2022-01-31 22:56:39,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:39,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-01-31 22:56:39,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:39,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-01-31 22:56:39,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2022-01-31 22:56:39,097 INFO L87 Difference]: Start difference. First operand 324 states and 449 transitions. Second operand has 66 states, 66 states have (on average 3.893939393939394) internal successors, (257), 65 states have internal predecessors, (257), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:39,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:39,378 INFO L93 Difference]: Finished difference Result 340 states and 470 transitions. [2022-01-31 22:56:39,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-31 22:56:39,378 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 3.893939393939394) internal successors, (257), 65 states have internal predecessors, (257), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 260 [2022-01-31 22:56:39,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:39,380 INFO L225 Difference]: With dead ends: 340 [2022-01-31 22:56:39,380 INFO L226 Difference]: Without dead ends: 333 [2022-01-31 22:56:39,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2022-01-31 22:56:39,380 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 804 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:39,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [804 Valid, 420 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:39,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-01-31 22:56:39,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 329. [2022-01-31 22:56:39,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 325 states have (on average 1.393846153846154) internal successors, (453), 325 states have internal predecessors, (453), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:39,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 456 transitions. [2022-01-31 22:56:39,389 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 456 transitions. Word has length 260 [2022-01-31 22:56:39,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:39,389 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 456 transitions. [2022-01-31 22:56:39,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 3.893939393939394) internal successors, (257), 65 states have internal predecessors, (257), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:39,389 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 456 transitions. [2022-01-31 22:56:39,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-01-31 22:56:39,390 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:39,391 INFO L514 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:39,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-01-31 22:56:39,391 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:39,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:39,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1172409359, now seen corresponding path program 62 times [2022-01-31 22:56:39,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:39,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307101647] [2022-01-31 22:56:39,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:39,396 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:39,396 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:39,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:39,400 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:40,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:40,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:40,880 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 22:56:40,880 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:40,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307101647] [2022-01-31 22:56:40,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [307101647] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:40,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:40,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67 [2022-01-31 22:56:40,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867670200] [2022-01-31 22:56:40,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:40,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-01-31 22:56:40,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:40,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-01-31 22:56:40,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2022-01-31 22:56:40,883 INFO L87 Difference]: Start difference. First operand 329 states and 456 transitions. Second operand has 67 states, 67 states have (on average 3.8955223880597014) internal successors, (261), 66 states have internal predecessors, (261), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:41,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:41,195 INFO L93 Difference]: Finished difference Result 345 states and 477 transitions. [2022-01-31 22:56:41,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-31 22:56:41,196 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 3.8955223880597014) internal successors, (261), 66 states have internal predecessors, (261), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 264 [2022-01-31 22:56:41,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:41,197 INFO L225 Difference]: With dead ends: 345 [2022-01-31 22:56:41,197 INFO L226 Difference]: Without dead ends: 338 [2022-01-31 22:56:41,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2022-01-31 22:56:41,198 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 750 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:41,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [750 Valid, 425 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:41,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-01-31 22:56:41,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 334. [2022-01-31 22:56:41,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 330 states have (on average 1.393939393939394) internal successors, (460), 330 states have internal predecessors, (460), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:41,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 463 transitions. [2022-01-31 22:56:41,206 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 463 transitions. Word has length 264 [2022-01-31 22:56:41,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:41,215 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 463 transitions. [2022-01-31 22:56:41,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 3.8955223880597014) internal successors, (261), 66 states have internal predecessors, (261), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:41,215 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 463 transitions. [2022-01-31 22:56:41,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-01-31 22:56:41,217 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:41,217 INFO L514 BasicCegarLoop]: trace histogram [64, 64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:41,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-01-31 22:56:41,217 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:41,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:41,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1272316104, now seen corresponding path program 63 times [2022-01-31 22:56:41,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:41,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493124600] [2022-01-31 22:56:41,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:41,224 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:41,225 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:41,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:41,228 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:41,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:42,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:42,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:42,762 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 22:56:42,762 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:42,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493124600] [2022-01-31 22:56:42,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [493124600] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:42,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:42,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2022-01-31 22:56:42,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358327745] [2022-01-31 22:56:42,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:42,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-01-31 22:56:42,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:42,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-01-31 22:56:42,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556 [2022-01-31 22:56:42,764 INFO L87 Difference]: Start difference. First operand 334 states and 463 transitions. Second operand has 68 states, 68 states have (on average 3.8970588235294117) internal successors, (265), 67 states have internal predecessors, (265), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:43,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:43,067 INFO L93 Difference]: Finished difference Result 350 states and 484 transitions. [2022-01-31 22:56:43,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-31 22:56:43,068 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 3.8970588235294117) internal successors, (265), 67 states have internal predecessors, (265), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 268 [2022-01-31 22:56:43,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:43,069 INFO L225 Difference]: With dead ends: 350 [2022-01-31 22:56:43,069 INFO L226 Difference]: Without dead ends: 343 [2022-01-31 22:56:43,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556 [2022-01-31 22:56:43,069 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 774 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:43,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [774 Valid, 442 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:43,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-01-31 22:56:43,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 339. [2022-01-31 22:56:43,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 335 states have (on average 1.3940298507462687) internal successors, (467), 335 states have internal predecessors, (467), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:43,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 470 transitions. [2022-01-31 22:56:43,077 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 470 transitions. Word has length 268 [2022-01-31 22:56:43,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:43,077 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 470 transitions. [2022-01-31 22:56:43,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 3.8970588235294117) internal successors, (265), 67 states have internal predecessors, (265), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:43,077 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 470 transitions. [2022-01-31 22:56:43,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-01-31 22:56:43,079 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:43,079 INFO L514 BasicCegarLoop]: trace histogram [65, 65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:43,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-01-31 22:56:43,079 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:43,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:43,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1533054719, now seen corresponding path program 64 times [2022-01-31 22:56:43,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:43,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561188133] [2022-01-31 22:56:43,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:43,082 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:43,082 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:43,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:43,086 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:44,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:44,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:44,624 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 22:56:44,624 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:44,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561188133] [2022-01-31 22:56:44,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [561188133] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:44,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:44,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69 [2022-01-31 22:56:44,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354427056] [2022-01-31 22:56:44,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:44,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-01-31 22:56:44,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:44,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-01-31 22:56:44,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2022-01-31 22:56:44,626 INFO L87 Difference]: Start difference. First operand 339 states and 470 transitions. Second operand has 69 states, 69 states have (on average 3.898550724637681) internal successors, (269), 68 states have internal predecessors, (269), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:44,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:44,938 INFO L93 Difference]: Finished difference Result 355 states and 491 transitions. [2022-01-31 22:56:44,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-31 22:56:44,938 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 3.898550724637681) internal successors, (269), 68 states have internal predecessors, (269), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 272 [2022-01-31 22:56:44,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:44,939 INFO L225 Difference]: With dead ends: 355 [2022-01-31 22:56:44,939 INFO L226 Difference]: Without dead ends: 348 [2022-01-31 22:56:44,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2022-01-31 22:56:44,940 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1026 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:44,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1026 Valid, 423 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:44,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-01-31 22:56:44,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 344. [2022-01-31 22:56:44,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 340 states have (on average 1.3941176470588235) internal successors, (474), 340 states have internal predecessors, (474), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:44,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 477 transitions. [2022-01-31 22:56:44,946 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 477 transitions. Word has length 272 [2022-01-31 22:56:44,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:44,946 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 477 transitions. [2022-01-31 22:56:44,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 3.898550724637681) internal successors, (269), 68 states have internal predecessors, (269), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:44,946 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 477 transitions. [2022-01-31 22:56:44,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2022-01-31 22:56:44,947 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:44,947 INFO L514 BasicCegarLoop]: trace histogram [66, 66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:44,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-01-31 22:56:44,947 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:44,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:44,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1638654790, now seen corresponding path program 65 times [2022-01-31 22:56:44,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:44,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272673137] [2022-01-31 22:56:44,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:44,957 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:44,957 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:44,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:44,961 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:45,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:46,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:46,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:46,560 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 22:56:46,560 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:46,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272673137] [2022-01-31 22:56:46,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1272673137] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:46,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:46,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2022-01-31 22:56:46,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647429096] [2022-01-31 22:56:46,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:46,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-01-31 22:56:46,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:46,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-01-31 22:56:46,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2022-01-31 22:56:46,562 INFO L87 Difference]: Start difference. First operand 344 states and 477 transitions. Second operand has 70 states, 70 states have (on average 3.9) internal successors, (273), 69 states have internal predecessors, (273), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:46,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:46,861 INFO L93 Difference]: Finished difference Result 360 states and 498 transitions. [2022-01-31 22:56:46,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-31 22:56:46,861 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 3.9) internal successors, (273), 69 states have internal predecessors, (273), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 276 [2022-01-31 22:56:46,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:46,863 INFO L225 Difference]: With dead ends: 360 [2022-01-31 22:56:46,863 INFO L226 Difference]: Without dead ends: 353 [2022-01-31 22:56:46,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2022-01-31 22:56:46,864 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 894 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:46,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [894 Valid, 440 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:46,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-01-31 22:56:46,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 349. [2022-01-31 22:56:46,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 345 states have (on average 1.3942028985507247) internal successors, (481), 345 states have internal predecessors, (481), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:46,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 484 transitions. [2022-01-31 22:56:46,878 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 484 transitions. Word has length 276 [2022-01-31 22:56:46,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:46,878 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 484 transitions. [2022-01-31 22:56:46,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 3.9) internal successors, (273), 69 states have internal predecessors, (273), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:46,878 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 484 transitions. [2022-01-31 22:56:46,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-01-31 22:56:46,879 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:46,880 INFO L514 BasicCegarLoop]: trace histogram [67, 67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:46,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-01-31 22:56:46,880 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:46,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:46,880 INFO L85 PathProgramCache]: Analyzing trace with hash -300565491, now seen corresponding path program 66 times [2022-01-31 22:56:46,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:46,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830057331] [2022-01-31 22:56:46,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:46,883 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:46,883 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:46,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:46,891 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:46,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:48,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:48,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:48,535 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 22:56:48,535 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:48,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830057331] [2022-01-31 22:56:48,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1830057331] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:48,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:48,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2022-01-31 22:56:48,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531426536] [2022-01-31 22:56:48,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:48,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-01-31 22:56:48,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:48,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-01-31 22:56:48,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2022-01-31 22:56:48,537 INFO L87 Difference]: Start difference. First operand 349 states and 484 transitions. Second operand has 71 states, 71 states have (on average 3.9014084507042255) internal successors, (277), 70 states have internal predecessors, (277), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:48,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:48,865 INFO L93 Difference]: Finished difference Result 365 states and 505 transitions. [2022-01-31 22:56:48,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-31 22:56:48,866 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 3.9014084507042255) internal successors, (277), 70 states have internal predecessors, (277), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 280 [2022-01-31 22:56:48,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:48,867 INFO L225 Difference]: With dead ends: 365 [2022-01-31 22:56:48,867 INFO L226 Difference]: Without dead ends: 358 [2022-01-31 22:56:48,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2022-01-31 22:56:48,867 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1170 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:48,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1170 Valid, 409 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:48,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-01-31 22:56:48,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 354. [2022-01-31 22:56:48,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 350 states have (on average 1.3942857142857144) internal successors, (488), 350 states have internal predecessors, (488), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:48,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 491 transitions. [2022-01-31 22:56:48,874 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 491 transitions. Word has length 280 [2022-01-31 22:56:48,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:48,875 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 491 transitions. [2022-01-31 22:56:48,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 3.9014084507042255) internal successors, (277), 70 states have internal predecessors, (277), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:48,875 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 491 transitions. [2022-01-31 22:56:48,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2022-01-31 22:56:48,876 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:48,876 INFO L514 BasicCegarLoop]: trace histogram [68, 68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:48,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-01-31 22:56:48,877 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:48,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:48,877 INFO L85 PathProgramCache]: Analyzing trace with hash 214423892, now seen corresponding path program 67 times [2022-01-31 22:56:48,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:48,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796485396] [2022-01-31 22:56:48,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:48,888 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:48,888 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:48,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:48,892 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:48,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:50,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:50,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:50,568 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 22:56:50,568 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:50,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796485396] [2022-01-31 22:56:50,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1796485396] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:50,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:50,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2022-01-31 22:56:50,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809957847] [2022-01-31 22:56:50,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:50,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-01-31 22:56:50,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:50,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-01-31 22:56:50,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2022-01-31 22:56:50,569 INFO L87 Difference]: Start difference. First operand 354 states and 491 transitions. Second operand has 72 states, 72 states have (on average 3.9027777777777777) internal successors, (281), 71 states have internal predecessors, (281), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:50,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:50,905 INFO L93 Difference]: Finished difference Result 370 states and 512 transitions. [2022-01-31 22:56:50,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-31 22:56:50,905 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 3.9027777777777777) internal successors, (281), 71 states have internal predecessors, (281), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 284 [2022-01-31 22:56:50,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:50,907 INFO L225 Difference]: With dead ends: 370 [2022-01-31 22:56:50,907 INFO L226 Difference]: Without dead ends: 363 [2022-01-31 22:56:50,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2022-01-31 22:56:50,907 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 852 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:50,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [852 Valid, 450 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:50,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-01-31 22:56:50,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 359. [2022-01-31 22:56:50,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 355 states have (on average 1.3943661971830985) internal successors, (495), 355 states have internal predecessors, (495), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:50,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 498 transitions. [2022-01-31 22:56:50,913 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 498 transitions. Word has length 284 [2022-01-31 22:56:50,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:50,913 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 498 transitions. [2022-01-31 22:56:50,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 3.9027777777777777) internal successors, (281), 71 states have internal predecessors, (281), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:50,914 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 498 transitions. [2022-01-31 22:56:50,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2022-01-31 22:56:50,915 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:50,915 INFO L514 BasicCegarLoop]: trace histogram [69, 69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:50,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-01-31 22:56:50,916 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:50,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:50,916 INFO L85 PathProgramCache]: Analyzing trace with hash 520878875, now seen corresponding path program 68 times [2022-01-31 22:56:50,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:50,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355744668] [2022-01-31 22:56:50,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:50,923 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:50,924 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:50,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:50,927 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:50,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:52,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:52,654 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 22:56:52,654 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:52,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355744668] [2022-01-31 22:56:52,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1355744668] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:52,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:52,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73 [2022-01-31 22:56:52,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022678670] [2022-01-31 22:56:52,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:52,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-01-31 22:56:52,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:52,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-01-31 22:56:52,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2022-01-31 22:56:52,656 INFO L87 Difference]: Start difference. First operand 359 states and 498 transitions. Second operand has 73 states, 73 states have (on average 3.904109589041096) internal successors, (285), 72 states have internal predecessors, (285), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:53,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:53,011 INFO L93 Difference]: Finished difference Result 375 states and 519 transitions. [2022-01-31 22:56:53,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-31 22:56:53,012 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 3.904109589041096) internal successors, (285), 72 states have internal predecessors, (285), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 288 [2022-01-31 22:56:53,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:53,013 INFO L225 Difference]: With dead ends: 375 [2022-01-31 22:56:53,013 INFO L226 Difference]: Without dead ends: 368 [2022-01-31 22:56:53,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2022-01-31 22:56:53,013 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 849 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:53,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [849 Valid, 491 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:53,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-01-31 22:56:53,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 364. [2022-01-31 22:56:53,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 360 states have (on average 1.3944444444444444) internal successors, (502), 360 states have internal predecessors, (502), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:53,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 505 transitions. [2022-01-31 22:56:53,021 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 505 transitions. Word has length 288 [2022-01-31 22:56:53,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:53,021 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 505 transitions. [2022-01-31 22:56:53,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 3.904109589041096) internal successors, (285), 72 states have internal predecessors, (285), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:53,021 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 505 transitions. [2022-01-31 22:56:53,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-01-31 22:56:53,023 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:53,023 INFO L514 BasicCegarLoop]: trace histogram [70, 70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:53,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-01-31 22:56:53,023 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:53,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:53,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1263264098, now seen corresponding path program 69 times [2022-01-31 22:56:53,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:53,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576181564] [2022-01-31 22:56:53,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:53,028 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:53,028 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:53,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:53,032 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:54,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:54,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:54,782 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 22:56:54,782 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:54,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576181564] [2022-01-31 22:56:54,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [576181564] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:54,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:54,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74 [2022-01-31 22:56:54,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156924573] [2022-01-31 22:56:54,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:54,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-01-31 22:56:54,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:54,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-01-31 22:56:54,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2630, Invalid=2772, Unknown=0, NotChecked=0, Total=5402 [2022-01-31 22:56:54,784 INFO L87 Difference]: Start difference. First operand 364 states and 505 transitions. Second operand has 74 states, 74 states have (on average 3.9054054054054053) internal successors, (289), 73 states have internal predecessors, (289), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:55,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:55,160 INFO L93 Difference]: Finished difference Result 380 states and 526 transitions. [2022-01-31 22:56:55,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-31 22:56:55,160 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 3.9054054054054053) internal successors, (289), 73 states have internal predecessors, (289), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 292 [2022-01-31 22:56:55,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:55,162 INFO L225 Difference]: With dead ends: 380 [2022-01-31 22:56:55,162 INFO L226 Difference]: Without dead ends: 373 [2022-01-31 22:56:55,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2630, Invalid=2772, Unknown=0, NotChecked=0, Total=5402 [2022-01-31 22:56:55,163 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1014 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:55,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1014 Valid, 436 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:55,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-01-31 22:56:55,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 369. [2022-01-31 22:56:55,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 365 states have (on average 1.3945205479452054) internal successors, (509), 365 states have internal predecessors, (509), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:55,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 512 transitions. [2022-01-31 22:56:55,179 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 512 transitions. Word has length 292 [2022-01-31 22:56:55,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:55,179 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 512 transitions. [2022-01-31 22:56:55,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 3.9054054054054053) internal successors, (289), 73 states have internal predecessors, (289), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:55,180 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 512 transitions. [2022-01-31 22:56:55,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2022-01-31 22:56:55,181 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:55,181 INFO L514 BasicCegarLoop]: trace histogram [71, 71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:55,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-01-31 22:56:55,182 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:55,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:55,182 INFO L85 PathProgramCache]: Analyzing trace with hash -317633495, now seen corresponding path program 70 times [2022-01-31 22:56:55,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:55,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136201584] [2022-01-31 22:56:55,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:55,185 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:55,185 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:55,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:55,188 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:55,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:56,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:56,969 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 22:56:56,969 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:56,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136201584] [2022-01-31 22:56:56,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [136201584] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:56,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:56,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75 [2022-01-31 22:56:56,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020039759] [2022-01-31 22:56:56,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:56,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-01-31 22:56:56,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:56,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-01-31 22:56:56,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2022-01-31 22:56:56,971 INFO L87 Difference]: Start difference. First operand 369 states and 512 transitions. Second operand has 75 states, 75 states have (on average 3.9066666666666667) internal successors, (293), 74 states have internal predecessors, (293), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:57,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:57,363 INFO L93 Difference]: Finished difference Result 385 states and 533 transitions. [2022-01-31 22:56:57,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-01-31 22:56:57,364 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 3.9066666666666667) internal successors, (293), 74 states have internal predecessors, (293), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 296 [2022-01-31 22:56:57,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:57,365 INFO L225 Difference]: With dead ends: 385 [2022-01-31 22:56:57,365 INFO L226 Difference]: Without dead ends: 378 [2022-01-31 22:56:57,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2022-01-31 22:56:57,365 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1020 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:57,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1020 Valid, 429 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:57,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-01-31 22:56:57,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 374. [2022-01-31 22:56:57,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 370 states have (on average 1.3945945945945946) internal successors, (516), 370 states have internal predecessors, (516), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:57,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 519 transitions. [2022-01-31 22:56:57,371 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 519 transitions. Word has length 296 [2022-01-31 22:56:57,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:57,372 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 519 transitions. [2022-01-31 22:56:57,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 3.9066666666666667) internal successors, (293), 74 states have internal predecessors, (293), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:57,372 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 519 transitions. [2022-01-31 22:56:57,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-01-31 22:56:57,373 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:57,373 INFO L514 BasicCegarLoop]: trace histogram [72, 72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:57,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-01-31 22:56:57,374 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:57,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:57,374 INFO L85 PathProgramCache]: Analyzing trace with hash 84278128, now seen corresponding path program 71 times [2022-01-31 22:56:57,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:57,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473511245] [2022-01-31 22:56:57,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:57,382 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:57,382 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:57,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:57,386 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:59,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:59,212 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 22:56:59,212 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:59,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473511245] [2022-01-31 22:56:59,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1473511245] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:59,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:59,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76 [2022-01-31 22:56:59,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41021319] [2022-01-31 22:56:59,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:59,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-01-31 22:56:59,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:59,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-01-31 22:56:59,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2022-01-31 22:56:59,214 INFO L87 Difference]: Start difference. First operand 374 states and 519 transitions. Second operand has 76 states, 76 states have (on average 3.9078947368421053) internal successors, (297), 75 states have internal predecessors, (297), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:59,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:59,661 INFO L93 Difference]: Finished difference Result 390 states and 540 transitions. [2022-01-31 22:56:59,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-31 22:56:59,661 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 3.9078947368421053) internal successors, (297), 75 states have internal predecessors, (297), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 300 [2022-01-31 22:56:59,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:59,662 INFO L225 Difference]: With dead ends: 390 [2022-01-31 22:56:59,662 INFO L226 Difference]: Without dead ends: 383 [2022-01-31 22:56:59,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2022-01-31 22:56:59,663 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 924 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:59,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [924 Valid, 494 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:59,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-01-31 22:56:59,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 379. [2022-01-31 22:56:59,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 375 states have (on average 1.3946666666666667) internal successors, (523), 375 states have internal predecessors, (523), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:59,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 526 transitions. [2022-01-31 22:56:59,670 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 526 transitions. Word has length 300 [2022-01-31 22:56:59,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:59,670 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 526 transitions. [2022-01-31 22:56:59,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 3.9078947368421053) internal successors, (297), 75 states have internal predecessors, (297), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:59,671 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 526 transitions. [2022-01-31 22:56:59,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2022-01-31 22:56:59,672 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:59,672 INFO L514 BasicCegarLoop]: trace histogram [73, 73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:59,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-01-31 22:56:59,673 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:59,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:59,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1460424905, now seen corresponding path program 72 times [2022-01-31 22:56:59,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:59,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435496827] [2022-01-31 22:56:59,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:59,675 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:59,675 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:59,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:59,679 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:01,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:01,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:01,644 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 22:57:01,645 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:01,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435496827] [2022-01-31 22:57:01,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1435496827] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:01,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:01,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77 [2022-01-31 22:57:01,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219856282] [2022-01-31 22:57:01,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:01,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-01-31 22:57:01,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:01,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-01-31 22:57:01,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2852, Invalid=3000, Unknown=0, NotChecked=0, Total=5852 [2022-01-31 22:57:01,646 INFO L87 Difference]: Start difference. First operand 379 states and 526 transitions. Second operand has 77 states, 77 states have (on average 3.909090909090909) internal successors, (301), 76 states have internal predecessors, (301), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:02,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:02,055 INFO L93 Difference]: Finished difference Result 395 states and 547 transitions. [2022-01-31 22:57:02,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-31 22:57:02,055 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 3.909090909090909) internal successors, (301), 76 states have internal predecessors, (301), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 304 [2022-01-31 22:57:02,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:02,056 INFO L225 Difference]: With dead ends: 395 [2022-01-31 22:57:02,056 INFO L226 Difference]: Without dead ends: 388 [2022-01-31 22:57:02,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2852, Invalid=3000, Unknown=0, NotChecked=0, Total=5852 [2022-01-31 22:57:02,057 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 960 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:02,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [960 Valid, 463 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:57:02,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2022-01-31 22:57:02,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 384. [2022-01-31 22:57:02,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 380 states have (on average 1.394736842105263) internal successors, (530), 380 states have internal predecessors, (530), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:02,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 533 transitions. [2022-01-31 22:57:02,064 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 533 transitions. Word has length 304 [2022-01-31 22:57:02,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:02,064 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 533 transitions. [2022-01-31 22:57:02,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 3.909090909090909) internal successors, (301), 76 states have internal predecessors, (301), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:02,064 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 533 transitions. [2022-01-31 22:57:02,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2022-01-31 22:57:02,065 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:02,065 INFO L514 BasicCegarLoop]: trace histogram [74, 74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:02,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-01-31 22:57:02,065 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:02,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:02,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1942235006, now seen corresponding path program 73 times [2022-01-31 22:57:02,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:02,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542694356] [2022-01-31 22:57:02,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:02,072 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:02,072 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:02,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:02,075 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:03,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:03,985 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 22:57:03,985 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:03,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542694356] [2022-01-31 22:57:03,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [542694356] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:03,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:03,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78 [2022-01-31 22:57:03,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042602296] [2022-01-31 22:57:03,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:03,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-01-31 22:57:03,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:03,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-01-31 22:57:03,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006 [2022-01-31 22:57:03,987 INFO L87 Difference]: Start difference. First operand 384 states and 533 transitions. Second operand has 78 states, 78 states have (on average 3.91025641025641) internal successors, (305), 77 states have internal predecessors, (305), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:04,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:04,479 INFO L93 Difference]: Finished difference Result 400 states and 554 transitions. [2022-01-31 22:57:04,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-01-31 22:57:04,480 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 3.91025641025641) internal successors, (305), 77 states have internal predecessors, (305), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 308 [2022-01-31 22:57:04,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:04,481 INFO L225 Difference]: With dead ends: 400 [2022-01-31 22:57:04,481 INFO L226 Difference]: Without dead ends: 393 [2022-01-31 22:57:04,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006 [2022-01-31 22:57:04,481 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 831 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:04,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [831 Valid, 504 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:57:04,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-01-31 22:57:04,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 389. [2022-01-31 22:57:04,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 385 states have (on average 1.3948051948051947) internal successors, (537), 385 states have internal predecessors, (537), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:04,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 540 transitions. [2022-01-31 22:57:04,487 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 540 transitions. Word has length 308 [2022-01-31 22:57:04,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:04,487 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 540 transitions. [2022-01-31 22:57:04,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 3.91025641025641) internal successors, (305), 77 states have internal predecessors, (305), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:04,487 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 540 transitions. [2022-01-31 22:57:04,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2022-01-31 22:57:04,488 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:04,489 INFO L514 BasicCegarLoop]: trace histogram [75, 75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:04,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-01-31 22:57:04,489 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:04,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:04,489 INFO L85 PathProgramCache]: Analyzing trace with hash -176085947, now seen corresponding path program 74 times [2022-01-31 22:57:04,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:04,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693799916] [2022-01-31 22:57:04,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:04,494 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:04,494 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:04,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:04,497 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:04,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:06,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:06,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:06,462 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 22:57:06,462 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:06,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693799916] [2022-01-31 22:57:06,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [693799916] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:06,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:06,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [79] imperfect sequences [] total 79 [2022-01-31 22:57:06,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821625927] [2022-01-31 22:57:06,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:06,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-01-31 22:57:06,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:06,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-01-31 22:57:06,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2022-01-31 22:57:06,464 INFO L87 Difference]: Start difference. First operand 389 states and 540 transitions. Second operand has 79 states, 79 states have (on average 3.911392405063291) internal successors, (309), 78 states have internal predecessors, (309), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:06,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:06,855 INFO L93 Difference]: Finished difference Result 405 states and 561 transitions. [2022-01-31 22:57:06,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-01-31 22:57:06,856 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 3.911392405063291) internal successors, (309), 78 states have internal predecessors, (309), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 312 [2022-01-31 22:57:06,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:06,857 INFO L225 Difference]: With dead ends: 405 [2022-01-31 22:57:06,857 INFO L226 Difference]: Without dead ends: 398 [2022-01-31 22:57:06,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2022-01-31 22:57:06,858 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1173 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:06,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1173 Valid, 449 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:57:06,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-01-31 22:57:06,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 394. [2022-01-31 22:57:06,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 390 states have (on average 1.3948717948717948) internal successors, (544), 390 states have internal predecessors, (544), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:06,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 547 transitions. [2022-01-31 22:57:06,880 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 547 transitions. Word has length 312 [2022-01-31 22:57:06,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:06,881 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 547 transitions. [2022-01-31 22:57:06,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 3.911392405063291) internal successors, (309), 78 states have internal predecessors, (309), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:06,881 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 547 transitions. [2022-01-31 22:57:06,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-01-31 22:57:06,882 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:06,882 INFO L514 BasicCegarLoop]: trace histogram [76, 76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:06,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-01-31 22:57:06,883 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:06,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:06,883 INFO L85 PathProgramCache]: Analyzing trace with hash 592733580, now seen corresponding path program 75 times [2022-01-31 22:57:06,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:06,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757063638] [2022-01-31 22:57:06,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:06,886 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:06,886 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:06,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:06,890 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:08,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:08,935 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 22:57:08,935 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:08,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757063638] [2022-01-31 22:57:08,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1757063638] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:08,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:08,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80 [2022-01-31 22:57:08,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68511015] [2022-01-31 22:57:08,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:08,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-01-31 22:57:08,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:08,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-01-31 22:57:08,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3083, Invalid=3237, Unknown=0, NotChecked=0, Total=6320 [2022-01-31 22:57:08,937 INFO L87 Difference]: Start difference. First operand 394 states and 547 transitions. Second operand has 80 states, 80 states have (on average 3.9125) internal successors, (313), 79 states have internal predecessors, (313), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:09,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:09,424 INFO L93 Difference]: Finished difference Result 410 states and 568 transitions. [2022-01-31 22:57:09,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-31 22:57:09,424 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 3.9125) internal successors, (313), 79 states have internal predecessors, (313), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 316 [2022-01-31 22:57:09,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:09,425 INFO L225 Difference]: With dead ends: 410 [2022-01-31 22:57:09,426 INFO L226 Difference]: Without dead ends: 403 [2022-01-31 22:57:09,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3083, Invalid=3237, Unknown=0, NotChecked=0, Total=6320 [2022-01-31 22:57:09,426 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1002 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:09,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1002 Valid, 502 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:57:09,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-01-31 22:57:09,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 399. [2022-01-31 22:57:09,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 395 states have (on average 1.3949367088607596) internal successors, (551), 395 states have internal predecessors, (551), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:09,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 554 transitions. [2022-01-31 22:57:09,441 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 554 transitions. Word has length 316 [2022-01-31 22:57:09,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:09,441 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 554 transitions. [2022-01-31 22:57:09,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 3.9125) internal successors, (313), 79 states have internal predecessors, (313), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:09,441 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 554 transitions. [2022-01-31 22:57:09,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-01-31 22:57:09,443 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:09,443 INFO L514 BasicCegarLoop]: trace histogram [77, 77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:09,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-01-31 22:57:09,443 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:09,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:09,443 INFO L85 PathProgramCache]: Analyzing trace with hash -947410093, now seen corresponding path program 76 times [2022-01-31 22:57:09,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:09,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800173952] [2022-01-31 22:57:09,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:09,445 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:09,445 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:09,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:09,449 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:11,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:11,510 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 22:57:11,510 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:11,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800173952] [2022-01-31 22:57:11,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [800173952] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:11,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:11,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [81] imperfect sequences [] total 81 [2022-01-31 22:57:11,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454257198] [2022-01-31 22:57:11,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:11,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-01-31 22:57:11,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:11,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-01-31 22:57:11,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480 [2022-01-31 22:57:11,512 INFO L87 Difference]: Start difference. First operand 399 states and 554 transitions. Second operand has 81 states, 81 states have (on average 3.9135802469135803) internal successors, (317), 80 states have internal predecessors, (317), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:11,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:11,984 INFO L93 Difference]: Finished difference Result 415 states and 575 transitions. [2022-01-31 22:57:11,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-31 22:57:11,985 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 3.9135802469135803) internal successors, (317), 80 states have internal predecessors, (317), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 320 [2022-01-31 22:57:11,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:11,986 INFO L225 Difference]: With dead ends: 415 [2022-01-31 22:57:11,986 INFO L226 Difference]: Without dead ends: 408 [2022-01-31 22:57:11,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480 [2022-01-31 22:57:11,987 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1173 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:11,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1173 Valid, 507 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:57:11,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-01-31 22:57:11,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 404. [2022-01-31 22:57:11,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 400 states have (on average 1.395) internal successors, (558), 400 states have internal predecessors, (558), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:11,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 561 transitions. [2022-01-31 22:57:11,993 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 561 transitions. Word has length 320 [2022-01-31 22:57:11,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:11,993 INFO L470 AbstractCegarLoop]: Abstraction has 404 states and 561 transitions. [2022-01-31 22:57:11,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 3.9135802469135803) internal successors, (317), 80 states have internal predecessors, (317), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:11,994 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 561 transitions. [2022-01-31 22:57:11,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-01-31 22:57:11,995 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:11,995 INFO L514 BasicCegarLoop]: trace histogram [78, 78, 78, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:11,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-01-31 22:57:11,996 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:11,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:11,996 INFO L85 PathProgramCache]: Analyzing trace with hash -242960998, now seen corresponding path program 77 times [2022-01-31 22:57:11,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:11,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174211521] [2022-01-31 22:57:11,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:12,004 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:12,005 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:12,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:12,013 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:14,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:14,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:14,132 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 22:57:14,133 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:14,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174211521] [2022-01-31 22:57:14,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1174211521] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:14,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:14,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [82] imperfect sequences [] total 82 [2022-01-31 22:57:14,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820942913] [2022-01-31 22:57:14,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:14,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-01-31 22:57:14,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:14,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-01-31 22:57:14,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642 [2022-01-31 22:57:14,135 INFO L87 Difference]: Start difference. First operand 404 states and 561 transitions. Second operand has 82 states, 82 states have (on average 3.9146341463414633) internal successors, (321), 81 states have internal predecessors, (321), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:14,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:14,600 INFO L93 Difference]: Finished difference Result 420 states and 582 transitions. [2022-01-31 22:57:14,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-01-31 22:57:14,600 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 3.9146341463414633) internal successors, (321), 81 states have internal predecessors, (321), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 324 [2022-01-31 22:57:14,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:14,602 INFO L225 Difference]: With dead ends: 420 [2022-01-31 22:57:14,602 INFO L226 Difference]: Without dead ends: 413 [2022-01-31 22:57:14,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642 [2022-01-31 22:57:14,603 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 948 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:14,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [948 Valid, 512 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:57:14,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-01-31 22:57:14,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 409. [2022-01-31 22:57:14,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 405 states have (on average 1.3950617283950617) internal successors, (565), 405 states have internal predecessors, (565), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:14,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 568 transitions. [2022-01-31 22:57:14,611 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 568 transitions. Word has length 324 [2022-01-31 22:57:14,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:14,612 INFO L470 AbstractCegarLoop]: Abstraction has 409 states and 568 transitions. [2022-01-31 22:57:14,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 3.9146341463414633) internal successors, (321), 81 states have internal predecessors, (321), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:14,612 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 568 transitions. [2022-01-31 22:57:14,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2022-01-31 22:57:14,614 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:14,614 INFO L514 BasicCegarLoop]: trace histogram [79, 79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:14,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-01-31 22:57:14,614 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:14,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:14,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1708475489, now seen corresponding path program 78 times [2022-01-31 22:57:14,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:14,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019950147] [2022-01-31 22:57:14,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:14,624 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:14,624 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:14,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:14,629 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:16,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:16,880 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 22:57:16,881 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:16,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019950147] [2022-01-31 22:57:16,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1019950147] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:16,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:16,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [83] imperfect sequences [] total 83 [2022-01-31 22:57:16,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854282866] [2022-01-31 22:57:16,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:16,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-01-31 22:57:16,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:16,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-01-31 22:57:16,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806 [2022-01-31 22:57:16,884 INFO L87 Difference]: Start difference. First operand 409 states and 568 transitions. Second operand has 83 states, 83 states have (on average 3.9156626506024095) internal successors, (325), 82 states have internal predecessors, (325), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:17,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:17,437 INFO L93 Difference]: Finished difference Result 425 states and 589 transitions. [2022-01-31 22:57:17,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-01-31 22:57:17,437 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 3.9156626506024095) internal successors, (325), 82 states have internal predecessors, (325), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 328 [2022-01-31 22:57:17,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:17,439 INFO L225 Difference]: With dead ends: 425 [2022-01-31 22:57:17,439 INFO L226 Difference]: Without dead ends: 418 [2022-01-31 22:57:17,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806 [2022-01-31 22:57:17,439 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1257 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:17,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1257 Valid, 457 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:57:17,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-01-31 22:57:17,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 414. [2022-01-31 22:57:17,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 410 states have (on average 1.395121951219512) internal successors, (572), 410 states have internal predecessors, (572), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:17,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 575 transitions. [2022-01-31 22:57:17,445 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 575 transitions. Word has length 328 [2022-01-31 22:57:17,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:17,445 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 575 transitions. [2022-01-31 22:57:17,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 3.9156626506024095) internal successors, (325), 82 states have internal predecessors, (325), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:17,445 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 575 transitions. [2022-01-31 22:57:17,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2022-01-31 22:57:17,447 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:17,447 INFO L514 BasicCegarLoop]: trace histogram [80, 80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:17,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-01-31 22:57:17,447 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:17,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:17,447 INFO L85 PathProgramCache]: Analyzing trace with hash 237180840, now seen corresponding path program 79 times [2022-01-31 22:57:17,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:17,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711279127] [2022-01-31 22:57:17,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:17,450 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:17,450 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:17,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:17,454 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:19,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:19,662 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 22:57:19,663 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:19,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711279127] [2022-01-31 22:57:19,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [711279127] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:19,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:19,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84 [2022-01-31 22:57:19,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841663877] [2022-01-31 22:57:19,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:19,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-01-31 22:57:19,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:19,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-01-31 22:57:19,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3405, Invalid=3567, Unknown=0, NotChecked=0, Total=6972 [2022-01-31 22:57:19,664 INFO L87 Difference]: Start difference. First operand 414 states and 575 transitions. Second operand has 84 states, 84 states have (on average 3.9166666666666665) internal successors, (329), 83 states have internal predecessors, (329), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:20,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:20,203 INFO L93 Difference]: Finished difference Result 430 states and 596 transitions. [2022-01-31 22:57:20,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-31 22:57:20,203 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 3.9166666666666665) internal successors, (329), 83 states have internal predecessors, (329), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 332 [2022-01-31 22:57:20,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:20,205 INFO L225 Difference]: With dead ends: 430 [2022-01-31 22:57:20,205 INFO L226 Difference]: Without dead ends: 423 [2022-01-31 22:57:20,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3405, Invalid=3567, Unknown=0, NotChecked=0, Total=6972 [2022-01-31 22:57:20,205 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1134 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:20,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1134 Valid, 522 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:57:20,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-01-31 22:57:20,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 419. [2022-01-31 22:57:20,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 415 states have (on average 1.3951807228915662) internal successors, (579), 415 states have internal predecessors, (579), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:20,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 582 transitions. [2022-01-31 22:57:20,212 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 582 transitions. Word has length 332 [2022-01-31 22:57:20,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:20,212 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 582 transitions. [2022-01-31 22:57:20,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 3.9166666666666665) internal successors, (329), 83 states have internal predecessors, (329), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:20,212 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 582 transitions. [2022-01-31 22:57:20,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2022-01-31 22:57:20,214 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:20,214 INFO L514 BasicCegarLoop]: trace histogram [81, 81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:20,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-01-31 22:57:20,214 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:20,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:20,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1765273455, now seen corresponding path program 80 times [2022-01-31 22:57:20,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:20,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310980171] [2022-01-31 22:57:20,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:20,220 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:20,221 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:20,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:20,224 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:22,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:22,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:22,499 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 22:57:22,499 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:22,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310980171] [2022-01-31 22:57:22,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1310980171] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:22,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:22,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [] total 85 [2022-01-31 22:57:22,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604280434] [2022-01-31 22:57:22,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:22,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2022-01-31 22:57:22,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:22,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2022-01-31 22:57:22,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2022-01-31 22:57:22,502 INFO L87 Difference]: Start difference. First operand 419 states and 582 transitions. Second operand has 85 states, 85 states have (on average 3.9176470588235293) internal successors, (333), 84 states have internal predecessors, (333), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:23,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:23,065 INFO L93 Difference]: Finished difference Result 435 states and 603 transitions. [2022-01-31 22:57:23,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-01-31 22:57:23,065 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 3.9176470588235293) internal successors, (333), 84 states have internal predecessors, (333), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 336 [2022-01-31 22:57:23,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:23,066 INFO L225 Difference]: With dead ends: 435 [2022-01-31 22:57:23,066 INFO L226 Difference]: Without dead ends: 428 [2022-01-31 22:57:23,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2022-01-31 22:57:23,067 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1092 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:23,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1092 Valid, 491 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:57:23,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-01-31 22:57:23,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 424. [2022-01-31 22:57:23,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 420 states have (on average 1.3952380952380952) internal successors, (586), 420 states have internal predecessors, (586), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:23,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 589 transitions. [2022-01-31 22:57:23,076 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 589 transitions. Word has length 336 [2022-01-31 22:57:23,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:23,076 INFO L470 AbstractCegarLoop]: Abstraction has 424 states and 589 transitions. [2022-01-31 22:57:23,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 3.9176470588235293) internal successors, (333), 84 states have internal predecessors, (333), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:23,076 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 589 transitions. [2022-01-31 22:57:23,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2022-01-31 22:57:23,078 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:23,078 INFO L514 BasicCegarLoop]: trace histogram [82, 82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:23,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-01-31 22:57:23,078 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:23,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:23,079 INFO L85 PathProgramCache]: Analyzing trace with hash -84046922, now seen corresponding path program 81 times [2022-01-31 22:57:23,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:23,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649080810] [2022-01-31 22:57:23,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:23,082 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:23,082 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:23,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:23,086 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:23,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:25,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:25,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:25,383 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 22:57:25,383 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:25,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649080810] [2022-01-31 22:57:25,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1649080810] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:25,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:25,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [86] imperfect sequences [] total 86 [2022-01-31 22:57:25,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910951666] [2022-01-31 22:57:25,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:25,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-01-31 22:57:25,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:25,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-01-31 22:57:25,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3572, Invalid=3738, Unknown=0, NotChecked=0, Total=7310 [2022-01-31 22:57:25,386 INFO L87 Difference]: Start difference. First operand 424 states and 589 transitions. Second operand has 86 states, 86 states have (on average 3.9186046511627906) internal successors, (337), 85 states have internal predecessors, (337), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:25,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:25,910 INFO L93 Difference]: Finished difference Result 440 states and 610 transitions. [2022-01-31 22:57:25,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-01-31 22:57:25,911 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 3.9186046511627906) internal successors, (337), 85 states have internal predecessors, (337), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 340 [2022-01-31 22:57:25,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:25,912 INFO L225 Difference]: With dead ends: 440 [2022-01-31 22:57:25,912 INFO L226 Difference]: Without dead ends: 433 [2022-01-31 22:57:25,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3572, Invalid=3738, Unknown=0, NotChecked=0, Total=7310 [2022-01-31 22:57:25,913 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1077 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:25,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1077 Valid, 532 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:57:25,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-01-31 22:57:25,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 429. [2022-01-31 22:57:25,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 425 states have (on average 1.3952941176470588) internal successors, (593), 425 states have internal predecessors, (593), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:25,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 596 transitions. [2022-01-31 22:57:25,918 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 596 transitions. Word has length 340 [2022-01-31 22:57:25,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:25,919 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 596 transitions. [2022-01-31 22:57:25,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 3.9186046511627906) internal successors, (337), 85 states have internal predecessors, (337), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:25,919 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 596 transitions. [2022-01-31 22:57:25,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-01-31 22:57:25,920 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:25,920 INFO L514 BasicCegarLoop]: trace histogram [83, 83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:25,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-01-31 22:57:25,921 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:25,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:25,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1132614531, now seen corresponding path program 82 times [2022-01-31 22:57:25,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:25,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487763005] [2022-01-31 22:57:25,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:25,929 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:25,929 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:25,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:25,937 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:25,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:28,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:28,304 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 22:57:28,304 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:28,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487763005] [2022-01-31 22:57:28,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [487763005] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:28,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:28,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [87] imperfect sequences [] total 87 [2022-01-31 22:57:28,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570570695] [2022-01-31 22:57:28,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:28,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-01-31 22:57:28,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:28,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-01-31 22:57:28,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2022-01-31 22:57:28,306 INFO L87 Difference]: Start difference. First operand 429 states and 596 transitions. Second operand has 87 states, 87 states have (on average 3.9195402298850577) internal successors, (341), 86 states have internal predecessors, (341), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:28,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:28,885 INFO L93 Difference]: Finished difference Result 445 states and 617 transitions. [2022-01-31 22:57:28,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-01-31 22:57:28,885 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 3.9195402298850577) internal successors, (341), 86 states have internal predecessors, (341), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 344 [2022-01-31 22:57:28,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:28,886 INFO L225 Difference]: With dead ends: 445 [2022-01-31 22:57:28,886 INFO L226 Difference]: Without dead ends: 438 [2022-01-31 22:57:28,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2022-01-31 22:57:28,887 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1164 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:28,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1164 Valid, 537 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:57:28,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-01-31 22:57:28,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 434. [2022-01-31 22:57:28,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 430 states have (on average 1.3953488372093024) internal successors, (600), 430 states have internal predecessors, (600), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:28,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 603 transitions. [2022-01-31 22:57:28,894 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 603 transitions. Word has length 344 [2022-01-31 22:57:28,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:28,894 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 603 transitions. [2022-01-31 22:57:28,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 3.9195402298850577) internal successors, (341), 86 states have internal predecessors, (341), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:28,895 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 603 transitions. [2022-01-31 22:57:28,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2022-01-31 22:57:28,896 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:28,896 INFO L514 BasicCegarLoop]: trace histogram [84, 84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:28,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-01-31 22:57:28,897 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:28,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:28,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1948118588, now seen corresponding path program 83 times [2022-01-31 22:57:28,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:28,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90839846] [2022-01-31 22:57:28,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:28,904 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:28,905 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:28,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:28,916 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:28,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:31,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:31,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:31,373 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 22:57:31,373 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:31,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90839846] [2022-01-31 22:57:31,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [90839846] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:31,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:31,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [88] imperfect sequences [] total 88 [2022-01-31 22:57:31,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688376209] [2022-01-31 22:57:31,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:31,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-01-31 22:57:31,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:31,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-01-31 22:57:31,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656 [2022-01-31 22:57:31,376 INFO L87 Difference]: Start difference. First operand 434 states and 603 transitions. Second operand has 88 states, 88 states have (on average 3.9204545454545454) internal successors, (345), 87 states have internal predecessors, (345), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:32,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:32,004 INFO L93 Difference]: Finished difference Result 450 states and 624 transitions. [2022-01-31 22:57:32,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-31 22:57:32,005 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 3.9204545454545454) internal successors, (345), 87 states have internal predecessors, (345), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 348 [2022-01-31 22:57:32,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:32,006 INFO L225 Difference]: With dead ends: 450 [2022-01-31 22:57:32,006 INFO L226 Difference]: Without dead ends: 443 [2022-01-31 22:57:32,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656 [2022-01-31 22:57:32,007 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1149 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:32,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1149 Valid, 518 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:57:32,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-01-31 22:57:32,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 439. [2022-01-31 22:57:32,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 435 states have (on average 1.3954022988505748) internal successors, (607), 435 states have internal predecessors, (607), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:32,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 610 transitions. [2022-01-31 22:57:32,014 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 610 transitions. Word has length 348 [2022-01-31 22:57:32,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:32,015 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 610 transitions. [2022-01-31 22:57:32,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 3.9204545454545454) internal successors, (345), 87 states have internal predecessors, (345), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:32,015 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 610 transitions. [2022-01-31 22:57:32,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-01-31 22:57:32,016 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:32,017 INFO L514 BasicCegarLoop]: trace histogram [85, 85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:32,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-01-31 22:57:32,017 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:32,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:32,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1670087797, now seen corresponding path program 84 times [2022-01-31 22:57:32,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:32,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830324081] [2022-01-31 22:57:32,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:32,019 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:32,019 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:32,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:32,023 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:32,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:34,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:34,581 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 22:57:34,581 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:34,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830324081] [2022-01-31 22:57:34,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [830324081] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:34,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:34,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [89] imperfect sequences [] total 89 [2022-01-31 22:57:34,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841425925] [2022-01-31 22:57:34,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:34,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-01-31 22:57:34,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:34,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-01-31 22:57:34,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3830, Invalid=4002, Unknown=0, NotChecked=0, Total=7832 [2022-01-31 22:57:34,584 INFO L87 Difference]: Start difference. First operand 439 states and 610 transitions. Second operand has 89 states, 89 states have (on average 3.9213483146067416) internal successors, (349), 88 states have internal predecessors, (349), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:35,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:35,240 INFO L93 Difference]: Finished difference Result 455 states and 631 transitions. [2022-01-31 22:57:35,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-01-31 22:57:35,241 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 3.9213483146067416) internal successors, (349), 88 states have internal predecessors, (349), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 352 [2022-01-31 22:57:35,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:35,242 INFO L225 Difference]: With dead ends: 455 [2022-01-31 22:57:35,242 INFO L226 Difference]: Without dead ends: 448 [2022-01-31 22:57:35,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3830, Invalid=4002, Unknown=0, NotChecked=0, Total=7832 [2022-01-31 22:57:35,243 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1545 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:35,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1545 Valid, 475 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:57:35,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-01-31 22:57:35,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 444. [2022-01-31 22:57:35,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 440 states have (on average 1.3954545454545455) internal successors, (614), 440 states have internal predecessors, (614), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:35,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 617 transitions. [2022-01-31 22:57:35,252 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 617 transitions. Word has length 352 [2022-01-31 22:57:35,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:35,252 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 617 transitions. [2022-01-31 22:57:35,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 3.9213483146067416) internal successors, (349), 88 states have internal predecessors, (349), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:35,253 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 617 transitions. [2022-01-31 22:57:35,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2022-01-31 22:57:35,254 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:35,254 INFO L514 BasicCegarLoop]: trace histogram [86, 86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:35,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-01-31 22:57:35,255 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:35,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:35,255 INFO L85 PathProgramCache]: Analyzing trace with hash -425809454, now seen corresponding path program 85 times [2022-01-31 22:57:35,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:35,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969370464] [2022-01-31 22:57:35,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:35,258 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:35,258 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:35,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:35,262 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:37,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:37,904 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 22:57:37,904 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:37,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969370464] [2022-01-31 22:57:37,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [969370464] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:37,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:37,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [90] imperfect sequences [] total 90 [2022-01-31 22:57:37,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390603510] [2022-01-31 22:57:37,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:37,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-01-31 22:57:37,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:37,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-01-31 22:57:37,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3918, Invalid=4092, Unknown=0, NotChecked=0, Total=8010 [2022-01-31 22:57:37,906 INFO L87 Difference]: Start difference. First operand 444 states and 617 transitions. Second operand has 90 states, 90 states have (on average 3.922222222222222) internal successors, (353), 89 states have internal predecessors, (353), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:38,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:38,603 INFO L93 Difference]: Finished difference Result 460 states and 638 transitions. [2022-01-31 22:57:38,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-01-31 22:57:38,604 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 3.922222222222222) internal successors, (353), 89 states have internal predecessors, (353), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 356 [2022-01-31 22:57:38,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:38,605 INFO L225 Difference]: With dead ends: 460 [2022-01-31 22:57:38,605 INFO L226 Difference]: Without dead ends: 453 [2022-01-31 22:57:38,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3918, Invalid=4092, Unknown=0, NotChecked=0, Total=8010 [2022-01-31 22:57:38,606 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1209 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1209 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:38,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1209 Valid, 540 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:57:38,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-01-31 22:57:38,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 449. [2022-01-31 22:57:38,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 445 states have (on average 1.395505617977528) internal successors, (621), 445 states have internal predecessors, (621), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:38,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 624 transitions. [2022-01-31 22:57:38,611 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 624 transitions. Word has length 356 [2022-01-31 22:57:38,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:38,612 INFO L470 AbstractCegarLoop]: Abstraction has 449 states and 624 transitions. [2022-01-31 22:57:38,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 3.922222222222222) internal successors, (353), 89 states have internal predecessors, (353), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:38,612 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 624 transitions. [2022-01-31 22:57:38,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2022-01-31 22:57:38,613 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:38,613 INFO L514 BasicCegarLoop]: trace histogram [87, 87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:38,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-01-31 22:57:38,613 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:38,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:38,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1746248551, now seen corresponding path program 86 times [2022-01-31 22:57:38,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:38,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273030121] [2022-01-31 22:57:38,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:38,620 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:38,620 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:38,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:38,625 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:38,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:41,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:41,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:41,204 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 22:57:41,204 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:41,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273030121] [2022-01-31 22:57:41,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1273030121] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:41,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:41,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [91] imperfect sequences [] total 91 [2022-01-31 22:57:41,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620255081] [2022-01-31 22:57:41,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:41,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-01-31 22:57:41,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:41,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-01-31 22:57:41,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2022-01-31 22:57:41,205 INFO L87 Difference]: Start difference. First operand 449 states and 624 transitions. Second operand has 91 states, 91 states have (on average 3.923076923076923) internal successors, (357), 90 states have internal predecessors, (357), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:41,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:41,897 INFO L93 Difference]: Finished difference Result 465 states and 645 transitions. [2022-01-31 22:57:41,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-01-31 22:57:41,898 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 3.923076923076923) internal successors, (357), 90 states have internal predecessors, (357), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 360 [2022-01-31 22:57:41,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:41,899 INFO L225 Difference]: With dead ends: 465 [2022-01-31 22:57:41,899 INFO L226 Difference]: Without dead ends: 458 [2022-01-31 22:57:41,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2022-01-31 22:57:41,900 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1353 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1353 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:41,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1353 Valid, 509 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:57:41,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2022-01-31 22:57:41,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 454. [2022-01-31 22:57:41,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 450 states have (on average 1.3955555555555557) internal successors, (628), 450 states have internal predecessors, (628), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:41,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 631 transitions. [2022-01-31 22:57:41,909 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 631 transitions. Word has length 360 [2022-01-31 22:57:41,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:41,909 INFO L470 AbstractCegarLoop]: Abstraction has 454 states and 631 transitions. [2022-01-31 22:57:41,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 3.923076923076923) internal successors, (357), 90 states have internal predecessors, (357), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:41,909 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 631 transitions. [2022-01-31 22:57:41,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-01-31 22:57:41,911 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:41,911 INFO L514 BasicCegarLoop]: trace histogram [88, 88, 88, 88, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:41,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-01-31 22:57:41,911 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:41,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:41,911 INFO L85 PathProgramCache]: Analyzing trace with hash -2097064992, now seen corresponding path program 87 times [2022-01-31 22:57:41,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:41,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971825740] [2022-01-31 22:57:41,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:41,914 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:41,914 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:41,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:41,917 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:41,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:44,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:44,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:44,566 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 22:57:44,566 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:44,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971825740] [2022-01-31 22:57:44,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1971825740] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:44,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:44,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [92] imperfect sequences [] total 92 [2022-01-31 22:57:44,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737755636] [2022-01-31 22:57:44,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:44,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-01-31 22:57:44,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:44,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-01-31 22:57:44,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4097, Invalid=4275, Unknown=0, NotChecked=0, Total=8372 [2022-01-31 22:57:44,569 INFO L87 Difference]: Start difference. First operand 454 states and 631 transitions. Second operand has 92 states, 92 states have (on average 3.9239130434782608) internal successors, (361), 91 states have internal predecessors, (361), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:45,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:45,350 INFO L93 Difference]: Finished difference Result 470 states and 652 transitions. [2022-01-31 22:57:45,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-01-31 22:57:45,351 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 3.9239130434782608) internal successors, (361), 91 states have internal predecessors, (361), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 364 [2022-01-31 22:57:45,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:45,352 INFO L225 Difference]: With dead ends: 470 [2022-01-31 22:57:45,352 INFO L226 Difference]: Without dead ends: 463 [2022-01-31 22:57:45,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=4097, Invalid=4275, Unknown=0, NotChecked=0, Total=8372 [2022-01-31 22:57:45,355 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1458 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:45,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1458 Valid, 514 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:57:45,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-01-31 22:57:45,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 459. [2022-01-31 22:57:45,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 455 states have (on average 1.3956043956043955) internal successors, (635), 455 states have internal predecessors, (635), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:45,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 638 transitions. [2022-01-31 22:57:45,362 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 638 transitions. Word has length 364 [2022-01-31 22:57:45,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:45,362 INFO L470 AbstractCegarLoop]: Abstraction has 459 states and 638 transitions. [2022-01-31 22:57:45,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 3.9239130434782608) internal successors, (361), 91 states have internal predecessors, (361), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:45,362 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 638 transitions. [2022-01-31 22:57:45,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2022-01-31 22:57:45,370 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:45,370 INFO L514 BasicCegarLoop]: trace histogram [89, 89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:45,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-01-31 22:57:45,370 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:45,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:45,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1884467289, now seen corresponding path program 88 times [2022-01-31 22:57:45,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:45,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125834380] [2022-01-31 22:57:45,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:45,373 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:45,373 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:45,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:45,377 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:45,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:48,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:48,056 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 22:57:48,056 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:48,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125834380] [2022-01-31 22:57:48,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [125834380] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:48,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:48,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [93] imperfect sequences [] total 93 [2022-01-31 22:57:48,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116650153] [2022-01-31 22:57:48,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:48,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-01-31 22:57:48,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:48,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-01-31 22:57:48,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556 [2022-01-31 22:57:48,058 INFO L87 Difference]: Start difference. First operand 459 states and 638 transitions. Second operand has 93 states, 93 states have (on average 3.924731182795699) internal successors, (365), 92 states have internal predecessors, (365), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:48,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:48,794 INFO L93 Difference]: Finished difference Result 475 states and 659 transitions. [2022-01-31 22:57:48,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-01-31 22:57:48,794 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 3.924731182795699) internal successors, (365), 92 states have internal predecessors, (365), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 368 [2022-01-31 22:57:48,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:48,796 INFO L225 Difference]: With dead ends: 475 [2022-01-31 22:57:48,796 INFO L226 Difference]: Without dead ends: 468 [2022-01-31 22:57:48,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556 [2022-01-31 22:57:48,796 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1272 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1272 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:48,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1272 Valid, 531 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:57:48,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2022-01-31 22:57:48,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 464. [2022-01-31 22:57:48,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 460 states have (on average 1.3956521739130434) internal successors, (642), 460 states have internal predecessors, (642), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:48,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 645 transitions. [2022-01-31 22:57:48,804 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 645 transitions. Word has length 368 [2022-01-31 22:57:48,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:48,805 INFO L470 AbstractCegarLoop]: Abstraction has 464 states and 645 transitions. [2022-01-31 22:57:48,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 3.924731182795699) internal successors, (365), 92 states have internal predecessors, (365), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:48,805 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 645 transitions. [2022-01-31 22:57:48,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2022-01-31 22:57:48,806 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:48,806 INFO L514 BasicCegarLoop]: trace histogram [90, 90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:48,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-01-31 22:57:48,806 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:48,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:48,807 INFO L85 PathProgramCache]: Analyzing trace with hash 718802926, now seen corresponding path program 89 times [2022-01-31 22:57:48,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:48,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954615348] [2022-01-31 22:57:48,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:48,809 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:48,809 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:48,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:48,813 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:51,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:51,548 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 22:57:51,548 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:51,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954615348] [2022-01-31 22:57:51,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1954615348] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:51,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:51,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [94] imperfect sequences [] total 94 [2022-01-31 22:57:51,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716139936] [2022-01-31 22:57:51,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:51,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-01-31 22:57:51,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:51,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-01-31 22:57:51,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742 [2022-01-31 22:57:51,551 INFO L87 Difference]: Start difference. First operand 464 states and 645 transitions. Second operand has 94 states, 94 states have (on average 3.925531914893617) internal successors, (369), 93 states have internal predecessors, (369), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:52,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:52,315 INFO L93 Difference]: Finished difference Result 480 states and 666 transitions. [2022-01-31 22:57:52,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-01-31 22:57:52,315 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 3.925531914893617) internal successors, (369), 93 states have internal predecessors, (369), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 372 [2022-01-31 22:57:52,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:52,316 INFO L225 Difference]: With dead ends: 480 [2022-01-31 22:57:52,316 INFO L226 Difference]: Without dead ends: 473 [2022-01-31 22:57:52,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742 [2022-01-31 22:57:52,317 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1308 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:52,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1308 Valid, 548 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:57:52,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2022-01-31 22:57:52,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 469. [2022-01-31 22:57:52,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 465 states have (on average 1.3956989247311828) internal successors, (649), 465 states have internal predecessors, (649), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:52,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 652 transitions. [2022-01-31 22:57:52,326 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 652 transitions. Word has length 372 [2022-01-31 22:57:52,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:52,326 INFO L470 AbstractCegarLoop]: Abstraction has 469 states and 652 transitions. [2022-01-31 22:57:52,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 3.925531914893617) internal successors, (369), 93 states have internal predecessors, (369), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:52,327 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 652 transitions. [2022-01-31 22:57:52,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2022-01-31 22:57:52,328 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:52,329 INFO L514 BasicCegarLoop]: trace histogram [91, 91, 91, 91, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:52,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-01-31 22:57:52,329 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:52,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:52,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1232382795, now seen corresponding path program 90 times [2022-01-31 22:57:52,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:52,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552698814] [2022-01-31 22:57:52,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:52,336 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:52,337 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:52,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:52,342 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:55,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:55,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:55,157 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 22:57:55,157 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:55,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1552698814] [2022-01-31 22:57:55,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1552698814] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:55,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:55,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [95] imperfect sequences [] total 95 [2022-01-31 22:57:55,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845267372] [2022-01-31 22:57:55,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:55,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-01-31 22:57:55,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:55,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-01-31 22:57:55,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930 [2022-01-31 22:57:55,159 INFO L87 Difference]: Start difference. First operand 469 states and 652 transitions. Second operand has 95 states, 95 states have (on average 3.9263157894736844) internal successors, (373), 94 states have internal predecessors, (373), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:55,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:55,945 INFO L93 Difference]: Finished difference Result 485 states and 673 transitions. [2022-01-31 22:57:55,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-01-31 22:57:55,946 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 3.9263157894736844) internal successors, (373), 94 states have internal predecessors, (373), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 376 [2022-01-31 22:57:55,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:55,948 INFO L225 Difference]: With dead ends: 485 [2022-01-31 22:57:55,948 INFO L226 Difference]: Without dead ends: 478 [2022-01-31 22:57:55,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930 [2022-01-31 22:57:55,948 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1362 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1362 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:55,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1362 Valid, 613 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:57:55,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2022-01-31 22:57:55,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 474. [2022-01-31 22:57:55,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 470 states have (on average 1.3957446808510638) internal successors, (656), 470 states have internal predecessors, (656), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:55,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 659 transitions. [2022-01-31 22:57:55,956 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 659 transitions. Word has length 376 [2022-01-31 22:57:55,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:55,956 INFO L470 AbstractCegarLoop]: Abstraction has 474 states and 659 transitions. [2022-01-31 22:57:55,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 3.9263157894736844) internal successors, (373), 94 states have internal predecessors, (373), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:55,956 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 659 transitions. [2022-01-31 22:57:55,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2022-01-31 22:57:55,958 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:55,958 INFO L514 BasicCegarLoop]: trace histogram [92, 92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:55,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-01-31 22:57:55,958 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:55,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:55,958 INFO L85 PathProgramCache]: Analyzing trace with hash -101655044, now seen corresponding path program 91 times [2022-01-31 22:57:55,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:55,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682522992] [2022-01-31 22:57:55,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:55,960 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:55,960 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:55,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:55,965 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:56,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:58,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:58,898 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 22:57:58,898 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:58,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682522992] [2022-01-31 22:57:58,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1682522992] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:58,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:58,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [96] imperfect sequences [] total 96 [2022-01-31 22:57:58,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102921129] [2022-01-31 22:57:58,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:58,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-01-31 22:57:58,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:58,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-01-31 22:57:58,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120 [2022-01-31 22:57:58,902 INFO L87 Difference]: Start difference. First operand 474 states and 659 transitions. Second operand has 96 states, 96 states have (on average 3.9270833333333335) internal successors, (377), 95 states have internal predecessors, (377), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:59,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:59,700 INFO L93 Difference]: Finished difference Result 490 states and 680 transitions. [2022-01-31 22:57:59,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-01-31 22:57:59,700 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 3.9270833333333335) internal successors, (377), 95 states have internal predecessors, (377), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 380 [2022-01-31 22:57:59,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:59,702 INFO L225 Difference]: With dead ends: 490 [2022-01-31 22:57:59,702 INFO L226 Difference]: Without dead ends: 483 [2022-01-31 22:57:59,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120 [2022-01-31 22:57:59,702 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1257 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:59,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1257 Valid, 558 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:57:59,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-01-31 22:57:59,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 479. [2022-01-31 22:57:59,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 475 states have (on average 1.3957894736842105) internal successors, (663), 475 states have internal predecessors, (663), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:59,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 666 transitions. [2022-01-31 22:57:59,709 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 666 transitions. Word has length 380 [2022-01-31 22:57:59,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:59,709 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 666 transitions. [2022-01-31 22:57:59,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 3.9270833333333335) internal successors, (377), 95 states have internal predecessors, (377), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:59,709 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 666 transitions. [2022-01-31 22:57:59,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2022-01-31 22:57:59,711 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:59,711 INFO L514 BasicCegarLoop]: trace histogram [93, 93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:59,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-01-31 22:57:59,711 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:59,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:59,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1856869437, now seen corresponding path program 92 times [2022-01-31 22:57:59,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:59,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93015643] [2022-01-31 22:57:59,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:59,714 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:59,714 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:59,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:59,719 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:02,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:58:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:02,724 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 22:58:02,724 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:58:02,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93015643] [2022-01-31 22:58:02,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [93015643] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:58:02,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:58:02,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [97] imperfect sequences [] total 97 [2022-01-31 22:58:02,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675165828] [2022-01-31 22:58:02,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:58:02,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-01-31 22:58:02,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:58:02,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-01-31 22:58:02,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2022-01-31 22:58:02,727 INFO L87 Difference]: Start difference. First operand 479 states and 666 transitions. Second operand has 97 states, 97 states have (on average 3.9278350515463916) internal successors, (381), 96 states have internal predecessors, (381), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:03,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:58:03,579 INFO L93 Difference]: Finished difference Result 495 states and 687 transitions. [2022-01-31 22:58:03,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-01-31 22:58:03,580 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 3.9278350515463916) internal successors, (381), 96 states have internal predecessors, (381), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 384 [2022-01-31 22:58:03,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:58:03,581 INFO L225 Difference]: With dead ends: 495 [2022-01-31 22:58:03,581 INFO L226 Difference]: Without dead ends: 488 [2022-01-31 22:58:03,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2022-01-31 22:58:03,582 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1455 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:58:03,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1455 Valid, 527 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:58:03,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2022-01-31 22:58:03,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 484. [2022-01-31 22:58:03,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 480 states have (on average 1.3958333333333333) internal successors, (670), 480 states have internal predecessors, (670), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:03,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 673 transitions. [2022-01-31 22:58:03,589 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 673 transitions. Word has length 384 [2022-01-31 22:58:03,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:58:03,589 INFO L470 AbstractCegarLoop]: Abstraction has 484 states and 673 transitions. [2022-01-31 22:58:03,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 3.9278350515463916) internal successors, (381), 96 states have internal predecessors, (381), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:03,590 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 673 transitions. [2022-01-31 22:58:03,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2022-01-31 22:58:03,591 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:58:03,591 INFO L514 BasicCegarLoop]: trace histogram [94, 94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:58:03,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-01-31 22:58:03,591 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:58:03,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:58:03,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1578745354, now seen corresponding path program 93 times [2022-01-31 22:58:03,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:58:03,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052476290] [2022-01-31 22:58:03,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:58:03,599 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:58:03,599 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:58:03,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:58:03,604 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:58:03,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:06,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:58:06,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:06,555 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 22:58:06,555 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:58:06,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052476290] [2022-01-31 22:58:06,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1052476290] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:58:06,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:58:06,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [98] imperfect sequences [] total 98 [2022-01-31 22:58:06,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191736188] [2022-01-31 22:58:06,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:58:06,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-01-31 22:58:06,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:58:06,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-01-31 22:58:06,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506 [2022-01-31 22:58:06,558 INFO L87 Difference]: Start difference. First operand 484 states and 673 transitions. Second operand has 98 states, 98 states have (on average 3.9285714285714284) internal successors, (385), 97 states have internal predecessors, (385), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:07,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:58:07,389 INFO L93 Difference]: Finished difference Result 500 states and 694 transitions. [2022-01-31 22:58:07,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-01-31 22:58:07,390 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 3.9285714285714284) internal successors, (385), 97 states have internal predecessors, (385), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 388 [2022-01-31 22:58:07,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:58:07,392 INFO L225 Difference]: With dead ends: 500 [2022-01-31 22:58:07,392 INFO L226 Difference]: Without dead ends: 493 [2022-01-31 22:58:07,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506 [2022-01-31 22:58:07,393 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1500 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:58:07,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1500 Valid, 568 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:58:07,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-01-31 22:58:07,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 489. [2022-01-31 22:58:07,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 485 states have (on average 1.3958762886597937) internal successors, (677), 485 states have internal predecessors, (677), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:07,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 680 transitions. [2022-01-31 22:58:07,402 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 680 transitions. Word has length 388 [2022-01-31 22:58:07,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:58:07,403 INFO L470 AbstractCegarLoop]: Abstraction has 489 states and 680 transitions. [2022-01-31 22:58:07,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 3.9285714285714284) internal successors, (385), 97 states have internal predecessors, (385), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:07,403 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 680 transitions. [2022-01-31 22:58:07,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2022-01-31 22:58:07,404 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:58:07,404 INFO L514 BasicCegarLoop]: trace histogram [95, 95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:58:07,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-01-31 22:58:07,404 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:58:07,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:58:07,405 INFO L85 PathProgramCache]: Analyzing trace with hash -154102575, now seen corresponding path program 94 times [2022-01-31 22:58:07,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:58:07,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693061400] [2022-01-31 22:58:07,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:58:07,407 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:58:07,407 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:58:07,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:58:07,412 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:58:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:10,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:58:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:10,461 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 22:58:10,461 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:58:10,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693061400] [2022-01-31 22:58:10,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [693061400] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:58:10,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:58:10,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [99] imperfect sequences [] total 99 [2022-01-31 22:58:10,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843197661] [2022-01-31 22:58:10,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:58:10,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-01-31 22:58:10,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:58:10,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-01-31 22:58:10,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2022-01-31 22:58:10,463 INFO L87 Difference]: Start difference. First operand 489 states and 680 transitions. Second operand has 99 states, 99 states have (on average 3.9292929292929295) internal successors, (389), 98 states have internal predecessors, (389), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:11,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:58:11,392 INFO L93 Difference]: Finished difference Result 505 states and 701 transitions. [2022-01-31 22:58:11,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-01-31 22:58:11,392 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 3.9292929292929295) internal successors, (389), 98 states have internal predecessors, (389), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 392 [2022-01-31 22:58:11,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:58:11,394 INFO L225 Difference]: With dead ends: 505 [2022-01-31 22:58:11,394 INFO L226 Difference]: Without dead ends: 498 [2022-01-31 22:58:11,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2022-01-31 22:58:11,395 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1389 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1389 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:58:11,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1389 Valid, 585 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:58:11,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2022-01-31 22:58:11,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 494. [2022-01-31 22:58:11,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 490 states have (on average 1.3959183673469389) internal successors, (684), 490 states have internal predecessors, (684), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:11,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 687 transitions. [2022-01-31 22:58:11,404 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 687 transitions. Word has length 392 [2022-01-31 22:58:11,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:58:11,405 INFO L470 AbstractCegarLoop]: Abstraction has 494 states and 687 transitions. [2022-01-31 22:58:11,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 3.9292929292929295) internal successors, (389), 98 states have internal predecessors, (389), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:11,405 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 687 transitions. [2022-01-31 22:58:11,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2022-01-31 22:58:11,407 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:58:11,407 INFO L514 BasicCegarLoop]: trace histogram [96, 96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:58:11,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-01-31 22:58:11,407 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:58:11,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:58:11,408 INFO L85 PathProgramCache]: Analyzing trace with hash 388018200, now seen corresponding path program 95 times [2022-01-31 22:58:11,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:58:11,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50297980] [2022-01-31 22:58:11,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:58:11,412 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:58:11,413 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:58:11,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:58:11,418 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:58:11,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:14,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:58:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:14,503 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 22:58:14,503 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:58:14,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50297980] [2022-01-31 22:58:14,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [50297980] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:58:14,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:58:14,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [100] imperfect sequences [] total 100 [2022-01-31 22:58:14,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399082405] [2022-01-31 22:58:14,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:58:14,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2022-01-31 22:58:14,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:58:14,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2022-01-31 22:58:14,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900 [2022-01-31 22:58:14,506 INFO L87 Difference]: Start difference. First operand 494 states and 687 transitions. Second operand has 100 states, 100 states have (on average 3.93) internal successors, (393), 99 states have internal predecessors, (393), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:15,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:58:15,420 INFO L93 Difference]: Finished difference Result 510 states and 708 transitions. [2022-01-31 22:58:15,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-01-31 22:58:15,421 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 3.93) internal successors, (393), 99 states have internal predecessors, (393), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 396 [2022-01-31 22:58:15,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:58:15,422 INFO L225 Difference]: With dead ends: 510 [2022-01-31 22:58:15,422 INFO L226 Difference]: Without dead ends: 503 [2022-01-31 22:58:15,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900 [2022-01-31 22:58:15,424 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1626 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1626 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:58:15,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1626 Valid, 542 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:58:15,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2022-01-31 22:58:15,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 499. [2022-01-31 22:58:15,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 495 states have (on average 1.395959595959596) internal successors, (691), 495 states have internal predecessors, (691), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:15,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 694 transitions. [2022-01-31 22:58:15,431 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 694 transitions. Word has length 396 [2022-01-31 22:58:15,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:58:15,431 INFO L470 AbstractCegarLoop]: Abstraction has 499 states and 694 transitions. [2022-01-31 22:58:15,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 3.93) internal successors, (393), 99 states have internal predecessors, (393), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:15,431 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 694 transitions. [2022-01-31 22:58:15,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2022-01-31 22:58:15,433 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:58:15,433 INFO L514 BasicCegarLoop]: trace histogram [97, 97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:58:15,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-01-31 22:58:15,433 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:58:15,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:58:15,433 INFO L85 PathProgramCache]: Analyzing trace with hash 265539551, now seen corresponding path program 96 times [2022-01-31 22:58:15,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:58:15,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54554740] [2022-01-31 22:58:15,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:58:15,435 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:58:15,436 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:58:15,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:58:15,440 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:58:15,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:18,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:58:18,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:18,586 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 22:58:18,586 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:58:18,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54554740] [2022-01-31 22:58:18,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [54554740] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:58:18,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:58:18,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [101] imperfect sequences [] total 101 [2022-01-31 22:58:18,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406812709] [2022-01-31 22:58:18,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:58:18,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-01-31 22:58:18,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:58:18,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-01-31 22:58:18,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4952, Invalid=5148, Unknown=0, NotChecked=0, Total=10100 [2022-01-31 22:58:18,588 INFO L87 Difference]: Start difference. First operand 499 states and 694 transitions. Second operand has 101 states, 101 states have (on average 3.9306930693069306) internal successors, (397), 100 states have internal predecessors, (397), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:19,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:58:19,525 INFO L93 Difference]: Finished difference Result 515 states and 715 transitions. [2022-01-31 22:58:19,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-01-31 22:58:19,525 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 3.9306930693069306) internal successors, (397), 100 states have internal predecessors, (397), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 400 [2022-01-31 22:58:19,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:58:19,527 INFO L225 Difference]: With dead ends: 515 [2022-01-31 22:58:19,527 INFO L226 Difference]: Without dead ends: 508 [2022-01-31 22:58:19,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4952, Invalid=5148, Unknown=0, NotChecked=0, Total=10100 [2022-01-31 22:58:19,528 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1584 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1584 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:58:19,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1584 Valid, 559 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:58:19,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2022-01-31 22:58:19,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 504. [2022-01-31 22:58:19,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 500 states have (on average 1.396) internal successors, (698), 500 states have internal predecessors, (698), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:19,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 701 transitions. [2022-01-31 22:58:19,536 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 701 transitions. Word has length 400 [2022-01-31 22:58:19,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:58:19,536 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 701 transitions. [2022-01-31 22:58:19,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 3.9306930693069306) internal successors, (397), 100 states have internal predecessors, (397), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:19,536 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 701 transitions. [2022-01-31 22:58:19,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2022-01-31 22:58:19,538 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:58:19,538 INFO L514 BasicCegarLoop]: trace histogram [98, 98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:58:19,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-01-31 22:58:19,539 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:58:19,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:58:19,539 INFO L85 PathProgramCache]: Analyzing trace with hash 919843878, now seen corresponding path program 97 times [2022-01-31 22:58:19,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:58:19,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980352156] [2022-01-31 22:58:19,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:58:19,542 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:58:19,542 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:58:19,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:58:19,547 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:58:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:22,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:58:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:22,737 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 22:58:22,737 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:58:22,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980352156] [2022-01-31 22:58:22,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [980352156] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:58:22,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:58:22,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [102] imperfect sequences [] total 102 [2022-01-31 22:58:22,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144177424] [2022-01-31 22:58:22,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:58:22,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-01-31 22:58:22,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:58:22,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-01-31 22:58:22,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302 [2022-01-31 22:58:22,740 INFO L87 Difference]: Start difference. First operand 504 states and 701 transitions. Second operand has 102 states, 102 states have (on average 3.9313725490196076) internal successors, (401), 101 states have internal predecessors, (401), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:23,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:58:23,611 INFO L93 Difference]: Finished difference Result 520 states and 722 transitions. [2022-01-31 22:58:23,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-01-31 22:58:23,611 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 3.9313725490196076) internal successors, (401), 101 states have internal predecessors, (401), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 404 [2022-01-31 22:58:23,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:58:23,613 INFO L225 Difference]: With dead ends: 520 [2022-01-31 22:58:23,613 INFO L226 Difference]: Without dead ends: 513 [2022-01-31 22:58:23,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302 [2022-01-31 22:58:23,614 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1935 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1935 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:58:23,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1935 Valid, 576 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:58:23,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2022-01-31 22:58:23,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 509. [2022-01-31 22:58:23,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 505 states have (on average 1.396039603960396) internal successors, (705), 505 states have internal predecessors, (705), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:23,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 708 transitions. [2022-01-31 22:58:23,623 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 708 transitions. Word has length 404 [2022-01-31 22:58:23,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:58:23,624 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 708 transitions. [2022-01-31 22:58:23,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 3.9313725490196076) internal successors, (401), 101 states have internal predecessors, (401), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:23,624 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 708 transitions. [2022-01-31 22:58:23,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2022-01-31 22:58:23,625 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:58:23,625 INFO L514 BasicCegarLoop]: trace histogram [99, 99, 99, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:58:23,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-01-31 22:58:23,626 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:58:23,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:58:23,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1462377709, now seen corresponding path program 98 times [2022-01-31 22:58:23,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:58:23,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663271167] [2022-01-31 22:58:23,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:58:23,630 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:58:23,631 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:58:23,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:58:23,636 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:58:23,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:26,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:58:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:26,891 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 22:58:26,891 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:58:26,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663271167] [2022-01-31 22:58:26,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [663271167] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:58:26,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:58:26,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [] total 103 [2022-01-31 22:58:26,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069124324] [2022-01-31 22:58:26,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:58:26,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-01-31 22:58:26,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:58:26,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-01-31 22:58:26,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2022-01-31 22:58:26,894 INFO L87 Difference]: Start difference. First operand 509 states and 708 transitions. Second operand has 103 states, 103 states have (on average 3.9320388349514563) internal successors, (405), 102 states have internal predecessors, (405), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:27,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:58:27,915 INFO L93 Difference]: Finished difference Result 525 states and 729 transitions. [2022-01-31 22:58:27,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-01-31 22:58:27,915 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 3.9320388349514563) internal successors, (405), 102 states have internal predecessors, (405), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 408 [2022-01-31 22:58:27,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:58:27,917 INFO L225 Difference]: With dead ends: 525 [2022-01-31 22:58:27,917 INFO L226 Difference]: Without dead ends: 518 [2022-01-31 22:58:27,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2022-01-31 22:58:27,917 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1719 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1719 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:58:27,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1719 Valid, 605 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:58:27,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2022-01-31 22:58:27,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 514. [2022-01-31 22:58:27,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 510 states have (on average 1.396078431372549) internal successors, (712), 510 states have internal predecessors, (712), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:27,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 715 transitions. [2022-01-31 22:58:27,925 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 715 transitions. Word has length 408 [2022-01-31 22:58:27,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:58:27,925 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 715 transitions. [2022-01-31 22:58:27,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 3.9320388349514563) internal successors, (405), 102 states have internal predecessors, (405), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:27,925 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 715 transitions. [2022-01-31 22:58:27,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2022-01-31 22:58:27,927 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:58:27,927 INFO L514 BasicCegarLoop]: trace histogram [100, 100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:58:27,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-01-31 22:58:27,927 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:58:27,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:58:27,927 INFO L85 PathProgramCache]: Analyzing trace with hash 553699892, now seen corresponding path program 99 times [2022-01-31 22:58:27,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:58:27,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365819602] [2022-01-31 22:58:27,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:58:27,932 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:58:27,932 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:58:27,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:58:27,939 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:58:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:31,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:58:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:31,300 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 22:58:31,301 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:58:31,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365819602] [2022-01-31 22:58:31,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [365819602] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:58:31,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:58:31,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [104] imperfect sequences [] total 104 [2022-01-31 22:58:31,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078966672] [2022-01-31 22:58:31,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:58:31,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-01-31 22:58:31,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:58:31,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-01-31 22:58:31,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=5457, Unknown=0, NotChecked=0, Total=10712 [2022-01-31 22:58:31,305 INFO L87 Difference]: Start difference. First operand 514 states and 715 transitions. Second operand has 104 states, 104 states have (on average 3.9326923076923075) internal successors, (409), 103 states have internal predecessors, (409), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:32,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:58:32,366 INFO L93 Difference]: Finished difference Result 530 states and 736 transitions. [2022-01-31 22:58:32,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-01-31 22:58:32,366 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 3.9326923076923075) internal successors, (409), 103 states have internal predecessors, (409), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 412 [2022-01-31 22:58:32,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:58:32,368 INFO L225 Difference]: With dead ends: 530 [2022-01-31 22:58:32,368 INFO L226 Difference]: Without dead ends: 523 [2022-01-31 22:58:32,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=5255, Invalid=5457, Unknown=0, NotChecked=0, Total=10712 [2022-01-31 22:58:32,369 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1671 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1671 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:58:32,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1671 Valid, 598 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:58:32,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2022-01-31 22:58:32,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 519. [2022-01-31 22:58:32,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 515 states have (on average 1.396116504854369) internal successors, (719), 515 states have internal predecessors, (719), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:32,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 722 transitions. [2022-01-31 22:58:32,378 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 722 transitions. Word has length 412 [2022-01-31 22:58:32,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:58:32,378 INFO L470 AbstractCegarLoop]: Abstraction has 519 states and 722 transitions. [2022-01-31 22:58:32,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 3.9326923076923075) internal successors, (409), 103 states have internal predecessors, (409), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:32,378 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 722 transitions. [2022-01-31 22:58:32,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2022-01-31 22:58:32,380 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:58:32,380 INFO L514 BasicCegarLoop]: trace histogram [101, 101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:58:32,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-01-31 22:58:32,381 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:58:32,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:58:32,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1717470213, now seen corresponding path program 100 times [2022-01-31 22:58:32,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:58:32,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005043287] [2022-01-31 22:58:32,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:58:32,385 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:58:32,385 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:58:32,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:58:32,392 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:58:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:35,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:58:35,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:35,819 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 22:58:35,819 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:58:35,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005043287] [2022-01-31 22:58:35,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1005043287] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:58:35,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:58:35,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [105] imperfect sequences [] total 105 [2022-01-31 22:58:35,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799988641] [2022-01-31 22:58:35,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:58:35,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2022-01-31 22:58:35,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:58:35,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2022-01-31 22:58:35,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5358, Invalid=5562, Unknown=0, NotChecked=0, Total=10920 [2022-01-31 22:58:35,822 INFO L87 Difference]: Start difference. First operand 519 states and 722 transitions. Second operand has 105 states, 105 states have (on average 3.933333333333333) internal successors, (413), 104 states have internal predecessors, (413), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:36,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:58:36,876 INFO L93 Difference]: Finished difference Result 535 states and 743 transitions. [2022-01-31 22:58:36,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-01-31 22:58:36,876 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 3.933333333333333) internal successors, (413), 104 states have internal predecessors, (413), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 416 [2022-01-31 22:58:36,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:58:36,877 INFO L225 Difference]: With dead ends: 535 [2022-01-31 22:58:36,877 INFO L226 Difference]: Without dead ends: 528 [2022-01-31 22:58:36,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=5358, Invalid=5562, Unknown=0, NotChecked=0, Total=10920 [2022-01-31 22:58:36,878 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1572 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1572 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:58:36,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1572 Valid, 579 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:58:36,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2022-01-31 22:58:36,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 524. [2022-01-31 22:58:36,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 520 states have (on average 1.396153846153846) internal successors, (726), 520 states have internal predecessors, (726), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:36,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 729 transitions. [2022-01-31 22:58:36,886 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 729 transitions. Word has length 416 [2022-01-31 22:58:36,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:58:36,886 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 729 transitions. [2022-01-31 22:58:36,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 3.933333333333333) internal successors, (413), 104 states have internal predecessors, (413), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:36,887 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 729 transitions. [2022-01-31 22:58:36,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2022-01-31 22:58:36,888 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:58:36,888 INFO L514 BasicCegarLoop]: trace histogram [102, 102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:58:36,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-01-31 22:58:36,888 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:58:36,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:58:36,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1955204542, now seen corresponding path program 101 times [2022-01-31 22:58:36,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:58:36,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548303251] [2022-01-31 22:58:36,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:58:36,890 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:58:36,891 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:58:36,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:58:36,897 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:58:36,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:40,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:58:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:40,377 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 22:58:40,378 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:58:40,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548303251] [2022-01-31 22:58:40,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [548303251] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:58:40,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:58:40,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [106] imperfect sequences [] total 106 [2022-01-31 22:58:40,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070825996] [2022-01-31 22:58:40,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:58:40,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2022-01-31 22:58:40,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:58:40,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2022-01-31 22:58:40,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130 [2022-01-31 22:58:40,380 INFO L87 Difference]: Start difference. First operand 524 states and 729 transitions. Second operand has 106 states, 106 states have (on average 3.9339622641509435) internal successors, (417), 105 states have internal predecessors, (417), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:41,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:58:41,443 INFO L93 Difference]: Finished difference Result 540 states and 750 transitions. [2022-01-31 22:58:41,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-01-31 22:58:41,444 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 3.9339622641509435) internal successors, (417), 105 states have internal predecessors, (417), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 420 [2022-01-31 22:58:41,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:58:41,445 INFO L225 Difference]: With dead ends: 540 [2022-01-31 22:58:41,445 INFO L226 Difference]: Without dead ends: 533 [2022-01-31 22:58:41,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130 [2022-01-31 22:58:41,446 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1740 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1740 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:58:41,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1740 Valid, 608 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:58:41,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2022-01-31 22:58:41,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 529. [2022-01-31 22:58:41,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 525 states have (on average 1.3961904761904762) internal successors, (733), 525 states have internal predecessors, (733), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:41,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 736 transitions. [2022-01-31 22:58:41,455 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 736 transitions. Word has length 420 [2022-01-31 22:58:41,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:58:41,455 INFO L470 AbstractCegarLoop]: Abstraction has 529 states and 736 transitions. [2022-01-31 22:58:41,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 3.9339622641509435) internal successors, (417), 105 states have internal predecessors, (417), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:41,456 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 736 transitions. [2022-01-31 22:58:41,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2022-01-31 22:58:41,457 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:58:41,458 INFO L514 BasicCegarLoop]: trace histogram [103, 103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:58:41,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-01-31 22:58:41,458 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:58:41,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:58:41,458 INFO L85 PathProgramCache]: Analyzing trace with hash -167252727, now seen corresponding path program 102 times [2022-01-31 22:58:41,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:58:41,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180218949] [2022-01-31 22:58:41,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:58:41,464 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:58:41,465 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:58:41,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:58:41,471 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:58:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:45,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:58:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:45,034 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 22:58:45,034 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:58:45,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180218949] [2022-01-31 22:58:45,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [180218949] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:58:45,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:58:45,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [107] imperfect sequences [] total 107 [2022-01-31 22:58:45,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732223036] [2022-01-31 22:58:45,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:58:45,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-01-31 22:58:45,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:58:45,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-01-31 22:58:45,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342 [2022-01-31 22:58:45,037 INFO L87 Difference]: Start difference. First operand 529 states and 736 transitions. Second operand has 107 states, 107 states have (on average 3.9345794392523366) internal successors, (421), 106 states have internal predecessors, (421), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:46,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:58:46,069 INFO L93 Difference]: Finished difference Result 545 states and 757 transitions. [2022-01-31 22:58:46,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-01-31 22:58:46,070 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 3.9345794392523366) internal successors, (421), 106 states have internal predecessors, (421), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 424 [2022-01-31 22:58:46,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:58:46,070 INFO L225 Difference]: With dead ends: 545 [2022-01-31 22:58:46,071 INFO L226 Difference]: Without dead ends: 538 [2022-01-31 22:58:46,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342 [2022-01-31 22:58:46,071 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1665 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1665 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:58:46,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1665 Valid, 589 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:58:46,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-01-31 22:58:46,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 534. [2022-01-31 22:58:46,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 530 states have (on average 1.3962264150943395) internal successors, (740), 530 states have internal predecessors, (740), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:46,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 743 transitions. [2022-01-31 22:58:46,078 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 743 transitions. Word has length 424 [2022-01-31 22:58:46,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:58:46,078 INFO L470 AbstractCegarLoop]: Abstraction has 534 states and 743 transitions. [2022-01-31 22:58:46,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 3.9345794392523366) internal successors, (421), 106 states have internal predecessors, (421), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:46,078 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 743 transitions. [2022-01-31 22:58:46,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2022-01-31 22:58:46,079 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:58:46,080 INFO L514 BasicCegarLoop]: trace histogram [104, 104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:58:46,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-01-31 22:58:46,080 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:58:46,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:58:46,080 INFO L85 PathProgramCache]: Analyzing trace with hash 2114006096, now seen corresponding path program 103 times [2022-01-31 22:58:46,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:58:46,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642076164] [2022-01-31 22:58:46,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:58:46,082 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:58:46,082 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:58:46,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:58:46,088 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:58:46,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:49,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:58:49,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:49,668 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 22:58:49,668 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:58:49,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642076164] [2022-01-31 22:58:49,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [642076164] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:58:49,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:58:49,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [108] imperfect sequences [] total 108 [2022-01-31 22:58:49,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841286722] [2022-01-31 22:58:49,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:58:49,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2022-01-31 22:58:49,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:58:49,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2022-01-31 22:58:49,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5673, Invalid=5883, Unknown=0, NotChecked=0, Total=11556 [2022-01-31 22:58:49,670 INFO L87 Difference]: Start difference. First operand 534 states and 743 transitions. Second operand has 108 states, 108 states have (on average 3.935185185185185) internal successors, (425), 107 states have internal predecessors, (425), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:50,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:58:50,799 INFO L93 Difference]: Finished difference Result 550 states and 764 transitions. [2022-01-31 22:58:50,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-01-31 22:58:50,799 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 3.935185185185185) internal successors, (425), 107 states have internal predecessors, (425), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 428 [2022-01-31 22:58:50,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:58:50,800 INFO L225 Difference]: With dead ends: 550 [2022-01-31 22:58:50,800 INFO L226 Difference]: Without dead ends: 543 [2022-01-31 22:58:50,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=5673, Invalid=5883, Unknown=0, NotChecked=0, Total=11556 [2022-01-31 22:58:50,801 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1440 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1440 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:58:50,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1440 Valid, 642 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:58:50,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-01-31 22:58:50,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 539. [2022-01-31 22:58:50,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 535 states have (on average 1.3962616822429907) internal successors, (747), 535 states have internal predecessors, (747), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:50,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 750 transitions. [2022-01-31 22:58:50,807 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 750 transitions. Word has length 428 [2022-01-31 22:58:50,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:58:50,808 INFO L470 AbstractCegarLoop]: Abstraction has 539 states and 750 transitions. [2022-01-31 22:58:50,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 108 states have (on average 3.935185185185185) internal successors, (425), 107 states have internal predecessors, (425), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:50,808 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 750 transitions. [2022-01-31 22:58:50,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2022-01-31 22:58:50,809 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:58:50,809 INFO L514 BasicCegarLoop]: trace histogram [105, 105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:58:50,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-01-31 22:58:50,809 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:58:50,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:58:50,810 INFO L85 PathProgramCache]: Analyzing trace with hash -584355817, now seen corresponding path program 104 times [2022-01-31 22:58:50,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:58:50,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933227354] [2022-01-31 22:58:50,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:58:50,812 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:58:50,812 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:58:50,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:58:50,818 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:58:50,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:54,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:58:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:54,476 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 22:58:54,476 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:58:54,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933227354] [2022-01-31 22:58:54,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [933227354] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:58:54,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:58:54,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [109] imperfect sequences [] total 109 [2022-01-31 22:58:54,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135877128] [2022-01-31 22:58:54,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:58:54,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2022-01-31 22:58:54,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:58:54,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2022-01-31 22:58:54,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5780, Invalid=5992, Unknown=0, NotChecked=0, Total=11772 [2022-01-31 22:58:54,479 INFO L87 Difference]: Start difference. First operand 539 states and 750 transitions. Second operand has 109 states, 109 states have (on average 3.9357798165137616) internal successors, (429), 108 states have internal predecessors, (429), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:55,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:58:55,622 INFO L93 Difference]: Finished difference Result 555 states and 771 transitions. [2022-01-31 22:58:55,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-01-31 22:58:55,622 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 3.9357798165137616) internal successors, (429), 108 states have internal predecessors, (429), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 432 [2022-01-31 22:58:55,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:58:55,623 INFO L225 Difference]: With dead ends: 555 [2022-01-31 22:58:55,623 INFO L226 Difference]: Without dead ends: 548 [2022-01-31 22:58:55,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=5780, Invalid=5992, Unknown=0, NotChecked=0, Total=11772 [2022-01-31 22:58:55,624 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1347 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1347 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:58:55,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1347 Valid, 671 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:58:55,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2022-01-31 22:58:55,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 544. [2022-01-31 22:58:55,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 540 states have (on average 1.3962962962962964) internal successors, (754), 540 states have internal predecessors, (754), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:55,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 757 transitions. [2022-01-31 22:58:55,631 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 757 transitions. Word has length 432 [2022-01-31 22:58:55,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:58:55,631 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 757 transitions. [2022-01-31 22:58:55,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 3.9357798165137616) internal successors, (429), 108 states have internal predecessors, (429), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:55,631 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 757 transitions. [2022-01-31 22:58:55,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2022-01-31 22:58:55,633 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:58:55,633 INFO L514 BasicCegarLoop]: trace histogram [106, 106, 106, 106, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:58:55,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-01-31 22:58:55,633 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:58:55,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:58:55,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1383102558, now seen corresponding path program 105 times [2022-01-31 22:58:55,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:58:55,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774140747] [2022-01-31 22:58:55,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:58:55,635 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:58:55,635 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:58:55,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:58:55,641 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:58:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:59,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:58:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:59,337 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 22:58:59,337 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:58:59,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774140747] [2022-01-31 22:58:59,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [774140747] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:58:59,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:58:59,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [110] imperfect sequences [] total 110 [2022-01-31 22:58:59,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848677633] [2022-01-31 22:58:59,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:58:59,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2022-01-31 22:58:59,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:58:59,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2022-01-31 22:58:59,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5888, Invalid=6102, Unknown=0, NotChecked=0, Total=11990 [2022-01-31 22:58:59,339 INFO L87 Difference]: Start difference. First operand 544 states and 757 transitions. Second operand has 110 states, 110 states have (on average 3.9363636363636365) internal successors, (433), 109 states have internal predecessors, (433), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:00,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:59:00,478 INFO L93 Difference]: Finished difference Result 560 states and 778 transitions. [2022-01-31 22:59:00,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-01-31 22:59:00,479 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 3.9363636363636365) internal successors, (433), 109 states have internal predecessors, (433), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 436 [2022-01-31 22:59:00,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:59:00,480 INFO L225 Difference]: With dead ends: 560 [2022-01-31 22:59:00,480 INFO L226 Difference]: Without dead ends: 553 [2022-01-31 22:59:00,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=5888, Invalid=6102, Unknown=0, NotChecked=0, Total=11990 [2022-01-31 22:59:00,480 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1539 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1539 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:59:00,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1539 Valid, 640 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:59:00,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-01-31 22:59:00,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 549. [2022-01-31 22:59:00,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 545 states have (on average 1.3963302752293578) internal successors, (761), 545 states have internal predecessors, (761), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:00,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 764 transitions. [2022-01-31 22:59:00,487 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 764 transitions. Word has length 436 [2022-01-31 22:59:00,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:59:00,487 INFO L470 AbstractCegarLoop]: Abstraction has 549 states and 764 transitions. [2022-01-31 22:59:00,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 3.9363636363636365) internal successors, (433), 109 states have internal predecessors, (433), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:00,487 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 764 transitions. [2022-01-31 22:59:00,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2022-01-31 22:59:00,488 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:59:00,488 INFO L514 BasicCegarLoop]: trace histogram [107, 107, 107, 107, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:59:00,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-01-31 22:59:00,489 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:59:00,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:59:00,489 INFO L85 PathProgramCache]: Analyzing trace with hash 299500837, now seen corresponding path program 106 times [2022-01-31 22:59:00,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:59:00,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398713398] [2022-01-31 22:59:00,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:59:00,490 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:59:00,491 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:59:00,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:59:00,496 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:59:00,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:04,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:59:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:04,274 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 22:59:04,274 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:59:04,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398713398] [2022-01-31 22:59:04,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1398713398] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:59:04,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:59:04,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [111] imperfect sequences [] total 111 [2022-01-31 22:59:04,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257203238] [2022-01-31 22:59:04,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:59:04,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2022-01-31 22:59:04,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:59:04,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2022-01-31 22:59:04,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210 [2022-01-31 22:59:04,278 INFO L87 Difference]: Start difference. First operand 549 states and 764 transitions. Second operand has 111 states, 111 states have (on average 3.936936936936937) internal successors, (437), 110 states have internal predecessors, (437), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:05,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:59:05,497 INFO L93 Difference]: Finished difference Result 565 states and 785 transitions. [2022-01-31 22:59:05,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-01-31 22:59:05,498 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 3.936936936936937) internal successors, (437), 110 states have internal predecessors, (437), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 440 [2022-01-31 22:59:05,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:59:05,499 INFO L225 Difference]: With dead ends: 565 [2022-01-31 22:59:05,499 INFO L226 Difference]: Without dead ends: 558 [2022-01-31 22:59:05,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210 [2022-01-31 22:59:05,500 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1506 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:59:05,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1506 Valid, 609 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:59:05,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2022-01-31 22:59:05,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 554. [2022-01-31 22:59:05,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 550 states have (on average 1.3963636363636365) internal successors, (768), 550 states have internal predecessors, (768), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:05,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 771 transitions. [2022-01-31 22:59:05,506 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 771 transitions. Word has length 440 [2022-01-31 22:59:05,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:59:05,506 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 771 transitions. [2022-01-31 22:59:05,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 111 states have (on average 3.936936936936937) internal successors, (437), 110 states have internal predecessors, (437), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:05,506 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 771 transitions. [2022-01-31 22:59:05,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2022-01-31 22:59:05,508 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:59:05,508 INFO L514 BasicCegarLoop]: trace histogram [108, 108, 108, 108, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:59:05,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-01-31 22:59:05,508 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:59:05,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:59:05,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1265510804, now seen corresponding path program 107 times [2022-01-31 22:59:05,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:59:05,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800276316] [2022-01-31 22:59:05,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:59:05,515 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:59:05,515 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:59:05,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:59:05,521 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:59:05,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:09,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:59:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:09,421 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 22:59:09,421 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:59:09,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800276316] [2022-01-31 22:59:09,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [800276316] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:59:09,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:59:09,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [112] imperfect sequences [] total 112 [2022-01-31 22:59:09,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81493536] [2022-01-31 22:59:09,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:59:09,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2022-01-31 22:59:09,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:59:09,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2022-01-31 22:59:09,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6107, Invalid=6325, Unknown=0, NotChecked=0, Total=12432 [2022-01-31 22:59:09,424 INFO L87 Difference]: Start difference. First operand 554 states and 771 transitions. Second operand has 112 states, 112 states have (on average 3.9375) internal successors, (441), 111 states have internal predecessors, (441), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:10,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:59:10,696 INFO L93 Difference]: Finished difference Result 570 states and 792 transitions. [2022-01-31 22:59:10,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-01-31 22:59:10,696 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 3.9375) internal successors, (441), 111 states have internal predecessors, (441), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 444 [2022-01-31 22:59:10,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:59:10,697 INFO L225 Difference]: With dead ends: 570 [2022-01-31 22:59:10,697 INFO L226 Difference]: Without dead ends: 563 [2022-01-31 22:59:10,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=6107, Invalid=6325, Unknown=0, NotChecked=0, Total=12432 [2022-01-31 22:59:10,698 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1470 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:59:10,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1470 Valid, 686 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:59:10,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-01-31 22:59:10,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 559. [2022-01-31 22:59:10,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 555 states have (on average 1.3963963963963963) internal successors, (775), 555 states have internal predecessors, (775), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:10,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 778 transitions. [2022-01-31 22:59:10,705 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 778 transitions. Word has length 444 [2022-01-31 22:59:10,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:59:10,705 INFO L470 AbstractCegarLoop]: Abstraction has 559 states and 778 transitions. [2022-01-31 22:59:10,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 112 states have (on average 3.9375) internal successors, (441), 111 states have internal predecessors, (441), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:10,705 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 778 transitions. [2022-01-31 22:59:10,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2022-01-31 22:59:10,707 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:59:10,707 INFO L514 BasicCegarLoop]: trace histogram [109, 109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:59:10,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-01-31 22:59:10,707 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:59:10,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:59:10,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1461605325, now seen corresponding path program 108 times [2022-01-31 22:59:10,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:59:10,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277276737] [2022-01-31 22:59:10,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:59:10,711 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:59:10,711 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:59:10,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:59:10,717 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:59:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:14,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:59:14,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:14,660 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 22:59:14,660 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:59:14,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277276737] [2022-01-31 22:59:14,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [277276737] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:59:14,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:59:14,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [113] imperfect sequences [] total 113 [2022-01-31 22:59:14,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214551594] [2022-01-31 22:59:14,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:59:14,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2022-01-31 22:59:14,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:59:14,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2022-01-31 22:59:14,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6218, Invalid=6438, Unknown=0, NotChecked=0, Total=12656 [2022-01-31 22:59:14,665 INFO L87 Difference]: Start difference. First operand 559 states and 778 transitions. Second operand has 113 states, 113 states have (on average 3.938053097345133) internal successors, (445), 112 states have internal predecessors, (445), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:15,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:59:15,908 INFO L93 Difference]: Finished difference Result 575 states and 799 transitions. [2022-01-31 22:59:15,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-01-31 22:59:15,909 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 3.938053097345133) internal successors, (445), 112 states have internal predecessors, (445), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 448 [2022-01-31 22:59:15,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:59:15,910 INFO L225 Difference]: With dead ends: 575 [2022-01-31 22:59:15,910 INFO L226 Difference]: Without dead ends: 568 [2022-01-31 22:59:15,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=6218, Invalid=6438, Unknown=0, NotChecked=0, Total=12656 [2022-01-31 22:59:15,911 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2028 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2028 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:59:15,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2028 Valid, 619 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:59:15,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2022-01-31 22:59:15,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 564. [2022-01-31 22:59:15,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 560 states have (on average 1.3964285714285714) internal successors, (782), 560 states have internal predecessors, (782), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:15,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 785 transitions. [2022-01-31 22:59:15,918 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 785 transitions. Word has length 448 [2022-01-31 22:59:15,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:59:15,918 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 785 transitions. [2022-01-31 22:59:15,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 3.938053097345133) internal successors, (445), 112 states have internal predecessors, (445), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:15,918 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 785 transitions. [2022-01-31 22:59:15,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2022-01-31 22:59:15,920 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:59:15,920 INFO L514 BasicCegarLoop]: trace histogram [110, 110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:59:15,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-01-31 22:59:15,920 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:59:15,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:59:15,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1573697926, now seen corresponding path program 109 times [2022-01-31 22:59:15,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:59:15,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546061260] [2022-01-31 22:59:15,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:59:15,924 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:59:15,924 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:59:15,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:59:15,931 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:59:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:19,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:59:19,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:19,987 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 22:59:19,987 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:59:19,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546061260] [2022-01-31 22:59:19,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [546061260] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:59:19,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:59:19,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [114] imperfect sequences [] total 114 [2022-01-31 22:59:19,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120197863] [2022-01-31 22:59:19,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:59:19,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2022-01-31 22:59:19,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:59:19,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2022-01-31 22:59:19,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6330, Invalid=6552, Unknown=0, NotChecked=0, Total=12882 [2022-01-31 22:59:19,991 INFO L87 Difference]: Start difference. First operand 564 states and 785 transitions. Second operand has 114 states, 114 states have (on average 3.93859649122807) internal successors, (449), 113 states have internal predecessors, (449), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:21,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:59:21,335 INFO L93 Difference]: Finished difference Result 580 states and 806 transitions. [2022-01-31 22:59:21,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-01-31 22:59:21,335 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 3.93859649122807) internal successors, (449), 113 states have internal predecessors, (449), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 452 [2022-01-31 22:59:21,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:59:21,336 INFO L225 Difference]: With dead ends: 580 [2022-01-31 22:59:21,336 INFO L226 Difference]: Without dead ends: 573 [2022-01-31 22:59:21,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=6330, Invalid=6552, Unknown=0, NotChecked=0, Total=12882 [2022-01-31 22:59:21,337 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2526 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2526 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:59:21,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2526 Valid, 600 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:59:21,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2022-01-31 22:59:21,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 569. [2022-01-31 22:59:21,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 565 states have (on average 1.3964601769911504) internal successors, (789), 565 states have internal predecessors, (789), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:21,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 792 transitions. [2022-01-31 22:59:21,347 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 792 transitions. Word has length 452 [2022-01-31 22:59:21,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:59:21,347 INFO L470 AbstractCegarLoop]: Abstraction has 569 states and 792 transitions. [2022-01-31 22:59:21,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 3.93859649122807) internal successors, (449), 113 states have internal predecessors, (449), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:21,347 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 792 transitions. [2022-01-31 22:59:21,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2022-01-31 22:59:21,349 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:59:21,350 INFO L514 BasicCegarLoop]: trace histogram [111, 111, 111, 111, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:59:21,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-01-31 22:59:21,350 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:59:21,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:59:21,350 INFO L85 PathProgramCache]: Analyzing trace with hash 152069441, now seen corresponding path program 110 times [2022-01-31 22:59:21,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:59:21,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975331617] [2022-01-31 22:59:21,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:59:21,356 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:59:21,356 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:59:21,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:59:21,364 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:59:21,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:25,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:59:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:25,474 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 22:59:25,474 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:59:25,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975331617] [2022-01-31 22:59:25,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1975331617] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:59:25,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:59:25,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [115] imperfect sequences [] total 115 [2022-01-31 22:59:25,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364569262] [2022-01-31 22:59:25,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:59:25,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2022-01-31 22:59:25,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:59:25,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2022-01-31 22:59:25,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6443, Invalid=6667, Unknown=0, NotChecked=0, Total=13110 [2022-01-31 22:59:25,477 INFO L87 Difference]: Start difference. First operand 569 states and 792 transitions. Second operand has 115 states, 115 states have (on average 3.9391304347826086) internal successors, (453), 114 states have internal predecessors, (453), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:26,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:59:26,940 INFO L93 Difference]: Finished difference Result 585 states and 813 transitions. [2022-01-31 22:59:26,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-01-31 22:59:26,940 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 3.9391304347826086) internal successors, (453), 114 states have internal predecessors, (453), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 456 [2022-01-31 22:59:26,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:59:26,942 INFO L225 Difference]: With dead ends: 585 [2022-01-31 22:59:26,942 INFO L226 Difference]: Without dead ends: 578 [2022-01-31 22:59:26,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=6443, Invalid=6667, Unknown=0, NotChecked=0, Total=13110 [2022-01-31 22:59:26,943 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1992 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1992 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:59:26,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1992 Valid, 641 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:59:26,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2022-01-31 22:59:26,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 574. [2022-01-31 22:59:26,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 570 states have (on average 1.3964912280701753) internal successors, (796), 570 states have internal predecessors, (796), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:26,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 799 transitions. [2022-01-31 22:59:26,950 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 799 transitions. Word has length 456 [2022-01-31 22:59:26,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:59:26,950 INFO L470 AbstractCegarLoop]: Abstraction has 574 states and 799 transitions. [2022-01-31 22:59:26,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 115 states have (on average 3.9391304347826086) internal successors, (453), 114 states have internal predecessors, (453), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:26,950 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 799 transitions. [2022-01-31 22:59:26,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2022-01-31 22:59:26,952 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:59:26,952 INFO L514 BasicCegarLoop]: trace histogram [112, 112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:59:26,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-01-31 22:59:26,952 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:59:26,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:59:26,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1797441672, now seen corresponding path program 111 times [2022-01-31 22:59:26,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:59:26,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964684694] [2022-01-31 22:59:26,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:59:26,954 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:59:26,954 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:59:26,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:59:26,961 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:59:27,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:31,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:59:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:31,093 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 22:59:31,093 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:59:31,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964684694] [2022-01-31 22:59:31,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1964684694] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:59:31,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:59:31,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [116] imperfect sequences [] total 116 [2022-01-31 22:59:31,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671018721] [2022-01-31 22:59:31,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:59:31,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2022-01-31 22:59:31,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:59:31,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2022-01-31 22:59:31,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6557, Invalid=6783, Unknown=0, NotChecked=0, Total=13340 [2022-01-31 22:59:31,095 INFO L87 Difference]: Start difference. First operand 574 states and 799 transitions. Second operand has 116 states, 116 states have (on average 3.939655172413793) internal successors, (457), 115 states have internal predecessors, (457), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:32,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:59:32,485 INFO L93 Difference]: Finished difference Result 590 states and 820 transitions. [2022-01-31 22:59:32,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-01-31 22:59:32,485 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 3.939655172413793) internal successors, (457), 115 states have internal predecessors, (457), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 460 [2022-01-31 22:59:32,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:59:32,486 INFO L225 Difference]: With dead ends: 590 [2022-01-31 22:59:32,486 INFO L226 Difference]: Without dead ends: 583 [2022-01-31 22:59:32,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=6557, Invalid=6783, Unknown=0, NotChecked=0, Total=13340 [2022-01-31 22:59:32,487 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1857 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1857 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:59:32,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1857 Valid, 694 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:59:32,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2022-01-31 22:59:32,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 579. [2022-01-31 22:59:32,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 575 states have (on average 1.3965217391304348) internal successors, (803), 575 states have internal predecessors, (803), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:32,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 806 transitions. [2022-01-31 22:59:32,494 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 806 transitions. Word has length 460 [2022-01-31 22:59:32,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:59:32,494 INFO L470 AbstractCegarLoop]: Abstraction has 579 states and 806 transitions. [2022-01-31 22:59:32,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 116 states have (on average 3.939655172413793) internal successors, (457), 115 states have internal predecessors, (457), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:32,495 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 806 transitions. [2022-01-31 22:59:32,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2022-01-31 22:59:32,496 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:59:32,496 INFO L514 BasicCegarLoop]: trace histogram [113, 113, 113, 113, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:59:32,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-01-31 22:59:32,497 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:59:32,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:59:32,497 INFO L85 PathProgramCache]: Analyzing trace with hash -348901297, now seen corresponding path program 112 times [2022-01-31 22:59:32,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:59:32,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851244966] [2022-01-31 22:59:32,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:59:32,499 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:59:32,499 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:59:32,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:59:32,505 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:59:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:36,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:59:36,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:36,701 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 22:59:36,701 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:59:36,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851244966] [2022-01-31 22:59:36,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [851244966] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:59:36,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:59:36,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [117] imperfect sequences [] total 117 [2022-01-31 22:59:36,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664507064] [2022-01-31 22:59:36,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:59:36,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2022-01-31 22:59:36,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:59:36,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2022-01-31 22:59:36,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6672, Invalid=6900, Unknown=0, NotChecked=0, Total=13572 [2022-01-31 22:59:36,704 INFO L87 Difference]: Start difference. First operand 579 states and 806 transitions. Second operand has 117 states, 117 states have (on average 3.9401709401709404) internal successors, (461), 116 states have internal predecessors, (461), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:38,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:59:38,173 INFO L93 Difference]: Finished difference Result 595 states and 827 transitions. [2022-01-31 22:59:38,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-01-31 22:59:38,174 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 117 states have (on average 3.9401709401709404) internal successors, (461), 116 states have internal predecessors, (461), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 464 [2022-01-31 22:59:38,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:59:38,175 INFO L225 Difference]: With dead ends: 595 [2022-01-31 22:59:38,175 INFO L226 Difference]: Without dead ends: 588 [2022-01-31 22:59:38,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=6672, Invalid=6900, Unknown=0, NotChecked=0, Total=13572 [2022-01-31 22:59:38,175 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1890 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1890 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:59:38,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1890 Valid, 639 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:59:38,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2022-01-31 22:59:38,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 584. [2022-01-31 22:59:38,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 580 states have (on average 1.396551724137931) internal successors, (810), 580 states have internal predecessors, (810), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:38,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 813 transitions. [2022-01-31 22:59:38,182 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 813 transitions. Word has length 464 [2022-01-31 22:59:38,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:59:38,183 INFO L470 AbstractCegarLoop]: Abstraction has 584 states and 813 transitions. [2022-01-31 22:59:38,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 117 states have (on average 3.9401709401709404) internal successors, (461), 116 states have internal predecessors, (461), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:38,183 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 813 transitions. [2022-01-31 22:59:38,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2022-01-31 22:59:38,185 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:59:38,185 INFO L514 BasicCegarLoop]: trace histogram [114, 114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:59:38,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-01-31 22:59:38,185 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:59:38,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:59:38,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1322361706, now seen corresponding path program 113 times [2022-01-31 22:59:38,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:59:38,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269633852] [2022-01-31 22:59:38,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:59:38,187 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:59:38,187 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:59:38,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:59:38,194 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:59:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:42,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:59:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:42,487 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 22:59:42,488 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:59:42,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269633852] [2022-01-31 22:59:42,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [269633852] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:59:42,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:59:42,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [118] imperfect sequences [] total 118 [2022-01-31 22:59:42,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835509390] [2022-01-31 22:59:42,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:59:42,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2022-01-31 22:59:42,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:59:42,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2022-01-31 22:59:42,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6788, Invalid=7018, Unknown=0, NotChecked=0, Total=13806 [2022-01-31 22:59:42,491 INFO L87 Difference]: Start difference. First operand 584 states and 813 transitions. Second operand has 118 states, 118 states have (on average 3.940677966101695) internal successors, (465), 117 states have internal predecessors, (465), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:44,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:59:44,082 INFO L93 Difference]: Finished difference Result 600 states and 834 transitions. [2022-01-31 22:59:44,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-01-31 22:59:44,082 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 118 states have (on average 3.940677966101695) internal successors, (465), 117 states have internal predecessors, (465), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 468 [2022-01-31 22:59:44,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:59:44,083 INFO L225 Difference]: With dead ends: 600 [2022-01-31 22:59:44,083 INFO L226 Difference]: Without dead ends: 593 [2022-01-31 22:59:44,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=6788, Invalid=7018, Unknown=0, NotChecked=0, Total=13806 [2022-01-31 22:59:44,084 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1773 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1773 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:59:44,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1773 Valid, 680 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:59:44,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-01-31 22:59:44,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 589. [2022-01-31 22:59:44,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 585 states have (on average 1.3965811965811965) internal successors, (817), 585 states have internal predecessors, (817), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:44,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 820 transitions. [2022-01-31 22:59:44,091 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 820 transitions. Word has length 468 [2022-01-31 22:59:44,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:59:44,091 INFO L470 AbstractCegarLoop]: Abstraction has 589 states and 820 transitions. [2022-01-31 22:59:44,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 118 states have (on average 3.940677966101695) internal successors, (465), 117 states have internal predecessors, (465), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:44,091 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 820 transitions. [2022-01-31 22:59:44,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2022-01-31 22:59:44,093 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:59:44,093 INFO L514 BasicCegarLoop]: trace histogram [115, 115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:59:44,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-01-31 22:59:44,093 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:59:44,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:59:44,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1511722333, now seen corresponding path program 114 times [2022-01-31 22:59:44,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:59:44,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389753223] [2022-01-31 22:59:44,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:59:44,096 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:59:44,096 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:59:44,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:59:44,103 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:59:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:48,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:59:48,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:48,552 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 22:59:48,553 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:59:48,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389753223] [2022-01-31 22:59:48,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [389753223] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:59:48,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:59:48,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [119] imperfect sequences [] total 119 [2022-01-31 22:59:48,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186169023] [2022-01-31 22:59:48,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:59:48,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2022-01-31 22:59:48,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:59:48,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2022-01-31 22:59:48,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6905, Invalid=7137, Unknown=0, NotChecked=0, Total=14042 [2022-01-31 22:59:48,556 INFO L87 Difference]: Start difference. First operand 589 states and 820 transitions. Second operand has 119 states, 119 states have (on average 3.9411764705882355) internal successors, (469), 118 states have internal predecessors, (469), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:50,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:59:50,010 INFO L93 Difference]: Finished difference Result 605 states and 841 transitions. [2022-01-31 22:59:50,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-01-31 22:59:50,010 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 3.9411764705882355) internal successors, (469), 118 states have internal predecessors, (469), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 472 [2022-01-31 22:59:50,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:59:50,011 INFO L225 Difference]: With dead ends: 605 [2022-01-31 22:59:50,011 INFO L226 Difference]: Without dead ends: 598 [2022-01-31 22:59:50,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=6905, Invalid=7137, Unknown=0, NotChecked=0, Total=14042 [2022-01-31 22:59:50,012 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1893 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1893 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:59:50,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1893 Valid, 637 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:59:50,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2022-01-31 22:59:50,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 594. [2022-01-31 22:59:50,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 590 states have (on average 1.3966101694915254) internal successors, (824), 590 states have internal predecessors, (824), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:50,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 827 transitions. [2022-01-31 22:59:50,021 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 827 transitions. Word has length 472 [2022-01-31 22:59:50,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:59:50,022 INFO L470 AbstractCegarLoop]: Abstraction has 594 states and 827 transitions. [2022-01-31 22:59:50,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 3.9411764705882355) internal successors, (469), 118 states have internal predecessors, (469), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:50,022 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 827 transitions. [2022-01-31 22:59:50,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2022-01-31 22:59:50,024 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:59:50,024 INFO L514 BasicCegarLoop]: trace histogram [116, 116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:59:50,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-01-31 22:59:50,024 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:59:50,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:59:50,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1747190436, now seen corresponding path program 115 times [2022-01-31 22:59:50,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:59:50,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180645217] [2022-01-31 22:59:50,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:59:50,028 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:59:50,028 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:59:50,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:59:50,036 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:59:50,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:54,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:59:54,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:54,503 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 22:59:54,503 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:59:54,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180645217] [2022-01-31 22:59:54,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1180645217] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:59:54,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:59:54,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [120] imperfect sequences [] total 120 [2022-01-31 22:59:54,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525993812] [2022-01-31 22:59:54,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:59:54,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2022-01-31 22:59:54,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:59:54,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2022-01-31 22:59:54,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7023, Invalid=7257, Unknown=0, NotChecked=0, Total=14280 [2022-01-31 22:59:54,505 INFO L87 Difference]: Start difference. First operand 594 states and 827 transitions. Second operand has 120 states, 120 states have (on average 3.941666666666667) internal successors, (473), 119 states have internal predecessors, (473), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:56,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:59:56,051 INFO L93 Difference]: Finished difference Result 610 states and 848 transitions. [2022-01-31 22:59:56,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-01-31 22:59:56,051 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 120 states have (on average 3.941666666666667) internal successors, (473), 119 states have internal predecessors, (473), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 476 [2022-01-31 22:59:56,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:59:56,052 INFO L225 Difference]: With dead ends: 610 [2022-01-31 22:59:56,053 INFO L226 Difference]: Without dead ends: 603 [2022-01-31 22:59:56,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=7023, Invalid=7257, Unknown=0, NotChecked=0, Total=14280 [2022-01-31 22:59:56,053 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1818 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1818 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:59:56,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1818 Valid, 690 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:59:56,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2022-01-31 22:59:56,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 599. [2022-01-31 22:59:56,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 595 states have (on average 1.3966386554621848) internal successors, (831), 595 states have internal predecessors, (831), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:56,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 834 transitions. [2022-01-31 22:59:56,060 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 834 transitions. Word has length 476 [2022-01-31 22:59:56,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:59:56,061 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 834 transitions. [2022-01-31 22:59:56,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 120 states have (on average 3.941666666666667) internal successors, (473), 119 states have internal predecessors, (473), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:56,061 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 834 transitions. [2022-01-31 22:59:56,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2022-01-31 22:59:56,062 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:59:56,063 INFO L514 BasicCegarLoop]: trace histogram [117, 117, 117, 117, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:59:56,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-01-31 22:59:56,063 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:59:56,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:59:56,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1298989973, now seen corresponding path program 116 times [2022-01-31 22:59:56,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:59:56,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299576813] [2022-01-31 22:59:56,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:59:56,065 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:59:56,065 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:59:56,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:59:56,072 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:59:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:00,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:00:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:00,567 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 23:00:00,567 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:00:00,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299576813] [2022-01-31 23:00:00,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [299576813] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:00:00,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:00:00,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [121] imperfect sequences [] total 121 [2022-01-31 23:00:00,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713036732] [2022-01-31 23:00:00,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:00:00,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2022-01-31 23:00:00,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:00:00,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2022-01-31 23:00:00,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7142, Invalid=7378, Unknown=0, NotChecked=0, Total=14520 [2022-01-31 23:00:00,570 INFO L87 Difference]: Start difference. First operand 599 states and 834 transitions. Second operand has 121 states, 121 states have (on average 3.9421487603305785) internal successors, (477), 120 states have internal predecessors, (477), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:02,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:00:02,200 INFO L93 Difference]: Finished difference Result 615 states and 855 transitions. [2022-01-31 23:00:02,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2022-01-31 23:00:02,200 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 121 states have (on average 3.9421487603305785) internal successors, (477), 120 states have internal predecessors, (477), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 480 [2022-01-31 23:00:02,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:00:02,202 INFO L225 Difference]: With dead ends: 615 [2022-01-31 23:00:02,202 INFO L226 Difference]: Without dead ends: 608 [2022-01-31 23:00:02,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=7142, Invalid=7378, Unknown=0, NotChecked=0, Total=14520 [2022-01-31 23:00:02,202 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1872 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1872 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:00:02,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1872 Valid, 671 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:00:02,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-01-31 23:00:02,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 604. [2022-01-31 23:00:02,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 600 states have (on average 1.3966666666666667) internal successors, (838), 600 states have internal predecessors, (838), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:02,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 841 transitions. [2022-01-31 23:00:02,211 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 841 transitions. Word has length 480 [2022-01-31 23:00:02,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:00:02,212 INFO L470 AbstractCegarLoop]: Abstraction has 604 states and 841 transitions. [2022-01-31 23:00:02,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 121 states have (on average 3.9421487603305785) internal successors, (477), 120 states have internal predecessors, (477), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:02,212 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 841 transitions. [2022-01-31 23:00:02,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2022-01-31 23:00:02,214 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:00:02,214 INFO L514 BasicCegarLoop]: trace histogram [118, 118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:00:02,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-01-31 23:00:02,214 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:00:02,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:00:02,214 INFO L85 PathProgramCache]: Analyzing trace with hash -707675470, now seen corresponding path program 117 times [2022-01-31 23:00:02,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:00:02,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212897811] [2022-01-31 23:00:02,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:00:02,218 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:00:02,218 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:00:02,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:00:02,225 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:00:02,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:06,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:00:06,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:06,910 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 23:00:06,910 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:00:06,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212897811] [2022-01-31 23:00:06,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [212897811] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:00:06,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:00:06,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [122] imperfect sequences [] total 122 [2022-01-31 23:00:06,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776518659] [2022-01-31 23:00:06,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:00:06,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2022-01-31 23:00:06,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:00:06,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2022-01-31 23:00:06,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7262, Invalid=7500, Unknown=0, NotChecked=0, Total=14762 [2022-01-31 23:00:06,913 INFO L87 Difference]: Start difference. First operand 604 states and 841 transitions. Second operand has 122 states, 122 states have (on average 3.942622950819672) internal successors, (481), 121 states have internal predecessors, (481), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:08,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:00:08,561 INFO L93 Difference]: Finished difference Result 620 states and 862 transitions. [2022-01-31 23:00:08,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-01-31 23:00:08,561 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 122 states have (on average 3.942622950819672) internal successors, (481), 121 states have internal predecessors, (481), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 484 [2022-01-31 23:00:08,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:00:08,562 INFO L225 Difference]: With dead ends: 620 [2022-01-31 23:00:08,562 INFO L226 Difference]: Without dead ends: 613 [2022-01-31 23:00:08,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=7262, Invalid=7500, Unknown=0, NotChecked=0, Total=14762 [2022-01-31 23:00:08,563 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2196 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2196 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:00:08,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2196 Valid, 652 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:00:08,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2022-01-31 23:00:08,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 609. [2022-01-31 23:00:08,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 605 states have (on average 1.396694214876033) internal successors, (845), 605 states have internal predecessors, (845), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:08,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 848 transitions. [2022-01-31 23:00:08,570 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 848 transitions. Word has length 484 [2022-01-31 23:00:08,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:00:08,571 INFO L470 AbstractCegarLoop]: Abstraction has 609 states and 848 transitions. [2022-01-31 23:00:08,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 122 states have (on average 3.942622950819672) internal successors, (481), 121 states have internal predecessors, (481), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:08,571 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 848 transitions. [2022-01-31 23:00:08,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-01-31 23:00:08,573 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:00:08,573 INFO L514 BasicCegarLoop]: trace histogram [119, 119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:00:08,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-01-31 23:00:08,573 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:00:08,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:00:08,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1553334919, now seen corresponding path program 118 times [2022-01-31 23:00:08,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:00:08,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066836269] [2022-01-31 23:00:08,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:00:08,576 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:00:08,576 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:00:08,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:00:08,583 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:00:08,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:13,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:00:13,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:13,288 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 23:00:13,288 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:00:13,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066836269] [2022-01-31 23:00:13,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1066836269] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:00:13,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:00:13,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [123] imperfect sequences [] total 123 [2022-01-31 23:00:13,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742840465] [2022-01-31 23:00:13,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:00:13,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2022-01-31 23:00:13,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:00:13,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2022-01-31 23:00:13,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7383, Invalid=7623, Unknown=0, NotChecked=0, Total=15006 [2022-01-31 23:00:13,293 INFO L87 Difference]: Start difference. First operand 609 states and 848 transitions. Second operand has 123 states, 123 states have (on average 3.9430894308943087) internal successors, (485), 122 states have internal predecessors, (485), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:14,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:00:14,973 INFO L93 Difference]: Finished difference Result 625 states and 869 transitions. [2022-01-31 23:00:14,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2022-01-31 23:00:14,974 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 3.9430894308943087) internal successors, (485), 122 states have internal predecessors, (485), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 488 [2022-01-31 23:00:14,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:00:14,975 INFO L225 Difference]: With dead ends: 625 [2022-01-31 23:00:14,975 INFO L226 Difference]: Without dead ends: 618 [2022-01-31 23:00:14,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=7383, Invalid=7623, Unknown=0, NotChecked=0, Total=15006 [2022-01-31 23:00:14,976 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2367 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2367 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:00:14,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2367 Valid, 645 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:00:14,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2022-01-31 23:00:14,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 614. [2022-01-31 23:00:14,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 610 states have (on average 1.3967213114754098) internal successors, (852), 610 states have internal predecessors, (852), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:14,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 855 transitions. [2022-01-31 23:00:14,984 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 855 transitions. Word has length 488 [2022-01-31 23:00:14,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:00:14,984 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 855 transitions. [2022-01-31 23:00:14,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 3.9430894308943087) internal successors, (485), 122 states have internal predecessors, (485), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:14,984 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 855 transitions. [2022-01-31 23:00:14,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2022-01-31 23:00:14,987 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:00:14,987 INFO L514 BasicCegarLoop]: trace histogram [120, 120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:00:14,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-01-31 23:00:14,987 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:00:14,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:00:14,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1845132096, now seen corresponding path program 119 times [2022-01-31 23:00:14,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:00:14,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032183817] [2022-01-31 23:00:14,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:00:14,992 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:00:14,992 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:00:14,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:00:15,000 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:00:15,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:19,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:00:19,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:19,833 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 23:00:19,833 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:00:19,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2032183817] [2022-01-31 23:00:19,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2032183817] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:00:19,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:00:19,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [124] imperfect sequences [] total 124 [2022-01-31 23:00:19,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159695168] [2022-01-31 23:00:19,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:00:19,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2022-01-31 23:00:19,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:00:19,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2022-01-31 23:00:19,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7505, Invalid=7747, Unknown=0, NotChecked=0, Total=15252 [2022-01-31 23:00:19,837 INFO L87 Difference]: Start difference. First operand 614 states and 855 transitions. Second operand has 124 states, 124 states have (on average 3.943548387096774) internal successors, (489), 123 states have internal predecessors, (489), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:21,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:00:21,627 INFO L93 Difference]: Finished difference Result 630 states and 876 transitions. [2022-01-31 23:00:21,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-01-31 23:00:21,627 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 124 states have (on average 3.943548387096774) internal successors, (489), 123 states have internal predecessors, (489), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 492 [2022-01-31 23:00:21,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:00:21,628 INFO L225 Difference]: With dead ends: 630 [2022-01-31 23:00:21,628 INFO L226 Difference]: Without dead ends: 623 [2022-01-31 23:00:21,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=7505, Invalid=7747, Unknown=0, NotChecked=0, Total=15252 [2022-01-31 23:00:21,629 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1674 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1674 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:00:21,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1674 Valid, 734 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:00:21,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2022-01-31 23:00:21,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 619. [2022-01-31 23:00:21,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 615 states have (on average 1.3967479674796748) internal successors, (859), 615 states have internal predecessors, (859), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:21,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 862 transitions. [2022-01-31 23:00:21,636 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 862 transitions. Word has length 492 [2022-01-31 23:00:21,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:00:21,637 INFO L470 AbstractCegarLoop]: Abstraction has 619 states and 862 transitions. [2022-01-31 23:00:21,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 124 states have (on average 3.943548387096774) internal successors, (489), 123 states have internal predecessors, (489), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:21,637 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 862 transitions. [2022-01-31 23:00:21,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2022-01-31 23:00:21,639 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:00:21,639 INFO L514 BasicCegarLoop]: trace histogram [121, 121, 121, 121, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:00:21,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-01-31 23:00:21,639 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:00:21,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:00:21,639 INFO L85 PathProgramCache]: Analyzing trace with hash 762187911, now seen corresponding path program 120 times [2022-01-31 23:00:21,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:00:21,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408420367] [2022-01-31 23:00:21,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:00:21,642 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:00:21,642 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:00:21,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:00:21,648 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:00:21,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:26,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:00:26,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:26,445 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 23:00:26,445 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:00:26,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408420367] [2022-01-31 23:00:26,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1408420367] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:00:26,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:00:26,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [125] imperfect sequences [] total 125 [2022-01-31 23:00:26,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436285015] [2022-01-31 23:00:26,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:00:26,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2022-01-31 23:00:26,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:00:26,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2022-01-31 23:00:26,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7628, Invalid=7872, Unknown=0, NotChecked=0, Total=15500 [2022-01-31 23:00:26,448 INFO L87 Difference]: Start difference. First operand 619 states and 862 transitions. Second operand has 125 states, 125 states have (on average 3.944) internal successors, (493), 124 states have internal predecessors, (493), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:28,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:00:28,180 INFO L93 Difference]: Finished difference Result 635 states and 883 transitions. [2022-01-31 23:00:28,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-01-31 23:00:28,180 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 125 states have (on average 3.944) internal successors, (493), 124 states have internal predecessors, (493), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 496 [2022-01-31 23:00:28,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:00:28,181 INFO L225 Difference]: With dead ends: 635 [2022-01-31 23:00:28,181 INFO L226 Difference]: Without dead ends: 628 [2022-01-31 23:00:28,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=7628, Invalid=7872, Unknown=0, NotChecked=0, Total=15500 [2022-01-31 23:00:28,182 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1731 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1731 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:00:28,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1731 Valid, 739 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:00:28,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-01-31 23:00:28,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 624. [2022-01-31 23:00:28,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 620 states have (on average 1.396774193548387) internal successors, (866), 620 states have internal predecessors, (866), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:28,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 869 transitions. [2022-01-31 23:00:28,189 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 869 transitions. Word has length 496 [2022-01-31 23:00:28,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:00:28,189 INFO L470 AbstractCegarLoop]: Abstraction has 624 states and 869 transitions. [2022-01-31 23:00:28,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 125 states have (on average 3.944) internal successors, (493), 124 states have internal predecessors, (493), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:28,190 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 869 transitions. [2022-01-31 23:00:28,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2022-01-31 23:00:28,191 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:00:28,191 INFO L514 BasicCegarLoop]: trace histogram [122, 122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:00:28,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-01-31 23:00:28,192 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:00:28,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:00:28,192 INFO L85 PathProgramCache]: Analyzing trace with hash -2037554994, now seen corresponding path program 121 times [2022-01-31 23:00:28,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:00:28,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325687767] [2022-01-31 23:00:28,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:00:28,194 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:00:28,194 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:00:28,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:00:28,202 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:00:28,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:33,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:00:33,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:33,061 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 23:00:33,061 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:00:33,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [325687767] [2022-01-31 23:00:33,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [325687767] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:00:33,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:00:33,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [126] imperfect sequences [] total 126 [2022-01-31 23:00:33,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140264472] [2022-01-31 23:00:33,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:00:33,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2022-01-31 23:00:33,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:00:33,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2022-01-31 23:00:33,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7752, Invalid=7998, Unknown=0, NotChecked=0, Total=15750 [2022-01-31 23:00:33,064 INFO L87 Difference]: Start difference. First operand 624 states and 869 transitions. Second operand has 126 states, 126 states have (on average 3.9444444444444446) internal successors, (497), 125 states have internal predecessors, (497), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:34,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:00:34,880 INFO L93 Difference]: Finished difference Result 640 states and 890 transitions. [2022-01-31 23:00:34,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-01-31 23:00:34,880 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 126 states have (on average 3.9444444444444446) internal successors, (497), 125 states have internal predecessors, (497), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 500 [2022-01-31 23:00:34,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:00:34,881 INFO L225 Difference]: With dead ends: 640 [2022-01-31 23:00:34,881 INFO L226 Difference]: Without dead ends: 633 [2022-01-31 23:00:34,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=7752, Invalid=7998, Unknown=0, NotChecked=0, Total=15750 [2022-01-31 23:00:34,882 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2025 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2025 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:00:34,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2025 Valid, 660 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:00:34,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-01-31 23:00:34,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 629. [2022-01-31 23:00:34,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 625 states have (on average 1.3968) internal successors, (873), 625 states have internal predecessors, (873), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:34,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 876 transitions. [2022-01-31 23:00:34,889 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 876 transitions. Word has length 500 [2022-01-31 23:00:34,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:00:34,890 INFO L470 AbstractCegarLoop]: Abstraction has 629 states and 876 transitions. [2022-01-31 23:00:34,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 126 states have (on average 3.9444444444444446) internal successors, (497), 125 states have internal predecessors, (497), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:34,890 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 876 transitions. [2022-01-31 23:00:34,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2022-01-31 23:00:34,892 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:00:34,892 INFO L514 BasicCegarLoop]: trace histogram [123, 123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:00:34,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-01-31 23:00:34,892 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:00:34,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:00:34,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1553123947, now seen corresponding path program 122 times [2022-01-31 23:00:34,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:00:34,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137129949] [2022-01-31 23:00:34,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:00:34,894 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:00:34,894 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:00:34,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:00:34,901 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:00:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:39,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:00:39,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:39,859 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 23:00:39,859 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:00:39,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137129949] [2022-01-31 23:00:39,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2137129949] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:00:39,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:00:39,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [127] imperfect sequences [] total 127 [2022-01-31 23:00:39,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798087546] [2022-01-31 23:00:39,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:00:39,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 127 states [2022-01-31 23:00:39,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:00:39,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2022-01-31 23:00:39,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7877, Invalid=8125, Unknown=0, NotChecked=0, Total=16002 [2022-01-31 23:00:39,862 INFO L87 Difference]: Start difference. First operand 629 states and 876 transitions. Second operand has 127 states, 127 states have (on average 3.9448818897637796) internal successors, (501), 126 states have internal predecessors, (501), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:41,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:00:41,776 INFO L93 Difference]: Finished difference Result 645 states and 897 transitions. [2022-01-31 23:00:41,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-01-31 23:00:41,777 INFO L78 Accepts]: Start accepts. Automaton has has 127 states, 127 states have (on average 3.9448818897637796) internal successors, (501), 126 states have internal predecessors, (501), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 504 [2022-01-31 23:00:41,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:00:41,778 INFO L225 Difference]: With dead ends: 645 [2022-01-31 23:00:41,778 INFO L226 Difference]: Without dead ends: 638 [2022-01-31 23:00:41,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=7877, Invalid=8125, Unknown=0, NotChecked=0, Total=16002 [2022-01-31 23:00:41,779 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2007 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2007 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:00:41,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2007 Valid, 653 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:00:41,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2022-01-31 23:00:41,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 634. [2022-01-31 23:00:41,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 630 states have (on average 1.3968253968253967) internal successors, (880), 630 states have internal predecessors, (880), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:41,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 883 transitions. [2022-01-31 23:00:41,787 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 883 transitions. Word has length 504 [2022-01-31 23:00:41,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:00:41,787 INFO L470 AbstractCegarLoop]: Abstraction has 634 states and 883 transitions. [2022-01-31 23:00:41,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 127 states, 127 states have (on average 3.9448818897637796) internal successors, (501), 126 states have internal predecessors, (501), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:41,787 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 883 transitions. [2022-01-31 23:00:41,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2022-01-31 23:00:41,789 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:00:41,789 INFO L514 BasicCegarLoop]: trace histogram [124, 124, 124, 124, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:00:41,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2022-01-31 23:00:41,789 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:00:41,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:00:41,790 INFO L85 PathProgramCache]: Analyzing trace with hash -281588004, now seen corresponding path program 123 times [2022-01-31 23:00:41,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:00:41,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32646452] [2022-01-31 23:00:41,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:00:41,792 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:00:41,792 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:00:41,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:00:41,800 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:00:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:46,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:00:46,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:46,855 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 23:00:46,855 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:00:46,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32646452] [2022-01-31 23:00:46,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [32646452] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:00:46,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:00:46,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [128] imperfect sequences [] total 128 [2022-01-31 23:00:46,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766396922] [2022-01-31 23:00:46,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:00:46,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2022-01-31 23:00:46,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:00:46,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2022-01-31 23:00:46,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8003, Invalid=8253, Unknown=0, NotChecked=0, Total=16256 [2022-01-31 23:00:46,859 INFO L87 Difference]: Start difference. First operand 634 states and 883 transitions. Second operand has 128 states, 128 states have (on average 3.9453125) internal successors, (505), 127 states have internal predecessors, (505), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:48,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:00:48,910 INFO L93 Difference]: Finished difference Result 650 states and 904 transitions. [2022-01-31 23:00:48,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-01-31 23:00:48,914 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 3.9453125) internal successors, (505), 127 states have internal predecessors, (505), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 508 [2022-01-31 23:00:48,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:00:48,915 INFO L225 Difference]: With dead ends: 650 [2022-01-31 23:00:48,915 INFO L226 Difference]: Without dead ends: 643 [2022-01-31 23:00:48,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=8003, Invalid=8253, Unknown=0, NotChecked=0, Total=16256 [2022-01-31 23:00:48,916 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1992 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1992 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:00:48,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1992 Valid, 730 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:00:48,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2022-01-31 23:00:48,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 639. [2022-01-31 23:00:48,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 635 states have (on average 1.3968503937007875) internal successors, (887), 635 states have internal predecessors, (887), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:48,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 890 transitions. [2022-01-31 23:00:48,924 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 890 transitions. Word has length 508 [2022-01-31 23:00:48,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:00:48,924 INFO L470 AbstractCegarLoop]: Abstraction has 639 states and 890 transitions. [2022-01-31 23:00:48,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 3.9453125) internal successors, (505), 127 states have internal predecessors, (505), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:48,925 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 890 transitions. [2022-01-31 23:00:48,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2022-01-31 23:00:48,927 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:00:48,927 INFO L514 BasicCegarLoop]: trace histogram [125, 125, 125, 125, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:00:48,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-01-31 23:00:48,927 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:00:48,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:00:48,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1439339357, now seen corresponding path program 124 times [2022-01-31 23:00:48,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:00:48,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623740641] [2022-01-31 23:00:48,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:00:48,929 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:00:48,929 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:00:48,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:00:48,937 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:00:49,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:54,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:00:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:54,016 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 23:00:54,016 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:00:54,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623740641] [2022-01-31 23:00:54,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [623740641] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:00:54,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:00:54,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [129] imperfect sequences [] total 129 [2022-01-31 23:00:54,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133096961] [2022-01-31 23:00:54,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:00:54,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2022-01-31 23:00:54,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:00:54,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2022-01-31 23:00:54,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8130, Invalid=8382, Unknown=0, NotChecked=0, Total=16512 [2022-01-31 23:00:54,020 INFO L87 Difference]: Start difference. First operand 639 states and 890 transitions. Second operand has 129 states, 129 states have (on average 3.945736434108527) internal successors, (509), 128 states have internal predecessors, (509), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:56,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:00:56,030 INFO L93 Difference]: Finished difference Result 655 states and 911 transitions. [2022-01-31 23:00:56,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2022-01-31 23:00:56,031 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 129 states have (on average 3.945736434108527) internal successors, (509), 128 states have internal predecessors, (509), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 512 [2022-01-31 23:00:56,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:00:56,032 INFO L225 Difference]: With dead ends: 655 [2022-01-31 23:00:56,032 INFO L226 Difference]: Without dead ends: 648 [2022-01-31 23:00:56,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=8130, Invalid=8382, Unknown=0, NotChecked=0, Total=16512 [2022-01-31 23:00:56,033 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2214 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2214 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:00:56,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2214 Valid, 687 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:00:56,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2022-01-31 23:00:56,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 644. [2022-01-31 23:00:56,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 640 states have (on average 1.396875) internal successors, (894), 640 states have internal predecessors, (894), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:56,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 897 transitions. [2022-01-31 23:00:56,045 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 897 transitions. Word has length 512 [2022-01-31 23:00:56,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:00:56,045 INFO L470 AbstractCegarLoop]: Abstraction has 644 states and 897 transitions. [2022-01-31 23:00:56,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 129 states have (on average 3.945736434108527) internal successors, (509), 128 states have internal predecessors, (509), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:56,045 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 897 transitions. [2022-01-31 23:00:56,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2022-01-31 23:00:56,048 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:00:56,048 INFO L514 BasicCegarLoop]: trace histogram [126, 126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:00:56,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2022-01-31 23:00:56,048 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:00:56,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:00:56,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1506889450, now seen corresponding path program 125 times [2022-01-31 23:00:56,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:00:56,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421396370] [2022-01-31 23:00:56,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:00:56,052 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:00:56,052 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:00:56,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:00:56,067 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:00:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:01,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:01:01,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:01,278 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 23:01:01,278 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:01:01,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421396370] [2022-01-31 23:01:01,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1421396370] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:01:01,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:01:01,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [130] imperfect sequences [] total 130 [2022-01-31 23:01:01,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528775839] [2022-01-31 23:01:01,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:01:01,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2022-01-31 23:01:01,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:01:01,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2022-01-31 23:01:01,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8258, Invalid=8512, Unknown=0, NotChecked=0, Total=16770 [2022-01-31 23:01:01,282 INFO L87 Difference]: Start difference. First operand 644 states and 897 transitions. Second operand has 130 states, 130 states have (on average 3.9461538461538463) internal successors, (513), 129 states have internal predecessors, (513), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:03,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:01:03,292 INFO L93 Difference]: Finished difference Result 660 states and 918 transitions. [2022-01-31 23:01:03,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-01-31 23:01:03,293 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 3.9461538461538463) internal successors, (513), 129 states have internal predecessors, (513), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 516 [2022-01-31 23:01:03,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:01:03,294 INFO L225 Difference]: With dead ends: 660 [2022-01-31 23:01:03,294 INFO L226 Difference]: Without dead ends: 653 [2022-01-31 23:01:03,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=8258, Invalid=8512, Unknown=0, NotChecked=0, Total=16770 [2022-01-31 23:01:03,295 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2070 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2070 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:01:03,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2070 Valid, 728 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:01:03,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2022-01-31 23:01:03,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 649. [2022-01-31 23:01:03,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 645 states have (on average 1.3968992248062015) internal successors, (901), 645 states have internal predecessors, (901), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:03,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 904 transitions. [2022-01-31 23:01:03,307 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 904 transitions. Word has length 516 [2022-01-31 23:01:03,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:01:03,307 INFO L470 AbstractCegarLoop]: Abstraction has 649 states and 904 transitions. [2022-01-31 23:01:03,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 3.9461538461538463) internal successors, (513), 129 states have internal predecessors, (513), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:03,308 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 904 transitions. [2022-01-31 23:01:03,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2022-01-31 23:01:03,310 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:01:03,310 INFO L514 BasicCegarLoop]: trace histogram [127, 127, 127, 127, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:01:03,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2022-01-31 23:01:03,310 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:01:03,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:01:03,311 INFO L85 PathProgramCache]: Analyzing trace with hash 949269937, now seen corresponding path program 126 times [2022-01-31 23:01:03,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:01:03,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121493604] [2022-01-31 23:01:03,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:01:03,316 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:01:03,316 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:01:03,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:01:03,326 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:01:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:08,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:01:08,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:08,631 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 23:01:08,631 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:01:08,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121493604] [2022-01-31 23:01:08,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2121493604] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:01:08,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:01:08,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [131] imperfect sequences [] total 131 [2022-01-31 23:01:08,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204812089] [2022-01-31 23:01:08,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:01:08,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2022-01-31 23:01:08,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:01:08,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2022-01-31 23:01:08,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8387, Invalid=8643, Unknown=0, NotChecked=0, Total=17030 [2022-01-31 23:01:08,634 INFO L87 Difference]: Start difference. First operand 649 states and 904 transitions. Second operand has 131 states, 131 states have (on average 3.946564885496183) internal successors, (517), 130 states have internal predecessors, (517), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:10,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:01:10,616 INFO L93 Difference]: Finished difference Result 665 states and 925 transitions. [2022-01-31 23:01:10,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2022-01-31 23:01:10,616 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 3.946564885496183) internal successors, (517), 130 states have internal predecessors, (517), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 520 [2022-01-31 23:01:10,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:01:10,618 INFO L225 Difference]: With dead ends: 665 [2022-01-31 23:01:10,618 INFO L226 Difference]: Without dead ends: 658 [2022-01-31 23:01:10,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=8387, Invalid=8643, Unknown=0, NotChecked=0, Total=17030 [2022-01-31 23:01:10,619 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2169 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2169 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:01:10,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2169 Valid, 697 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:01:10,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2022-01-31 23:01:10,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 654. [2022-01-31 23:01:10,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 650 states have (on average 1.396923076923077) internal successors, (908), 650 states have internal predecessors, (908), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:10,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 911 transitions. [2022-01-31 23:01:10,626 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 911 transitions. Word has length 520 [2022-01-31 23:01:10,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:01:10,627 INFO L470 AbstractCegarLoop]: Abstraction has 654 states and 911 transitions. [2022-01-31 23:01:10,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 3.946564885496183) internal successors, (517), 130 states have internal predecessors, (517), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:10,627 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 911 transitions. [2022-01-31 23:01:10,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2022-01-31 23:01:10,629 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:01:10,629 INFO L514 BasicCegarLoop]: trace histogram [128, 128, 128, 128, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:01:10,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2022-01-31 23:01:10,629 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:01:10,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:01:10,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1507237640, now seen corresponding path program 127 times [2022-01-31 23:01:10,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:01:10,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373795227] [2022-01-31 23:01:10,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:01:10,636 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:01:10,636 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:01:10,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:01:10,643 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:01:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:15,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:01:15,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:15,995 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 23:01:15,995 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:01:15,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [373795227] [2022-01-31 23:01:15,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [373795227] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:01:15,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:01:15,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [132] imperfect sequences [] total 132 [2022-01-31 23:01:15,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61374993] [2022-01-31 23:01:15,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:01:15,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2022-01-31 23:01:15,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:01:15,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2022-01-31 23:01:15,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8517, Invalid=8775, Unknown=0, NotChecked=0, Total=17292 [2022-01-31 23:01:15,999 INFO L87 Difference]: Start difference. First operand 654 states and 911 transitions. Second operand has 132 states, 132 states have (on average 3.946969696969697) internal successors, (521), 131 states have internal predecessors, (521), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:18,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:01:18,123 INFO L93 Difference]: Finished difference Result 670 states and 932 transitions. [2022-01-31 23:01:18,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-01-31 23:01:18,124 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 132 states have (on average 3.946969696969697) internal successors, (521), 131 states have internal predecessors, (521), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 524 [2022-01-31 23:01:18,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:01:18,125 INFO L225 Difference]: With dead ends: 670 [2022-01-31 23:01:18,125 INFO L226 Difference]: Without dead ends: 663 [2022-01-31 23:01:18,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=8517, Invalid=8775, Unknown=0, NotChecked=0, Total=17292 [2022-01-31 23:01:18,126 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2046 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2046 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:01:18,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2046 Valid, 726 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:01:18,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2022-01-31 23:01:18,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 659. [2022-01-31 23:01:18,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 655 states have (on average 1.3969465648854962) internal successors, (915), 655 states have internal predecessors, (915), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:18,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 918 transitions. [2022-01-31 23:01:18,133 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 918 transitions. Word has length 524 [2022-01-31 23:01:18,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:01:18,133 INFO L470 AbstractCegarLoop]: Abstraction has 659 states and 918 transitions. [2022-01-31 23:01:18,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 132 states have (on average 3.946969696969697) internal successors, (521), 131 states have internal predecessors, (521), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:18,133 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 918 transitions. [2022-01-31 23:01:18,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2022-01-31 23:01:18,135 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:01:18,135 INFO L514 BasicCegarLoop]: trace histogram [129, 129, 129, 129, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:01:18,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2022-01-31 23:01:18,136 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:01:18,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:01:18,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1755770689, now seen corresponding path program 128 times [2022-01-31 23:01:18,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:01:18,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720255359] [2022-01-31 23:01:18,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:01:18,140 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:01:18,140 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:01:18,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:01:18,150 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:01:18,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:23,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:01:23,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:23,571 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 23:01:23,571 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:01:23,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720255359] [2022-01-31 23:01:23,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1720255359] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:01:23,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:01:23,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [133] imperfect sequences [] total 133 [2022-01-31 23:01:23,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922012465] [2022-01-31 23:01:23,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:01:23,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 133 states [2022-01-31 23:01:23,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:01:23,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2022-01-31 23:01:23,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8648, Invalid=8908, Unknown=0, NotChecked=0, Total=17556 [2022-01-31 23:01:23,576 INFO L87 Difference]: Start difference. First operand 659 states and 918 transitions. Second operand has 133 states, 133 states have (on average 3.9473684210526314) internal successors, (525), 132 states have internal predecessors, (525), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:25,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:01:25,792 INFO L93 Difference]: Finished difference Result 675 states and 939 transitions. [2022-01-31 23:01:25,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-01-31 23:01:25,793 INFO L78 Accepts]: Start accepts. Automaton has has 133 states, 133 states have (on average 3.9473684210526314) internal successors, (525), 132 states have internal predecessors, (525), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 528 [2022-01-31 23:01:25,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:01:25,794 INFO L225 Difference]: With dead ends: 675 [2022-01-31 23:01:25,794 INFO L226 Difference]: Without dead ends: 668 [2022-01-31 23:01:25,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=8648, Invalid=8908, Unknown=0, NotChecked=0, Total=17556 [2022-01-31 23:01:25,795 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1842 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1842 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:01:25,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1842 Valid, 791 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:01:25,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2022-01-31 23:01:25,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 664. [2022-01-31 23:01:25,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 660 states have (on average 1.396969696969697) internal successors, (922), 660 states have internal predecessors, (922), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:25,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 925 transitions. [2022-01-31 23:01:25,803 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 925 transitions. Word has length 528 [2022-01-31 23:01:25,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:01:25,803 INFO L470 AbstractCegarLoop]: Abstraction has 664 states and 925 transitions. [2022-01-31 23:01:25,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 133 states, 133 states have (on average 3.9473684210526314) internal successors, (525), 132 states have internal predecessors, (525), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:25,803 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 925 transitions. [2022-01-31 23:01:25,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2022-01-31 23:01:25,805 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:01:25,805 INFO L514 BasicCegarLoop]: trace histogram [130, 130, 130, 130, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:01:25,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2022-01-31 23:01:25,805 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:01:25,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:01:25,806 INFO L85 PathProgramCache]: Analyzing trace with hash 101549318, now seen corresponding path program 129 times [2022-01-31 23:01:25,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:01:25,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537813933] [2022-01-31 23:01:25,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:01:25,807 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:01:25,807 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:01:25,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:01:25,815 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:01:25,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:31,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:01:31,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:31,361 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 23:01:31,361 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:01:31,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537813933] [2022-01-31 23:01:31,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1537813933] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:01:31,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:01:31,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [134] imperfect sequences [] total 134 [2022-01-31 23:01:31,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896115903] [2022-01-31 23:01:31,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:01:31,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2022-01-31 23:01:31,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:01:31,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2022-01-31 23:01:31,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8780, Invalid=9042, Unknown=0, NotChecked=0, Total=17822 [2022-01-31 23:01:31,365 INFO L87 Difference]: Start difference. First operand 664 states and 925 transitions. Second operand has 134 states, 134 states have (on average 3.9477611940298507) internal successors, (529), 133 states have internal predecessors, (529), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:33,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:01:33,739 INFO L93 Difference]: Finished difference Result 680 states and 946 transitions. [2022-01-31 23:01:33,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2022-01-31 23:01:33,739 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 134 states have (on average 3.9477611940298507) internal successors, (529), 133 states have internal predecessors, (529), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 532 [2022-01-31 23:01:33,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:01:33,740 INFO L225 Difference]: With dead ends: 680 [2022-01-31 23:01:33,740 INFO L226 Difference]: Without dead ends: 673 [2022-01-31 23:01:33,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=8780, Invalid=9042, Unknown=0, NotChecked=0, Total=17822 [2022-01-31 23:01:33,741 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1920 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1920 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:01:33,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1920 Valid, 772 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:01:33,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2022-01-31 23:01:33,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 669. [2022-01-31 23:01:33,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 665 states have (on average 1.3969924812030075) internal successors, (929), 665 states have internal predecessors, (929), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:33,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 932 transitions. [2022-01-31 23:01:33,749 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 932 transitions. Word has length 532 [2022-01-31 23:01:33,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:01:33,749 INFO L470 AbstractCegarLoop]: Abstraction has 669 states and 932 transitions. [2022-01-31 23:01:33,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 134 states have (on average 3.9477611940298507) internal successors, (529), 133 states have internal predecessors, (529), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:33,749 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 932 transitions. [2022-01-31 23:01:33,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2022-01-31 23:01:33,751 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:01:33,751 INFO L514 BasicCegarLoop]: trace histogram [131, 131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:01:33,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2022-01-31 23:01:33,752 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:01:33,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:01:33,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1632665037, now seen corresponding path program 130 times [2022-01-31 23:01:33,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:01:33,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646688975] [2022-01-31 23:01:33,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:01:33,754 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:01:33,754 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:01:33,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:01:33,762 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:01:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:39,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:01:39,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:39,334 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 23:01:39,334 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:01:39,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646688975] [2022-01-31 23:01:39,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1646688975] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:01:39,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:01:39,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [135] imperfect sequences [] total 135 [2022-01-31 23:01:39,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12893696] [2022-01-31 23:01:39,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:01:39,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 135 states [2022-01-31 23:01:39,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:01:39,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2022-01-31 23:01:39,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8913, Invalid=9177, Unknown=0, NotChecked=0, Total=18090 [2022-01-31 23:01:39,339 INFO L87 Difference]: Start difference. First operand 669 states and 932 transitions. Second operand has 135 states, 135 states have (on average 3.948148148148148) internal successors, (533), 134 states have internal predecessors, (533), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:41,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:01:41,590 INFO L93 Difference]: Finished difference Result 685 states and 953 transitions. [2022-01-31 23:01:41,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-01-31 23:01:41,591 INFO L78 Accepts]: Start accepts. Automaton has has 135 states, 135 states have (on average 3.948148148148148) internal successors, (533), 134 states have internal predecessors, (533), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 536 [2022-01-31 23:01:41,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:01:41,593 INFO L225 Difference]: With dead ends: 685 [2022-01-31 23:01:41,593 INFO L226 Difference]: Without dead ends: 678 [2022-01-31 23:01:41,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=8913, Invalid=9177, Unknown=0, NotChecked=0, Total=18090 [2022-01-31 23:01:41,594 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2046 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2046 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:01:41,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2046 Valid, 765 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:01:41,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2022-01-31 23:01:41,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 674. [2022-01-31 23:01:41,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 670 states have (on average 1.3970149253731343) internal successors, (936), 670 states have internal predecessors, (936), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:41,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 939 transitions. [2022-01-31 23:01:41,605 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 939 transitions. Word has length 536 [2022-01-31 23:01:41,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:01:41,605 INFO L470 AbstractCegarLoop]: Abstraction has 674 states and 939 transitions. [2022-01-31 23:01:41,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 135 states, 135 states have (on average 3.948148148148148) internal successors, (533), 134 states have internal predecessors, (533), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:41,605 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 939 transitions. [2022-01-31 23:01:41,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2022-01-31 23:01:41,608 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:01:41,608 INFO L514 BasicCegarLoop]: trace histogram [132, 132, 132, 132, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:01:41,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2022-01-31 23:01:41,608 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:01:41,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:01:41,609 INFO L85 PathProgramCache]: Analyzing trace with hash -45368556, now seen corresponding path program 131 times [2022-01-31 23:01:41,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:01:41,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453604511] [2022-01-31 23:01:41,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:01:41,611 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:01:41,611 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:01:41,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:01:41,622 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:01:41,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:47,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:01:47,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:47,366 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 23:01:47,366 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:01:47,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453604511] [2022-01-31 23:01:47,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [453604511] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:01:47,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:01:47,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [136] imperfect sequences [] total 136 [2022-01-31 23:01:47,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754209414] [2022-01-31 23:01:47,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:01:47,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 136 states [2022-01-31 23:01:47,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:01:47,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2022-01-31 23:01:47,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9047, Invalid=9313, Unknown=0, NotChecked=0, Total=18360 [2022-01-31 23:01:47,369 INFO L87 Difference]: Start difference. First operand 674 states and 939 transitions. Second operand has 136 states, 136 states have (on average 3.948529411764706) internal successors, (537), 135 states have internal predecessors, (537), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:49,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:01:49,791 INFO L93 Difference]: Finished difference Result 690 states and 960 transitions. [2022-01-31 23:01:49,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-01-31 23:01:49,791 INFO L78 Accepts]: Start accepts. Automaton has has 136 states, 136 states have (on average 3.948529411764706) internal successors, (537), 135 states have internal predecessors, (537), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 540 [2022-01-31 23:01:49,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:01:49,793 INFO L225 Difference]: With dead ends: 690 [2022-01-31 23:01:49,793 INFO L226 Difference]: Without dead ends: 683 [2022-01-31 23:01:49,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=9047, Invalid=9313, Unknown=0, NotChecked=0, Total=18360 [2022-01-31 23:01:49,794 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2472 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2472 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:01:49,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2472 Valid, 734 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:01:49,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-01-31 23:01:49,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 679. [2022-01-31 23:01:49,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 675 states have (on average 1.397037037037037) internal successors, (943), 675 states have internal predecessors, (943), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:49,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 946 transitions. [2022-01-31 23:01:49,802 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 946 transitions. Word has length 540 [2022-01-31 23:01:49,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:01:49,802 INFO L470 AbstractCegarLoop]: Abstraction has 679 states and 946 transitions. [2022-01-31 23:01:49,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 136 states, 136 states have (on average 3.948529411764706) internal successors, (537), 135 states have internal predecessors, (537), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:49,802 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 946 transitions. [2022-01-31 23:01:49,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2022-01-31 23:01:49,805 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:01:49,805 INFO L514 BasicCegarLoop]: trace histogram [133, 133, 133, 133, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:01:49,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2022-01-31 23:01:49,805 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:01:49,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:01:49,805 INFO L85 PathProgramCache]: Analyzing trace with hash -2092368677, now seen corresponding path program 132 times [2022-01-31 23:01:49,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:01:49,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249733521] [2022-01-31 23:01:49,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:01:49,808 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:01:49,808 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:01:49,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:01:49,817 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:01:49,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:55,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:01:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:55,553 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 23:01:55,553 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:01:55,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249733521] [2022-01-31 23:01:55,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1249733521] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:01:55,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:01:55,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [137] imperfect sequences [] total 137 [2022-01-31 23:01:55,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745197668] [2022-01-31 23:01:55,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:01:55,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 137 states [2022-01-31 23:01:55,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:01:55,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2022-01-31 23:01:55,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9182, Invalid=9450, Unknown=0, NotChecked=0, Total=18632 [2022-01-31 23:01:55,558 INFO L87 Difference]: Start difference. First operand 679 states and 946 transitions. Second operand has 137 states, 137 states have (on average 3.948905109489051) internal successors, (541), 136 states have internal predecessors, (541), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:58,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:01:58,020 INFO L93 Difference]: Finished difference Result 695 states and 967 transitions. [2022-01-31 23:01:58,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-01-31 23:01:58,020 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 137 states have (on average 3.948905109489051) internal successors, (541), 136 states have internal predecessors, (541), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 544 [2022-01-31 23:01:58,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:01:58,021 INFO L225 Difference]: With dead ends: 695 [2022-01-31 23:01:58,021 INFO L226 Difference]: Without dead ends: 688 [2022-01-31 23:01:58,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=9182, Invalid=9450, Unknown=0, NotChecked=0, Total=18632 [2022-01-31 23:01:58,022 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2565 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2565 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:01:58,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2565 Valid, 739 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:01:58,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2022-01-31 23:01:58,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 684. [2022-01-31 23:01:58,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 680 states have (on average 1.3970588235294117) internal successors, (950), 680 states have internal predecessors, (950), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:58,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 953 transitions. [2022-01-31 23:01:58,033 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 953 transitions. Word has length 544 [2022-01-31 23:01:58,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:01:58,034 INFO L470 AbstractCegarLoop]: Abstraction has 684 states and 953 transitions. [2022-01-31 23:01:58,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 137 states, 137 states have (on average 3.948905109489051) internal successors, (541), 136 states have internal predecessors, (541), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:58,034 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 953 transitions. [2022-01-31 23:01:58,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2022-01-31 23:01:58,037 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:01:58,037 INFO L514 BasicCegarLoop]: trace histogram [134, 134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:01:58,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2022-01-31 23:01:58,037 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:01:58,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:01:58,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1639056162, now seen corresponding path program 133 times [2022-01-31 23:01:58,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:01:58,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792300649] [2022-01-31 23:01:58,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:01:58,044 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:01:58,044 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:01:58,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:01:58,057 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:01:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:03,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:02:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:03,884 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 23:02:03,884 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:02:03,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792300649] [2022-01-31 23:02:03,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [792300649] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:02:03,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:02:03,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [138] imperfect sequences [] total 138 [2022-01-31 23:02:03,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521099340] [2022-01-31 23:02:03,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:02:03,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 138 states [2022-01-31 23:02:03,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:02:03,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2022-01-31 23:02:03,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9318, Invalid=9588, Unknown=0, NotChecked=0, Total=18906 [2022-01-31 23:02:03,888 INFO L87 Difference]: Start difference. First operand 684 states and 953 transitions. Second operand has 138 states, 138 states have (on average 3.949275362318841) internal successors, (545), 137 states have internal predecessors, (545), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:02:06,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:02:06,379 INFO L93 Difference]: Finished difference Result 700 states and 974 transitions. [2022-01-31 23:02:06,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-01-31 23:02:06,379 INFO L78 Accepts]: Start accepts. Automaton has has 138 states, 138 states have (on average 3.949275362318841) internal successors, (545), 137 states have internal predecessors, (545), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 548 [2022-01-31 23:02:06,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:02:06,380 INFO L225 Difference]: With dead ends: 700 [2022-01-31 23:02:06,380 INFO L226 Difference]: Without dead ends: 693 [2022-01-31 23:02:06,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=9318, Invalid=9588, Unknown=0, NotChecked=0, Total=18906 [2022-01-31 23:02:06,381 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2151 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2151 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:02:06,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2151 Valid, 780 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:02:06,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2022-01-31 23:02:06,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 689. [2022-01-31 23:02:06,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 685 states have (on average 1.397080291970803) internal successors, (957), 685 states have internal predecessors, (957), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:02:06,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 960 transitions. [2022-01-31 23:02:06,390 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 960 transitions. Word has length 548 [2022-01-31 23:02:06,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:02:06,390 INFO L470 AbstractCegarLoop]: Abstraction has 689 states and 960 transitions. [2022-01-31 23:02:06,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 138 states, 138 states have (on average 3.949275362318841) internal successors, (545), 137 states have internal predecessors, (545), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:02:06,390 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 960 transitions. [2022-01-31 23:02:06,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2022-01-31 23:02:06,392 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:02:06,392 INFO L514 BasicCegarLoop]: trace histogram [135, 135, 135, 135, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:02:06,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2022-01-31 23:02:06,393 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:02:06,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:02:06,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1007717865, now seen corresponding path program 134 times [2022-01-31 23:02:06,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:02:06,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029948783] [2022-01-31 23:02:06,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:02:06,400 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:02:06,401 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:02:06,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:02:06,414 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:02:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:12,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:02:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:12,332 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 23:02:12,332 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:02:12,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029948783] [2022-01-31 23:02:12,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1029948783] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:02:12,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:02:12,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [139] imperfect sequences [] total 139 [2022-01-31 23:02:12,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529450123] [2022-01-31 23:02:12,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:02:12,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 139 states [2022-01-31 23:02:12,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:02:12,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2022-01-31 23:02:12,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9455, Invalid=9727, Unknown=0, NotChecked=0, Total=19182 [2022-01-31 23:02:12,336 INFO L87 Difference]: Start difference. First operand 689 states and 960 transitions. Second operand has 139 states, 139 states have (on average 3.949640287769784) internal successors, (549), 138 states have internal predecessors, (549), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:02:14,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:02:14,834 INFO L93 Difference]: Finished difference Result 705 states and 981 transitions. [2022-01-31 23:02:14,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2022-01-31 23:02:14,834 INFO L78 Accepts]: Start accepts. Automaton has has 139 states, 139 states have (on average 3.949640287769784) internal successors, (549), 138 states have internal predecessors, (549), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 552 [2022-01-31 23:02:14,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:02:14,835 INFO L225 Difference]: With dead ends: 705 [2022-01-31 23:02:14,835 INFO L226 Difference]: Without dead ends: 698 [2022-01-31 23:02:14,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=9455, Invalid=9727, Unknown=0, NotChecked=0, Total=19182 [2022-01-31 23:02:14,836 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2583 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2583 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:02:14,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2583 Valid, 737 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:02:14,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2022-01-31 23:02:14,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 694. [2022-01-31 23:02:14,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 690 states have (on average 1.3971014492753624) internal successors, (964), 690 states have internal predecessors, (964), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:02:14,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 967 transitions. [2022-01-31 23:02:14,845 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 967 transitions. Word has length 552 [2022-01-31 23:02:14,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:02:14,845 INFO L470 AbstractCegarLoop]: Abstraction has 694 states and 967 transitions. [2022-01-31 23:02:14,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 139 states, 139 states have (on average 3.949640287769784) internal successors, (549), 138 states have internal predecessors, (549), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:02:14,845 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 967 transitions. [2022-01-31 23:02:14,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2022-01-31 23:02:14,848 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:02:14,848 INFO L514 BasicCegarLoop]: trace histogram [136, 136, 136, 136, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:02:14,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2022-01-31 23:02:14,848 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:02:14,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:02:14,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1527668016, now seen corresponding path program 135 times [2022-01-31 23:02:14,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:02:14,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021640974] [2022-01-31 23:02:14,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:02:14,851 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:02:14,851 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:02:14,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:02:14,860 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:02:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:20,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:02:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:20,892 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 23:02:20,892 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:02:20,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021640974] [2022-01-31 23:02:20,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1021640974] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:02:20,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:02:20,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [140] imperfect sequences [] total 140 [2022-01-31 23:02:20,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176917921] [2022-01-31 23:02:20,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:02:20,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 140 states [2022-01-31 23:02:20,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:02:20,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2022-01-31 23:02:20,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9593, Invalid=9867, Unknown=0, NotChecked=0, Total=19460 [2022-01-31 23:02:20,895 INFO L87 Difference]: Start difference. First operand 694 states and 967 transitions. Second operand has 140 states, 140 states have (on average 3.95) internal successors, (553), 139 states have internal predecessors, (553), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:02:23,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:02:23,597 INFO L93 Difference]: Finished difference Result 710 states and 988 transitions. [2022-01-31 23:02:23,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-01-31 23:02:23,598 INFO L78 Accepts]: Start accepts. Automaton has has 140 states, 140 states have (on average 3.95) internal successors, (553), 139 states have internal predecessors, (553), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 556 [2022-01-31 23:02:23,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:02:23,599 INFO L225 Difference]: With dead ends: 710 [2022-01-31 23:02:23,599 INFO L226 Difference]: Without dead ends: 703 [2022-01-31 23:02:23,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=9593, Invalid=9867, Unknown=0, NotChecked=0, Total=19460 [2022-01-31 23:02:23,601 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2184 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2184 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:02:23,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2184 Valid, 790 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:02:23,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2022-01-31 23:02:23,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 699. [2022-01-31 23:02:23,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 695 states have (on average 1.3971223021582735) internal successors, (971), 695 states have internal predecessors, (971), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:02:23,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 974 transitions. [2022-01-31 23:02:23,613 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 974 transitions. Word has length 556 [2022-01-31 23:02:23,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:02:23,613 INFO L470 AbstractCegarLoop]: Abstraction has 699 states and 974 transitions. [2022-01-31 23:02:23,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 140 states, 140 states have (on average 3.95) internal successors, (553), 139 states have internal predecessors, (553), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:02:23,614 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 974 transitions. [2022-01-31 23:02:23,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2022-01-31 23:02:23,629 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:02:23,629 INFO L514 BasicCegarLoop]: trace histogram [137, 137, 137, 137, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:02:23,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2022-01-31 23:02:23,629 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:02:23,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:02:23,630 INFO L85 PathProgramCache]: Analyzing trace with hash 477442295, now seen corresponding path program 136 times [2022-01-31 23:02:23,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:02:23,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411294871] [2022-01-31 23:02:23,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:02:23,636 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:02:23,636 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:02:23,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:02:23,650 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:02:23,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:29,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:02:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:29,741 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 23:02:29,741 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:02:29,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411294871] [2022-01-31 23:02:29,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1411294871] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:02:29,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:02:29,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [141] imperfect sequences [] total 141 [2022-01-31 23:02:29,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399228683] [2022-01-31 23:02:29,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:02:29,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 141 states [2022-01-31 23:02:29,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:02:29,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2022-01-31 23:02:29,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9732, Invalid=10008, Unknown=0, NotChecked=0, Total=19740 [2022-01-31 23:02:29,745 INFO L87 Difference]: Start difference. First operand 699 states and 974 transitions. Second operand has 141 states, 141 states have (on average 3.950354609929078) internal successors, (557), 140 states have internal predecessors, (557), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:02:32,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:02:32,591 INFO L93 Difference]: Finished difference Result 715 states and 995 transitions. [2022-01-31 23:02:32,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-01-31 23:02:32,591 INFO L78 Accepts]: Start accepts. Automaton has has 141 states, 141 states have (on average 3.950354609929078) internal successors, (557), 140 states have internal predecessors, (557), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 560 [2022-01-31 23:02:32,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:02:32,592 INFO L225 Difference]: With dead ends: 715 [2022-01-31 23:02:32,593 INFO L226 Difference]: Without dead ends: 708 [2022-01-31 23:02:32,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=9732, Invalid=10008, Unknown=0, NotChecked=0, Total=19740 [2022-01-31 23:02:32,594 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2271 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2271 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:02:32,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2271 Valid, 771 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:02:32,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2022-01-31 23:02:32,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 704. [2022-01-31 23:02:32,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 700 states have (on average 1.3971428571428572) internal successors, (978), 700 states have internal predecessors, (978), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:02:32,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 981 transitions. [2022-01-31 23:02:32,603 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 981 transitions. Word has length 560 [2022-01-31 23:02:32,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:02:32,603 INFO L470 AbstractCegarLoop]: Abstraction has 704 states and 981 transitions. [2022-01-31 23:02:32,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 141 states, 141 states have (on average 3.950354609929078) internal successors, (557), 140 states have internal predecessors, (557), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:02:32,603 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 981 transitions. [2022-01-31 23:02:32,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 565 [2022-01-31 23:02:32,605 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:02:32,606 INFO L514 BasicCegarLoop]: trace histogram [138, 138, 138, 138, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:02:32,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2022-01-31 23:02:32,606 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:02:32,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:02:32,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1664010558, now seen corresponding path program 137 times [2022-01-31 23:02:32,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:02:32,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123306427] [2022-01-31 23:02:32,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:02:32,608 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:02:32,608 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:02:32,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:02:32,618 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:02:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:38,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:02:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:38,838 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 23:02:38,838 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:02:38,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123306427] [2022-01-31 23:02:38,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1123306427] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:02:38,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:02:38,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [142] imperfect sequences [] total 142 [2022-01-31 23:02:38,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511376984] [2022-01-31 23:02:38,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:02:38,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 142 states [2022-01-31 23:02:38,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:02:38,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2022-01-31 23:02:38,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9872, Invalid=10150, Unknown=0, NotChecked=0, Total=20022 [2022-01-31 23:02:38,842 INFO L87 Difference]: Start difference. First operand 704 states and 981 transitions. Second operand has 142 states, 142 states have (on average 3.9507042253521125) internal successors, (561), 141 states have internal predecessors, (561), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:02:41,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:02:41,660 INFO L93 Difference]: Finished difference Result 720 states and 1002 transitions. [2022-01-31 23:02:41,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2022-01-31 23:02:41,661 INFO L78 Accepts]: Start accepts. Automaton has has 142 states, 142 states have (on average 3.9507042253521125) internal successors, (561), 141 states have internal predecessors, (561), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 564 [2022-01-31 23:02:41,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:02:41,662 INFO L225 Difference]: With dead ends: 720 [2022-01-31 23:02:41,662 INFO L226 Difference]: Without dead ends: 713 [2022-01-31 23:02:41,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=9872, Invalid=10150, Unknown=0, NotChecked=0, Total=20022 [2022-01-31 23:02:41,663 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2232 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2232 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:02:41,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2232 Valid, 776 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:02:41,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2022-01-31 23:02:41,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 709. [2022-01-31 23:02:41,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 705 states have (on average 1.3971631205673758) internal successors, (985), 705 states have internal predecessors, (985), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:02:41,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 988 transitions. [2022-01-31 23:02:41,675 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 988 transitions. Word has length 564 [2022-01-31 23:02:41,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:02:41,676 INFO L470 AbstractCegarLoop]: Abstraction has 709 states and 988 transitions. [2022-01-31 23:02:41,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 142 states, 142 states have (on average 3.9507042253521125) internal successors, (561), 141 states have internal predecessors, (561), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:02:41,676 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 988 transitions. [2022-01-31 23:02:41,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2022-01-31 23:02:41,679 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:02:41,679 INFO L514 BasicCegarLoop]: trace histogram [139, 139, 139, 139, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:02:41,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2022-01-31 23:02:41,679 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:02:41,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:02:41,680 INFO L85 PathProgramCache]: Analyzing trace with hash 121955845, now seen corresponding path program 138 times [2022-01-31 23:02:41,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:02:41,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775934645] [2022-01-31 23:02:41,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:02:41,682 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:02:41,682 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:02:41,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:02:41,696 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:02:41,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:48,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:02:48,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:48,136 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 23:02:48,137 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:02:48,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775934645] [2022-01-31 23:02:48,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1775934645] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:02:48,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:02:48,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [143] imperfect sequences [] total 143 [2022-01-31 23:02:48,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150325117] [2022-01-31 23:02:48,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:02:48,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 143 states [2022-01-31 23:02:48,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:02:48,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2022-01-31 23:02:48,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10013, Invalid=10293, Unknown=0, NotChecked=0, Total=20306 [2022-01-31 23:02:48,142 INFO L87 Difference]: Start difference. First operand 709 states and 988 transitions. Second operand has 143 states, 143 states have (on average 3.9510489510489513) internal successors, (565), 142 states have internal predecessors, (565), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:02:51,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:02:51,125 INFO L93 Difference]: Finished difference Result 725 states and 1009 transitions. [2022-01-31 23:02:51,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-01-31 23:02:51,125 INFO L78 Accepts]: Start accepts. Automaton has has 143 states, 143 states have (on average 3.9510489510489513) internal successors, (565), 142 states have internal predecessors, (565), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 568 [2022-01-31 23:02:51,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:02:51,126 INFO L225 Difference]: With dead ends: 725 [2022-01-31 23:02:51,126 INFO L226 Difference]: Without dead ends: 718 [2022-01-31 23:02:51,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=10013, Invalid=10293, Unknown=0, NotChecked=0, Total=20306 [2022-01-31 23:02:51,127 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2097 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2097 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:02:51,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2097 Valid, 841 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:02:51,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2022-01-31 23:02:51,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 714. [2022-01-31 23:02:51,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 710 states have (on average 1.3971830985915492) internal successors, (992), 710 states have internal predecessors, (992), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:02:51,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 995 transitions. [2022-01-31 23:02:51,136 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 995 transitions. Word has length 568 [2022-01-31 23:02:51,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:02:51,136 INFO L470 AbstractCegarLoop]: Abstraction has 714 states and 995 transitions. [2022-01-31 23:02:51,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 143 states, 143 states have (on average 3.9510489510489513) internal successors, (565), 142 states have internal predecessors, (565), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:02:51,136 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 995 transitions. [2022-01-31 23:02:51,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2022-01-31 23:02:51,139 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:02:51,139 INFO L514 BasicCegarLoop]: trace histogram [140, 140, 140, 140, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:02:51,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2022-01-31 23:02:51,139 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:02:51,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:02:51,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1172391756, now seen corresponding path program 139 times [2022-01-31 23:02:51,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:02:51,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [9198110] [2022-01-31 23:02:51,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:02:51,141 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:02:51,141 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:02:51,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:02:51,151 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:02:51,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:57,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:02:57,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:57,468 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 23:02:57,468 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:02:57,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [9198110] [2022-01-31 23:02:57,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [9198110] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:02:57,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:02:57,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [144] imperfect sequences [] total 144 [2022-01-31 23:02:57,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184174863] [2022-01-31 23:02:57,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:02:57,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 144 states [2022-01-31 23:02:57,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:02:57,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2022-01-31 23:02:57,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10155, Invalid=10437, Unknown=0, NotChecked=0, Total=20592 [2022-01-31 23:02:57,473 INFO L87 Difference]: Start difference. First operand 714 states and 995 transitions. Second operand has 144 states, 144 states have (on average 3.951388888888889) internal successors, (569), 143 states have internal predecessors, (569), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:00,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:03:00,327 INFO L93 Difference]: Finished difference Result 730 states and 1016 transitions. [2022-01-31 23:03:00,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-01-31 23:03:00,327 INFO L78 Accepts]: Start accepts. Automaton has has 144 states, 144 states have (on average 3.951388888888889) internal successors, (569), 143 states have internal predecessors, (569), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 572 [2022-01-31 23:03:00,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:03:00,328 INFO L225 Difference]: With dead ends: 730 [2022-01-31 23:03:00,328 INFO L226 Difference]: Without dead ends: 723 [2022-01-31 23:03:00,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=10155, Invalid=10437, Unknown=0, NotChecked=0, Total=20592 [2022-01-31 23:03:00,330 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2247 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2247 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:03:00,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2247 Valid, 798 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:03:00,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2022-01-31 23:03:00,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 719. [2022-01-31 23:03:00,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 715 states have (on average 1.3972027972027972) internal successors, (999), 715 states have internal predecessors, (999), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:00,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 1002 transitions. [2022-01-31 23:03:00,341 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 1002 transitions. Word has length 572 [2022-01-31 23:03:00,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:03:00,342 INFO L470 AbstractCegarLoop]: Abstraction has 719 states and 1002 transitions. [2022-01-31 23:03:00,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 144 states, 144 states have (on average 3.951388888888889) internal successors, (569), 143 states have internal predecessors, (569), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:00,342 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 1002 transitions. [2022-01-31 23:03:00,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2022-01-31 23:03:00,345 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:03:00,345 INFO L514 BasicCegarLoop]: trace histogram [141, 141, 141, 141, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:03:00,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2022-01-31 23:03:00,345 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:03:00,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:03:00,346 INFO L85 PathProgramCache]: Analyzing trace with hash 827174163, now seen corresponding path program 140 times [2022-01-31 23:03:00,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:03:00,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536792961] [2022-01-31 23:03:00,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:03:00,349 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:03:00,349 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:03:00,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:03:00,360 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:03:00,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:03:06,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:03:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:03:06,777 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 23:03:06,777 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:03:06,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536792961] [2022-01-31 23:03:06,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [536792961] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:03:06,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:03:06,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [145] imperfect sequences [] total 145 [2022-01-31 23:03:06,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023846082] [2022-01-31 23:03:06,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:03:06,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 145 states [2022-01-31 23:03:06,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:03:06,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2022-01-31 23:03:06,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10298, Invalid=10582, Unknown=0, NotChecked=0, Total=20880 [2022-01-31 23:03:06,780 INFO L87 Difference]: Start difference. First operand 719 states and 1002 transitions. Second operand has 145 states, 145 states have (on average 3.9517241379310346) internal successors, (573), 144 states have internal predecessors, (573), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:09,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:03:09,471 INFO L93 Difference]: Finished difference Result 735 states and 1023 transitions. [2022-01-31 23:03:09,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2022-01-31 23:03:09,472 INFO L78 Accepts]: Start accepts. Automaton has has 145 states, 145 states have (on average 3.9517241379310346) internal successors, (573), 144 states have internal predecessors, (573), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 576 [2022-01-31 23:03:09,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:03:09,473 INFO L225 Difference]: With dead ends: 735 [2022-01-31 23:03:09,473 INFO L226 Difference]: Without dead ends: 728 [2022-01-31 23:03:09,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=10298, Invalid=10582, Unknown=0, NotChecked=0, Total=20880 [2022-01-31 23:03:09,474 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2307 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2307 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:03:09,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2307 Valid, 827 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:03:09,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-01-31 23:03:09,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 724. [2022-01-31 23:03:09,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 720 states have (on average 1.3972222222222221) internal successors, (1006), 720 states have internal predecessors, (1006), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:09,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1009 transitions. [2022-01-31 23:03:09,482 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1009 transitions. Word has length 576 [2022-01-31 23:03:09,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:03:09,483 INFO L470 AbstractCegarLoop]: Abstraction has 724 states and 1009 transitions. [2022-01-31 23:03:09,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 145 states, 145 states have (on average 3.9517241379310346) internal successors, (573), 144 states have internal predecessors, (573), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:09,483 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1009 transitions. [2022-01-31 23:03:09,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2022-01-31 23:03:09,485 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:03:09,485 INFO L514 BasicCegarLoop]: trace histogram [142, 142, 142, 142, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:03:09,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2022-01-31 23:03:09,486 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:03:09,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:03:09,486 INFO L85 PathProgramCache]: Analyzing trace with hash 552851290, now seen corresponding path program 141 times [2022-01-31 23:03:09,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:03:09,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144295100] [2022-01-31 23:03:09,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:03:09,494 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:03:09,494 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:03:09,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:03:09,505 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:03:09,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:03:15,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:03:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:03:15,823 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 23:03:15,824 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:03:15,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144295100] [2022-01-31 23:03:15,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2144295100] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:03:15,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:03:15,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [146] imperfect sequences [] total 146 [2022-01-31 23:03:15,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479291463] [2022-01-31 23:03:15,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:03:15,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 146 states [2022-01-31 23:03:15,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:03:15,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2022-01-31 23:03:15,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10442, Invalid=10728, Unknown=0, NotChecked=0, Total=21170 [2022-01-31 23:03:15,827 INFO L87 Difference]: Start difference. First operand 724 states and 1009 transitions. Second operand has 146 states, 146 states have (on average 3.952054794520548) internal successors, (577), 145 states have internal predecessors, (577), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:18,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:03:18,575 INFO L93 Difference]: Finished difference Result 740 states and 1030 transitions. [2022-01-31 23:03:18,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2022-01-31 23:03:18,575 INFO L78 Accepts]: Start accepts. Automaton has has 146 states, 146 states have (on average 3.952054794520548) internal successors, (577), 145 states have internal predecessors, (577), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 580 [2022-01-31 23:03:18,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:03:18,576 INFO L225 Difference]: With dead ends: 740 [2022-01-31 23:03:18,576 INFO L226 Difference]: Without dead ends: 733 [2022-01-31 23:03:18,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=10442, Invalid=10728, Unknown=0, NotChecked=0, Total=21170 [2022-01-31 23:03:18,577 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2427 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2427 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:03:18,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2427 Valid, 796 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:03:18,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-01-31 23:03:18,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 729. [2022-01-31 23:03:18,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 725 states have (on average 1.3972413793103449) internal successors, (1013), 725 states have internal predecessors, (1013), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:18,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1016 transitions. [2022-01-31 23:03:18,585 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1016 transitions. Word has length 580 [2022-01-31 23:03:18,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:03:18,585 INFO L470 AbstractCegarLoop]: Abstraction has 729 states and 1016 transitions. [2022-01-31 23:03:18,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 146 states, 146 states have (on average 3.952054794520548) internal successors, (577), 145 states have internal predecessors, (577), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:18,585 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1016 transitions. [2022-01-31 23:03:18,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2022-01-31 23:03:18,587 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:03:18,588 INFO L514 BasicCegarLoop]: trace histogram [143, 143, 143, 143, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:03:18,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2022-01-31 23:03:18,588 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:03:18,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:03:18,588 INFO L85 PathProgramCache]: Analyzing trace with hash 559777313, now seen corresponding path program 142 times [2022-01-31 23:03:18,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:03:18,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50843859] [2022-01-31 23:03:18,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:03:18,591 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:03:18,591 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:03:18,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:03:18,600 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:03:18,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:03:25,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:03:25,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:03:25,007 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 23:03:25,007 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:03:25,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50843859] [2022-01-31 23:03:25,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [50843859] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:03:25,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:03:25,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [147] imperfect sequences [] total 147 [2022-01-31 23:03:25,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248413565] [2022-01-31 23:03:25,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:03:25,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 147 states [2022-01-31 23:03:25,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:03:25,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2022-01-31 23:03:25,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10587, Invalid=10875, Unknown=0, NotChecked=0, Total=21462 [2022-01-31 23:03:25,011 INFO L87 Difference]: Start difference. First operand 729 states and 1016 transitions. Second operand has 147 states, 147 states have (on average 3.9523809523809526) internal successors, (581), 146 states have internal predecessors, (581), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:27,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:03:27,728 INFO L93 Difference]: Finished difference Result 745 states and 1037 transitions. [2022-01-31 23:03:27,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2022-01-31 23:03:27,728 INFO L78 Accepts]: Start accepts. Automaton has has 147 states, 147 states have (on average 3.9523809523809526) internal successors, (581), 146 states have internal predecessors, (581), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 584 [2022-01-31 23:03:27,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:03:27,729 INFO L225 Difference]: With dead ends: 745 [2022-01-31 23:03:27,729 INFO L226 Difference]: Without dead ends: 738 [2022-01-31 23:03:27,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=10587, Invalid=10875, Unknown=0, NotChecked=0, Total=21462 [2022-01-31 23:03:27,730 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2130 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2130 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:03:27,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2130 Valid, 801 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:03:27,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2022-01-31 23:03:27,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 734. [2022-01-31 23:03:27,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 730 states have (on average 1.3972602739726028) internal successors, (1020), 730 states have internal predecessors, (1020), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:27,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1023 transitions. [2022-01-31 23:03:27,738 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1023 transitions. Word has length 584 [2022-01-31 23:03:27,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:03:27,738 INFO L470 AbstractCegarLoop]: Abstraction has 734 states and 1023 transitions. [2022-01-31 23:03:27,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 147 states, 147 states have (on average 3.9523809523809526) internal successors, (581), 146 states have internal predecessors, (581), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:27,738 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1023 transitions. [2022-01-31 23:03:27,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2022-01-31 23:03:27,741 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:03:27,741 INFO L514 BasicCegarLoop]: trace histogram [144, 144, 144, 144, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:03:27,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2022-01-31 23:03:27,741 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:03:27,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:03:27,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1681160552, now seen corresponding path program 143 times [2022-01-31 23:03:27,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:03:27,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367837634] [2022-01-31 23:03:27,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:03:27,743 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:03:27,743 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:03:27,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:03:27,752 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:03:27,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:03:34,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:03:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:03:34,195 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 23:03:34,195 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:03:34,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367837634] [2022-01-31 23:03:34,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1367837634] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:03:34,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:03:34,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [148] imperfect sequences [] total 148 [2022-01-31 23:03:34,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262149064] [2022-01-31 23:03:34,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:03:34,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 148 states [2022-01-31 23:03:34,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:03:34,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2022-01-31 23:03:34,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10733, Invalid=11023, Unknown=0, NotChecked=0, Total=21756 [2022-01-31 23:03:34,199 INFO L87 Difference]: Start difference. First operand 734 states and 1023 transitions. Second operand has 148 states, 148 states have (on average 3.9527027027027026) internal successors, (585), 147 states have internal predecessors, (585), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:37,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:03:37,101 INFO L93 Difference]: Finished difference Result 750 states and 1044 transitions. [2022-01-31 23:03:37,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2022-01-31 23:03:37,101 INFO L78 Accepts]: Start accepts. Automaton has has 148 states, 148 states have (on average 3.9527027027027026) internal successors, (585), 147 states have internal predecessors, (585), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 588 [2022-01-31 23:03:37,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:03:37,102 INFO L225 Difference]: With dead ends: 750 [2022-01-31 23:03:37,102 INFO L226 Difference]: Without dead ends: 743 [2022-01-31 23:03:37,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=10733, Invalid=11023, Unknown=0, NotChecked=0, Total=21756 [2022-01-31 23:03:37,103 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2319 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2319 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:03:37,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2319 Valid, 830 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:03:37,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2022-01-31 23:03:37,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 739. [2022-01-31 23:03:37,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 739 states, 735 states have (on average 1.3972789115646258) internal successors, (1027), 735 states have internal predecessors, (1027), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:37,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 1030 transitions. [2022-01-31 23:03:37,114 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 1030 transitions. Word has length 588 [2022-01-31 23:03:37,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:03:37,115 INFO L470 AbstractCegarLoop]: Abstraction has 739 states and 1030 transitions. [2022-01-31 23:03:37,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 148 states, 148 states have (on average 3.9527027027027026) internal successors, (585), 147 states have internal predecessors, (585), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:37,115 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 1030 transitions. [2022-01-31 23:03:37,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2022-01-31 23:03:37,118 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:03:37,118 INFO L514 BasicCegarLoop]: trace histogram [145, 145, 145, 145, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:03:37,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2022-01-31 23:03:37,118 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:03:37,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:03:37,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1337822929, now seen corresponding path program 144 times [2022-01-31 23:03:37,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:03:37,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127045451] [2022-01-31 23:03:37,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:03:37,121 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:03:37,121 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:03:37,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:03:37,132 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:03:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:03:43,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:03:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:03:43,664 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 23:03:43,664 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:03:43,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127045451] [2022-01-31 23:03:43,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [127045451] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:03:43,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:03:43,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [149] imperfect sequences [] total 149 [2022-01-31 23:03:43,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384117558] [2022-01-31 23:03:43,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:03:43,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2022-01-31 23:03:43,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:03:43,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2022-01-31 23:03:43,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10880, Invalid=11172, Unknown=0, NotChecked=0, Total=22052 [2022-01-31 23:03:43,668 INFO L87 Difference]: Start difference. First operand 739 states and 1030 transitions. Second operand has 149 states, 149 states have (on average 3.953020134228188) internal successors, (589), 148 states have internal predecessors, (589), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:46,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:03:46,544 INFO L93 Difference]: Finished difference Result 755 states and 1051 transitions. [2022-01-31 23:03:46,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2022-01-31 23:03:46,545 INFO L78 Accepts]: Start accepts. Automaton has has 149 states, 149 states have (on average 3.953020134228188) internal successors, (589), 148 states have internal predecessors, (589), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 592 [2022-01-31 23:03:46,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:03:46,546 INFO L225 Difference]: With dead ends: 755 [2022-01-31 23:03:46,546 INFO L226 Difference]: Without dead ends: 748 [2022-01-31 23:03:46,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=10880, Invalid=11172, Unknown=0, NotChecked=0, Total=22052 [2022-01-31 23:03:46,547 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2208 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2208 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:03:46,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2208 Valid, 823 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:03:46,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2022-01-31 23:03:46,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 744. [2022-01-31 23:03:46,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 740 states have (on average 1.3972972972972972) internal successors, (1034), 740 states have internal predecessors, (1034), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:46,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1037 transitions. [2022-01-31 23:03:46,555 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1037 transitions. Word has length 592 [2022-01-31 23:03:46,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:03:46,555 INFO L470 AbstractCegarLoop]: Abstraction has 744 states and 1037 transitions. [2022-01-31 23:03:46,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 149 states have (on average 3.953020134228188) internal successors, (589), 148 states have internal predecessors, (589), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:46,555 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1037 transitions. [2022-01-31 23:03:46,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2022-01-31 23:03:46,558 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:03:46,558 INFO L514 BasicCegarLoop]: trace histogram [146, 146, 146, 146, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:03:46,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2022-01-31 23:03:46,558 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:03:46,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:03:46,558 INFO L85 PathProgramCache]: Analyzing trace with hash -781111946, now seen corresponding path program 145 times [2022-01-31 23:03:46,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:03:46,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430683774] [2022-01-31 23:03:46,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:03:46,564 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:03:46,564 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:03:46,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:03:46,576 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:03:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:03:53,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:03:53,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:03:53,274 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 23:03:53,274 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:03:53,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430683774] [2022-01-31 23:03:53,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [430683774] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:03:53,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:03:53,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [150] imperfect sequences [] total 150 [2022-01-31 23:03:53,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482087358] [2022-01-31 23:03:53,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:03:53,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 150 states [2022-01-31 23:03:53,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:03:53,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2022-01-31 23:03:53,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11028, Invalid=11322, Unknown=0, NotChecked=0, Total=22350 [2022-01-31 23:03:53,277 INFO L87 Difference]: Start difference. First operand 744 states and 1037 transitions. Second operand has 150 states, 150 states have (on average 3.953333333333333) internal successors, (593), 149 states have internal predecessors, (593), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:56,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:03:56,454 INFO L93 Difference]: Finished difference Result 760 states and 1058 transitions. [2022-01-31 23:03:56,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2022-01-31 23:03:56,455 INFO L78 Accepts]: Start accepts. Automaton has has 150 states, 150 states have (on average 3.953333333333333) internal successors, (593), 149 states have internal predecessors, (593), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 596 [2022-01-31 23:03:56,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:03:56,456 INFO L225 Difference]: With dead ends: 760 [2022-01-31 23:03:56,456 INFO L226 Difference]: Without dead ends: 753 [2022-01-31 23:03:56,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=11028, Invalid=11322, Unknown=0, NotChecked=0, Total=22350 [2022-01-31 23:03:56,456 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2439 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2439 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:03:56,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2439 Valid, 804 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:03:56,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-01-31 23:03:56,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 749. [2022-01-31 23:03:56,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 745 states have (on average 1.3973154362416107) internal successors, (1041), 745 states have internal predecessors, (1041), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:56,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1044 transitions. [2022-01-31 23:03:56,464 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1044 transitions. Word has length 596 [2022-01-31 23:03:56,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:03:56,464 INFO L470 AbstractCegarLoop]: Abstraction has 749 states and 1044 transitions. [2022-01-31 23:03:56,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 150 states, 150 states have (on average 3.953333333333333) internal successors, (593), 149 states have internal predecessors, (593), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:56,465 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1044 transitions. [2022-01-31 23:03:56,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2022-01-31 23:03:56,467 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:03:56,467 INFO L514 BasicCegarLoop]: trace histogram [147, 147, 147, 147, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:03:56,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2022-01-31 23:03:56,467 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:03:56,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:03:56,467 INFO L85 PathProgramCache]: Analyzing trace with hash 147484221, now seen corresponding path program 146 times [2022-01-31 23:03:56,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:03:56,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243980644] [2022-01-31 23:03:56,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:03:56,469 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:03:56,469 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:03:56,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:03:56,478 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:03:56,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:04:03,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:04:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:04:03,158 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 23:04:03,158 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:04:03,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243980644] [2022-01-31 23:04:03,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [243980644] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:04:03,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:04:03,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [151] imperfect sequences [] total 151 [2022-01-31 23:04:03,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478101654] [2022-01-31 23:04:03,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:04:03,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 151 states [2022-01-31 23:04:03,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:04:03,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2022-01-31 23:04:03,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11177, Invalid=11473, Unknown=0, NotChecked=0, Total=22650 [2022-01-31 23:04:03,163 INFO L87 Difference]: Start difference. First operand 749 states and 1044 transitions. Second operand has 151 states, 151 states have (on average 3.9536423841059603) internal successors, (597), 150 states have internal predecessors, (597), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:04:06,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:04:06,251 INFO L93 Difference]: Finished difference Result 765 states and 1065 transitions. [2022-01-31 23:04:06,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2022-01-31 23:04:06,252 INFO L78 Accepts]: Start accepts. Automaton has has 151 states, 151 states have (on average 3.9536423841059603) internal successors, (597), 150 states have internal predecessors, (597), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 600 [2022-01-31 23:04:06,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:04:06,253 INFO L225 Difference]: With dead ends: 765 [2022-01-31 23:04:06,253 INFO L226 Difference]: Without dead ends: 758 [2022-01-31 23:04:06,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=11177, Invalid=11473, Unknown=0, NotChecked=0, Total=22650 [2022-01-31 23:04:06,254 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2403 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2403 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:04:06,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2403 Valid, 821 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:04:06,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2022-01-31 23:04:06,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 754. [2022-01-31 23:04:06,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 750 states have (on average 1.3973333333333333) internal successors, (1048), 750 states have internal predecessors, (1048), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:04:06,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1051 transitions. [2022-01-31 23:04:06,261 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1051 transitions. Word has length 600 [2022-01-31 23:04:06,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:04:06,262 INFO L470 AbstractCegarLoop]: Abstraction has 754 states and 1051 transitions. [2022-01-31 23:04:06,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 151 states, 151 states have (on average 3.9536423841059603) internal successors, (597), 150 states have internal predecessors, (597), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:04:06,262 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1051 transitions. [2022-01-31 23:04:06,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2022-01-31 23:04:06,264 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:04:06,264 INFO L514 BasicCegarLoop]: trace histogram [148, 148, 148, 148, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:04:06,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2022-01-31 23:04:06,265 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:04:06,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:04:06,265 INFO L85 PathProgramCache]: Analyzing trace with hash 2088235908, now seen corresponding path program 147 times [2022-01-31 23:04:06,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:04:06,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445896639] [2022-01-31 23:04:06,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:04:06,266 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:04:06,266 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:04:06,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:04:06,276 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:04:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:04:13,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:04:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:04:13,124 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 23:04:13,124 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:04:13,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445896639] [2022-01-31 23:04:13,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1445896639] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:04:13,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:04:13,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [152] imperfect sequences [] total 152 [2022-01-31 23:04:13,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500350430] [2022-01-31 23:04:13,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:04:13,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 152 states [2022-01-31 23:04:13,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:04:13,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2022-01-31 23:04:13,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11327, Invalid=11625, Unknown=0, NotChecked=0, Total=22952 [2022-01-31 23:04:13,127 INFO L87 Difference]: Start difference. First operand 754 states and 1051 transitions. Second operand has 152 states, 152 states have (on average 3.9539473684210527) internal successors, (601), 151 states have internal predecessors, (601), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:04:16,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:04:16,274 INFO L93 Difference]: Finished difference Result 770 states and 1072 transitions. [2022-01-31 23:04:16,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2022-01-31 23:04:16,275 INFO L78 Accepts]: Start accepts. Automaton has has 152 states, 152 states have (on average 3.9539473684210527) internal successors, (601), 151 states have internal predecessors, (601), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 604 [2022-01-31 23:04:16,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:04:16,276 INFO L225 Difference]: With dead ends: 770 [2022-01-31 23:04:16,276 INFO L226 Difference]: Without dead ends: 763 [2022-01-31 23:04:16,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=11327, Invalid=11625, Unknown=0, NotChecked=0, Total=22952 [2022-01-31 23:04:16,277 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2352 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2352 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:04:16,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2352 Valid, 814 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:04:16,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2022-01-31 23:04:16,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 759. [2022-01-31 23:04:16,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 755 states have (on average 1.3973509933774835) internal successors, (1055), 755 states have internal predecessors, (1055), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:04:16,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1058 transitions. [2022-01-31 23:04:16,285 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1058 transitions. Word has length 604 [2022-01-31 23:04:16,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:04:16,285 INFO L470 AbstractCegarLoop]: Abstraction has 759 states and 1058 transitions. [2022-01-31 23:04:16,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 152 states, 152 states have (on average 3.9539473684210527) internal successors, (601), 151 states have internal predecessors, (601), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:04:16,285 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1058 transitions. [2022-01-31 23:04:16,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2022-01-31 23:04:16,287 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:04:16,288 INFO L514 BasicCegarLoop]: trace histogram [149, 149, 149, 149, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:04:16,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2022-01-31 23:04:16,288 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:04:16,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:04:16,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1480360629, now seen corresponding path program 148 times [2022-01-31 23:04:16,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:04:16,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555792936] [2022-01-31 23:04:16,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:04:16,290 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:04:16,290 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:04:16,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:04:16,300 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:04:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:04:23,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:04:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:04:23,357 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 23:04:23,357 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:04:23,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555792936] [2022-01-31 23:04:23,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1555792936] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:04:23,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:04:23,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [153] imperfect sequences [] total 153 [2022-01-31 23:04:23,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246456034] [2022-01-31 23:04:23,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:04:23,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 153 states [2022-01-31 23:04:23,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:04:23,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2022-01-31 23:04:23,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11478, Invalid=11778, Unknown=0, NotChecked=0, Total=23256 [2022-01-31 23:04:23,359 INFO L87 Difference]: Start difference. First operand 759 states and 1058 transitions. Second operand has 153 states, 153 states have (on average 3.954248366013072) internal successors, (605), 152 states have internal predecessors, (605), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:04:26,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:04:26,507 INFO L93 Difference]: Finished difference Result 775 states and 1079 transitions. [2022-01-31 23:04:26,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2022-01-31 23:04:26,507 INFO L78 Accepts]: Start accepts. Automaton has has 153 states, 153 states have (on average 3.954248366013072) internal successors, (605), 152 states have internal predecessors, (605), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 608 [2022-01-31 23:04:26,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:04:26,508 INFO L225 Difference]: With dead ends: 775 [2022-01-31 23:04:26,508 INFO L226 Difference]: Without dead ends: 768 [2022-01-31 23:04:26,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=11478, Invalid=11778, Unknown=0, NotChecked=0, Total=23256 [2022-01-31 23:04:26,509 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2397 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2397 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:04:26,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2397 Valid, 843 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:04:26,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2022-01-31 23:04:26,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 764. [2022-01-31 23:04:26,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 760 states have (on average 1.3973684210526316) internal successors, (1062), 760 states have internal predecessors, (1062), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:04:26,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 1065 transitions. [2022-01-31 23:04:26,517 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 1065 transitions. Word has length 608 [2022-01-31 23:04:26,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:04:26,517 INFO L470 AbstractCegarLoop]: Abstraction has 764 states and 1065 transitions. [2022-01-31 23:04:26,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 153 states, 153 states have (on average 3.954248366013072) internal successors, (605), 152 states have internal predecessors, (605), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:04:26,517 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 1065 transitions. [2022-01-31 23:04:26,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2022-01-31 23:04:26,519 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:04:26,520 INFO L514 BasicCegarLoop]: trace histogram [150, 150, 150, 150, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:04:26,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2022-01-31 23:04:26,520 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:04:26,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:04:26,520 INFO L85 PathProgramCache]: Analyzing trace with hash -887698542, now seen corresponding path program 149 times [2022-01-31 23:04:26,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:04:26,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959967563] [2022-01-31 23:04:26,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:04:26,522 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:04:26,522 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:04:26,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:04:26,531 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:04:26,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:04:33,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:04:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:04:33,500 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 23:04:33,500 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:04:33,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959967563] [2022-01-31 23:04:33,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1959967563] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:04:33,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:04:33,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [154] imperfect sequences [] total 154 [2022-01-31 23:04:33,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378940330] [2022-01-31 23:04:33,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:04:33,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 154 states [2022-01-31 23:04:33,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:04:33,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2022-01-31 23:04:33,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11630, Invalid=11932, Unknown=0, NotChecked=0, Total=23562 [2022-01-31 23:04:33,506 INFO L87 Difference]: Start difference. First operand 764 states and 1065 transitions. Second operand has 154 states, 154 states have (on average 3.9545454545454546) internal successors, (609), 153 states have internal predecessors, (609), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:04:36,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:04:36,752 INFO L93 Difference]: Finished difference Result 780 states and 1086 transitions. [2022-01-31 23:04:36,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2022-01-31 23:04:36,753 INFO L78 Accepts]: Start accepts. Automaton has has 154 states, 154 states have (on average 3.9545454545454546) internal successors, (609), 153 states have internal predecessors, (609), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 612 [2022-01-31 23:04:36,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:04:36,753 INFO L225 Difference]: With dead ends: 780 [2022-01-31 23:04:36,753 INFO L226 Difference]: Without dead ends: 773 [2022-01-31 23:04:36,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=11630, Invalid=11932, Unknown=0, NotChecked=0, Total=23562 [2022-01-31 23:04:36,754 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2619 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2619 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:04:36,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2619 Valid, 872 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:04:36,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2022-01-31 23:04:36,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 769. [2022-01-31 23:04:36,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 765 states have (on average 1.3973856209150326) internal successors, (1069), 765 states have internal predecessors, (1069), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:04:36,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1072 transitions. [2022-01-31 23:04:36,763 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1072 transitions. Word has length 612 [2022-01-31 23:04:36,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:04:36,763 INFO L470 AbstractCegarLoop]: Abstraction has 769 states and 1072 transitions. [2022-01-31 23:04:36,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 154 states, 154 states have (on average 3.9545454545454546) internal successors, (609), 153 states have internal predecessors, (609), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:04:36,763 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1072 transitions. [2022-01-31 23:04:36,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 617 [2022-01-31 23:04:36,766 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:04:36,766 INFO L514 BasicCegarLoop]: trace histogram [151, 151, 151, 151, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:04:36,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2022-01-31 23:04:36,766 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:04:36,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:04:36,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1543216729, now seen corresponding path program 150 times [2022-01-31 23:04:36,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:04:36,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72375236] [2022-01-31 23:04:36,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:04:36,768 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:04:36,768 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:04:36,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:04:36,778 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:04:36,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:04:43,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:04:43,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:04:43,724 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 23:04:43,724 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:04:43,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72375236] [2022-01-31 23:04:43,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [72375236] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:04:43,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:04:43,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [155] imperfect sequences [] total 155 [2022-01-31 23:04:43,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456045909] [2022-01-31 23:04:43,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:04:43,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 155 states [2022-01-31 23:04:43,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:04:43,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2022-01-31 23:04:43,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11783, Invalid=12087, Unknown=0, NotChecked=0, Total=23870 [2022-01-31 23:04:43,729 INFO L87 Difference]: Start difference. First operand 769 states and 1072 transitions. Second operand has 155 states, 155 states have (on average 3.9548387096774196) internal successors, (613), 154 states have internal predecessors, (613), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:04:46,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:04:46,968 INFO L93 Difference]: Finished difference Result 785 states and 1093 transitions. [2022-01-31 23:04:46,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2022-01-31 23:04:46,968 INFO L78 Accepts]: Start accepts. Automaton has has 155 states, 155 states have (on average 3.9548387096774196) internal successors, (613), 154 states have internal predecessors, (613), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 616 [2022-01-31 23:04:46,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:04:46,969 INFO L225 Difference]: With dead ends: 785 [2022-01-31 23:04:46,969 INFO L226 Difference]: Without dead ends: 778 [2022-01-31 23:04:46,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=11783, Invalid=12087, Unknown=0, NotChecked=0, Total=23870 [2022-01-31 23:04:46,970 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2841 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2841 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:04:46,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2841 Valid, 805 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:04:46,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2022-01-31 23:04:46,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 774. [2022-01-31 23:04:46,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 770 states have (on average 1.3974025974025974) internal successors, (1076), 770 states have internal predecessors, (1076), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:04:46,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1079 transitions. [2022-01-31 23:04:46,979 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1079 transitions. Word has length 616 [2022-01-31 23:04:46,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:04:46,979 INFO L470 AbstractCegarLoop]: Abstraction has 774 states and 1079 transitions. [2022-01-31 23:04:46,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 155 states, 155 states have (on average 3.9548387096774196) internal successors, (613), 154 states have internal predecessors, (613), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:04:46,979 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1079 transitions. [2022-01-31 23:04:46,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2022-01-31 23:04:46,982 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:04:46,982 INFO L514 BasicCegarLoop]: trace histogram [152, 152, 152, 152, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:04:46,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2022-01-31 23:04:46,982 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:04:46,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:04:46,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1964750240, now seen corresponding path program 151 times [2022-01-31 23:04:46,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:04:46,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924060418] [2022-01-31 23:04:46,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:04:46,984 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:04:46,984 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:04:46,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:04:46,994 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:04:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:04:54,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:04:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:04:54,048 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 23:04:54,048 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:04:54,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924060418] [2022-01-31 23:04:54,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [924060418] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:04:54,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:04:54,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [156] imperfect sequences [] total 156 [2022-01-31 23:04:54,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984495867] [2022-01-31 23:04:54,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:04:54,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 156 states [2022-01-31 23:04:54,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:04:54,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2022-01-31 23:04:54,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11937, Invalid=12243, Unknown=0, NotChecked=0, Total=24180 [2022-01-31 23:04:54,055 INFO L87 Difference]: Start difference. First operand 774 states and 1079 transitions. Second operand has 156 states, 156 states have (on average 3.9551282051282053) internal successors, (617), 155 states have internal predecessors, (617), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:04:57,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:04:57,557 INFO L93 Difference]: Finished difference Result 790 states and 1100 transitions. [2022-01-31 23:04:57,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-01-31 23:04:57,558 INFO L78 Accepts]: Start accepts. Automaton has has 156 states, 156 states have (on average 3.9551282051282053) internal successors, (617), 155 states have internal predecessors, (617), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 620 [2022-01-31 23:04:57,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:04:57,574 INFO L225 Difference]: With dead ends: 790 [2022-01-31 23:04:57,575 INFO L226 Difference]: Without dead ends: 783 [2022-01-31 23:04:57,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=11937, Invalid=12243, Unknown=0, NotChecked=0, Total=24180 [2022-01-31 23:04:57,576 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2199 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2199 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:04:57,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2199 Valid, 894 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:04:57,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2022-01-31 23:04:57,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 779. [2022-01-31 23:04:57,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 775 states have (on average 1.3974193548387097) internal successors, (1083), 775 states have internal predecessors, (1083), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:04:57,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 1086 transitions. [2022-01-31 23:04:57,584 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 1086 transitions. Word has length 620 [2022-01-31 23:04:57,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:04:57,584 INFO L470 AbstractCegarLoop]: Abstraction has 779 states and 1086 transitions. [2022-01-31 23:04:57,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 156 states, 156 states have (on average 3.9551282051282053) internal successors, (617), 155 states have internal predecessors, (617), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:04:57,584 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 1086 transitions. [2022-01-31 23:04:57,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2022-01-31 23:04:57,587 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:04:57,587 INFO L514 BasicCegarLoop]: trace histogram [153, 153, 153, 153, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:04:57,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2022-01-31 23:04:57,587 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:04:57,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:04:57,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1178653031, now seen corresponding path program 152 times [2022-01-31 23:04:57,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:04:57,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619486983] [2022-01-31 23:04:57,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:04:57,591 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:04:57,591 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:04:57,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:04:57,601 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:04:57,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:05:04,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:05:04,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:05:04,730 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 23:05:04,730 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:05:04,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619486983] [2022-01-31 23:05:04,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [619486983] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:05:04,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:05:04,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [157] imperfect sequences [] total 157 [2022-01-31 23:05:04,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319911252] [2022-01-31 23:05:04,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:05:04,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 157 states [2022-01-31 23:05:04,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:05:04,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2022-01-31 23:05:04,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12092, Invalid=12400, Unknown=0, NotChecked=0, Total=24492 [2022-01-31 23:05:04,733 INFO L87 Difference]: Start difference. First operand 779 states and 1086 transitions. Second operand has 157 states, 157 states have (on average 3.9554140127388533) internal successors, (621), 156 states have internal predecessors, (621), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:05:08,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:05:08,231 INFO L93 Difference]: Finished difference Result 795 states and 1107 transitions. [2022-01-31 23:05:08,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2022-01-31 23:05:08,232 INFO L78 Accepts]: Start accepts. Automaton has has 157 states, 157 states have (on average 3.9554140127388533) internal successors, (621), 156 states have internal predecessors, (621), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 624 [2022-01-31 23:05:08,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:05:08,233 INFO L225 Difference]: With dead ends: 795 [2022-01-31 23:05:08,233 INFO L226 Difference]: Without dead ends: 788 [2022-01-31 23:05:08,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=12092, Invalid=12400, Unknown=0, NotChecked=0, Total=24492 [2022-01-31 23:05:08,234 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2532 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2532 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:05:08,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2532 Valid, 851 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:05:08,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2022-01-31 23:05:08,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 784. [2022-01-31 23:05:08,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 780 states have (on average 1.3974358974358974) internal successors, (1090), 780 states have internal predecessors, (1090), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:05:08,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1093 transitions. [2022-01-31 23:05:08,242 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1093 transitions. Word has length 624 [2022-01-31 23:05:08,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:05:08,242 INFO L470 AbstractCegarLoop]: Abstraction has 784 states and 1093 transitions. [2022-01-31 23:05:08,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 157 states, 157 states have (on average 3.9554140127388533) internal successors, (621), 156 states have internal predecessors, (621), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:05:08,242 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1093 transitions. [2022-01-31 23:05:08,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2022-01-31 23:05:08,245 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:05:08,245 INFO L514 BasicCegarLoop]: trace histogram [154, 154, 154, 154, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:05:08,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2022-01-31 23:05:08,245 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:05:08,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:05:08,245 INFO L85 PathProgramCache]: Analyzing trace with hash -2074824274, now seen corresponding path program 153 times [2022-01-31 23:05:08,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:05:08,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748386478] [2022-01-31 23:05:08,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:05:08,247 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:05:08,247 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:05:08,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:05:08,258 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:05:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:05:15,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:05:15,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:05:15,564 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 23:05:15,565 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:05:15,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748386478] [2022-01-31 23:05:15,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [748386478] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:05:15,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:05:15,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [158] imperfect sequences [] total 158 [2022-01-31 23:05:15,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697773772] [2022-01-31 23:05:15,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:05:15,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 158 states [2022-01-31 23:05:15,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:05:15,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2022-01-31 23:05:15,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12248, Invalid=12558, Unknown=0, NotChecked=0, Total=24806 [2022-01-31 23:05:15,567 INFO L87 Difference]: Start difference. First operand 784 states and 1093 transitions. Second operand has 158 states, 158 states have (on average 3.9556962025316458) internal successors, (625), 157 states have internal predecessors, (625), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:05:19,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:05:19,017 INFO L93 Difference]: Finished difference Result 800 states and 1114 transitions. [2022-01-31 23:05:19,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2022-01-31 23:05:19,017 INFO L78 Accepts]: Start accepts. Automaton has has 158 states, 158 states have (on average 3.9556962025316458) internal successors, (625), 157 states have internal predecessors, (625), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 628 [2022-01-31 23:05:19,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:05:19,018 INFO L225 Difference]: With dead ends: 800 [2022-01-31 23:05:19,018 INFO L226 Difference]: Without dead ends: 793 [2022-01-31 23:05:19,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=12248, Invalid=12558, Unknown=0, NotChecked=0, Total=24806 [2022-01-31 23:05:19,019 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2769 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2769 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:05:19,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2769 Valid, 868 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:05:19,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2022-01-31 23:05:19,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 789. [2022-01-31 23:05:19,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 785 states have (on average 1.397452229299363) internal successors, (1097), 785 states have internal predecessors, (1097), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:05:19,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1100 transitions. [2022-01-31 23:05:19,027 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1100 transitions. Word has length 628 [2022-01-31 23:05:19,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:05:19,028 INFO L470 AbstractCegarLoop]: Abstraction has 789 states and 1100 transitions. [2022-01-31 23:05:19,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 158 states, 158 states have (on average 3.9556962025316458) internal successors, (625), 157 states have internal predecessors, (625), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:05:19,028 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1100 transitions. [2022-01-31 23:05:19,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2022-01-31 23:05:19,030 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:05:19,031 INFO L514 BasicCegarLoop]: trace histogram [155, 155, 155, 155, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:05:19,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2022-01-31 23:05:19,031 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:05:19,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:05:19,031 INFO L85 PathProgramCache]: Analyzing trace with hash -647948683, now seen corresponding path program 154 times [2022-01-31 23:05:19,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:05:19,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435174612] [2022-01-31 23:05:19,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:05:19,034 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:05:19,034 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:05:19,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:05:19,045 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:05:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:05:26,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:05:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:05:26,338 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 23:05:26,338 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:05:26,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435174612] [2022-01-31 23:05:26,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [435174612] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:05:26,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:05:26,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [159] imperfect sequences [] total 159 [2022-01-31 23:05:26,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823581449] [2022-01-31 23:05:26,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:05:26,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 159 states [2022-01-31 23:05:26,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:05:26,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2022-01-31 23:05:26,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12405, Invalid=12717, Unknown=0, NotChecked=0, Total=25122 [2022-01-31 23:05:26,341 INFO L87 Difference]: Start difference. First operand 789 states and 1100 transitions. Second operand has 159 states, 159 states have (on average 3.9559748427672954) internal successors, (629), 158 states have internal predecessors, (629), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:05:30,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:05:30,109 INFO L93 Difference]: Finished difference Result 805 states and 1121 transitions. [2022-01-31 23:05:30,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2022-01-31 23:05:30,109 INFO L78 Accepts]: Start accepts. Automaton has has 159 states, 159 states have (on average 3.9559748427672954) internal successors, (629), 158 states have internal predecessors, (629), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 632 [2022-01-31 23:05:30,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:05:30,110 INFO L225 Difference]: With dead ends: 805 [2022-01-31 23:05:30,110 INFO L226 Difference]: Without dead ends: 798 [2022-01-31 23:05:30,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=12405, Invalid=12717, Unknown=0, NotChecked=0, Total=25122 [2022-01-31 23:05:30,111 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2364 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2364 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:05:30,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2364 Valid, 885 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:05:30,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2022-01-31 23:05:30,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 794. [2022-01-31 23:05:30,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 790 states have (on average 1.3974683544303796) internal successors, (1104), 790 states have internal predecessors, (1104), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:05:30,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1107 transitions. [2022-01-31 23:05:30,120 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1107 transitions. Word has length 632 [2022-01-31 23:05:30,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:05:30,120 INFO L470 AbstractCegarLoop]: Abstraction has 794 states and 1107 transitions. [2022-01-31 23:05:30,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 159 states, 159 states have (on average 3.9559748427672954) internal successors, (629), 158 states have internal predecessors, (629), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:05:30,120 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1107 transitions. [2022-01-31 23:05:30,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2022-01-31 23:05:30,123 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:05:30,123 INFO L514 BasicCegarLoop]: trace histogram [156, 156, 156, 156, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:05:30,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2022-01-31 23:05:30,123 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:05:30,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:05:30,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1418706876, now seen corresponding path program 155 times [2022-01-31 23:05:30,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:05:30,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977692021] [2022-01-31 23:05:30,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:05:30,125 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:05:30,125 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:05:30,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:05:30,136 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:05:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:05:37,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:05:37,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:05:37,507 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 23:05:37,507 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:05:37,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977692021] [2022-01-31 23:05:37,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [977692021] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:05:37,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:05:37,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [160] imperfect sequences [] total 160 [2022-01-31 23:05:37,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095640868] [2022-01-31 23:05:37,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:05:37,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 160 states [2022-01-31 23:05:37,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:05:37,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2022-01-31 23:05:37,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12563, Invalid=12877, Unknown=0, NotChecked=0, Total=25440 [2022-01-31 23:05:37,511 INFO L87 Difference]: Start difference. First operand 794 states and 1107 transitions. Second operand has 160 states, 160 states have (on average 3.95625) internal successors, (633), 159 states have internal predecessors, (633), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:05:41,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:05:41,132 INFO L93 Difference]: Finished difference Result 810 states and 1128 transitions. [2022-01-31 23:05:41,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2022-01-31 23:05:41,132 INFO L78 Accepts]: Start accepts. Automaton has has 160 states, 160 states have (on average 3.95625) internal successors, (633), 159 states have internal predecessors, (633), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 636 [2022-01-31 23:05:41,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:05:41,133 INFO L225 Difference]: With dead ends: 810 [2022-01-31 23:05:41,133 INFO L226 Difference]: Without dead ends: 803 [2022-01-31 23:05:41,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=12563, Invalid=12877, Unknown=0, NotChecked=0, Total=25440 [2022-01-31 23:05:41,134 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2265 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2265 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:05:41,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2265 Valid, 890 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:05:41,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2022-01-31 23:05:41,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 799. [2022-01-31 23:05:41,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 795 states have (on average 1.3974842767295597) internal successors, (1111), 795 states have internal predecessors, (1111), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:05:41,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1114 transitions. [2022-01-31 23:05:41,146 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1114 transitions. Word has length 636 [2022-01-31 23:05:41,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:05:41,146 INFO L470 AbstractCegarLoop]: Abstraction has 799 states and 1114 transitions. [2022-01-31 23:05:41,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 160 states, 160 states have (on average 3.95625) internal successors, (633), 159 states have internal predecessors, (633), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:05:41,146 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1114 transitions. [2022-01-31 23:05:41,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2022-01-31 23:05:41,150 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:05:41,150 INFO L514 BasicCegarLoop]: trace histogram [157, 157, 157, 157, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:05:41,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2022-01-31 23:05:41,150 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:05:41,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:05:41,150 INFO L85 PathProgramCache]: Analyzing trace with hash -634753661, now seen corresponding path program 156 times [2022-01-31 23:05:41,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:05:41,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [514702378] [2022-01-31 23:05:41,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:05:41,153 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:05:41,153 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:05:41,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:05:41,163 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:05:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:05:48,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:05:48,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:05:48,634 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 23:05:48,634 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:05:48,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [514702378] [2022-01-31 23:05:48,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [514702378] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:05:48,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:05:48,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [161] imperfect sequences [] total 161 [2022-01-31 23:05:48,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311771977] [2022-01-31 23:05:48,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:05:48,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 161 states [2022-01-31 23:05:48,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:05:48,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2022-01-31 23:05:48,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12722, Invalid=13038, Unknown=0, NotChecked=0, Total=25760 [2022-01-31 23:05:48,638 INFO L87 Difference]: Start difference. First operand 799 states and 1114 transitions. Second operand has 161 states, 161 states have (on average 3.9565217391304346) internal successors, (637), 160 states have internal predecessors, (637), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:05:52,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:05:52,517 INFO L93 Difference]: Finished difference Result 815 states and 1135 transitions. [2022-01-31 23:05:52,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2022-01-31 23:05:52,518 INFO L78 Accepts]: Start accepts. Automaton has has 161 states, 161 states have (on average 3.9565217391304346) internal successors, (637), 160 states have internal predecessors, (637), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 640 [2022-01-31 23:05:52,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:05:52,518 INFO L225 Difference]: With dead ends: 815 [2022-01-31 23:05:52,519 INFO L226 Difference]: Without dead ends: 808 [2022-01-31 23:05:52,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=12722, Invalid=13038, Unknown=0, NotChecked=0, Total=25760 [2022-01-31 23:05:52,519 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2496 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2496 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:05:52,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2496 Valid, 895 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:05:52,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2022-01-31 23:05:52,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 804. [2022-01-31 23:05:52,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 800 states have (on average 1.3975) internal successors, (1118), 800 states have internal predecessors, (1118), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:05:52,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1121 transitions. [2022-01-31 23:05:52,528 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1121 transitions. Word has length 640 [2022-01-31 23:05:52,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:05:52,528 INFO L470 AbstractCegarLoop]: Abstraction has 804 states and 1121 transitions. [2022-01-31 23:05:52,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 161 states, 161 states have (on average 3.9565217391304346) internal successors, (637), 160 states have internal predecessors, (637), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:05:52,528 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1121 transitions. [2022-01-31 23:05:52,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2022-01-31 23:05:52,531 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:05:52,531 INFO L514 BasicCegarLoop]: trace histogram [158, 158, 158, 158, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:05:52,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2022-01-31 23:05:52,531 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:05:52,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:05:52,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1818566710, now seen corresponding path program 157 times [2022-01-31 23:05:52,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:05:52,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936095057] [2022-01-31 23:05:52,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:05:52,533 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:05:52,533 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:05:52,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:05:52,545 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:05:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:06:00,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:06:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:06:00,124 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 23:06:00,124 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:06:00,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936095057] [2022-01-31 23:06:00,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [936095057] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:06:00,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:06:00,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [162] imperfect sequences [] total 162 [2022-01-31 23:06:00,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192125713] [2022-01-31 23:06:00,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:06:00,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 162 states [2022-01-31 23:06:00,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:06:00,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2022-01-31 23:06:00,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12882, Invalid=13200, Unknown=0, NotChecked=0, Total=26082 [2022-01-31 23:06:00,127 INFO L87 Difference]: Start difference. First operand 804 states and 1121 transitions. Second operand has 162 states, 162 states have (on average 3.95679012345679) internal successors, (641), 161 states have internal predecessors, (641), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:06:03,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:06:03,894 INFO L93 Difference]: Finished difference Result 820 states and 1142 transitions. [2022-01-31 23:06:03,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2022-01-31 23:06:03,895 INFO L78 Accepts]: Start accepts. Automaton has has 162 states, 162 states have (on average 3.95679012345679) internal successors, (641), 161 states have internal predecessors, (641), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 644 [2022-01-31 23:06:03,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:06:03,896 INFO L225 Difference]: With dead ends: 820 [2022-01-31 23:06:03,896 INFO L226 Difference]: Without dead ends: 813 [2022-01-31 23:06:03,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=12882, Invalid=13200, Unknown=0, NotChecked=0, Total=26082 [2022-01-31 23:06:03,897 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 3090 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3090 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:06:03,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3090 Valid, 900 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:06:03,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2022-01-31 23:06:03,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 809. [2022-01-31 23:06:03,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 805 states have (on average 1.3975155279503106) internal successors, (1125), 805 states have internal predecessors, (1125), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:06:03,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 1128 transitions. [2022-01-31 23:06:03,905 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 1128 transitions. Word has length 644 [2022-01-31 23:06:03,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:06:03,905 INFO L470 AbstractCegarLoop]: Abstraction has 809 states and 1128 transitions. [2022-01-31 23:06:03,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 162 states, 162 states have (on average 3.95679012345679) internal successors, (641), 161 states have internal predecessors, (641), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:06:03,905 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 1128 transitions. [2022-01-31 23:06:03,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2022-01-31 23:06:03,908 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:06:03,908 INFO L514 BasicCegarLoop]: trace histogram [159, 159, 159, 159, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:06:03,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2022-01-31 23:06:03,909 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:06:03,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:06:03,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1600837265, now seen corresponding path program 158 times [2022-01-31 23:06:03,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:06:03,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862816457] [2022-01-31 23:06:03,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:06:03,910 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:06:03,911 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:06:03,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:06:03,922 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:06:04,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:06:11,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:06:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:06:11,677 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 23:06:11,677 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:06:11,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862816457] [2022-01-31 23:06:11,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [862816457] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:06:11,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:06:11,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [163] imperfect sequences [] total 163 [2022-01-31 23:06:11,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126425931] [2022-01-31 23:06:11,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:06:11,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 163 states [2022-01-31 23:06:11,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:06:11,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2022-01-31 23:06:11,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13043, Invalid=13363, Unknown=0, NotChecked=0, Total=26406 [2022-01-31 23:06:11,681 INFO L87 Difference]: Start difference. First operand 809 states and 1128 transitions. Second operand has 163 states, 163 states have (on average 3.957055214723926) internal successors, (645), 162 states have internal predecessors, (645), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:06:15,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:06:15,560 INFO L93 Difference]: Finished difference Result 825 states and 1149 transitions. [2022-01-31 23:06:15,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2022-01-31 23:06:15,560 INFO L78 Accepts]: Start accepts. Automaton has has 163 states, 163 states have (on average 3.957055214723926) internal successors, (645), 162 states have internal predecessors, (645), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 648 [2022-01-31 23:06:15,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:06:15,561 INFO L225 Difference]: With dead ends: 825 [2022-01-31 23:06:15,561 INFO L226 Difference]: Without dead ends: 818 [2022-01-31 23:06:15,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=13043, Invalid=13363, Unknown=0, NotChecked=0, Total=26406 [2022-01-31 23:06:15,562 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2409 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2409 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:06:15,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2409 Valid, 905 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:06:15,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2022-01-31 23:06:15,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 814. [2022-01-31 23:06:15,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 810 states have (on average 1.3975308641975308) internal successors, (1132), 810 states have internal predecessors, (1132), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:06:15,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1135 transitions. [2022-01-31 23:06:15,575 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1135 transitions. Word has length 648 [2022-01-31 23:06:15,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:06:15,576 INFO L470 AbstractCegarLoop]: Abstraction has 814 states and 1135 transitions. [2022-01-31 23:06:15,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 163 states, 163 states have (on average 3.957055214723926) internal successors, (645), 162 states have internal predecessors, (645), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:06:15,576 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1135 transitions. [2022-01-31 23:06:15,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2022-01-31 23:06:15,579 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:06:15,580 INFO L514 BasicCegarLoop]: trace histogram [160, 160, 160, 160, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:06:15,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2022-01-31 23:06:15,580 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:06:15,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:06:15,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1094980056, now seen corresponding path program 159 times [2022-01-31 23:06:15,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:06:15,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195919323] [2022-01-31 23:06:15,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:06:15,582 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:06:15,582 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:06:15,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:06:15,597 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:06:15,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:06:23,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:06:23,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:06:23,420 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 23:06:23,421 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:06:23,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195919323] [2022-01-31 23:06:23,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1195919323] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:06:23,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:06:23,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [164] imperfect sequences [] total 164 [2022-01-31 23:06:23,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776227716] [2022-01-31 23:06:23,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:06:23,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 164 states [2022-01-31 23:06:23,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:06:23,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2022-01-31 23:06:23,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13205, Invalid=13527, Unknown=0, NotChecked=0, Total=26732 [2022-01-31 23:06:23,424 INFO L87 Difference]: Start difference. First operand 814 states and 1135 transitions. Second operand has 164 states, 164 states have (on average 3.957317073170732) internal successors, (649), 163 states have internal predecessors, (649), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:06:27,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:06:27,352 INFO L93 Difference]: Finished difference Result 830 states and 1156 transitions. [2022-01-31 23:06:27,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2022-01-31 23:06:27,352 INFO L78 Accepts]: Start accepts. Automaton has has 164 states, 164 states have (on average 3.957317073170732) internal successors, (649), 163 states have internal predecessors, (649), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 652 [2022-01-31 23:06:27,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:06:27,353 INFO L225 Difference]: With dead ends: 830 [2022-01-31 23:06:27,353 INFO L226 Difference]: Without dead ends: 823 [2022-01-31 23:06:27,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=13205, Invalid=13527, Unknown=0, NotChecked=0, Total=26732 [2022-01-31 23:06:27,354 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2766 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2766 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:06:27,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2766 Valid, 862 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:06:27,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2022-01-31 23:06:27,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 819. [2022-01-31 23:06:27,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 815 states have (on average 1.3975460122699386) internal successors, (1139), 815 states have internal predecessors, (1139), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:06:27,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1142 transitions. [2022-01-31 23:06:27,365 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1142 transitions. Word has length 652 [2022-01-31 23:06:27,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:06:27,365 INFO L470 AbstractCegarLoop]: Abstraction has 819 states and 1142 transitions. [2022-01-31 23:06:27,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 164 states, 164 states have (on average 3.957317073170732) internal successors, (649), 163 states have internal predecessors, (649), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:06:27,365 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1142 transitions. [2022-01-31 23:06:27,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2022-01-31 23:06:27,368 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:06:27,368 INFO L514 BasicCegarLoop]: trace histogram [161, 161, 161, 161, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:06:27,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2022-01-31 23:06:27,368 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:06:27,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:06:27,369 INFO L85 PathProgramCache]: Analyzing trace with hash -772779617, now seen corresponding path program 160 times [2022-01-31 23:06:27,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:06:27,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740262561] [2022-01-31 23:06:27,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:06:27,370 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:06:27,371 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:06:27,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:06:27,382 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:06:27,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:06:35,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:06:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:06:35,200 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 23:06:35,200 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:06:35,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [740262561] [2022-01-31 23:06:35,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [740262561] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:06:35,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:06:35,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [165] imperfect sequences [] total 165 [2022-01-31 23:06:35,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815354133] [2022-01-31 23:06:35,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:06:35,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 165 states [2022-01-31 23:06:35,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:06:35,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2022-01-31 23:06:35,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13368, Invalid=13692, Unknown=0, NotChecked=0, Total=27060 [2022-01-31 23:06:35,204 INFO L87 Difference]: Start difference. First operand 819 states and 1142 transitions. Second operand has 165 states, 165 states have (on average 3.9575757575757575) internal successors, (653), 164 states have internal predecessors, (653), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:06:39,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:06:39,443 INFO L93 Difference]: Finished difference Result 835 states and 1163 transitions. [2022-01-31 23:06:39,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2022-01-31 23:06:39,443 INFO L78 Accepts]: Start accepts. Automaton has has 165 states, 165 states have (on average 3.9575757575757575) internal successors, (653), 164 states have internal predecessors, (653), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 656 [2022-01-31 23:06:39,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:06:39,444 INFO L225 Difference]: With dead ends: 835 [2022-01-31 23:06:39,444 INFO L226 Difference]: Without dead ends: 828 [2022-01-31 23:06:39,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=13368, Invalid=13692, Unknown=0, NotChecked=0, Total=27060 [2022-01-31 23:06:39,445 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2493 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2493 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:06:39,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2493 Valid, 903 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:06:39,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2022-01-31 23:06:39,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 824. [2022-01-31 23:06:39,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 820 states have (on average 1.397560975609756) internal successors, (1146), 820 states have internal predecessors, (1146), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:06:39,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1149 transitions. [2022-01-31 23:06:39,457 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1149 transitions. Word has length 656 [2022-01-31 23:06:39,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:06:39,457 INFO L470 AbstractCegarLoop]: Abstraction has 824 states and 1149 transitions. [2022-01-31 23:06:39,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 165 states, 165 states have (on average 3.9575757575757575) internal successors, (653), 164 states have internal predecessors, (653), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:06:39,457 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1149 transitions. [2022-01-31 23:06:39,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2022-01-31 23:06:39,461 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:06:39,461 INFO L514 BasicCegarLoop]: trace histogram [162, 162, 162, 162, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:06:39,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2022-01-31 23:06:39,461 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:06:39,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:06:39,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1353099802, now seen corresponding path program 161 times [2022-01-31 23:06:39,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:06:39,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439144097] [2022-01-31 23:06:39,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:06:39,464 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:06:39,464 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:06:39,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:06:39,476 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:06:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:06:47,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:06:47,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:06:47,645 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 23:06:47,645 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:06:47,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439144097] [2022-01-31 23:06:47,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1439144097] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:06:47,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:06:47,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [166] imperfect sequences [] total 166 [2022-01-31 23:06:47,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62401509] [2022-01-31 23:06:47,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:06:47,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 166 states [2022-01-31 23:06:47,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:06:47,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2022-01-31 23:06:47,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13532, Invalid=13858, Unknown=0, NotChecked=0, Total=27390 [2022-01-31 23:06:47,649 INFO L87 Difference]: Start difference. First operand 824 states and 1149 transitions. Second operand has 166 states, 166 states have (on average 3.9578313253012047) internal successors, (657), 165 states have internal predecessors, (657), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:06:52,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:06:52,117 INFO L93 Difference]: Finished difference Result 840 states and 1170 transitions. [2022-01-31 23:06:52,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2022-01-31 23:06:52,117 INFO L78 Accepts]: Start accepts. Automaton has has 166 states, 166 states have (on average 3.9578313253012047) internal successors, (657), 165 states have internal predecessors, (657), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 660 [2022-01-31 23:06:52,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:06:52,118 INFO L225 Difference]: With dead ends: 840 [2022-01-31 23:06:52,118 INFO L226 Difference]: Without dead ends: 833 [2022-01-31 23:06:52,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=13532, Invalid=13858, Unknown=0, NotChecked=0, Total=27390 [2022-01-31 23:06:52,119 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2526 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2526 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:06:52,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2526 Valid, 932 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:06:52,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2022-01-31 23:06:52,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 829. [2022-01-31 23:06:52,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 825 states have (on average 1.3975757575757575) internal successors, (1153), 825 states have internal predecessors, (1153), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:06:52,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1156 transitions. [2022-01-31 23:06:52,128 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1156 transitions. Word has length 660 [2022-01-31 23:06:52,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:06:52,128 INFO L470 AbstractCegarLoop]: Abstraction has 829 states and 1156 transitions. [2022-01-31 23:06:52,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 166 states, 166 states have (on average 3.9578313253012047) internal successors, (657), 165 states have internal predecessors, (657), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:06:52,128 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1156 transitions. [2022-01-31 23:06:52,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2022-01-31 23:06:52,131 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:06:52,131 INFO L514 BasicCegarLoop]: trace histogram [163, 163, 163, 163, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:06:52,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2022-01-31 23:06:52,131 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:06:52,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:06:52,132 INFO L85 PathProgramCache]: Analyzing trace with hash -326574419, now seen corresponding path program 162 times [2022-01-31 23:06:52,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:06:52,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205601812] [2022-01-31 23:06:52,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:06:52,140 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:06:52,140 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:06:52,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:06:52,155 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:06:52,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:07:00,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:07:00,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:07:00,267 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 23:07:00,267 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:07:00,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205601812] [2022-01-31 23:07:00,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1205601812] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:07:00,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:07:00,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [167] imperfect sequences [] total 167 [2022-01-31 23:07:00,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793650178] [2022-01-31 23:07:00,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:07:00,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 167 states [2022-01-31 23:07:00,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:07:00,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2022-01-31 23:07:00,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13697, Invalid=14025, Unknown=0, NotChecked=0, Total=27722 [2022-01-31 23:07:00,272 INFO L87 Difference]: Start difference. First operand 829 states and 1156 transitions. Second operand has 167 states, 167 states have (on average 3.9580838323353293) internal successors, (661), 166 states have internal predecessors, (661), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:07:04,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:07:04,439 INFO L93 Difference]: Finished difference Result 845 states and 1177 transitions. [2022-01-31 23:07:04,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2022-01-31 23:07:04,440 INFO L78 Accepts]: Start accepts. Automaton has has 167 states, 167 states have (on average 3.9580838323353293) internal successors, (661), 166 states have internal predecessors, (661), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 664 [2022-01-31 23:07:04,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:07:04,441 INFO L225 Difference]: With dead ends: 845 [2022-01-31 23:07:04,441 INFO L226 Difference]: Without dead ends: 838 [2022-01-31 23:07:04,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=13697, Invalid=14025, Unknown=0, NotChecked=0, Total=27722 [2022-01-31 23:07:04,442 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2721 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2721 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:07:04,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2721 Valid, 913 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:07:04,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2022-01-31 23:07:04,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 834. [2022-01-31 23:07:04,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 830 states have (on average 1.3975903614457832) internal successors, (1160), 830 states have internal predecessors, (1160), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:07:04,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1163 transitions. [2022-01-31 23:07:04,451 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1163 transitions. Word has length 664 [2022-01-31 23:07:04,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:07:04,451 INFO L470 AbstractCegarLoop]: Abstraction has 834 states and 1163 transitions. [2022-01-31 23:07:04,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 167 states, 167 states have (on average 3.9580838323353293) internal successors, (661), 166 states have internal predecessors, (661), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:07:04,451 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1163 transitions. [2022-01-31 23:07:04,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2022-01-31 23:07:04,454 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:07:04,454 INFO L514 BasicCegarLoop]: trace histogram [164, 164, 164, 164, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:07:04,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2022-01-31 23:07:04,454 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:07:04,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:07:04,454 INFO L85 PathProgramCache]: Analyzing trace with hash -2119652364, now seen corresponding path program 163 times [2022-01-31 23:07:04,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:07:04,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492933168] [2022-01-31 23:07:04,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:07:04,456 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:07:04,456 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:07:04,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:07:04,467 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:07:04,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:07:12,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:07:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:07:12,573 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 23:07:12,573 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:07:12,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492933168] [2022-01-31 23:07:12,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [492933168] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:07:12,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:07:12,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [168] imperfect sequences [] total 168 [2022-01-31 23:07:12,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710725907] [2022-01-31 23:07:12,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:07:12,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 168 states [2022-01-31 23:07:12,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:07:12,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2022-01-31 23:07:12,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13863, Invalid=14193, Unknown=0, NotChecked=0, Total=28056 [2022-01-31 23:07:12,577 INFO L87 Difference]: Start difference. First operand 834 states and 1163 transitions. Second operand has 168 states, 168 states have (on average 3.9583333333333335) internal successors, (665), 167 states have internal predecessors, (665), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:07:16,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:07:16,918 INFO L93 Difference]: Finished difference Result 850 states and 1184 transitions. [2022-01-31 23:07:16,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2022-01-31 23:07:16,919 INFO L78 Accepts]: Start accepts. Automaton has has 168 states, 168 states have (on average 3.9583333333333335) internal successors, (665), 167 states have internal predecessors, (665), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 668 [2022-01-31 23:07:16,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:07:16,920 INFO L225 Difference]: With dead ends: 850 [2022-01-31 23:07:16,920 INFO L226 Difference]: Without dead ends: 843 [2022-01-31 23:07:16,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=13863, Invalid=14193, Unknown=0, NotChecked=0, Total=28056 [2022-01-31 23:07:16,921 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2394 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2394 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:07:16,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2394 Valid, 942 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:07:16,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-01-31 23:07:16,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 839. [2022-01-31 23:07:16,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 835 states have (on average 1.3976047904191617) internal successors, (1167), 835 states have internal predecessors, (1167), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:07:16,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1170 transitions. [2022-01-31 23:07:16,933 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1170 transitions. Word has length 668 [2022-01-31 23:07:16,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:07:16,934 INFO L470 AbstractCegarLoop]: Abstraction has 839 states and 1170 transitions. [2022-01-31 23:07:16,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 168 states, 168 states have (on average 3.9583333333333335) internal successors, (665), 167 states have internal predecessors, (665), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:07:16,934 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1170 transitions. [2022-01-31 23:07:16,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2022-01-31 23:07:16,938 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:07:16,938 INFO L514 BasicCegarLoop]: trace histogram [165, 165, 165, 165, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:07:16,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2022-01-31 23:07:16,938 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:07:16,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:07:16,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1140687429, now seen corresponding path program 164 times [2022-01-31 23:07:16,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:07:16,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273588832] [2022-01-31 23:07:16,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:07:16,941 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:07:16,941 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:07:16,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:07:16,956 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:07:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat