/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/Muller_Kahan.c.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 22:52:36,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 22:52:36,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 22:52:36,257 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 22:52:36,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 22:52:36,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 22:52:36,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 22:52:36,288 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 22:52:36,295 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 22:52:36,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 22:52:36,297 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 22:52:36,297 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 22:52:36,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 22:52:36,297 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 22:52:36,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 22:52:36,298 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 22:52:36,298 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 22:52:36,298 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 22:52:36,298 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 22:52:36,298 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 22:52:36,299 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 22:52:36,299 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 22:52:36,303 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 22:52:36,303 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 22:52:36,303 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 22:52:36,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 22:52:36,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 22:52:36,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 22:52:36,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 22:52:36,304 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 22:52:36,304 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 22:52:36,304 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 22:52:36,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 22:52:36,590 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 22:52:36,592 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 22:52:36,593 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 22:52:36,594 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 22:52:36,596 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/Muller_Kahan.c.p+cfa-reducer.c [2022-01-31 22:52:36,658 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45720a430/7f1d2ae544b14311999144f2a33bcaeb/FLAG3372c89c5 [2022-01-31 22:52:37,024 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 22:52:37,025 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/Muller_Kahan.c.p+cfa-reducer.c [2022-01-31 22:52:37,034 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45720a430/7f1d2ae544b14311999144f2a33bcaeb/FLAG3372c89c5 [2022-01-31 22:52:37,441 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45720a430/7f1d2ae544b14311999144f2a33bcaeb [2022-01-31 22:52:37,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 22:52:37,447 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 22:52:37,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 22:52:37,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 22:52:37,456 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 22:52:37,457 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:52:37" (1/1) ... [2022-01-31 22:52:37,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cdd80d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:52:37, skipping insertion in model container [2022-01-31 22:52:37,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:52:37" (1/1) ... [2022-01-31 22:52:37,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 22:52:37,476 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 22:52:37,632 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/Muller_Kahan.c.p+cfa-reducer.c[964,977] [2022-01-31 22:52:37,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 22:52:37,642 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 22:52:37,654 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/Muller_Kahan.c.p+cfa-reducer.c[964,977] [2022-01-31 22:52:37,655 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 22:52:37,665 INFO L208 MainTranslator]: Completed translation [2022-01-31 22:52:37,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:52:37 WrapperNode [2022-01-31 22:52:37,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 22:52:37,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 22:52:37,667 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 22:52:37,667 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 22:52:37,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:52:37" (1/1) ... [2022-01-31 22:52:37,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:52:37" (1/1) ... [2022-01-31 22:52:37,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:52:37" (1/1) ... [2022-01-31 22:52:37,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:52:37" (1/1) ... [2022-01-31 22:52:37,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:52:37" (1/1) ... [2022-01-31 22:52:37,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:52:37" (1/1) ... [2022-01-31 22:52:37,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:52:37" (1/1) ... [2022-01-31 22:52:37,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 22:52:37,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 22:52:37,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 22:52:37,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 22:52:37,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:52:37" (1/1) ... [2022-01-31 22:52:37,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 22:52:37,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 22:52:37,729 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 22:52:37,740 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 22:52:37,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 22:52:37,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 22:52:37,763 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 22:52:37,763 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 22:52:37,763 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 22:52:37,763 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 22:52:37,764 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 22:52:37,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 22:52:37,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 22:52:37,764 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 22:52:37,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 22:52:37,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 22:52:37,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 22:52:37,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 22:52:37,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 22:52:37,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 22:52:37,817 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 22:52:37,819 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 22:52:37,951 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 22:52:37,956 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 22:52:37,956 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-31 22:52:37,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:52:37 BoogieIcfgContainer [2022-01-31 22:52:37,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 22:52:37,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 22:52:37,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 22:52:37,990 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 22:52:37,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 10:52:37" (1/3) ... [2022-01-31 22:52:37,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6683501e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:52:37, skipping insertion in model container [2022-01-31 22:52:37,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:52:37" (2/3) ... [2022-01-31 22:52:37,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6683501e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:52:37, skipping insertion in model container [2022-01-31 22:52:37,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:52:37" (3/3) ... [2022-01-31 22:52:37,993 INFO L111 eAbstractionObserver]: Analyzing ICFG Muller_Kahan.c.p+cfa-reducer.c [2022-01-31 22:52:38,014 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 22:52:38,014 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 22:52:38,051 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 22:52:38,067 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 22:52:38,068 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 22:52:38,096 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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 22:52:38,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-31 22:52:38,102 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:38,103 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:38,103 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:38,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:38,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1761771401, now seen corresponding path program 1 times [2022-01-31 22:52:38,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:38,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227187401] [2022-01-31 22:52:38,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:38,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:38,188 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:38,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:38,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:38,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:52:38,349 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:38,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227187401] [2022-01-31 22:52:38,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [227187401] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:38,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:38,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 22:52:38,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87223868] [2022-01-31 22:52:38,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:38,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 22:52:38,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:38,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 22:52:38,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 22:52:38,389 INFO L87 Difference]: Start difference. First operand has 18 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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 22:52:38,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:38,470 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2022-01-31 22:52:38,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 22:52:38,473 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 22:52:38,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:38,478 INFO L225 Difference]: With dead ends: 30 [2022-01-31 22:52:38,479 INFO L226 Difference]: Without dead ends: 15 [2022-01-31 22:52:38,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-31 22:52:38,484 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 13 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:38,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 27 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:52:38,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-01-31 22:52:38,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-01-31 22:52:38,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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 22:52:38,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-01-31 22:52:38,518 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 12 [2022-01-31 22:52:38,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:38,518 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-01-31 22:52:38,523 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 22:52:38,523 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-01-31 22:52:38,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-31 22:52:38,524 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:38,524 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:38,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 22:52:38,525 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:38,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:38,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1211578030, now seen corresponding path program 1 times [2022-01-31 22:52:38,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:38,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929455084] [2022-01-31 22:52:38,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:38,555 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:52:38,555 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:52:38,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:38,557 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:38,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:38,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:38,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:52:38,662 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:38,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929455084] [2022-01-31 22:52:38,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1929455084] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:38,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:38,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 22:52:38,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723510194] [2022-01-31 22:52:38,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:38,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 22:52:38,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:38,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 22:52:38,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 22:52:38,665 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:38,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:38,710 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2022-01-31 22:52:38,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 22:52:38,711 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 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 13 [2022-01-31 22:52:38,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:38,712 INFO L225 Difference]: With dead ends: 23 [2022-01-31 22:52:38,712 INFO L226 Difference]: Without dead ends: 16 [2022-01-31 22:52:38,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-31 22:52:38,716 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 11 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:38,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 22 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:52:38,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-01-31 22:52:38,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-01-31 22:52:38,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 22:52:38,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-01-31 22:52:38,722 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 13 [2022-01-31 22:52:38,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:38,722 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-01-31 22:52:38,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:38,723 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-01-31 22:52:38,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-31 22:52:38,723 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:38,723 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:38,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 22:52:38,724 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:38,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:38,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1335452713, now seen corresponding path program 2 times [2022-01-31 22:52:38,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:38,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853565756] [2022-01-31 22:52:38,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:38,727 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:52:38,727 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:52:38,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:38,733 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:38,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:38,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:38,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:38,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:52:38,823 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:38,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853565756] [2022-01-31 22:52:38,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [853565756] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:38,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:38,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 22:52:38,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530147223] [2022-01-31 22:52:38,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:38,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 22:52:38,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:38,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 22:52:38,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-31 22:52:38,827 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:38,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:38,900 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-01-31 22:52:38,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 22:52:38,901 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 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 14 [2022-01-31 22:52:38,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:38,902 INFO L225 Difference]: With dead ends: 20 [2022-01-31 22:52:38,902 INFO L226 Difference]: Without dead ends: 16 [2022-01-31 22:52:38,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-31 22:52:38,908 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 13 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:38,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 27 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:52:38,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-01-31 22:52:38,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-01-31 22:52:38,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 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 22:52:38,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-01-31 22:52:38,917 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 14 [2022-01-31 22:52:38,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:38,917 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-01-31 22:52:38,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:38,917 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-01-31 22:52:38,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-31 22:52:38,918 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:38,918 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:38,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 22:52:38,918 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:38,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:38,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1350556750, now seen corresponding path program 1 times [2022-01-31 22:52:38,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:38,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025636114] [2022-01-31 22:52:38,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:38,921 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:52:38,921 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:52:38,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:38,922 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:38,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:38,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:38,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:52:38,971 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:38,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025636114] [2022-01-31 22:52:38,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2025636114] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:38,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:38,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 22:52:38,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681278704] [2022-01-31 22:52:38,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:38,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 22:52:38,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:38,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 22:52:38,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-31 22:52:38,974 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:39,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:39,037 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2022-01-31 22:52:39,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 22:52:39,037 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 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 14 [2022-01-31 22:52:39,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:39,038 INFO L225 Difference]: With dead ends: 24 [2022-01-31 22:52:39,038 INFO L226 Difference]: Without dead ends: 17 [2022-01-31 22:52:39,039 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 22:52:39,040 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:39,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 26 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:52:39,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-01-31 22:52:39,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-01-31 22:52:39,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 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 22:52:39,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2022-01-31 22:52:39,044 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 14 [2022-01-31 22:52:39,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:39,045 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2022-01-31 22:52:39,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:39,045 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2022-01-31 22:52:39,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-31 22:52:39,046 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:39,046 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:39,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-31 22:52:39,046 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:39,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:39,047 INFO L85 PathProgramCache]: Analyzing trace with hash 895704627, now seen corresponding path program 2 times [2022-01-31 22:52:39,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:39,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2091875455] [2022-01-31 22:52:39,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:39,049 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:52:39,049 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:52:39,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:39,050 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:39,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:39,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:39,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:52:39,111 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:39,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2091875455] [2022-01-31 22:52:39,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2091875455] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:39,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:39,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-31 22:52:39,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539391517] [2022-01-31 22:52:39,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:39,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-31 22:52:39,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:39,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-31 22:52:39,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-31 22:52:39,113 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:39,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:39,180 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-01-31 22:52:39,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 22:52:39,181 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 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 15 [2022-01-31 22:52:39,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:39,181 INFO L225 Difference]: With dead ends: 25 [2022-01-31 22:52:39,182 INFO L226 Difference]: Without dead ends: 18 [2022-01-31 22:52:39,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-01-31 22:52:39,183 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:39,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 36 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:52:39,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-01-31 22:52:39,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-01-31 22:52:39,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 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 22:52:39,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-01-31 22:52:39,188 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2022-01-31 22:52:39,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:39,188 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-01-31 22:52:39,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:39,188 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-01-31 22:52:39,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-31 22:52:39,189 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:39,189 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:39,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-31 22:52:39,189 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:39,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:39,190 INFO L85 PathProgramCache]: Analyzing trace with hash -319809298, now seen corresponding path program 3 times [2022-01-31 22:52:39,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:39,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520947914] [2022-01-31 22:52:39,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:39,192 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:52:39,192 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:52:39,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:39,193 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:39,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:39,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:39,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:52:39,253 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:39,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520947914] [2022-01-31 22:52:39,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1520947914] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:39,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:39,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 22:52:39,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411826766] [2022-01-31 22:52:39,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:39,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 22:52:39,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:39,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 22:52:39,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-31 22:52:39,255 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 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 22:52:39,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:39,355 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2022-01-31 22:52:39,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 22:52:39,356 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 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 22:52:39,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:39,357 INFO L225 Difference]: With dead ends: 26 [2022-01-31 22:52:39,357 INFO L226 Difference]: Without dead ends: 19 [2022-01-31 22:52:39,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-01-31 22:52:39,358 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:39,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 31 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:52:39,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-01-31 22:52:39,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-01-31 22:52:39,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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 22:52:39,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-01-31 22:52:39,363 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 16 [2022-01-31 22:52:39,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:39,363 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-01-31 22:52:39,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 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 22:52:39,363 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-01-31 22:52:39,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-31 22:52:39,364 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:39,364 INFO L514 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:39,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-31 22:52:39,364 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:39,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:39,365 INFO L85 PathProgramCache]: Analyzing trace with hash 653964691, now seen corresponding path program 4 times [2022-01-31 22:52:39,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:39,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163167656] [2022-01-31 22:52:39,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:39,367 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:52:39,367 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:52:39,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:39,368 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:39,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:39,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:39,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:52:39,438 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:39,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163167656] [2022-01-31 22:52:39,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1163167656] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:39,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:39,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-31 22:52:39,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812786888] [2022-01-31 22:52:39,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:39,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 22:52:39,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:39,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 22:52:39,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-31 22:52:39,440 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:39,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:39,547 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2022-01-31 22:52:39,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-31 22:52:39,547 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (2), 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 17 [2022-01-31 22:52:39,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:39,548 INFO L225 Difference]: With dead ends: 27 [2022-01-31 22:52:39,548 INFO L226 Difference]: Without dead ends: 20 [2022-01-31 22:52:39,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2022-01-31 22:52:39,549 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:39,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 31 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:52:39,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-01-31 22:52:39,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-01-31 22:52:39,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 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 22:52:39,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-01-31 22:52:39,554 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 17 [2022-01-31 22:52:39,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:39,554 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-01-31 22:52:39,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:39,555 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-01-31 22:52:39,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-31 22:52:39,555 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:39,555 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:39,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-31 22:52:39,556 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:39,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:39,556 INFO L85 PathProgramCache]: Analyzing trace with hash 776187278, now seen corresponding path program 5 times [2022-01-31 22:52:39,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:39,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599164809] [2022-01-31 22:52:39,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:39,558 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:52:39,558 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:52:39,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:39,559 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:39,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:39,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:39,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:52:39,639 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:39,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599164809] [2022-01-31 22:52:39,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1599164809] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:39,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:39,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-31 22:52:39,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466505221] [2022-01-31 22:52:39,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:39,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 22:52:39,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:39,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 22:52:39,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-01-31 22:52:39,641 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 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 22:52:39,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:39,743 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2022-01-31 22:52:39,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-31 22:52:39,744 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 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 18 [2022-01-31 22:52:39,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:39,745 INFO L225 Difference]: With dead ends: 28 [2022-01-31 22:52:39,745 INFO L226 Difference]: Without dead ends: 21 [2022-01-31 22:52:39,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2022-01-31 22:52:39,746 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:39,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 26 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:52:39,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-01-31 22:52:39,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-01-31 22:52:39,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 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 22:52:39,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2022-01-31 22:52:39,750 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 18 [2022-01-31 22:52:39,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:39,750 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2022-01-31 22:52:39,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 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 22:52:39,750 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2022-01-31 22:52:39,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-31 22:52:39,751 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:39,751 INFO L514 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:39,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-31 22:52:39,751 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:39,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:39,751 INFO L85 PathProgramCache]: Analyzing trace with hash 270120179, now seen corresponding path program 6 times [2022-01-31 22:52:39,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:39,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366971410] [2022-01-31 22:52:39,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:39,753 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:52:39,753 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:52:39,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:39,754 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:39,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:39,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:39,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:52:39,838 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:39,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366971410] [2022-01-31 22:52:39,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1366971410] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:39,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:39,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-31 22:52:39,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674259826] [2022-01-31 22:52:39,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:39,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 22:52:39,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:39,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 22:52:39,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2022-01-31 22:52:39,839 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:39,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:39,968 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2022-01-31 22:52:39,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-31 22:52:39,969 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 1 states have call successors, (2), 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 19 [2022-01-31 22:52:39,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:39,969 INFO L225 Difference]: With dead ends: 29 [2022-01-31 22:52:39,969 INFO L226 Difference]: Without dead ends: 22 [2022-01-31 22:52:39,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2022-01-31 22:52:39,972 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:39,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 26 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:52:39,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-01-31 22:52:39,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-01-31 22:52:39,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 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 22:52:39,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2022-01-31 22:52:39,978 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 19 [2022-01-31 22:52:39,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:39,978 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2022-01-31 22:52:39,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:39,978 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-01-31 22:52:39,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-31 22:52:39,979 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:39,979 INFO L514 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:39,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-31 22:52:39,979 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:39,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:39,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1761909294, now seen corresponding path program 7 times [2022-01-31 22:52:39,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:39,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492997008] [2022-01-31 22:52:39,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:39,982 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:52:39,982 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:52:39,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:39,983 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:40,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:40,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:40,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:40,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:52:40,086 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:40,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492997008] [2022-01-31 22:52:40,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [492997008] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:40,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:40,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-31 22:52:40,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196546144] [2022-01-31 22:52:40,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:40,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 22:52:40,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:40,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 22:52:40,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2022-01-31 22:52:40,088 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 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 22:52:40,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:40,222 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2022-01-31 22:52:40,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-31 22:52:40,222 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 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 22:52:40,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:40,223 INFO L225 Difference]: With dead ends: 30 [2022-01-31 22:52:40,223 INFO L226 Difference]: Without dead ends: 23 [2022-01-31 22:52:40,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2022-01-31 22:52:40,225 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:40,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 26 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:52:40,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-01-31 22:52:40,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-01-31 22:52:40,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 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 22:52:40,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2022-01-31 22:52:40,234 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 20 [2022-01-31 22:52:40,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:40,236 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2022-01-31 22:52:40,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 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 22:52:40,236 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2022-01-31 22:52:40,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-31 22:52:40,237 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:40,242 INFO L514 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:40,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-31 22:52:40,243 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:40,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:40,244 INFO L85 PathProgramCache]: Analyzing trace with hash 762731603, now seen corresponding path program 8 times [2022-01-31 22:52:40,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:40,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351198252] [2022-01-31 22:52:40,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:40,246 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:52:40,246 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:52:40,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:40,248 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:40,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:40,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:40,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:40,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:52:40,370 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:40,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351198252] [2022-01-31 22:52:40,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1351198252] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:40,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:40,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 22:52:40,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041597909] [2022-01-31 22:52:40,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:40,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 22:52:40,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:40,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 22:52:40,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2022-01-31 22:52:40,372 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:40,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:40,507 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2022-01-31 22:52:40,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 22:52:40,507 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 1 states have call successors, (2), 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 21 [2022-01-31 22:52:40,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:40,508 INFO L225 Difference]: With dead ends: 31 [2022-01-31 22:52:40,508 INFO L226 Difference]: Without dead ends: 24 [2022-01-31 22:52:40,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2022-01-31 22:52:40,509 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:40,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 21 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:52:40,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-01-31 22:52:40,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-01-31 22:52:40,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 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 22:52:40,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2022-01-31 22:52:40,513 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 21 [2022-01-31 22:52:40,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:40,514 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2022-01-31 22:52:40,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:40,514 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2022-01-31 22:52:40,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-31 22:52:40,514 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:40,514 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:40,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-31 22:52:40,515 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:40,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:40,515 INFO L85 PathProgramCache]: Analyzing trace with hash -147005746, now seen corresponding path program 9 times [2022-01-31 22:52:40,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:40,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594078279] [2022-01-31 22:52:40,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:40,517 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:52:40,517 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:52:40,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:40,518 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:40,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:40,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:40,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:40,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:52:40,638 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:40,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594078279] [2022-01-31 22:52:40,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1594078279] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:40,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:40,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-31 22:52:40,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266107246] [2022-01-31 22:52:40,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:40,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-31 22:52:40,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:40,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-31 22:52:40,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2022-01-31 22:52:40,640 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:40,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:40,800 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2022-01-31 22:52:40,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-31 22:52:40,800 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 states have internal predecessors, (19), 1 states have call successors, (2), 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 22 [2022-01-31 22:52:40,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:40,801 INFO L225 Difference]: With dead ends: 32 [2022-01-31 22:52:40,801 INFO L226 Difference]: Without dead ends: 25 [2022-01-31 22:52:40,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2022-01-31 22:52:40,802 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:40,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 26 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:52:40,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-01-31 22:52:40,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-01-31 22:52:40,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 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 22:52:40,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2022-01-31 22:52:40,806 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 22 [2022-01-31 22:52:40,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:40,806 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2022-01-31 22:52:40,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:40,806 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2022-01-31 22:52:40,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-31 22:52:40,807 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:40,807 INFO L514 BasicCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:40,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-31 22:52:40,807 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:40,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:40,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1715907507, now seen corresponding path program 10 times [2022-01-31 22:52:40,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:40,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118263375] [2022-01-31 22:52:40,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:40,809 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:52:40,809 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:52:40,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:40,810 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:40,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:40,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:40,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:52:40,933 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:40,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118263375] [2022-01-31 22:52:40,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1118263375] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:40,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:40,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-31 22:52:40,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701905635] [2022-01-31 22:52:40,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:40,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 22:52:40,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:40,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 22:52:40,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2022-01-31 22:52:40,935 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 15 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 14 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:41,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:41,097 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2022-01-31 22:52:41,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-31 22:52:41,099 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 14 states have internal predecessors, (20), 1 states have call successors, (2), 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 23 [2022-01-31 22:52:41,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:41,099 INFO L225 Difference]: With dead ends: 33 [2022-01-31 22:52:41,099 INFO L226 Difference]: Without dead ends: 26 [2022-01-31 22:52:41,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2022-01-31 22:52:41,100 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:41,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 26 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:52:41,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-01-31 22:52:41,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-01-31 22:52:41,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 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 22:52:41,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2022-01-31 22:52:41,104 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 23 [2022-01-31 22:52:41,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:41,105 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2022-01-31 22:52:41,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 14 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:41,105 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2022-01-31 22:52:41,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-31 22:52:41,105 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:41,105 INFO L514 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:41,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-31 22:52:41,106 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:41,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:41,106 INFO L85 PathProgramCache]: Analyzing trace with hash -663323794, now seen corresponding path program 11 times [2022-01-31 22:52:41,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:41,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788724845] [2022-01-31 22:52:41,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:41,108 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:52:41,108 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:52:41,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:41,109 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:41,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:41,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:41,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:52:41,236 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:41,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788724845] [2022-01-31 22:52:41,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [788724845] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:41,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:41,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-31 22:52:41,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488133844] [2022-01-31 22:52:41,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:41,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-31 22:52:41,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:41,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-31 22:52:41,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2022-01-31 22:52:41,238 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 16 states, 16 states have (on average 1.3125) internal successors, (21), 15 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 22:52:41,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:41,420 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2022-01-31 22:52:41,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-31 22:52:41,420 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.3125) internal successors, (21), 15 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 22:52:41,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:41,421 INFO L225 Difference]: With dead ends: 34 [2022-01-31 22:52:41,421 INFO L226 Difference]: Without dead ends: 27 [2022-01-31 22:52:41,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2022-01-31 22:52:41,422 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:41,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 26 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:52:41,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-31 22:52:41,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-01-31 22:52:41,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 states have internal predecessors, (25), 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 22:52:41,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2022-01-31 22:52:41,425 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 24 [2022-01-31 22:52:41,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:41,426 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2022-01-31 22:52:41,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.3125) internal successors, (21), 15 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 22:52:41,426 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2022-01-31 22:52:41,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-31 22:52:41,426 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:41,426 INFO L514 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:41,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-31 22:52:41,427 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:41,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:41,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1405050093, now seen corresponding path program 12 times [2022-01-31 22:52:41,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:41,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979263098] [2022-01-31 22:52:41,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:41,428 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:52:41,428 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:52:41,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:41,429 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:41,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:41,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:41,564 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 22:52:41,564 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:41,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979263098] [2022-01-31 22:52:41,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1979263098] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:41,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:41,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-31 22:52:41,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745924670] [2022-01-31 22:52:41,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:41,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-31 22:52:41,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:41,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-31 22:52:41,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2022-01-31 22:52:41,566 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:41,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:41,776 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2022-01-31 22:52:41,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-31 22:52:41,777 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 1 states have call successors, (2), 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 25 [2022-01-31 22:52:41,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:41,777 INFO L225 Difference]: With dead ends: 35 [2022-01-31 22:52:41,777 INFO L226 Difference]: Without dead ends: 28 [2022-01-31 22:52:41,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2022-01-31 22:52:41,778 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:41,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 26 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:52:41,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-01-31 22:52:41,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-01-31 22:52:41,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 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 22:52:41,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2022-01-31 22:52:41,782 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 25 [2022-01-31 22:52:41,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:41,782 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2022-01-31 22:52:41,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:41,783 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2022-01-31 22:52:41,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-31 22:52:41,783 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:41,783 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:41,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-31 22:52:41,784 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:41,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:41,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1371238414, now seen corresponding path program 13 times [2022-01-31 22:52:41,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:41,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355839751] [2022-01-31 22:52:41,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:41,785 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:52:41,785 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:52:41,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:41,786 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:41,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:41,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:52:41,940 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:41,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355839751] [2022-01-31 22:52:41,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1355839751] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:41,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:41,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-31 22:52:41,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943046190] [2022-01-31 22:52:41,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:41,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-31 22:52:41,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:41,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-31 22:52:41,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2022-01-31 22:52:41,941 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 18 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 17 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:42,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:42,155 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2022-01-31 22:52:42,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-31 22:52:42,155 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 17 states have internal predecessors, (23), 1 states have call successors, (2), 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 26 [2022-01-31 22:52:42,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:42,155 INFO L225 Difference]: With dead ends: 36 [2022-01-31 22:52:42,156 INFO L226 Difference]: Without dead ends: 29 [2022-01-31 22:52:42,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2022-01-31 22:52:42,157 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:42,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 31 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:52:42,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-01-31 22:52:42,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-01-31 22:52:42,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 25 states have (on average 1.08) internal successors, (27), 25 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 22:52:42,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2022-01-31 22:52:42,161 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 26 [2022-01-31 22:52:42,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:42,161 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2022-01-31 22:52:42,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 17 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:42,161 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2022-01-31 22:52:42,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-31 22:52:42,165 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:42,165 INFO L514 BasicCegarLoop]: trace histogram [15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:42,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-31 22:52:42,166 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:42,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:42,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1536836211, now seen corresponding path program 14 times [2022-01-31 22:52:42,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:42,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856431776] [2022-01-31 22:52:42,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:42,168 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:52:42,168 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:52:42,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:42,170 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:42,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:42,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:42,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:42,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:52:42,336 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:42,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856431776] [2022-01-31 22:52:42,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1856431776] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:42,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:42,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-31 22:52:42,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578694030] [2022-01-31 22:52:42,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:42,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-31 22:52:42,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:42,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-31 22:52:42,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2022-01-31 22:52:42,338 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 19 states, 19 states have (on average 1.263157894736842) internal successors, (24), 18 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:42,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:42,568 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2022-01-31 22:52:42,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-31 22:52:42,569 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.263157894736842) internal successors, (24), 18 states have internal predecessors, (24), 1 states have call successors, (2), 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 27 [2022-01-31 22:52:42,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:42,570 INFO L225 Difference]: With dead ends: 37 [2022-01-31 22:52:42,570 INFO L226 Difference]: Without dead ends: 30 [2022-01-31 22:52:42,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 22:52:42,571 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:42,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 31 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:52:42,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-01-31 22:52:42,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-01-31 22:52:42,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 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 22:52:42,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2022-01-31 22:52:42,580 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 27 [2022-01-31 22:52:42,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:42,581 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2022-01-31 22:52:42,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.263157894736842) internal successors, (24), 18 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:42,581 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2022-01-31 22:52:42,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-31 22:52:42,582 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:42,582 INFO L514 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:42,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-31 22:52:42,582 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:42,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:42,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1919566674, now seen corresponding path program 15 times [2022-01-31 22:52:42,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:42,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826669672] [2022-01-31 22:52:42,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:42,585 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:52:42,585 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:52:42,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:42,586 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:42,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:42,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:52:42,798 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:42,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826669672] [2022-01-31 22:52:42,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1826669672] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:42,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:42,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-31 22:52:42,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231522643] [2022-01-31 22:52:42,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:42,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-31 22:52:42,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:42,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-31 22:52:42,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2022-01-31 22:52:42,799 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 20 states, 20 states have (on average 1.25) internal successors, (25), 19 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 22:52:43,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:43,085 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2022-01-31 22:52:43,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-31 22:52:43,085 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.25) internal successors, (25), 19 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 22:52:43,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:43,086 INFO L225 Difference]: With dead ends: 38 [2022-01-31 22:52:43,086 INFO L226 Difference]: Without dead ends: 31 [2022-01-31 22:52:43,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 22:52:43,087 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:43,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 31 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:52:43,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-31 22:52:43,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-01-31 22:52:43,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 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 22:52:43,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2022-01-31 22:52:43,091 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 28 [2022-01-31 22:52:43,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:43,091 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2022-01-31 22:52:43,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.25) internal successors, (25), 19 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 22:52:43,091 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2022-01-31 22:52:43,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-31 22:52:43,091 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:43,092 INFO L514 BasicCegarLoop]: trace histogram [17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:43,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-31 22:52:43,092 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:43,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:43,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1693873709, now seen corresponding path program 16 times [2022-01-31 22:52:43,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:43,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780888674] [2022-01-31 22:52:43,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:43,093 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:52:43,094 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:52:43,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:43,094 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:43,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:43,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:43,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:52:43,284 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:43,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780888674] [2022-01-31 22:52:43,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1780888674] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:43,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:43,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-31 22:52:43,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804104461] [2022-01-31 22:52:43,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:43,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-31 22:52:43,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:43,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-31 22:52:43,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2022-01-31 22:52:43,285 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 21 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 20 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:43,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:43,560 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2022-01-31 22:52:43,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-31 22:52:43,560 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 20 states have internal predecessors, (26), 1 states have call successors, (2), 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 29 [2022-01-31 22:52:43,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:43,561 INFO L225 Difference]: With dead ends: 39 [2022-01-31 22:52:43,561 INFO L226 Difference]: Without dead ends: 32 [2022-01-31 22:52:43,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 22:52:43,562 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:43,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 36 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:52:43,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-01-31 22:52:43,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-01-31 22:52:43,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 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 22:52:43,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2022-01-31 22:52:43,566 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 29 [2022-01-31 22:52:43,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:43,566 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2022-01-31 22:52:43,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 20 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:43,567 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2022-01-31 22:52:43,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-31 22:52:43,567 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:43,567 INFO L514 BasicCegarLoop]: trace histogram [18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:43,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-31 22:52:43,567 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:43,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:43,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1007640910, now seen corresponding path program 17 times [2022-01-31 22:52:43,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:43,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819839900] [2022-01-31 22:52:43,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:43,569 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:52:43,569 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:52:43,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:43,570 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:43,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:43,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:52:43,754 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:43,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819839900] [2022-01-31 22:52:43,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1819839900] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:43,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:43,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-31 22:52:43,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525342267] [2022-01-31 22:52:43,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:43,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-31 22:52:43,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:43,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-31 22:52:43,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2022-01-31 22:52:43,756 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 22 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 21 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:44,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:44,023 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2022-01-31 22:52:44,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-31 22:52:44,024 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 21 states have internal predecessors, (27), 1 states have call successors, (2), 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 30 [2022-01-31 22:52:44,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:44,024 INFO L225 Difference]: With dead ends: 40 [2022-01-31 22:52:44,024 INFO L226 Difference]: Without dead ends: 33 [2022-01-31 22:52:44,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2022-01-31 22:52:44,026 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:44,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 36 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:52:44,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-31 22:52:44,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-01-31 22:52:44,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 29 states have internal predecessors, (31), 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 22:52:44,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2022-01-31 22:52:44,029 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 30 [2022-01-31 22:52:44,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:44,030 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2022-01-31 22:52:44,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 21 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:44,030 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2022-01-31 22:52:44,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-31 22:52:44,030 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:44,030 INFO L514 BasicCegarLoop]: trace histogram [19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:44,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-31 22:52:44,030 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:44,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:44,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1144751821, now seen corresponding path program 18 times [2022-01-31 22:52:44,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:44,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171370673] [2022-01-31 22:52:44,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:44,032 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:52:44,032 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:52:44,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:44,033 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:44,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:44,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:44,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:52:44,256 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:44,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171370673] [2022-01-31 22:52:44,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [171370673] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:44,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:44,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-01-31 22:52:44,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238492440] [2022-01-31 22:52:44,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:44,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-31 22:52:44,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:44,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-31 22:52:44,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2022-01-31 22:52:44,258 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 23 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 22 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:44,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:44,583 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2022-01-31 22:52:44,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-31 22:52:44,584 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 22 states have internal predecessors, (28), 1 states have call successors, (2), 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 31 [2022-01-31 22:52:44,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:44,584 INFO L225 Difference]: With dead ends: 41 [2022-01-31 22:52:44,584 INFO L226 Difference]: Without dead ends: 34 [2022-01-31 22:52:44,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2022-01-31 22:52:44,586 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:44,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 31 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:52:44,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-01-31 22:52:44,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-01-31 22:52:44,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 30 states have internal predecessors, (32), 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 22:52:44,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2022-01-31 22:52:44,589 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 31 [2022-01-31 22:52:44,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:44,589 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2022-01-31 22:52:44,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 22 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:44,589 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2022-01-31 22:52:44,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-31 22:52:44,590 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:44,590 INFO L514 BasicCegarLoop]: trace histogram [20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:44,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-31 22:52:44,590 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:44,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:44,590 INFO L85 PathProgramCache]: Analyzing trace with hash 850550254, now seen corresponding path program 19 times [2022-01-31 22:52:44,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:44,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855764088] [2022-01-31 22:52:44,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:44,591 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:52:44,592 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:52:44,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:44,592 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:44,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:44,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:44,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:44,838 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 22:52:44,838 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:44,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855764088] [2022-01-31 22:52:44,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [855764088] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:44,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:44,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-01-31 22:52:44,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986028212] [2022-01-31 22:52:44,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:44,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-31 22:52:44,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:44,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-31 22:52:44,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2022-01-31 22:52:44,840 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand has 24 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 23 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 22:52:45,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:45,205 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2022-01-31 22:52:45,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-31 22:52:45,207 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 23 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 22:52:45,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:45,207 INFO L225 Difference]: With dead ends: 42 [2022-01-31 22:52:45,208 INFO L226 Difference]: Without dead ends: 35 [2022-01-31 22:52:45,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 22:52:45,209 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:45,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 56 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:52:45,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-01-31 22:52:45,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-01-31 22:52:45,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 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 22:52:45,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2022-01-31 22:52:45,212 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2022-01-31 22:52:45,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:45,213 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2022-01-31 22:52:45,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 23 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 22:52:45,213 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2022-01-31 22:52:45,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-31 22:52:45,213 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:45,213 INFO L514 BasicCegarLoop]: trace histogram [21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:45,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-31 22:52:45,213 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:45,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:45,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1719594861, now seen corresponding path program 20 times [2022-01-31 22:52:45,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:45,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172503006] [2022-01-31 22:52:45,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:45,215 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:52:45,215 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:52:45,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:45,216 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:45,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:45,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:45,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:52:45,459 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:45,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172503006] [2022-01-31 22:52:45,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [172503006] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:45,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:45,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-01-31 22:52:45,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907453556] [2022-01-31 22:52:45,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:45,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-31 22:52:45,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:45,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-31 22:52:45,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2022-01-31 22:52:45,460 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 25 states, 25 states have (on average 1.2) internal successors, (30), 24 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:45,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:45,811 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2022-01-31 22:52:45,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-31 22:52:45,812 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.2) internal successors, (30), 24 states have internal predecessors, (30), 1 states have call successors, (2), 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 33 [2022-01-31 22:52:45,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:45,812 INFO L225 Difference]: With dead ends: 43 [2022-01-31 22:52:45,812 INFO L226 Difference]: Without dead ends: 36 [2022-01-31 22:52:45,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2022-01-31 22:52:45,813 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:45,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 26 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:52:45,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-01-31 22:52:45,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-01-31 22:52:45,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 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 22:52:45,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2022-01-31 22:52:45,817 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 33 [2022-01-31 22:52:45,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:45,817 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2022-01-31 22:52:45,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.2) internal successors, (30), 24 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:45,817 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2022-01-31 22:52:45,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-31 22:52:45,817 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:45,818 INFO L514 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:45,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-31 22:52:45,818 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:45,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:45,818 INFO L85 PathProgramCache]: Analyzing trace with hash 210285198, now seen corresponding path program 21 times [2022-01-31 22:52:45,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:45,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768683541] [2022-01-31 22:52:45,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:45,819 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:52:45,819 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:52:45,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:45,820 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:45,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:46,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:46,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:52:46,095 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:46,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768683541] [2022-01-31 22:52:46,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1768683541] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:46,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:46,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-31 22:52:46,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434755743] [2022-01-31 22:52:46,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:46,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-31 22:52:46,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:46,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-31 22:52:46,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2022-01-31 22:52:46,096 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 26 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 25 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:46,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:46,501 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2022-01-31 22:52:46,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-31 22:52:46,501 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 25 states have internal predecessors, (31), 1 states have call successors, (2), 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 34 [2022-01-31 22:52:46,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:46,501 INFO L225 Difference]: With dead ends: 44 [2022-01-31 22:52:46,502 INFO L226 Difference]: Without dead ends: 37 [2022-01-31 22:52:46,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 22:52:46,503 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:46,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 41 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:52:46,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-01-31 22:52:46,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-01-31 22:52:46,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 33 states have internal predecessors, (35), 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 22:52:46,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2022-01-31 22:52:46,506 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 34 [2022-01-31 22:52:46,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:46,506 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2022-01-31 22:52:46,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 25 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:46,507 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2022-01-31 22:52:46,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-31 22:52:46,507 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:46,507 INFO L514 BasicCegarLoop]: trace histogram [23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:46,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-31 22:52:46,507 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:46,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:46,508 INFO L85 PathProgramCache]: Analyzing trace with hash -92975117, now seen corresponding path program 22 times [2022-01-31 22:52:46,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:46,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379029434] [2022-01-31 22:52:46,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:46,509 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:52:46,509 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:52:46,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:46,510 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:46,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:46,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:46,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:52:46,813 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:46,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379029434] [2022-01-31 22:52:46,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1379029434] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:46,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:46,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-31 22:52:46,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171608679] [2022-01-31 22:52:46,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:46,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-31 22:52:46,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:46,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-31 22:52:46,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2022-01-31 22:52:46,815 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand has 27 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 26 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:47,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:47,224 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2022-01-31 22:52:47,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-31 22:52:47,224 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 26 states have internal predecessors, (32), 1 states have call successors, (2), 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 35 [2022-01-31 22:52:47,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:47,225 INFO L225 Difference]: With dead ends: 45 [2022-01-31 22:52:47,225 INFO L226 Difference]: Without dead ends: 38 [2022-01-31 22:52:47,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2022-01-31 22:52:47,226 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:47,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 41 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:52:47,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-01-31 22:52:47,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-01-31 22:52:47,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 34 states have internal predecessors, (36), 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 22:52:47,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2022-01-31 22:52:47,230 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 35 [2022-01-31 22:52:47,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:47,230 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2022-01-31 22:52:47,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 26 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:47,230 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2022-01-31 22:52:47,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-31 22:52:47,231 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:47,231 INFO L514 BasicCegarLoop]: trace histogram [24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:47,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-31 22:52:47,231 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:47,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:47,231 INFO L85 PathProgramCache]: Analyzing trace with hash -904110290, now seen corresponding path program 23 times [2022-01-31 22:52:47,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:47,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223901773] [2022-01-31 22:52:47,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:47,233 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:52:47,233 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:52:47,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:47,234 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:47,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:47,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:47,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:52:47,543 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:47,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223901773] [2022-01-31 22:52:47,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1223901773] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:47,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:47,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-31 22:52:47,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247009455] [2022-01-31 22:52:47,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:47,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-31 22:52:47,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:47,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-31 22:52:47,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2022-01-31 22:52:47,544 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand has 28 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 27 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 22:52:47,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:47,981 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2022-01-31 22:52:47,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-31 22:52:47,982 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 27 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 22:52:47,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:47,982 INFO L225 Difference]: With dead ends: 46 [2022-01-31 22:52:47,982 INFO L226 Difference]: Without dead ends: 39 [2022-01-31 22:52:47,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2022-01-31 22:52:47,984 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:47,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 36 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:52:47,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-01-31 22:52:47,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-01-31 22:52:47,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 35 states have internal predecessors, (37), 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 22:52:47,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2022-01-31 22:52:47,987 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 36 [2022-01-31 22:52:47,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:47,988 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2022-01-31 22:52:47,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 27 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 22:52:47,988 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2022-01-31 22:52:47,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-31 22:52:47,988 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:47,988 INFO L514 BasicCegarLoop]: trace histogram [25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:47,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-31 22:52:47,988 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:47,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:47,989 INFO L85 PathProgramCache]: Analyzing trace with hash -279496877, now seen corresponding path program 24 times [2022-01-31 22:52:47,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:47,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328202371] [2022-01-31 22:52:47,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:47,990 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:52:47,990 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:52:47,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:47,991 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:48,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:48,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:48,317 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 22:52:48,318 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:48,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328202371] [2022-01-31 22:52:48,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [328202371] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:48,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:48,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-01-31 22:52:48,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292515003] [2022-01-31 22:52:48,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:48,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-31 22:52:48,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:48,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-31 22:52:48,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2022-01-31 22:52:48,320 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 29 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 28 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:48,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:48,775 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2022-01-31 22:52:48,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-31 22:52:48,776 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 28 states have internal predecessors, (34), 1 states have call successors, (2), 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 37 [2022-01-31 22:52:48,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:48,776 INFO L225 Difference]: With dead ends: 47 [2022-01-31 22:52:48,776 INFO L226 Difference]: Without dead ends: 40 [2022-01-31 22:52:48,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2022-01-31 22:52:48,778 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:48,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 31 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:52:48,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-01-31 22:52:48,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-01-31 22:52:48,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 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 22:52:48,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2022-01-31 22:52:48,782 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 37 [2022-01-31 22:52:48,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:48,782 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2022-01-31 22:52:48,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 28 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:48,783 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2022-01-31 22:52:48,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-31 22:52:48,783 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:48,783 INFO L514 BasicCegarLoop]: trace histogram [26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:48,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-31 22:52:48,783 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:48,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:48,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1903649742, now seen corresponding path program 25 times [2022-01-31 22:52:48,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:48,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824546306] [2022-01-31 22:52:48,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:48,785 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:52:48,785 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:52:48,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:48,786 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:49,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:49,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:49,132 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 22:52:49,132 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:49,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824546306] [2022-01-31 22:52:49,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [824546306] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:49,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:49,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-01-31 22:52:49,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109805601] [2022-01-31 22:52:49,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:49,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-31 22:52:49,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:49,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-31 22:52:49,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2022-01-31 22:52:49,134 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 30 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 29 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:49,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:49,570 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2022-01-31 22:52:49,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-31 22:52:49,570 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 29 states have internal predecessors, (35), 1 states have call successors, (2), 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 38 [2022-01-31 22:52:49,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:49,570 INFO L225 Difference]: With dead ends: 48 [2022-01-31 22:52:49,571 INFO L226 Difference]: Without dead ends: 41 [2022-01-31 22:52:49,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2022-01-31 22:52:49,572 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:49,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 41 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:52:49,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-01-31 22:52:49,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-01-31 22:52:49,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 37 states have (on average 1.054054054054054) internal successors, (39), 37 states have internal predecessors, (39), 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 22:52:49,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2022-01-31 22:52:49,576 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 38 [2022-01-31 22:52:49,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:49,576 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2022-01-31 22:52:49,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 29 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:49,576 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2022-01-31 22:52:49,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-31 22:52:49,576 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:49,577 INFO L514 BasicCegarLoop]: trace histogram [27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:49,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-31 22:52:49,577 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:49,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:49,577 INFO L85 PathProgramCache]: Analyzing trace with hash 861718195, now seen corresponding path program 26 times [2022-01-31 22:52:49,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:49,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767010137] [2022-01-31 22:52:49,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:49,579 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:52:49,579 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:52:49,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:49,579 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:49,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:49,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:49,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:52:49,966 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:49,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767010137] [2022-01-31 22:52:49,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [767010137] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:49,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:49,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-01-31 22:52:49,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109204] [2022-01-31 22:52:49,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:49,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-31 22:52:49,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:49,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-31 22:52:49,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2022-01-31 22:52:49,968 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 31 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 30 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:50,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:50,433 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2022-01-31 22:52:50,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-31 22:52:50,433 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 30 states have internal predecessors, (36), 1 states have call successors, (2), 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 39 [2022-01-31 22:52:50,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:50,433 INFO L225 Difference]: With dead ends: 49 [2022-01-31 22:52:50,433 INFO L226 Difference]: Without dead ends: 42 [2022-01-31 22:52:50,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2022-01-31 22:52:50,435 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:50,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 51 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:52:50,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-01-31 22:52:50,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-01-31 22:52:50,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 38 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 22:52:50,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2022-01-31 22:52:50,438 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 39 [2022-01-31 22:52:50,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:50,438 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2022-01-31 22:52:50,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 30 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:50,439 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2022-01-31 22:52:50,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-31 22:52:50,439 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:50,439 INFO L514 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:50,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-31 22:52:50,439 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:50,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:50,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1373388690, now seen corresponding path program 27 times [2022-01-31 22:52:50,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:50,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535792528] [2022-01-31 22:52:50,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:50,441 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:52:50,441 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:52:50,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:50,442 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:50,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:50,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:52:50,798 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:50,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535792528] [2022-01-31 22:52:50,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1535792528] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:50,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:50,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-31 22:52:50,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116970085] [2022-01-31 22:52:50,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:50,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-31 22:52:50,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:50,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-31 22:52:50,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2022-01-31 22:52:50,800 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 32 states, 32 states have (on average 1.15625) internal successors, (37), 31 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 22:52:51,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:51,304 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2022-01-31 22:52:51,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-31 22:52:51,304 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.15625) internal successors, (37), 31 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 22:52:51,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:51,305 INFO L225 Difference]: With dead ends: 50 [2022-01-31 22:52:51,305 INFO L226 Difference]: Without dead ends: 43 [2022-01-31 22:52:51,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660 [2022-01-31 22:52:51,307 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:51,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 36 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:52:51,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-01-31 22:52:51,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-01-31 22:52:51,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 39 states have internal predecessors, (41), 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 22:52:51,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2022-01-31 22:52:51,310 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 40 [2022-01-31 22:52:51,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:51,311 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2022-01-31 22:52:51,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.15625) internal successors, (37), 31 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 22:52:51,311 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2022-01-31 22:52:51,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-31 22:52:51,311 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:51,311 INFO L514 BasicCegarLoop]: trace histogram [29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:51,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-31 22:52:51,311 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:51,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:51,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1942225389, now seen corresponding path program 28 times [2022-01-31 22:52:51,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:51,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633142324] [2022-01-31 22:52:51,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:51,313 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:52:51,313 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:52:51,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:51,314 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:51,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:51,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:51,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:52:51,681 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:51,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633142324] [2022-01-31 22:52:51,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [633142324] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:51,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:51,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-31 22:52:51,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619283091] [2022-01-31 22:52:51,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:51,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-31 22:52:51,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:51,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-31 22:52:51,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2022-01-31 22:52:51,683 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand has 33 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 32 states have internal predecessors, (38), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:52,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:52,210 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2022-01-31 22:52:52,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-31 22:52:52,211 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 32 states have internal predecessors, (38), 1 states have call successors, (2), 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 41 [2022-01-31 22:52:52,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:52,211 INFO L225 Difference]: With dead ends: 51 [2022-01-31 22:52:52,211 INFO L226 Difference]: Without dead ends: 44 [2022-01-31 22:52:52,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2022-01-31 22:52:52,212 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:52,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 31 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:52:52,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-01-31 22:52:52,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-01-31 22:52:52,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 40 states have (on average 1.05) internal successors, (42), 40 states have internal predecessors, (42), 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 22:52:52,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2022-01-31 22:52:52,215 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 41 [2022-01-31 22:52:52,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:52,216 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2022-01-31 22:52:52,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 32 states have internal predecessors, (38), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:52,216 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2022-01-31 22:52:52,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-31 22:52:52,216 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:52,216 INFO L514 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:52,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-31 22:52:52,216 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:52,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:52,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1898673422, now seen corresponding path program 29 times [2022-01-31 22:52:52,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:52,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311733583] [2022-01-31 22:52:52,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:52,218 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:52:52,218 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:52:52,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:52,219 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:52,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:52,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:52,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:52:52,613 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:52,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311733583] [2022-01-31 22:52:52,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1311733583] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:52,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:52,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-01-31 22:52:52,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849604623] [2022-01-31 22:52:52,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:52,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-31 22:52:52,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:52,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-31 22:52:52,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2022-01-31 22:52:52,614 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand has 34 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 33 states have internal predecessors, (39), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:53,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:53,150 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2022-01-31 22:52:53,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-31 22:52:53,151 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 33 states have internal predecessors, (39), 1 states have call successors, (2), 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 42 [2022-01-31 22:52:53,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:53,151 INFO L225 Difference]: With dead ends: 52 [2022-01-31 22:52:53,151 INFO L226 Difference]: Without dead ends: 45 [2022-01-31 22:52:53,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160 [2022-01-31 22:52:53,153 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:53,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 41 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:52:53,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-01-31 22:52:53,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-01-31 22:52:53,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 41 states have (on average 1.048780487804878) internal successors, (43), 41 states have internal predecessors, (43), 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 22:52:53,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2022-01-31 22:52:53,156 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 42 [2022-01-31 22:52:53,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:53,156 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2022-01-31 22:52:53,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 33 states have internal predecessors, (39), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:53,156 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2022-01-31 22:52:53,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-31 22:52:53,156 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:53,156 INFO L514 BasicCegarLoop]: trace histogram [31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:53,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-31 22:52:53,157 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:53,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:53,157 INFO L85 PathProgramCache]: Analyzing trace with hash 707452275, now seen corresponding path program 30 times [2022-01-31 22:52:53,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:53,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835944554] [2022-01-31 22:52:53,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:53,158 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:52:53,158 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:52:53,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:53,159 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:53,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:53,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:53,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:52:53,592 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:53,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835944554] [2022-01-31 22:52:53,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [835944554] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:53,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:53,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-01-31 22:52:53,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823254202] [2022-01-31 22:52:53,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:53,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-31 22:52:53,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:53,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-31 22:52:53,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 22:52:53,594 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 35 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 34 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:54,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:54,153 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2022-01-31 22:52:54,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-31 22:52:54,153 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 34 states have internal predecessors, (40), 1 states have call successors, (2), 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 43 [2022-01-31 22:52:54,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:54,154 INFO L225 Difference]: With dead ends: 53 [2022-01-31 22:52:54,154 INFO L226 Difference]: Without dead ends: 46 [2022-01-31 22:52:54,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422 [2022-01-31 22:52:54,155 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:54,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 36 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:52:54,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-01-31 22:52:54,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-01-31 22:52:54,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 42 states have internal predecessors, (44), 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 22:52:54,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2022-01-31 22:52:54,158 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 43 [2022-01-31 22:52:54,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:54,159 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2022-01-31 22:52:54,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 34 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:54,159 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2022-01-31 22:52:54,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-31 22:52:54,159 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:54,159 INFO L514 BasicCegarLoop]: trace histogram [32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:54,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-31 22:52:54,159 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:54,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:54,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1860664914, now seen corresponding path program 31 times [2022-01-31 22:52:54,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:54,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [418276923] [2022-01-31 22:52:54,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:54,161 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:52:54,161 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:52:54,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:54,162 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:54,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:54,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:54,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:52:54,593 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:54,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [418276923] [2022-01-31 22:52:54,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [418276923] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:54,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:54,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-31 22:52:54,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400743437] [2022-01-31 22:52:54,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:54,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-31 22:52:54,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:54,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-31 22:52:54,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2022-01-31 22:52:54,595 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand has 36 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 35 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 22:52:55,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:55,275 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2022-01-31 22:52:55,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-31 22:52:55,276 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 35 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 22:52:55,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:55,276 INFO L225 Difference]: With dead ends: 54 [2022-01-31 22:52:55,276 INFO L226 Difference]: Without dead ends: 47 [2022-01-31 22:52:55,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1785, Invalid=2907, Unknown=0, NotChecked=0, Total=4692 [2022-01-31 22:52:55,278 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:55,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 26 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:52:55,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-01-31 22:52:55,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-01-31 22:52:55,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 43 states have internal predecessors, (45), 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 22:52:55,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2022-01-31 22:52:55,281 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 44 [2022-01-31 22:52:55,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:55,281 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2022-01-31 22:52:55,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 35 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 22:52:55,281 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2022-01-31 22:52:55,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-31 22:52:55,282 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:55,282 INFO L514 BasicCegarLoop]: trace histogram [33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:55,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-31 22:52:55,282 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:55,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:55,282 INFO L85 PathProgramCache]: Analyzing trace with hash 132080851, now seen corresponding path program 32 times [2022-01-31 22:52:55,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:55,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905005054] [2022-01-31 22:52:55,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:55,283 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:52:55,284 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:52:55,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:55,284 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:55,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:55,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:55,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:52:55,764 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:55,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905005054] [2022-01-31 22:52:55,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1905005054] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:55,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:55,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-31 22:52:55,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848550935] [2022-01-31 22:52:55,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:55,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-31 22:52:55,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:55,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-31 22:52:55,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 22:52:55,766 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 37 states, 37 states have (on average 1.135135135135135) internal successors, (42), 36 states have internal predecessors, (42), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:56,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:56,371 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2022-01-31 22:52:56,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-31 22:52:56,371 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.135135135135135) internal successors, (42), 36 states have internal predecessors, (42), 1 states have call successors, (2), 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 45 [2022-01-31 22:52:56,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:56,372 INFO L225 Difference]: With dead ends: 55 [2022-01-31 22:52:56,372 INFO L226 Difference]: Without dead ends: 48 [2022-01-31 22:52:56,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1890, Invalid=3080, Unknown=0, NotChecked=0, Total=4970 [2022-01-31 22:52:56,373 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:56,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 36 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:52:56,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-01-31 22:52:56,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2022-01-31 22:52:56,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 44 states have (on average 1.0454545454545454) internal successors, (46), 44 states have internal predecessors, (46), 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 22:52:56,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2022-01-31 22:52:56,376 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 45 [2022-01-31 22:52:56,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:56,376 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2022-01-31 22:52:56,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.135135135135135) internal successors, (42), 36 states have internal predecessors, (42), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:56,376 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2022-01-31 22:52:56,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-31 22:52:56,377 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:56,377 INFO L514 BasicCegarLoop]: trace histogram [34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:56,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-31 22:52:56,377 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:56,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:56,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1777657422, now seen corresponding path program 33 times [2022-01-31 22:52:56,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:56,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867373276] [2022-01-31 22:52:56,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:56,379 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:52:56,379 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:52:56,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:56,379 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:56,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:56,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:56,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:52:56,841 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:56,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867373276] [2022-01-31 22:52:56,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1867373276] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:56,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:56,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-01-31 22:52:56,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152705059] [2022-01-31 22:52:56,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:56,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-31 22:52:56,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:56,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-31 22:52:56,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 22:52:56,843 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 38 states, 38 states have (on average 1.131578947368421) internal successors, (43), 37 states have internal predecessors, (43), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:57,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:57,529 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2022-01-31 22:52:57,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-31 22:52:57,530 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.131578947368421) internal successors, (43), 37 states have internal predecessors, (43), 1 states have call successors, (2), 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 46 [2022-01-31 22:52:57,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:57,530 INFO L225 Difference]: With dead ends: 56 [2022-01-31 22:52:57,530 INFO L226 Difference]: Without dead ends: 49 [2022-01-31 22:52:57,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1998, Invalid=3258, Unknown=0, NotChecked=0, Total=5256 [2022-01-31 22:52:57,531 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:57,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 51 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:52:57,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-01-31 22:52:57,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-01-31 22:52:57,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 45 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 22:52:57,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2022-01-31 22:52:57,534 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 46 [2022-01-31 22:52:57,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:57,534 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2022-01-31 22:52:57,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.131578947368421) internal successors, (43), 37 states have internal predecessors, (43), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:57,535 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2022-01-31 22:52:57,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-31 22:52:57,535 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:57,535 INFO L514 BasicCegarLoop]: trace histogram [35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:57,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-31 22:52:57,535 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:57,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:57,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1250923571, now seen corresponding path program 34 times [2022-01-31 22:52:57,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:57,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801963614] [2022-01-31 22:52:57,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:57,537 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:52:57,537 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:52:57,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:57,538 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:57,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:58,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:58,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:52:58,040 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:58,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801963614] [2022-01-31 22:52:58,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1801963614] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:58,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:58,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-01-31 22:52:58,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637781150] [2022-01-31 22:52:58,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:58,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-31 22:52:58,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:58,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-31 22:52:58,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 22:52:58,042 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand has 39 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 38 states have internal predecessors, (44), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:58,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:58,722 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2022-01-31 22:52:58,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-31 22:52:58,723 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 38 states have internal predecessors, (44), 1 states have call successors, (2), 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 47 [2022-01-31 22:52:58,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:58,723 INFO L225 Difference]: With dead ends: 57 [2022-01-31 22:52:58,723 INFO L226 Difference]: Without dead ends: 50 [2022-01-31 22:52:58,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550 [2022-01-31 22:52:58,725 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:58,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 41 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:52:58,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-01-31 22:52:58,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-01-31 22:52:58,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 46 states have internal predecessors, (48), 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 22:52:58,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2022-01-31 22:52:58,728 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 47 [2022-01-31 22:52:58,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:58,728 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2022-01-31 22:52:58,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 38 states have internal predecessors, (44), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:58,729 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2022-01-31 22:52:58,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-31 22:52:58,729 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:58,729 INFO L514 BasicCegarLoop]: trace histogram [36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:58,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-31 22:52:58,729 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:58,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:58,730 INFO L85 PathProgramCache]: Analyzing trace with hash 2102043374, now seen corresponding path program 35 times [2022-01-31 22:52:58,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:58,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874991880] [2022-01-31 22:52:58,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:58,731 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:52:58,731 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:52:58,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:58,732 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:58,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:59,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:59,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:52:59,252 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:59,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874991880] [2022-01-31 22:52:59,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [874991880] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:59,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:59,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-01-31 22:52:59,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399131250] [2022-01-31 22:52:59,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:59,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-31 22:52:59,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:59,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-31 22:52:59,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2022-01-31 22:52:59,253 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand has 40 states, 40 states have (on average 1.125) internal successors, (45), 39 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 22:52:59,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:59,959 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2022-01-31 22:52:59,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-31 22:52:59,959 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.125) internal successors, (45), 39 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 22:52:59,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:59,960 INFO L225 Difference]: With dead ends: 58 [2022-01-31 22:52:59,960 INFO L226 Difference]: Without dead ends: 51 [2022-01-31 22:52:59,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2223, Invalid=3629, Unknown=0, NotChecked=0, Total=5852 [2022-01-31 22:52:59,961 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:59,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 36 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:52:59,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-01-31 22:52:59,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-01-31 22:52:59,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 47 states have internal predecessors, (49), 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 22:52:59,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2022-01-31 22:52:59,964 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 48 [2022-01-31 22:52:59,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:59,964 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2022-01-31 22:52:59,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.125) internal successors, (45), 39 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 22:52:59,965 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2022-01-31 22:52:59,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-31 22:52:59,965 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:59,965 INFO L514 BasicCegarLoop]: trace histogram [37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:59,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-31 22:52:59,965 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:59,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:59,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1578013805, now seen corresponding path program 36 times [2022-01-31 22:52:59,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:59,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85511720] [2022-01-31 22:52:59,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:59,967 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:52:59,967 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:52:59,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:59,968 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:59,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:00,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:53:00,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:00,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:53:00,517 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:53:00,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85511720] [2022-01-31 22:53:00,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [85511720] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:53:00,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:53:00,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2022-01-31 22:53:00,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509981117] [2022-01-31 22:53:00,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:53:00,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-31 22:53:00,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:53:00,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-31 22:53:00,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2022-01-31 22:53:00,519 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 41 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 40 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:01,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:53:01,261 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2022-01-31 22:53:01,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-31 22:53:01,261 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 40 states have internal predecessors, (46), 1 states have call successors, (2), 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 49 [2022-01-31 22:53:01,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:53:01,262 INFO L225 Difference]: With dead ends: 59 [2022-01-31 22:53:01,262 INFO L226 Difference]: Without dead ends: 52 [2022-01-31 22:53:01,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2340, Invalid=3822, Unknown=0, NotChecked=0, Total=6162 [2022-01-31 22:53:01,263 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:53:01,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 31 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:53:01,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-01-31 22:53:01,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-01-31 22:53:01,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 48 states have internal predecessors, (50), 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 22:53:01,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2022-01-31 22:53:01,267 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 49 [2022-01-31 22:53:01,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:53:01,267 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2022-01-31 22:53:01,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 40 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:01,267 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2022-01-31 22:53:01,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-31 22:53:01,267 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:53:01,268 INFO L514 BasicCegarLoop]: trace histogram [38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:53:01,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-31 22:53:01,268 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:53:01,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:53:01,268 INFO L85 PathProgramCache]: Analyzing trace with hash 304330638, now seen corresponding path program 37 times [2022-01-31 22:53:01,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:53:01,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520985862] [2022-01-31 22:53:01,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:53:01,269 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:53:01,269 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:53:01,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:53:01,270 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:53:01,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:01,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:53:01,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:01,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:53:01,926 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:53:01,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520985862] [2022-01-31 22:53:01,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1520985862] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:53:01,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:53:01,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-01-31 22:53:01,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408994587] [2022-01-31 22:53:01,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:53:01,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-31 22:53:01,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:53:01,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-31 22:53:01,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2022-01-31 22:53:01,928 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand has 42 states, 42 states have (on average 1.119047619047619) internal successors, (47), 41 states have internal predecessors, (47), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:02,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:53:02,788 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2022-01-31 22:53:02,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-31 22:53:02,790 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.119047619047619) internal successors, (47), 41 states have internal predecessors, (47), 1 states have call successors, (2), 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 50 [2022-01-31 22:53:02,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:53:02,791 INFO L225 Difference]: With dead ends: 60 [2022-01-31 22:53:02,791 INFO L226 Difference]: Without dead ends: 53 [2022-01-31 22:53:02,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2460, Invalid=4020, Unknown=0, NotChecked=0, Total=6480 [2022-01-31 22:53:02,792 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:53:02,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 46 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:53:02,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-01-31 22:53:02,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-01-31 22:53:02,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 49 states have internal predecessors, (51), 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 22:53:02,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2022-01-31 22:53:02,796 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 50 [2022-01-31 22:53:02,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:53:02,796 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2022-01-31 22:53:02,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.119047619047619) internal successors, (47), 41 states have internal predecessors, (47), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:02,796 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2022-01-31 22:53:02,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-31 22:53:02,796 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:53:02,797 INFO L514 BasicCegarLoop]: trace histogram [39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:53:02,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-31 22:53:02,797 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:53:02,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:53:02,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1472533773, now seen corresponding path program 38 times [2022-01-31 22:53:02,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:53:02,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350189286] [2022-01-31 22:53:02,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:53:02,798 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:53:02,798 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:53:02,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:53:02,799 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:53:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:03,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:53:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:03,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:53:03,456 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:53:03,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350189286] [2022-01-31 22:53:03,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [350189286] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:53:03,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:53:03,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-01-31 22:53:03,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53313606] [2022-01-31 22:53:03,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:53:03,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-31 22:53:03,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:53:03,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-31 22:53:03,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2022-01-31 22:53:03,458 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand has 43 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 42 states have internal predecessors, (48), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:04,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:53:04,260 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2022-01-31 22:53:04,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-31 22:53:04,261 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 42 states have internal predecessors, (48), 1 states have call successors, (2), 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 51 [2022-01-31 22:53:04,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:53:04,261 INFO L225 Difference]: With dead ends: 61 [2022-01-31 22:53:04,261 INFO L226 Difference]: Without dead ends: 54 [2022-01-31 22:53:04,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 819 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2583, Invalid=4223, Unknown=0, NotChecked=0, Total=6806 [2022-01-31 22:53:04,262 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:53:04,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 31 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:53:04,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-01-31 22:53:04,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-01-31 22:53:04,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 50 states have (on average 1.04) internal successors, (52), 50 states have internal predecessors, (52), 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 22:53:04,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2022-01-31 22:53:04,266 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 51 [2022-01-31 22:53:04,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:53:04,266 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2022-01-31 22:53:04,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 42 states have internal predecessors, (48), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:04,266 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2022-01-31 22:53:04,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-31 22:53:04,266 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:53:04,266 INFO L514 BasicCegarLoop]: trace histogram [40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:53:04,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-31 22:53:04,267 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:53:04,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:53:04,267 INFO L85 PathProgramCache]: Analyzing trace with hash -720755666, now seen corresponding path program 39 times [2022-01-31 22:53:04,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:53:04,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776920979] [2022-01-31 22:53:04,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:53:04,268 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:53:04,268 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:53:04,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:53:04,269 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:53:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:04,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:53:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:04,950 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 22:53:04,950 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:53:04,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776920979] [2022-01-31 22:53:04,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1776920979] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:53:04,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:53:04,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-01-31 22:53:04,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162029781] [2022-01-31 22:53:04,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:53:04,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-31 22:53:04,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:53:04,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-31 22:53:04,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2022-01-31 22:53:04,952 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand has 44 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 43 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 22:53:05,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:53:05,764 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2022-01-31 22:53:05,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-31 22:53:05,764 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 43 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 22:53:05,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:53:05,765 INFO L225 Difference]: With dead ends: 62 [2022-01-31 22:53:05,765 INFO L226 Difference]: Without dead ends: 55 [2022-01-31 22:53:05,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 860 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2709, Invalid=4431, Unknown=0, NotChecked=0, Total=7140 [2022-01-31 22:53:05,766 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:53:05,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 41 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:53:05,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-01-31 22:53:05,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-01-31 22:53:05,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 51 states have internal predecessors, (53), 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 22:53:05,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2022-01-31 22:53:05,770 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 52 [2022-01-31 22:53:05,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:53:05,770 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2022-01-31 22:53:05,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 43 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 22:53:05,770 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2022-01-31 22:53:05,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-31 22:53:05,770 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:53:05,771 INFO L514 BasicCegarLoop]: trace histogram [41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:53:05,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-31 22:53:05,771 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:53:05,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:53:05,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1109529171, now seen corresponding path program 40 times [2022-01-31 22:53:05,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:53:05,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831667506] [2022-01-31 22:53:05,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:53:05,772 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:53:05,772 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:53:05,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:53:05,773 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:53:05,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:06,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:53:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:06,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:53:06,424 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:53:06,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831667506] [2022-01-31 22:53:06,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [831667506] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:53:06,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:53:06,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-01-31 22:53:06,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786549946] [2022-01-31 22:53:06,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:53:06,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-31 22:53:06,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:53:06,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-31 22:53:06,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 22:53:06,426 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand has 45 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 44 states have internal predecessors, (50), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:07,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:53:07,300 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2022-01-31 22:53:07,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-31 22:53:07,300 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 44 states have internal predecessors, (50), 1 states have call successors, (2), 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 53 [2022-01-31 22:53:07,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:53:07,301 INFO L225 Difference]: With dead ends: 63 [2022-01-31 22:53:07,301 INFO L226 Difference]: Without dead ends: 56 [2022-01-31 22:53:07,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 902 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2838, Invalid=4644, Unknown=0, NotChecked=0, Total=7482 [2022-01-31 22:53:07,302 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:53:07,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 56 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:53:07,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-01-31 22:53:07,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-01-31 22:53:07,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 52 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 22:53:07,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2022-01-31 22:53:07,306 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 53 [2022-01-31 22:53:07,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:53:07,306 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2022-01-31 22:53:07,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 44 states have internal predecessors, (50), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:07,306 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2022-01-31 22:53:07,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-31 22:53:07,306 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:53:07,307 INFO L514 BasicCegarLoop]: trace histogram [42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:53:07,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-31 22:53:07,307 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:53:07,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:53:07,307 INFO L85 PathProgramCache]: Analyzing trace with hash 2013784270, now seen corresponding path program 41 times [2022-01-31 22:53:07,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:53:07,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562777887] [2022-01-31 22:53:07,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:53:07,308 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:53:07,308 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:53:07,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:53:07,309 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:53:07,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:07,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:53:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:07,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:53:07,966 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:53:07,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562777887] [2022-01-31 22:53:07,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1562777887] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:53:07,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:53:07,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-01-31 22:53:07,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470638558] [2022-01-31 22:53:07,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:53:07,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-31 22:53:07,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:53:07,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-31 22:53:07,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 22:53:07,967 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 46 states, 46 states have (on average 1.108695652173913) internal successors, (51), 45 states have internal predecessors, (51), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:08,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:53:08,928 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2022-01-31 22:53:08,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-31 22:53:08,928 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.108695652173913) internal successors, (51), 45 states have internal predecessors, (51), 1 states have call successors, (2), 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 54 [2022-01-31 22:53:08,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:53:08,929 INFO L225 Difference]: With dead ends: 64 [2022-01-31 22:53:08,929 INFO L226 Difference]: Without dead ends: 57 [2022-01-31 22:53:08,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2970, Invalid=4862, Unknown=0, NotChecked=0, Total=7832 [2022-01-31 22:53:08,931 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:53:08,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 46 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:53:08,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-01-31 22:53:08,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-01-31 22:53:08,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 53 states have internal predecessors, (55), 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 22:53:08,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2022-01-31 22:53:08,934 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 54 [2022-01-31 22:53:08,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:53:08,934 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2022-01-31 22:53:08,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.108695652173913) internal successors, (51), 45 states have internal predecessors, (51), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:08,934 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2022-01-31 22:53:08,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-31 22:53:08,935 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:53:08,935 INFO L514 BasicCegarLoop]: trace histogram [43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:53:08,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-31 22:53:08,935 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:53:08,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:53:08,935 INFO L85 PathProgramCache]: Analyzing trace with hash -19078733, now seen corresponding path program 42 times [2022-01-31 22:53:08,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:53:08,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381513877] [2022-01-31 22:53:08,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:53:08,937 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:53:08,937 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:53:08,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:53:08,937 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:53:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:09,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:53:09,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:09,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:53:09,747 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:53:09,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [381513877] [2022-01-31 22:53:09,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [381513877] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:53:09,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:53:09,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2022-01-31 22:53:09,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817415419] [2022-01-31 22:53:09,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:53:09,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-31 22:53:09,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:53:09,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-31 22:53:09,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2022-01-31 22:53:09,749 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 47 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 46 states have internal predecessors, (52), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:10,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:53:10,748 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2022-01-31 22:53:10,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-31 22:53:10,748 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 46 states have internal predecessors, (52), 1 states have call successors, (2), 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 55 [2022-01-31 22:53:10,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:53:10,749 INFO L225 Difference]: With dead ends: 65 [2022-01-31 22:53:10,749 INFO L226 Difference]: Without dead ends: 58 [2022-01-31 22:53:10,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 989 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3105, Invalid=5085, Unknown=0, NotChecked=0, Total=8190 [2022-01-31 22:53:10,750 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:53:10,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 41 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:53:10,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-01-31 22:53:10,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-01-31 22:53:10,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 54 states have (on average 1.037037037037037) internal successors, (56), 54 states have internal predecessors, (56), 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 22:53:10,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2022-01-31 22:53:10,753 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 55 [2022-01-31 22:53:10,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:53:10,754 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2022-01-31 22:53:10,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 46 states have internal predecessors, (52), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:10,754 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2022-01-31 22:53:10,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-31 22:53:10,754 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:53:10,754 INFO L514 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:53:10,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-31 22:53:10,755 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:53:10,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:53:10,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1386677614, now seen corresponding path program 43 times [2022-01-31 22:53:10,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:53:10,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561661259] [2022-01-31 22:53:10,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:53:10,756 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:53:10,756 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:53:10,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:53:10,757 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:53:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:11,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:53:11,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:11,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:53:11,617 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:53:11,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561661259] [2022-01-31 22:53:11,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1561661259] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:53:11,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:53:11,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-01-31 22:53:11,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128317965] [2022-01-31 22:53:11,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:53:11,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-01-31 22:53:11,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:53:11,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-01-31 22:53:11,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2022-01-31 22:53:11,619 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand has 48 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 47 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 22:53:12,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:53:12,706 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2022-01-31 22:53:12,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-31 22:53:12,707 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 47 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 22:53:12,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:53:12,707 INFO L225 Difference]: With dead ends: 66 [2022-01-31 22:53:12,707 INFO L226 Difference]: Without dead ends: 59 [2022-01-31 22:53:12,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1034 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3243, Invalid=5313, Unknown=0, NotChecked=0, Total=8556 [2022-01-31 22:53:12,709 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:53:12,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 66 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:53:12,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-01-31 22:53:12,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-01-31 22:53:12,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 55 states have internal predecessors, (57), 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 22:53:12,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2022-01-31 22:53:12,724 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 56 [2022-01-31 22:53:12,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:53:12,724 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2022-01-31 22:53:12,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 47 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 22:53:12,724 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2022-01-31 22:53:12,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-31 22:53:12,725 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:53:12,725 INFO L514 BasicCegarLoop]: trace histogram [45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:53:12,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-31 22:53:12,725 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:53:12,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:53:12,725 INFO L85 PathProgramCache]: Analyzing trace with hash 2015451411, now seen corresponding path program 44 times [2022-01-31 22:53:12,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:53:12,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853843554] [2022-01-31 22:53:12,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:53:12,726 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:53:12,726 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:53:12,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:53:12,727 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:53:12,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:13,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:53:13,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:13,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:53:13,600 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:53:13,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853843554] [2022-01-31 22:53:13,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [853843554] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:53:13,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:53:13,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-01-31 22:53:13,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576754005] [2022-01-31 22:53:13,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:53:13,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-31 22:53:13,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:53:13,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-31 22:53:13,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 22:53:13,602 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand has 49 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 48 states have internal predecessors, (54), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:14,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:53:14,647 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2022-01-31 22:53:14,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-31 22:53:14,647 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 48 states have internal predecessors, (54), 1 states have call successors, (2), 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 57 [2022-01-31 22:53:14,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:53:14,647 INFO L225 Difference]: With dead ends: 67 [2022-01-31 22:53:14,647 INFO L226 Difference]: Without dead ends: 60 [2022-01-31 22:53:14,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1080 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3384, Invalid=5546, Unknown=0, NotChecked=0, Total=8930 [2022-01-31 22:53:14,649 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:53:14,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 36 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:53:14,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-01-31 22:53:14,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-01-31 22:53:14,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 56 states have (on average 1.0357142857142858) internal successors, (58), 56 states have internal predecessors, (58), 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 22:53:14,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2022-01-31 22:53:14,652 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 57 [2022-01-31 22:53:14,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:53:14,652 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2022-01-31 22:53:14,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 48 states have internal predecessors, (54), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:14,652 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2022-01-31 22:53:14,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-31 22:53:14,653 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:53:14,653 INFO L514 BasicCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:53:14,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-31 22:53:14,653 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:53:14,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:53:14,653 INFO L85 PathProgramCache]: Analyzing trace with hash 32602638, now seen corresponding path program 45 times [2022-01-31 22:53:14,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:53:14,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996848024] [2022-01-31 22:53:14,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:53:14,654 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:53:14,654 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:53:14,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:53:14,655 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:53:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:15,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:53:15,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:15,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:53:15,514 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:53:15,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996848024] [2022-01-31 22:53:15,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [996848024] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:53:15,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:53:15,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2022-01-31 22:53:15,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281155258] [2022-01-31 22:53:15,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:53:15,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-31 22:53:15,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:53:15,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-31 22:53:15,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2022-01-31 22:53:15,515 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 50 states, 50 states have (on average 1.1) internal successors, (55), 49 states have internal predecessors, (55), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:16,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:53:16,545 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2022-01-31 22:53:16,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-31 22:53:16,546 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.1) internal successors, (55), 49 states have internal predecessors, (55), 1 states have call successors, (2), 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 58 [2022-01-31 22:53:16,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:53:16,546 INFO L225 Difference]: With dead ends: 68 [2022-01-31 22:53:16,546 INFO L226 Difference]: Without dead ends: 61 [2022-01-31 22:53:16,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3528, Invalid=5784, Unknown=0, NotChecked=0, Total=9312 [2022-01-31 22:53:16,547 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:53:16,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 36 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:53:16,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-01-31 22:53:16,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-01-31 22:53:16,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 57 states have internal predecessors, (59), 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 22:53:16,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2022-01-31 22:53:16,550 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 58 [2022-01-31 22:53:16,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:53:16,550 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2022-01-31 22:53:16,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.1) internal successors, (55), 49 states have internal predecessors, (55), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:16,550 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2022-01-31 22:53:16,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-31 22:53:16,550 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:53:16,550 INFO L514 BasicCegarLoop]: trace histogram [47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:53:16,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-31 22:53:16,551 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:53:16,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:53:16,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1306167181, now seen corresponding path program 46 times [2022-01-31 22:53:16,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:53:16,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1808799282] [2022-01-31 22:53:16,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:53:16,552 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:53:16,552 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:53:16,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:53:16,553 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:53:16,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:17,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:53:17,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:17,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:53:17,439 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:53:17,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1808799282] [2022-01-31 22:53:17,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1808799282] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:53:17,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:53:17,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2022-01-31 22:53:17,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201028310] [2022-01-31 22:53:17,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:53:17,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-31 22:53:17,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:53:17,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-31 22:53:17,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2022-01-31 22:53:17,444 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand has 51 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 50 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:18,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:53:18,541 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2022-01-31 22:53:18,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-31 22:53:18,541 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 50 states have internal predecessors, (56), 1 states have call successors, (2), 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 59 [2022-01-31 22:53:18,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:53:18,541 INFO L225 Difference]: With dead ends: 69 [2022-01-31 22:53:18,541 INFO L226 Difference]: Without dead ends: 62 [2022-01-31 22:53:18,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3675, Invalid=6027, Unknown=0, NotChecked=0, Total=9702 [2022-01-31 22:53:18,543 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:53:18,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 36 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:53:18,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-01-31 22:53:18,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-01-31 22:53:18,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 58 states have internal predecessors, (60), 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 22:53:18,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2022-01-31 22:53:18,546 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 59 [2022-01-31 22:53:18,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:53:18,546 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2022-01-31 22:53:18,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 50 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:18,546 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2022-01-31 22:53:18,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-31 22:53:18,546 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:53:18,546 INFO L514 BasicCegarLoop]: trace histogram [48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:53:18,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-31 22:53:18,546 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:53:18,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:53:18,547 INFO L85 PathProgramCache]: Analyzing trace with hash 141641390, now seen corresponding path program 47 times [2022-01-31 22:53:18,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:53:18,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705895925] [2022-01-31 22:53:18,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:53:18,548 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:53:18,548 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:53:18,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:53:18,549 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:53:18,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:19,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:53:19,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:19,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:53:19,402 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:53:19,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705895925] [2022-01-31 22:53:19,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1705895925] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:53:19,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:53:19,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 22:53:19,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954147412] [2022-01-31 22:53:19,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:53:19,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 22:53:19,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:53:19,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 22:53:19,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 22:53:19,403 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand has 52 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 51 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 22:53:20,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:53:20,472 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2022-01-31 22:53:20,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-31 22:53:20,474 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 51 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 22:53:20,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:53:20,474 INFO L225 Difference]: With dead ends: 70 [2022-01-31 22:53:20,474 INFO L226 Difference]: Without dead ends: 63 [2022-01-31 22:53:20,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3825, Invalid=6275, Unknown=0, NotChecked=0, Total=10100 [2022-01-31 22:53:20,475 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:53:20,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 41 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:53:20,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-01-31 22:53:20,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-01-31 22:53:20,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 59 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 22:53:20,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2022-01-31 22:53:20,479 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 60 [2022-01-31 22:53:20,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:53:20,479 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2022-01-31 22:53:20,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 51 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 22:53:20,479 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2022-01-31 22:53:20,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-31 22:53:20,480 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:53:20,480 INFO L514 BasicCegarLoop]: trace histogram [49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:53:20,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-31 22:53:20,480 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:53:20,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:53:20,480 INFO L85 PathProgramCache]: Analyzing trace with hash 2074034131, now seen corresponding path program 48 times [2022-01-31 22:53:20,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:53:20,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885471105] [2022-01-31 22:53:20,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:53:20,481 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:53:20,481 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:53:20,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:53:20,482 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:53:20,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:21,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:53:21,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:21,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:53:21,345 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:53:21,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885471105] [2022-01-31 22:53:21,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [885471105] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:53:21,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:53:21,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-01-31 22:53:21,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427154866] [2022-01-31 22:53:21,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:53:21,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-01-31 22:53:21,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:53:21,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-01-31 22:53:21,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2022-01-31 22:53:21,347 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 53 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 52 states have internal predecessors, (58), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:22,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:53:22,533 INFO L93 Difference]: Finished difference Result 71 states and 73 transitions. [2022-01-31 22:53:22,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-31 22:53:22,533 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 52 states have internal predecessors, (58), 1 states have call successors, (2), 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 61 [2022-01-31 22:53:22,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:53:22,534 INFO L225 Difference]: With dead ends: 71 [2022-01-31 22:53:22,534 INFO L226 Difference]: Without dead ends: 64 [2022-01-31 22:53:22,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1274 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3978, Invalid=6528, Unknown=0, NotChecked=0, Total=10506 [2022-01-31 22:53:22,535 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:53:22,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 31 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:53:22,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-01-31 22:53:22,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-01-31 22:53:22,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 60 states have internal predecessors, (62), 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 22:53:22,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2022-01-31 22:53:22,539 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 61 [2022-01-31 22:53:22,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:53:22,539 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2022-01-31 22:53:22,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 52 states have internal predecessors, (58), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:22,539 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2022-01-31 22:53:22,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-31 22:53:22,540 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:53:22,540 INFO L514 BasicCegarLoop]: trace histogram [50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:53:22,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-01-31 22:53:22,540 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:53:22,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:53:22,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1848666958, now seen corresponding path program 49 times [2022-01-31 22:53:22,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:53:22,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295138760] [2022-01-31 22:53:22,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:53:22,542 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:53:22,542 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:53:22,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:53:22,542 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:53:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:23,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:53:23,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:23,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:53:23,441 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:53:23,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295138760] [2022-01-31 22:53:23,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1295138760] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:53:23,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:53:23,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-01-31 22:53:23,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905582074] [2022-01-31 22:53:23,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:53:23,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-01-31 22:53:23,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:53:23,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-01-31 22:53:23,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2022-01-31 22:53:23,443 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 54 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 53 states have internal predecessors, (59), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:24,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:53:24,590 INFO L93 Difference]: Finished difference Result 72 states and 74 transitions. [2022-01-31 22:53:24,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-31 22:53:24,591 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 53 states have internal predecessors, (59), 1 states have call successors, (2), 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 62 [2022-01-31 22:53:24,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:53:24,591 INFO L225 Difference]: With dead ends: 72 [2022-01-31 22:53:24,591 INFO L226 Difference]: Without dead ends: 65 [2022-01-31 22:53:24,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1325 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4134, Invalid=6786, Unknown=0, NotChecked=0, Total=10920 [2022-01-31 22:53:24,593 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:53:24,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 21 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:53:24,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-01-31 22:53:24,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-01-31 22:53:24,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 61 states have (on average 1.0327868852459017) internal successors, (63), 61 states have internal predecessors, (63), 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 22:53:24,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2022-01-31 22:53:24,597 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 62 [2022-01-31 22:53:24,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:53:24,597 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2022-01-31 22:53:24,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 53 states have internal predecessors, (59), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:24,597 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2022-01-31 22:53:24,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-31 22:53:24,597 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:53:24,598 INFO L514 BasicCegarLoop]: trace histogram [51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:53:24,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-01-31 22:53:24,598 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:53:24,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:53:24,598 INFO L85 PathProgramCache]: Analyzing trace with hash -842748109, now seen corresponding path program 50 times [2022-01-31 22:53:24,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:53:24,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718773396] [2022-01-31 22:53:24,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:53:24,599 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:53:24,599 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:53:24,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:53:24,600 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:53:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:25,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:53:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:25,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:53:25,606 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:53:25,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718773396] [2022-01-31 22:53:25,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [718773396] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:53:25,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:53:25,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2022-01-31 22:53:25,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761843668] [2022-01-31 22:53:25,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:53:25,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-01-31 22:53:25,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:53:25,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-01-31 22:53:25,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2022-01-31 22:53:25,607 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand has 55 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 54 states have internal predecessors, (60), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:26,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:53:26,815 INFO L93 Difference]: Finished difference Result 73 states and 75 transitions. [2022-01-31 22:53:26,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-31 22:53:26,815 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 54 states have internal predecessors, (60), 1 states have call successors, (2), 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 63 [2022-01-31 22:53:26,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:53:26,815 INFO L225 Difference]: With dead ends: 73 [2022-01-31 22:53:26,815 INFO L226 Difference]: Without dead ends: 66 [2022-01-31 22:53:26,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1377 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=4293, Invalid=7049, Unknown=0, NotChecked=0, Total=11342 [2022-01-31 22:53:26,817 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:53:26,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 31 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:53:26,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-01-31 22:53:26,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2022-01-31 22:53:26,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 62 states have (on average 1.032258064516129) internal successors, (64), 62 states have internal predecessors, (64), 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 22:53:26,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2022-01-31 22:53:26,821 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 63 [2022-01-31 22:53:26,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:53:26,821 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2022-01-31 22:53:26,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 54 states have internal predecessors, (60), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:26,821 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2022-01-31 22:53:26,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-31 22:53:26,822 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:53:26,822 INFO L514 BasicCegarLoop]: trace histogram [52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:53:26,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-31 22:53:26,822 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:53:26,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:53:26,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1622730734, now seen corresponding path program 51 times [2022-01-31 22:53:26,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:53:26,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130542480] [2022-01-31 22:53:26,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:53:26,823 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:53:26,823 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:53:26,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:53:26,824 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:53:26,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:27,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:53:27,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:27,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:53:27,774 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:53:27,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130542480] [2022-01-31 22:53:27,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [130542480] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:53:27,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:53:27,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2022-01-31 22:53:27,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800795944] [2022-01-31 22:53:27,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:53:27,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-01-31 22:53:27,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:53:27,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-01-31 22:53:27,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2022-01-31 22:53:27,778 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand has 56 states, 56 states have (on average 1.0892857142857142) internal successors, (61), 55 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 22:53:29,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:53:29,015 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2022-01-31 22:53:29,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-31 22:53:29,016 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.0892857142857142) internal successors, (61), 55 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 22:53:29,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:53:29,016 INFO L225 Difference]: With dead ends: 74 [2022-01-31 22:53:29,016 INFO L226 Difference]: Without dead ends: 67 [2022-01-31 22:53:29,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1430 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=4455, Invalid=7317, Unknown=0, NotChecked=0, Total=11772 [2022-01-31 22:53:29,018 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:53:29,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 36 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:53:29,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-01-31 22:53:29,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-01-31 22:53:29,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 63 states have internal predecessors, (65), 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 22:53:29,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2022-01-31 22:53:29,021 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 64 [2022-01-31 22:53:29,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:53:29,022 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2022-01-31 22:53:29,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.0892857142857142) internal successors, (61), 55 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 22:53:29,022 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2022-01-31 22:53:29,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-31 22:53:29,022 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:53:29,022 INFO L514 BasicCegarLoop]: trace histogram [53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:53:29,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-01-31 22:53:29,023 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:53:29,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:53:29,023 INFO L85 PathProgramCache]: Analyzing trace with hash 743163539, now seen corresponding path program 52 times [2022-01-31 22:53:29,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:53:29,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384963251] [2022-01-31 22:53:29,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:53:29,024 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:53:29,024 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:53:29,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:53:29,025 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:53:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:30,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:53:30,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:30,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:53:30,060 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:53:30,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384963251] [2022-01-31 22:53:30,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1384963251] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:53:30,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:53:30,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2022-01-31 22:53:30,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065956938] [2022-01-31 22:53:30,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:53:30,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-01-31 22:53:30,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:53:30,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-01-31 22:53:30,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2022-01-31 22:53:30,064 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand has 57 states, 57 states have (on average 1.087719298245614) internal successors, (62), 56 states have internal predecessors, (62), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:31,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:53:31,335 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2022-01-31 22:53:31,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-31 22:53:31,336 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.087719298245614) internal successors, (62), 56 states have internal predecessors, (62), 1 states have call successors, (2), 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 65 [2022-01-31 22:53:31,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:53:31,336 INFO L225 Difference]: With dead ends: 75 [2022-01-31 22:53:31,336 INFO L226 Difference]: Without dead ends: 68 [2022-01-31 22:53:31,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=4620, Invalid=7590, Unknown=0, NotChecked=0, Total=12210 [2022-01-31 22:53:31,337 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:53:31,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 56 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:53:31,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-01-31 22:53:31,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2022-01-31 22:53:31,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 64 states have (on average 1.03125) internal successors, (66), 64 states have internal predecessors, (66), 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 22:53:31,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2022-01-31 22:53:31,341 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 65 [2022-01-31 22:53:31,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:53:31,341 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2022-01-31 22:53:31,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.087719298245614) internal successors, (62), 56 states have internal predecessors, (62), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:31,341 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2022-01-31 22:53:31,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-31 22:53:31,342 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:53:31,342 INFO L514 BasicCegarLoop]: trace histogram [54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:53:31,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-01-31 22:53:31,342 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:53:31,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:53:31,342 INFO L85 PathProgramCache]: Analyzing trace with hash -753615730, now seen corresponding path program 53 times [2022-01-31 22:53:31,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:53:31,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162361336] [2022-01-31 22:53:31,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:53:31,343 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:53:31,343 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:53:31,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:53:31,344 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:53:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:32,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:53:32,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:32,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:53:32,504 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:53:32,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162361336] [2022-01-31 22:53:32,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [162361336] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:53:32,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:53:32,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-01-31 22:53:32,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062806077] [2022-01-31 22:53:32,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:53:32,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-01-31 22:53:32,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:53:32,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-01-31 22:53:32,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2022-01-31 22:53:32,506 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand has 58 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 57 states have internal predecessors, (63), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:33,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:53:33,817 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2022-01-31 22:53:33,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-31 22:53:33,817 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 57 states have internal predecessors, (63), 1 states have call successors, (2), 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 66 [2022-01-31 22:53:33,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:53:33,817 INFO L225 Difference]: With dead ends: 76 [2022-01-31 22:53:33,817 INFO L226 Difference]: Without dead ends: 69 [2022-01-31 22:53:33,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1539 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=4788, Invalid=7868, Unknown=0, NotChecked=0, Total=12656 [2022-01-31 22:53:33,819 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:53:33,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 31 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:53:33,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-01-31 22:53:33,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-01-31 22:53:33,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 65 states have (on average 1.0307692307692307) internal successors, (67), 65 states have internal predecessors, (67), 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 22:53:33,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2022-01-31 22:53:33,823 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 66 [2022-01-31 22:53:33,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:53:33,823 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2022-01-31 22:53:33,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 57 states have internal predecessors, (63), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:33,823 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2022-01-31 22:53:33,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-31 22:53:33,824 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:53:33,824 INFO L514 BasicCegarLoop]: trace histogram [55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:53:33,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-01-31 22:53:33,824 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:53:33,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:53:33,824 INFO L85 PathProgramCache]: Analyzing trace with hash 90867187, now seen corresponding path program 54 times [2022-01-31 22:53:33,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:53:33,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307400461] [2022-01-31 22:53:33,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:53:33,825 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:53:33,826 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:53:33,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:53:33,826 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:53:33,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:35,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:53:35,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:35,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:53:35,008 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:53:35,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307400461] [2022-01-31 22:53:35,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [307400461] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:53:35,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:53:35,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2022-01-31 22:53:35,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158455975] [2022-01-31 22:53:35,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:53:35,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-01-31 22:53:35,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:53:35,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-01-31 22:53:35,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2022-01-31 22:53:35,010 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand has 59 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 58 states have internal predecessors, (64), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:36,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:53:36,363 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2022-01-31 22:53:36,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-31 22:53:36,364 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 58 states have internal predecessors, (64), 1 states have call successors, (2), 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 67 [2022-01-31 22:53:36,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:53:36,364 INFO L225 Difference]: With dead ends: 77 [2022-01-31 22:53:36,364 INFO L226 Difference]: Without dead ends: 70 [2022-01-31 22:53:36,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1595 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=4959, Invalid=8151, Unknown=0, NotChecked=0, Total=13110 [2022-01-31 22:53:36,365 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:53:36,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 26 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:53:36,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-01-31 22:53:36,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-01-31 22:53:36,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 66 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 22:53:36,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2022-01-31 22:53:36,368 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 67 [2022-01-31 22:53:36,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:53:36,368 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2022-01-31 22:53:36,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 58 states have internal predecessors, (64), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:36,368 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2022-01-31 22:53:36,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-31 22:53:36,369 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:53:36,369 INFO L514 BasicCegarLoop]: trace histogram [56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:53:36,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-01-31 22:53:36,369 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:53:36,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:53:36,369 INFO L85 PathProgramCache]: Analyzing trace with hash 500033838, now seen corresponding path program 55 times [2022-01-31 22:53:36,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:53:36,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998593192] [2022-01-31 22:53:36,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:53:36,370 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:53:36,370 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:53:36,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:53:36,371 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:53:36,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:37,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:53:37,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:37,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:53:37,529 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:53:37,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998593192] [2022-01-31 22:53:37,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [998593192] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:53:37,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:53:37,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2022-01-31 22:53:37,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831909534] [2022-01-31 22:53:37,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:53:37,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-01-31 22:53:37,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:53:37,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-01-31 22:53:37,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2022-01-31 22:53:37,531 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand has 60 states, 60 states have (on average 1.0833333333333333) internal successors, (65), 59 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 22:53:38,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:53:38,988 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2022-01-31 22:53:38,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-31 22:53:38,988 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.0833333333333333) internal successors, (65), 59 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 22:53:38,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:53:38,989 INFO L225 Difference]: With dead ends: 78 [2022-01-31 22:53:38,989 INFO L226 Difference]: Without dead ends: 71 [2022-01-31 22:53:38,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1652 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=5133, Invalid=8439, Unknown=0, NotChecked=0, Total=13572 [2022-01-31 22:53:38,990 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:53:38,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 31 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:53:38,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-01-31 22:53:38,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-01-31 22:53:38,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 67 states have internal predecessors, (69), 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 22:53:38,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2022-01-31 22:53:38,994 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 68 [2022-01-31 22:53:38,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:53:38,994 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2022-01-31 22:53:38,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.0833333333333333) internal successors, (65), 59 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 22:53:38,994 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2022-01-31 22:53:38,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-31 22:53:38,994 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:53:38,995 INFO L514 BasicCegarLoop]: trace histogram [57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:53:38,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-01-31 22:53:38,995 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:53:38,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:53:38,995 INFO L85 PathProgramCache]: Analyzing trace with hash 299298131, now seen corresponding path program 56 times [2022-01-31 22:53:38,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:53:38,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977412996] [2022-01-31 22:53:38,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:53:38,996 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:53:38,996 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:53:38,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:53:38,997 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:53:39,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:40,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:53:40,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:40,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:53:40,161 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:53:40,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977412996] [2022-01-31 22:53:40,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1977412996] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:53:40,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:53:40,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2022-01-31 22:53:40,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126648023] [2022-01-31 22:53:40,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:53:40,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-01-31 22:53:40,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:53:40,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-01-31 22:53:40,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2022-01-31 22:53:40,162 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 61 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 60 states have internal predecessors, (66), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:41,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:53:41,628 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2022-01-31 22:53:41,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-31 22:53:41,628 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 60 states have internal predecessors, (66), 1 states have call successors, (2), 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 69 [2022-01-31 22:53:41,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:53:41,629 INFO L225 Difference]: With dead ends: 79 [2022-01-31 22:53:41,629 INFO L226 Difference]: Without dead ends: 72 [2022-01-31 22:53:41,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1710 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=5310, Invalid=8732, Unknown=0, NotChecked=0, Total=14042 [2022-01-31 22:53:41,631 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:53:41,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 56 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:53:41,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-01-31 22:53:41,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2022-01-31 22:53:41,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 68 states have (on average 1.0294117647058822) internal successors, (70), 68 states have internal predecessors, (70), 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 22:53:41,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2022-01-31 22:53:41,640 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 69 [2022-01-31 22:53:41,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:53:41,640 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2022-01-31 22:53:41,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 60 states have internal predecessors, (66), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:41,641 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2022-01-31 22:53:41,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-31 22:53:41,641 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:53:41,641 INFO L514 BasicCegarLoop]: trace histogram [58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:53:41,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-01-31 22:53:41,641 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:53:41,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:53:41,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1628541490, now seen corresponding path program 57 times [2022-01-31 22:53:41,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:53:41,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169288779] [2022-01-31 22:53:41,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:53:41,643 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:53:41,643 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:53:41,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:53:41,645 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:53:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:42,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:53:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:42,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:53:42,805 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:53:42,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169288779] [2022-01-31 22:53:42,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [169288779] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:53:42,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:53:42,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-01-31 22:53:42,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551589815] [2022-01-31 22:53:42,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:53:42,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-01-31 22:53:42,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:53:42,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-01-31 22:53:42,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2022-01-31 22:53:42,807 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 62 states, 62 states have (on average 1.0806451612903225) internal successors, (67), 61 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:44,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:53:44,296 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions. [2022-01-31 22:53:44,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-31 22:53:44,296 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.0806451612903225) internal successors, (67), 61 states have internal predecessors, (67), 1 states have call successors, (2), 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 70 [2022-01-31 22:53:44,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:53:44,296 INFO L225 Difference]: With dead ends: 80 [2022-01-31 22:53:44,296 INFO L226 Difference]: Without dead ends: 73 [2022-01-31 22:53:44,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1769 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=5490, Invalid=9030, Unknown=0, NotChecked=0, Total=14520 [2022-01-31 22:53:44,299 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:53:44,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 56 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:53:44,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-01-31 22:53:44,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-01-31 22:53:44,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 69 states have internal predecessors, (71), 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 22:53:44,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2022-01-31 22:53:44,303 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 70 [2022-01-31 22:53:44,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:53:44,303 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2022-01-31 22:53:44,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.0806451612903225) internal successors, (67), 61 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:44,304 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2022-01-31 22:53:44,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-31 22:53:44,304 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:53:44,305 INFO L514 BasicCegarLoop]: trace histogram [59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:53:44,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-01-31 22:53:44,305 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:53:44,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:53:44,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1262027597, now seen corresponding path program 58 times [2022-01-31 22:53:44,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:53:44,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245829549] [2022-01-31 22:53:44,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:53:44,306 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:53:44,306 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:53:44,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:53:44,307 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:53:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:45,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:53:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:45,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:53:45,620 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:53:45,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245829549] [2022-01-31 22:53:45,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [245829549] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:53:45,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:53:45,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2022-01-31 22:53:45,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108939924] [2022-01-31 22:53:45,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:53:45,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-01-31 22:53:45,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:53:45,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-01-31 22:53:45,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2022-01-31 22:53:45,622 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand has 63 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 62 states have internal predecessors, (68), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:47,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:53:47,132 INFO L93 Difference]: Finished difference Result 81 states and 83 transitions. [2022-01-31 22:53:47,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-31 22:53:47,133 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 62 states have internal predecessors, (68), 1 states have call successors, (2), 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 71 [2022-01-31 22:53:47,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:53:47,133 INFO L225 Difference]: With dead ends: 81 [2022-01-31 22:53:47,133 INFO L226 Difference]: Without dead ends: 74 [2022-01-31 22:53:47,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1829 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=5673, Invalid=9333, Unknown=0, NotChecked=0, Total=15006 [2022-01-31 22:53:47,135 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:53:47,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 31 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:53:47,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-01-31 22:53:47,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-01-31 22:53:47,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 70 states have internal predecessors, (72), 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 22:53:47,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2022-01-31 22:53:47,139 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 71 [2022-01-31 22:53:47,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:53:47,139 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2022-01-31 22:53:47,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 62 states have internal predecessors, (68), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:47,139 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2022-01-31 22:53:47,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-31 22:53:47,139 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:53:47,139 INFO L514 BasicCegarLoop]: trace histogram [60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:53:47,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-01-31 22:53:47,140 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:53:47,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:53:47,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1509968494, now seen corresponding path program 59 times [2022-01-31 22:53:47,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:53:47,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067531024] [2022-01-31 22:53:47,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:53:47,141 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:53:47,141 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:53:47,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:53:47,142 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:53:47,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:48,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:53:48,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:48,398 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 22:53:48,398 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:53:48,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067531024] [2022-01-31 22:53:48,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2067531024] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:53:48,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:53:48,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2022-01-31 22:53:48,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425492250] [2022-01-31 22:53:48,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:53:48,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-31 22:53:48,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:53:48,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-31 22:53:48,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2022-01-31 22:53:48,400 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand has 64 states, 64 states have (on average 1.078125) internal successors, (69), 63 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 22:53:49,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:53:49,944 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2022-01-31 22:53:49,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-31 22:53:49,945 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.078125) internal successors, (69), 63 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 22:53:49,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:53:49,945 INFO L225 Difference]: With dead ends: 82 [2022-01-31 22:53:49,945 INFO L226 Difference]: Without dead ends: 75 [2022-01-31 22:53:49,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1890 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=5859, Invalid=9641, Unknown=0, NotChecked=0, Total=15500 [2022-01-31 22:53:49,946 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:53:49,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 36 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:53:49,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-01-31 22:53:49,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-01-31 22:53:49,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 71 states have (on average 1.028169014084507) internal successors, (73), 71 states have internal predecessors, (73), 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 22:53:49,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2022-01-31 22:53:49,948 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 72 [2022-01-31 22:53:49,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:53:49,949 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2022-01-31 22:53:49,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.078125) internal successors, (69), 63 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 22:53:49,949 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2022-01-31 22:53:49,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-31 22:53:49,949 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:53:49,949 INFO L514 BasicCegarLoop]: trace histogram [61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:53:49,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-01-31 22:53:49,950 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:53:49,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:53:49,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1542501395, now seen corresponding path program 60 times [2022-01-31 22:53:49,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:53:49,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109763942] [2022-01-31 22:53:49,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:53:49,951 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:53:49,951 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:53:49,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:53:49,952 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:53:49,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:51,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:53:51,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:51,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:53:51,215 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:53:51,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109763942] [2022-01-31 22:53:51,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1109763942] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:53:51,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:53:51,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2022-01-31 22:53:51,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337271960] [2022-01-31 22:53:51,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:53:51,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-01-31 22:53:51,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:53:51,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-01-31 22:53:51,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2022-01-31 22:53:51,217 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand has 65 states, 65 states have (on average 1.0769230769230769) internal successors, (70), 64 states have internal predecessors, (70), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:52,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:53:52,799 INFO L93 Difference]: Finished difference Result 83 states and 85 transitions. [2022-01-31 22:53:52,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-31 22:53:52,799 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.0769230769230769) internal successors, (70), 64 states have internal predecessors, (70), 1 states have call successors, (2), 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 73 [2022-01-31 22:53:52,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:53:52,800 INFO L225 Difference]: With dead ends: 83 [2022-01-31 22:53:52,800 INFO L226 Difference]: Without dead ends: 76 [2022-01-31 22:53:52,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1952 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=6048, Invalid=9954, Unknown=0, NotChecked=0, Total=16002 [2022-01-31 22:53:52,801 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:53:52,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 41 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:53:52,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-01-31 22:53:52,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-01-31 22:53:52,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 72 states have internal predecessors, (74), 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 22:53:52,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2022-01-31 22:53:52,805 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 73 [2022-01-31 22:53:52,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:53:52,805 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2022-01-31 22:53:52,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.0769230769230769) internal successors, (70), 64 states have internal predecessors, (70), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:52,806 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2022-01-31 22:53:52,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-31 22:53:52,806 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:53:52,806 INFO L514 BasicCegarLoop]: trace histogram [62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:53:52,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-01-31 22:53:52,806 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:53:52,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:53:52,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1743945970, now seen corresponding path program 61 times [2022-01-31 22:53:52,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:53:52,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604962735] [2022-01-31 22:53:52,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:53:52,808 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:53:52,808 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:53:52,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:53:52,809 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:53:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:54,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:53:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:54,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:53:54,166 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:53:54,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604962735] [2022-01-31 22:53:54,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1604962735] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:53:54,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:53:54,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2022-01-31 22:53:54,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280697515] [2022-01-31 22:53:54,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:53:54,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-01-31 22:53:54,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:53:54,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-01-31 22:53:54,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2022-01-31 22:53:54,168 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand has 66 states, 66 states have (on average 1.0757575757575757) internal successors, (71), 65 states have internal predecessors, (71), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:55,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:53:55,802 INFO L93 Difference]: Finished difference Result 84 states and 86 transitions. [2022-01-31 22:53:55,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-31 22:53:55,802 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.0757575757575757) internal successors, (71), 65 states have internal predecessors, (71), 1 states have call successors, (2), 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 74 [2022-01-31 22:53:55,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:53:55,803 INFO L225 Difference]: With dead ends: 84 [2022-01-31 22:53:55,803 INFO L226 Difference]: Without dead ends: 77 [2022-01-31 22:53:55,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2015 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=6240, Invalid=10272, Unknown=0, NotChecked=0, Total=16512 [2022-01-31 22:53:55,804 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:53:55,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 31 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:53:55,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-01-31 22:53:55,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-01-31 22:53:55,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 73 states have (on average 1.0273972602739727) internal successors, (75), 73 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 22:53:55,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2022-01-31 22:53:55,808 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 74 [2022-01-31 22:53:55,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:53:55,808 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2022-01-31 22:53:55,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.0757575757575757) internal successors, (71), 65 states have internal predecessors, (71), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:55,808 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2022-01-31 22:53:55,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-31 22:53:55,809 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:53:55,809 INFO L514 BasicCegarLoop]: trace histogram [63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:53:55,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-01-31 22:53:55,809 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:53:55,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:53:55,809 INFO L85 PathProgramCache]: Analyzing trace with hash -544599181, now seen corresponding path program 62 times [2022-01-31 22:53:55,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:53:55,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890119326] [2022-01-31 22:53:55,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:53:55,810 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:53:55,810 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:53:55,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:53:55,811 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:53:55,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:57,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:53:57,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:57,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:53:57,151 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:53:57,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890119326] [2022-01-31 22:53:57,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1890119326] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:53:57,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:53:57,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67 [2022-01-31 22:53:57,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414190275] [2022-01-31 22:53:57,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:53:57,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-01-31 22:53:57,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:53:57,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-01-31 22:53:57,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2022-01-31 22:53:57,153 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand has 67 states, 67 states have (on average 1.0746268656716418) internal successors, (72), 66 states have internal predecessors, (72), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:58,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:53:58,825 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2022-01-31 22:53:58,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-31 22:53:58,826 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 1.0746268656716418) internal successors, (72), 66 states have internal predecessors, (72), 1 states have call successors, (2), 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 75 [2022-01-31 22:53:58,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:53:58,826 INFO L225 Difference]: With dead ends: 85 [2022-01-31 22:53:58,826 INFO L226 Difference]: Without dead ends: 78 [2022-01-31 22:53:58,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2079 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=6435, Invalid=10595, Unknown=0, NotChecked=0, Total=17030 [2022-01-31 22:53:58,828 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:53:58,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 31 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:53:58,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-01-31 22:53:58,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-01-31 22:53:58,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 74 states have (on average 1.027027027027027) internal successors, (76), 74 states have internal predecessors, (76), 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 22:53:58,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2022-01-31 22:53:58,832 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 75 [2022-01-31 22:53:58,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:53:58,832 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2022-01-31 22:53:58,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 1.0746268656716418) internal successors, (72), 66 states have internal predecessors, (72), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:58,832 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2022-01-31 22:53:58,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-31 22:53:58,832 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:53:58,832 INFO L514 BasicCegarLoop]: trace histogram [64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:53:58,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-01-31 22:53:58,833 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:53:58,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:53:58,833 INFO L85 PathProgramCache]: Analyzing trace with hash -2019554386, now seen corresponding path program 63 times [2022-01-31 22:53:58,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:53:58,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531364409] [2022-01-31 22:53:58,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:53:58,834 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:53:58,834 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:53:58,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:53:58,835 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:53:58,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:00,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:54:00,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:00,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:54:00,320 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:54:00,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531364409] [2022-01-31 22:54:00,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [531364409] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:54:00,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:54:00,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2022-01-31 22:54:00,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847285379] [2022-01-31 22:54:00,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:54:00,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-01-31 22:54:00,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:54:00,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-01-31 22:54:00,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556 [2022-01-31 22:54:00,322 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand has 68 states, 68 states have (on average 1.0735294117647058) internal successors, (73), 67 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 22:54:02,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:54:02,054 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2022-01-31 22:54:02,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-31 22:54:02,054 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.0735294117647058) internal successors, (73), 67 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 22:54:02,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:54:02,055 INFO L225 Difference]: With dead ends: 86 [2022-01-31 22:54:02,055 INFO L226 Difference]: Without dead ends: 79 [2022-01-31 22:54:02,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2144 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=6633, Invalid=10923, Unknown=0, NotChecked=0, Total=17556 [2022-01-31 22:54:02,056 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:54:02,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 36 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:54:02,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-01-31 22:54:02,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2022-01-31 22:54:02,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 75 states have internal predecessors, (77), 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 22:54:02,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2022-01-31 22:54:02,060 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 76 [2022-01-31 22:54:02,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:54:02,060 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2022-01-31 22:54:02,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.0735294117647058) internal successors, (73), 67 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 22:54:02,060 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2022-01-31 22:54:02,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-31 22:54:02,061 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:54:02,061 INFO L514 BasicCegarLoop]: trace histogram [65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:54:02,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-01-31 22:54:02,061 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:54:02,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:54:02,061 INFO L85 PathProgramCache]: Analyzing trace with hash -498525485, now seen corresponding path program 64 times [2022-01-31 22:54:02,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:54:02,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991716082] [2022-01-31 22:54:02,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:54:02,062 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:54:02,063 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:54:02,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:54:02,063 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:54:02,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:03,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:54:03,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:03,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:54:03,620 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:54:03,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991716082] [2022-01-31 22:54:03,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [991716082] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:54:03,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:54:03,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69 [2022-01-31 22:54:03,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668441708] [2022-01-31 22:54:03,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:54:03,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-01-31 22:54:03,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:54:03,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-01-31 22:54:03,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2022-01-31 22:54:03,622 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand has 69 states, 69 states have (on average 1.0724637681159421) internal successors, (74), 68 states have internal predecessors, (74), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:54:05,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:54:05,437 INFO L93 Difference]: Finished difference Result 87 states and 89 transitions. [2022-01-31 22:54:05,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-31 22:54:05,438 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.0724637681159421) internal successors, (74), 68 states have internal predecessors, (74), 1 states have call successors, (2), 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 77 [2022-01-31 22:54:05,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:54:05,439 INFO L225 Difference]: With dead ends: 87 [2022-01-31 22:54:05,439 INFO L226 Difference]: Without dead ends: 80 [2022-01-31 22:54:05,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2210 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=6834, Invalid=11256, Unknown=0, NotChecked=0, Total=18090 [2022-01-31 22:54:05,441 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:54:05,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 36 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:54:05,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-01-31 22:54:05,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-01-31 22:54:05,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 76 states have internal predecessors, (78), 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 22:54:05,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2022-01-31 22:54:05,444 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 77 [2022-01-31 22:54:05,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:54:05,444 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2022-01-31 22:54:05,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 1.0724637681159421) internal successors, (74), 68 states have internal predecessors, (74), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:54:05,445 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2022-01-31 22:54:05,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-31 22:54:05,445 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:54:05,445 INFO L514 BasicCegarLoop]: trace histogram [66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:54:05,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-01-31 22:54:05,445 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:54:05,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:54:05,446 INFO L85 PathProgramCache]: Analyzing trace with hash -591269810, now seen corresponding path program 65 times [2022-01-31 22:54:05,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:54:05,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123627386] [2022-01-31 22:54:05,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:54:05,447 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:54:05,447 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:54:05,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:54:05,448 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:54:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:06,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:54:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:06,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:54:06,918 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:54:06,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2123627386] [2022-01-31 22:54:06,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2123627386] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:54:06,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:54:06,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2022-01-31 22:54:06,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332695048] [2022-01-31 22:54:06,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:54:06,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-01-31 22:54:06,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:54:06,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-01-31 22:54:06,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2022-01-31 22:54:06,920 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand has 70 states, 70 states have (on average 1.0714285714285714) internal successors, (75), 69 states have internal predecessors, (75), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:54:08,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:54:08,724 INFO L93 Difference]: Finished difference Result 88 states and 90 transitions. [2022-01-31 22:54:08,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-31 22:54:08,725 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.0714285714285714) internal successors, (75), 69 states have internal predecessors, (75), 1 states have call successors, (2), 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 78 [2022-01-31 22:54:08,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:54:08,725 INFO L225 Difference]: With dead ends: 88 [2022-01-31 22:54:08,725 INFO L226 Difference]: Without dead ends: 81 [2022-01-31 22:54:08,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2277 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=7038, Invalid=11594, Unknown=0, NotChecked=0, Total=18632 [2022-01-31 22:54:08,727 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:54:08,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 56 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:54:08,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-01-31 22:54:08,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-01-31 22:54:08,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 77 states have (on average 1.025974025974026) internal successors, (79), 77 states have internal predecessors, (79), 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 22:54:08,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2022-01-31 22:54:08,734 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 78 [2022-01-31 22:54:08,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:54:08,734 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2022-01-31 22:54:08,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 1.0714285714285714) internal successors, (75), 69 states have internal predecessors, (75), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:54:08,734 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2022-01-31 22:54:08,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-31 22:54:08,735 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:54:08,735 INFO L514 BasicCegarLoop]: trace histogram [67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:54:08,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-01-31 22:54:08,735 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:54:08,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:54:08,735 INFO L85 PathProgramCache]: Analyzing trace with hash 828623411, now seen corresponding path program 66 times [2022-01-31 22:54:08,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:54:08,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277793017] [2022-01-31 22:54:08,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:54:08,736 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:54:08,737 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:54:08,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:54:08,737 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:54:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:10,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:54:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:10,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:54:10,289 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:54:10,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277793017] [2022-01-31 22:54:10,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1277793017] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:54:10,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:54:10,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2022-01-31 22:54:10,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380531851] [2022-01-31 22:54:10,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:54:10,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-01-31 22:54:10,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:54:10,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-01-31 22:54:10,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2022-01-31 22:54:10,291 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand has 71 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 70 states have internal predecessors, (76), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:54:12,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:54:12,150 INFO L93 Difference]: Finished difference Result 89 states and 91 transitions. [2022-01-31 22:54:12,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-31 22:54:12,151 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 70 states have internal predecessors, (76), 1 states have call successors, (2), 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 79 [2022-01-31 22:54:12,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:54:12,151 INFO L225 Difference]: With dead ends: 89 [2022-01-31 22:54:12,151 INFO L226 Difference]: Without dead ends: 82 [2022-01-31 22:54:12,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2345 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=7245, Invalid=11937, Unknown=0, NotChecked=0, Total=19182 [2022-01-31 22:54:12,153 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:54:12,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 31 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:54:12,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-01-31 22:54:12,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2022-01-31 22:54:12,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 78 states have (on average 1.0256410256410255) internal successors, (80), 78 states have internal predecessors, (80), 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 22:54:12,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 83 transitions. [2022-01-31 22:54:12,156 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 83 transitions. Word has length 79 [2022-01-31 22:54:12,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:54:12,157 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 83 transitions. [2022-01-31 22:54:12,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 70 states have internal predecessors, (76), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:54:12,157 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 83 transitions. [2022-01-31 22:54:12,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-31 22:54:12,157 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:54:12,157 INFO L514 BasicCegarLoop]: trace histogram [68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:54:12,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-01-31 22:54:12,158 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:54:12,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:54:12,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1895640302, now seen corresponding path program 67 times [2022-01-31 22:54:12,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:54:12,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1368222067] [2022-01-31 22:54:12,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:54:12,159 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:54:12,159 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:54:12,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:54:12,160 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:54:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:13,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:54:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:13,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:54:13,698 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:54:13,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1368222067] [2022-01-31 22:54:13,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1368222067] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:54:13,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:54:13,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2022-01-31 22:54:13,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393652144] [2022-01-31 22:54:13,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:54:13,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-01-31 22:54:13,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:54:13,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-01-31 22:54:13,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2022-01-31 22:54:13,700 INFO L87 Difference]: Start difference. First operand 82 states and 83 transitions. Second operand has 72 states, 72 states have (on average 1.0694444444444444) internal successors, (77), 71 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 22:54:15,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:54:15,770 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2022-01-31 22:54:15,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-31 22:54:15,770 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.0694444444444444) internal successors, (77), 71 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 22:54:15,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:54:15,771 INFO L225 Difference]: With dead ends: 90 [2022-01-31 22:54:15,771 INFO L226 Difference]: Without dead ends: 83 [2022-01-31 22:54:15,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2414 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=7455, Invalid=12285, Unknown=0, NotChecked=0, Total=19740 [2022-01-31 22:54:15,772 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:54:15,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 41 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:54:15,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-01-31 22:54:15,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-01-31 22:54:15,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 79 states have (on average 1.0253164556962024) internal successors, (81), 79 states have internal predecessors, (81), 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 22:54:15,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2022-01-31 22:54:15,775 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 80 [2022-01-31 22:54:15,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:54:15,775 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2022-01-31 22:54:15,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 1.0694444444444444) internal successors, (77), 71 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 22:54:15,775 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2022-01-31 22:54:15,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-31 22:54:15,775 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:54:15,775 INFO L514 BasicCegarLoop]: trace histogram [69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:54:15,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-01-31 22:54:15,776 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:54:15,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:54:15,776 INFO L85 PathProgramCache]: Analyzing trace with hash 613425555, now seen corresponding path program 68 times [2022-01-31 22:54:15,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:54:15,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077139552] [2022-01-31 22:54:15,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:54:15,777 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:54:15,777 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:54:15,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:54:15,778 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:54:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:17,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:54:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:17,357 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 22:54:17,357 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:54:17,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077139552] [2022-01-31 22:54:17,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2077139552] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:54:17,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:54:17,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73 [2022-01-31 22:54:17,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221653800] [2022-01-31 22:54:17,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:54:17,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-01-31 22:54:17,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:54:17,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-01-31 22:54:17,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2022-01-31 22:54:17,359 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand has 73 states, 73 states have (on average 1.0684931506849316) internal successors, (78), 72 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:54:19,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:54:19,316 INFO L93 Difference]: Finished difference Result 91 states and 93 transitions. [2022-01-31 22:54:19,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-31 22:54:19,316 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.0684931506849316) internal successors, (78), 72 states have internal predecessors, (78), 1 states have call successors, (2), 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 81 [2022-01-31 22:54:19,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:54:19,316 INFO L225 Difference]: With dead ends: 91 [2022-01-31 22:54:19,316 INFO L226 Difference]: Without dead ends: 84 [2022-01-31 22:54:19,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2484 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=7668, Invalid=12638, Unknown=0, NotChecked=0, Total=20306 [2022-01-31 22:54:19,318 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:54:19,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 46 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:54:19,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-01-31 22:54:19,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2022-01-31 22:54:19,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 80 states have (on average 1.025) internal successors, (82), 80 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 22:54:19,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2022-01-31 22:54:19,322 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 81 [2022-01-31 22:54:19,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:54:19,322 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2022-01-31 22:54:19,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 1.0684931506849316) internal successors, (78), 72 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:54:19,322 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2022-01-31 22:54:19,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-31 22:54:19,322 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:54:19,323 INFO L514 BasicCegarLoop]: trace histogram [70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:54:19,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-01-31 22:54:19,323 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:54:19,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:54:19,323 INFO L85 PathProgramCache]: Analyzing trace with hash -480525938, now seen corresponding path program 69 times [2022-01-31 22:54:19,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:54:19,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157927564] [2022-01-31 22:54:19,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:54:19,324 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:54:19,324 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:54:19,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:54:19,325 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:54:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:21,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:54:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:21,007 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 22:54:21,008 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:54:21,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157927564] [2022-01-31 22:54:21,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [157927564] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:54:21,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:54:21,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74 [2022-01-31 22:54:21,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076140921] [2022-01-31 22:54:21,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:54:21,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-01-31 22:54:21,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:54:21,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-01-31 22:54:21,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2630, Invalid=2772, Unknown=0, NotChecked=0, Total=5402 [2022-01-31 22:54:21,010 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand has 74 states, 74 states have (on average 1.0675675675675675) internal successors, (79), 73 states have internal predecessors, (79), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:54:23,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:54:23,013 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions. [2022-01-31 22:54:23,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-31 22:54:23,013 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.0675675675675675) internal successors, (79), 73 states have internal predecessors, (79), 1 states have call successors, (2), 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 82 [2022-01-31 22:54:23,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:54:23,014 INFO L225 Difference]: With dead ends: 92 [2022-01-31 22:54:23,014 INFO L226 Difference]: Without dead ends: 85 [2022-01-31 22:54:23,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2555 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=7884, Invalid=12996, Unknown=0, NotChecked=0, Total=20880 [2022-01-31 22:54:23,016 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:54:23,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 31 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:54:23,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-01-31 22:54:23,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2022-01-31 22:54:23,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 81 states have (on average 1.0246913580246915) internal successors, (83), 81 states have internal predecessors, (83), 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 22:54:23,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2022-01-31 22:54:23,022 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 82 [2022-01-31 22:54:23,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:54:23,022 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2022-01-31 22:54:23,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.0675675675675675) internal successors, (79), 73 states have internal predecessors, (79), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:54:23,022 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2022-01-31 22:54:23,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-31 22:54:23,022 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:54:23,022 INFO L514 BasicCegarLoop]: trace histogram [71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:54:23,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-01-31 22:54:23,023 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:54:23,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:54:23,024 INFO L85 PathProgramCache]: Analyzing trace with hash -33283853, now seen corresponding path program 70 times [2022-01-31 22:54:23,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:54:23,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241443205] [2022-01-31 22:54:23,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:54:23,025 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:54:23,025 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:54:23,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:54:23,026 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:54:23,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:24,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:54:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:24,688 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 22:54:24,688 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:54:24,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241443205] [2022-01-31 22:54:24,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [241443205] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:54:24,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:54:24,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75 [2022-01-31 22:54:24,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781061527] [2022-01-31 22:54:24,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:54:24,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-01-31 22:54:24,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:54:24,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-01-31 22:54:24,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2022-01-31 22:54:24,690 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand has 75 states, 75 states have (on average 1.0666666666666667) internal successors, (80), 74 states have internal predecessors, (80), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:54:26,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:54:26,769 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2022-01-31 22:54:26,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-01-31 22:54:26,769 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 1.0666666666666667) internal successors, (80), 74 states have internal predecessors, (80), 1 states have call successors, (2), 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 83 [2022-01-31 22:54:26,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:54:26,770 INFO L225 Difference]: With dead ends: 93 [2022-01-31 22:54:26,770 INFO L226 Difference]: Without dead ends: 86 [2022-01-31 22:54:26,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2627 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=8103, Invalid=13359, Unknown=0, NotChecked=0, Total=21462 [2022-01-31 22:54:26,772 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:54:26,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 41 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:54:26,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-01-31 22:54:26,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2022-01-31 22:54:26,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 82 states have (on average 1.024390243902439) internal successors, (84), 82 states have internal predecessors, (84), 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 22:54:26,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2022-01-31 22:54:26,776 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 83 [2022-01-31 22:54:26,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:54:26,776 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2022-01-31 22:54:26,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 1.0666666666666667) internal successors, (80), 74 states have internal predecessors, (80), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:54:26,776 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2022-01-31 22:54:26,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-31 22:54:26,777 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:54:26,777 INFO L514 BasicCegarLoop]: trace histogram [72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:54:26,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-01-31 22:54:26,777 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:54:26,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:54:26,777 INFO L85 PathProgramCache]: Analyzing trace with hash 946318894, now seen corresponding path program 71 times [2022-01-31 22:54:26,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:54:26,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796618063] [2022-01-31 22:54:26,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:54:26,778 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:54:26,779 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:54:26,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:54:26,779 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:54:26,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:28,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:54:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:28,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:54:28,532 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:54:28,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796618063] [2022-01-31 22:54:28,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [796618063] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:54:28,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:54:28,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76 [2022-01-31 22:54:28,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579170831] [2022-01-31 22:54:28,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:54:28,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-01-31 22:54:28,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:54:28,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-01-31 22:54:28,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2022-01-31 22:54:28,535 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand has 76 states, 76 states have (on average 1.0657894736842106) internal successors, (81), 75 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 22:54:30,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:54:30,719 INFO L93 Difference]: Finished difference Result 94 states and 96 transitions. [2022-01-31 22:54:30,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-31 22:54:30,720 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.0657894736842106) internal successors, (81), 75 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 22:54:30,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:54:30,720 INFO L225 Difference]: With dead ends: 94 [2022-01-31 22:54:30,720 INFO L226 Difference]: Without dead ends: 87 [2022-01-31 22:54:30,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2700 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=8325, Invalid=13727, Unknown=0, NotChecked=0, Total=22052 [2022-01-31 22:54:30,722 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:54:30,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 26 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:54:30,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-01-31 22:54:30,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2022-01-31 22:54:30,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 83 states have (on average 1.0240963855421688) internal successors, (85), 83 states have internal predecessors, (85), 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 22:54:30,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2022-01-31 22:54:30,726 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 84 [2022-01-31 22:54:30,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:54:30,726 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2022-01-31 22:54:30,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 1.0657894736842106) internal successors, (81), 75 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 22:54:30,726 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2022-01-31 22:54:30,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-31 22:54:30,726 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:54:30,726 INFO L514 BasicCegarLoop]: trace histogram [73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:54:30,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-01-31 22:54:30,726 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:54:30,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:54:30,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1249232979, now seen corresponding path program 72 times [2022-01-31 22:54:30,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:54:30,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003242990] [2022-01-31 22:54:30,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:54:30,727 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:54:30,728 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:54:30,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:54:30,728 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:54:30,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:32,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:54:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:32,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:54:32,456 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:54:32,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003242990] [2022-01-31 22:54:32,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1003242990] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:54:32,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:54:32,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77 [2022-01-31 22:54:32,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328726757] [2022-01-31 22:54:32,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:54:32,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-01-31 22:54:32,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:54:32,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-01-31 22:54:32,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2852, Invalid=3000, Unknown=0, NotChecked=0, Total=5852 [2022-01-31 22:54:32,458 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand has 77 states, 77 states have (on average 1.0649350649350648) internal successors, (82), 76 states have internal predecessors, (82), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:54:34,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:54:34,611 INFO L93 Difference]: Finished difference Result 95 states and 97 transitions. [2022-01-31 22:54:34,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-31 22:54:34,611 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 1.0649350649350648) internal successors, (82), 76 states have internal predecessors, (82), 1 states have call successors, (2), 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 85 [2022-01-31 22:54:34,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:54:34,612 INFO L225 Difference]: With dead ends: 95 [2022-01-31 22:54:34,612 INFO L226 Difference]: Without dead ends: 88 [2022-01-31 22:54:34,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2774 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=8550, Invalid=14100, Unknown=0, NotChecked=0, Total=22650 [2022-01-31 22:54:34,614 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:54:34,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 26 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:54:34,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-01-31 22:54:34,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2022-01-31 22:54:34,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 84 states have (on average 1.0238095238095237) internal successors, (86), 84 states have internal predecessors, (86), 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 22:54:34,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2022-01-31 22:54:34,617 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 85 [2022-01-31 22:54:34,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:54:34,618 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2022-01-31 22:54:34,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 1.0649350649350648) internal successors, (82), 76 states have internal predecessors, (82), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:54:34,618 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2022-01-31 22:54:34,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-31 22:54:34,618 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:54:34,618 INFO L514 BasicCegarLoop]: trace histogram [74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:54:34,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-01-31 22:54:34,618 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:54:34,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:54:34,619 INFO L85 PathProgramCache]: Analyzing trace with hash 2049635022, now seen corresponding path program 73 times [2022-01-31 22:54:34,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:54:34,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440906939] [2022-01-31 22:54:34,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:54:34,620 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:54:34,620 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:54:34,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:54:34,621 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:54:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:36,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:54:36,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:36,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:54:36,440 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:54:36,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440906939] [2022-01-31 22:54:36,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [440906939] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:54:36,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:54:36,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78 [2022-01-31 22:54:36,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731531674] [2022-01-31 22:54:36,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:54:36,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-01-31 22:54:36,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:54:36,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-01-31 22:54:36,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006 [2022-01-31 22:54:36,442 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand has 78 states, 78 states have (on average 1.064102564102564) internal successors, (83), 77 states have internal predecessors, (83), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:54:38,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:54:38,642 INFO L93 Difference]: Finished difference Result 96 states and 98 transitions. [2022-01-31 22:54:38,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-01-31 22:54:38,642 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 1.064102564102564) internal successors, (83), 77 states have internal predecessors, (83), 1 states have call successors, (2), 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 86 [2022-01-31 22:54:38,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:54:38,643 INFO L225 Difference]: With dead ends: 96 [2022-01-31 22:54:38,643 INFO L226 Difference]: Without dead ends: 89 [2022-01-31 22:54:38,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2849 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=8778, Invalid=14478, Unknown=0, NotChecked=0, Total=23256 [2022-01-31 22:54:38,644 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:54:38,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 26 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:54:38,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-01-31 22:54:38,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-01-31 22:54:38,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 85 states have (on average 1.0235294117647058) internal successors, (87), 85 states have internal predecessors, (87), 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 22:54:38,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2022-01-31 22:54:38,647 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 86 [2022-01-31 22:54:38,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:54:38,647 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2022-01-31 22:54:38,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 1.064102564102564) internal successors, (83), 77 states have internal predecessors, (83), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:54:38,647 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2022-01-31 22:54:38,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-31 22:54:38,648 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:54:38,648 INFO L514 BasicCegarLoop]: trace histogram [75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:54:38,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-01-31 22:54:38,648 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:54:38,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:54:38,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1092294579, now seen corresponding path program 74 times [2022-01-31 22:54:38,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:54:38,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189573327] [2022-01-31 22:54:38,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:54:38,649 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:54:38,649 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:54:38,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:54:38,650 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:54:38,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:40,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:54:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:40,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:54:40,456 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:54:40,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189573327] [2022-01-31 22:54:40,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [189573327] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:54:40,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:54:40,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [79] imperfect sequences [] total 79 [2022-01-31 22:54:40,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041676208] [2022-01-31 22:54:40,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:54:40,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-01-31 22:54:40,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:54:40,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-01-31 22:54:40,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2022-01-31 22:54:40,458 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand has 79 states, 79 states have (on average 1.0632911392405062) internal successors, (84), 78 states have internal predecessors, (84), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:54:42,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:54:42,728 INFO L93 Difference]: Finished difference Result 97 states and 99 transitions. [2022-01-31 22:54:42,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-01-31 22:54:42,729 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 1.0632911392405062) internal successors, (84), 78 states have internal predecessors, (84), 1 states have call successors, (2), 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 87 [2022-01-31 22:54:42,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:54:42,729 INFO L225 Difference]: With dead ends: 97 [2022-01-31 22:54:42,729 INFO L226 Difference]: Without dead ends: 90 [2022-01-31 22:54:42,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2925 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=9009, Invalid=14861, Unknown=0, NotChecked=0, Total=23870 [2022-01-31 22:54:42,731 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:54:42,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 36 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:54:42,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-01-31 22:54:42,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2022-01-31 22:54:42,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 86 states have (on average 1.0232558139534884) internal successors, (88), 86 states have internal predecessors, (88), 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 22:54:42,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions. [2022-01-31 22:54:42,735 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 87 [2022-01-31 22:54:42,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:54:42,735 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 91 transitions. [2022-01-31 22:54:42,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 1.0632911392405062) internal successors, (84), 78 states have internal predecessors, (84), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:54:42,735 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 91 transitions. [2022-01-31 22:54:42,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-31 22:54:42,736 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:54:42,736 INFO L514 BasicCegarLoop]: trace histogram [76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:54:42,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-01-31 22:54:42,736 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:54:42,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:54:42,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1479511918, now seen corresponding path program 75 times [2022-01-31 22:54:42,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:54:42,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243417378] [2022-01-31 22:54:42,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:54:42,737 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:54:42,738 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:54:42,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:54:42,738 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:54:42,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:44,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:54:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:44,664 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 22:54:44,664 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:54:44,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243417378] [2022-01-31 22:54:44,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1243417378] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:54:44,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:54:44,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80 [2022-01-31 22:54:44,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738822058] [2022-01-31 22:54:44,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:54:44,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-01-31 22:54:44,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:54:44,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-01-31 22:54:44,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3083, Invalid=3237, Unknown=0, NotChecked=0, Total=6320 [2022-01-31 22:54:44,666 INFO L87 Difference]: Start difference. First operand 90 states and 91 transitions. Second operand has 80 states, 80 states have (on average 1.0625) internal successors, (85), 79 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 22:54:47,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:54:47,049 INFO L93 Difference]: Finished difference Result 98 states and 100 transitions. [2022-01-31 22:54:47,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-31 22:54:47,050 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.0625) internal successors, (85), 79 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 22:54:47,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:54:47,050 INFO L225 Difference]: With dead ends: 98 [2022-01-31 22:54:47,050 INFO L226 Difference]: Without dead ends: 91 [2022-01-31 22:54:47,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3002 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=9243, Invalid=15249, Unknown=0, NotChecked=0, Total=24492 [2022-01-31 22:54:47,051 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:54:47,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 46 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:54:47,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-01-31 22:54:47,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-01-31 22:54:47,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 87 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 22:54:47,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2022-01-31 22:54:47,054 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 88 [2022-01-31 22:54:47,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:54:47,054 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2022-01-31 22:54:47,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 1.0625) internal successors, (85), 79 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 22:54:47,054 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2022-01-31 22:54:47,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-31 22:54:47,055 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:54:47,055 INFO L514 BasicCegarLoop]: trace histogram [77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:54:47,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-01-31 22:54:47,055 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:54:47,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:54:47,055 INFO L85 PathProgramCache]: Analyzing trace with hash 598347539, now seen corresponding path program 76 times [2022-01-31 22:54:47,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:54:47,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307580798] [2022-01-31 22:54:47,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:54:47,056 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:54:47,056 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:54:47,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:54:47,057 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:54:47,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:49,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:54:49,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:49,007 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 22:54:49,007 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:54:49,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307580798] [2022-01-31 22:54:49,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [307580798] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:54:49,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:54:49,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [81] imperfect sequences [] total 81 [2022-01-31 22:54:49,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574340102] [2022-01-31 22:54:49,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:54:49,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-01-31 22:54:49,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:54:49,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-01-31 22:54:49,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480 [2022-01-31 22:54:49,009 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand has 81 states, 81 states have (on average 1.0617283950617284) internal successors, (86), 80 states have internal predecessors, (86), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:54:51,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:54:51,437 INFO L93 Difference]: Finished difference Result 99 states and 101 transitions. [2022-01-31 22:54:51,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-31 22:54:51,438 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 1.0617283950617284) internal successors, (86), 80 states have internal predecessors, (86), 1 states have call successors, (2), 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 89 [2022-01-31 22:54:51,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:54:51,438 INFO L225 Difference]: With dead ends: 99 [2022-01-31 22:54:51,438 INFO L226 Difference]: Without dead ends: 92 [2022-01-31 22:54:51,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3080 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=9480, Invalid=15642, Unknown=0, NotChecked=0, Total=25122 [2022-01-31 22:54:51,440 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:54:51,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 41 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:54:51,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-01-31 22:54:51,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2022-01-31 22:54:51,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 88 states have (on average 1.0227272727272727) internal successors, (90), 88 states have internal predecessors, (90), 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 22:54:51,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 93 transitions. [2022-01-31 22:54:51,444 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 93 transitions. Word has length 89 [2022-01-31 22:54:51,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:54:51,444 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 93 transitions. [2022-01-31 22:54:51,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 1.0617283950617284) internal successors, (86), 80 states have internal predecessors, (86), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:54:51,444 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 93 transitions. [2022-01-31 22:54:51,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-31 22:54:51,444 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:54:51,444 INFO L514 BasicCegarLoop]: trace histogram [78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:54:51,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-01-31 22:54:51,445 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:54:51,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:54:51,445 INFO L85 PathProgramCache]: Analyzing trace with hash -947944434, now seen corresponding path program 77 times [2022-01-31 22:54:51,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:54:51,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448835778] [2022-01-31 22:54:51,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:54:51,446 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:54:51,446 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:54:51,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:54:51,447 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:54:51,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:53,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:54:53,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:53,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:54:53,400 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:54:53,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448835778] [2022-01-31 22:54:53,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1448835778] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:54:53,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:54:53,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [82] imperfect sequences [] total 82 [2022-01-31 22:54:53,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668787678] [2022-01-31 22:54:53,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:54:53,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-01-31 22:54:53,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:54:53,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-01-31 22:54:53,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642 [2022-01-31 22:54:53,402 INFO L87 Difference]: Start difference. First operand 92 states and 93 transitions. Second operand has 82 states, 82 states have (on average 1.0609756097560976) internal successors, (87), 81 states have internal predecessors, (87), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:54:55,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:54:55,835 INFO L93 Difference]: Finished difference Result 100 states and 102 transitions. [2022-01-31 22:54:55,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-01-31 22:54:55,836 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 1.0609756097560976) internal successors, (87), 81 states have internal predecessors, (87), 1 states have call successors, (2), 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 90 [2022-01-31 22:54:55,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:54:55,836 INFO L225 Difference]: With dead ends: 100 [2022-01-31 22:54:55,836 INFO L226 Difference]: Without dead ends: 93 [2022-01-31 22:54:55,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3159 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=9720, Invalid=16040, Unknown=0, NotChecked=0, Total=25760 [2022-01-31 22:54:55,838 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:54:55,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 46 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:54:55,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-01-31 22:54:55,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2022-01-31 22:54:55,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 89 states have (on average 1.0224719101123596) internal successors, (91), 89 states have internal predecessors, (91), 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 22:54:55,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2022-01-31 22:54:55,840 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 90 [2022-01-31 22:54:55,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:54:55,840 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2022-01-31 22:54:55,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 1.0609756097560976) internal successors, (87), 81 states have internal predecessors, (87), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:54:55,841 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2022-01-31 22:54:55,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-31 22:54:55,841 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:54:55,841 INFO L514 BasicCegarLoop]: trace histogram [79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:54:55,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-01-31 22:54:55,841 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:54:55,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:54:55,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1638355341, now seen corresponding path program 78 times [2022-01-31 22:54:55,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:54:55,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790580287] [2022-01-31 22:54:55,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:54:55,842 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:54:55,842 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:54:55,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:54:55,843 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:54:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:57,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:54:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:57,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:54:57,886 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:54:57,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1790580287] [2022-01-31 22:54:57,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1790580287] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:54:57,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:54:57,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [83] imperfect sequences [] total 83 [2022-01-31 22:54:57,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151601585] [2022-01-31 22:54:57,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:54:57,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-01-31 22:54:57,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:54:57,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-01-31 22:54:57,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806 [2022-01-31 22:54:57,888 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand has 83 states, 83 states have (on average 1.0602409638554218) internal successors, (88), 82 states have internal predecessors, (88), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:00,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:00,392 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2022-01-31 22:55:00,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-01-31 22:55:00,392 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 1.0602409638554218) internal successors, (88), 82 states have internal predecessors, (88), 1 states have call successors, (2), 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 91 [2022-01-31 22:55:00,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:00,393 INFO L225 Difference]: With dead ends: 101 [2022-01-31 22:55:00,393 INFO L226 Difference]: Without dead ends: 94 [2022-01-31 22:55:00,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3239 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=9963, Invalid=16443, Unknown=0, NotChecked=0, Total=26406 [2022-01-31 22:55:00,395 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:00,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 26 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:55:00,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-01-31 22:55:00,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2022-01-31 22:55:00,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 90 states have (on average 1.0222222222222221) internal successors, (92), 90 states have internal predecessors, (92), 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 22:55:00,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2022-01-31 22:55:00,397 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 91 [2022-01-31 22:55:00,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:00,397 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2022-01-31 22:55:00,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 1.0602409638554218) internal successors, (88), 82 states have internal predecessors, (88), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:00,398 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2022-01-31 22:55:00,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-31 22:55:00,398 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:00,398 INFO L514 BasicCegarLoop]: trace histogram [80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:00,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-01-31 22:55:00,398 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:00,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:00,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1566256978, now seen corresponding path program 79 times [2022-01-31 22:55:00,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:00,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993787695] [2022-01-31 22:55:00,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:00,400 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:00,400 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:00,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:00,401 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:02,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:02,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:55:02,492 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:02,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993787695] [2022-01-31 22:55:02,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1993787695] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:02,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:02,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84 [2022-01-31 22:55:02,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945528305] [2022-01-31 22:55:02,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:02,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-01-31 22:55:02,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:02,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-01-31 22:55:02,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3405, Invalid=3567, Unknown=0, NotChecked=0, Total=6972 [2022-01-31 22:55:02,494 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand has 84 states, 84 states have (on average 1.0595238095238095) internal successors, (89), 83 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 22:55:05,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:05,054 INFO L93 Difference]: Finished difference Result 102 states and 104 transitions. [2022-01-31 22:55:05,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-31 22:55:05,055 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.0595238095238095) internal successors, (89), 83 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 22:55:05,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:05,055 INFO L225 Difference]: With dead ends: 102 [2022-01-31 22:55:05,055 INFO L226 Difference]: Without dead ends: 95 [2022-01-31 22:55:05,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3320 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=10209, Invalid=16851, Unknown=0, NotChecked=0, Total=27060 [2022-01-31 22:55:05,056 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:05,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 41 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:55:05,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-01-31 22:55:05,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2022-01-31 22:55:05,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 91 states have (on average 1.021978021978022) internal successors, (93), 91 states have internal predecessors, (93), 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 22:55:05,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2022-01-31 22:55:05,059 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 92 [2022-01-31 22:55:05,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:05,059 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2022-01-31 22:55:05,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 1.0595238095238095) internal successors, (89), 83 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 22:55:05,059 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2022-01-31 22:55:05,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-31 22:55:05,060 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:05,060 INFO L514 BasicCegarLoop]: trace histogram [81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:05,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-01-31 22:55:05,060 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:05,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:05,060 INFO L85 PathProgramCache]: Analyzing trace with hash 668792275, now seen corresponding path program 80 times [2022-01-31 22:55:05,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:05,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2088723329] [2022-01-31 22:55:05,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:05,061 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:05,061 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:05,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:05,062 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:05,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:07,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:07,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:07,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:55:07,187 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:07,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2088723329] [2022-01-31 22:55:07,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2088723329] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:07,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:07,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [] total 85 [2022-01-31 22:55:07,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337703377] [2022-01-31 22:55:07,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:07,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2022-01-31 22:55:07,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:07,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2022-01-31 22:55:07,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2022-01-31 22:55:07,189 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand has 85 states, 85 states have (on average 1.0588235294117647) internal successors, (90), 84 states have internal predecessors, (90), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:09,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:09,802 INFO L93 Difference]: Finished difference Result 103 states and 105 transitions. [2022-01-31 22:55:09,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-01-31 22:55:09,802 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 1.0588235294117647) internal successors, (90), 84 states have internal predecessors, (90), 1 states have call successors, (2), 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 93 [2022-01-31 22:55:09,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:09,803 INFO L225 Difference]: With dead ends: 103 [2022-01-31 22:55:09,803 INFO L226 Difference]: Without dead ends: 96 [2022-01-31 22:55:09,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3402 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=10458, Invalid=17264, Unknown=0, NotChecked=0, Total=27722 [2022-01-31 22:55:09,804 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:09,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 46 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:55:09,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-01-31 22:55:09,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2022-01-31 22:55:09,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 92 states have (on average 1.0217391304347827) internal successors, (94), 92 states have internal predecessors, (94), 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 22:55:09,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2022-01-31 22:55:09,808 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 93 [2022-01-31 22:55:09,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:09,808 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2022-01-31 22:55:09,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 1.0588235294117647) internal successors, (90), 84 states have internal predecessors, (90), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:09,808 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2022-01-31 22:55:09,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-31 22:55:09,809 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:09,809 INFO L514 BasicCegarLoop]: trace histogram [82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:09,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-01-31 22:55:09,809 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:09,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:09,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1235842382, now seen corresponding path program 81 times [2022-01-31 22:55:09,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:09,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846143469] [2022-01-31 22:55:09,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:09,810 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:09,810 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:09,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:09,811 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:09,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:12,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:12,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:12,006 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 22:55:12,006 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:12,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846143469] [2022-01-31 22:55:12,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [846143469] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:12,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:12,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [86] imperfect sequences [] total 86 [2022-01-31 22:55:12,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832439622] [2022-01-31 22:55:12,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:12,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-01-31 22:55:12,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:12,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-01-31 22:55:12,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3572, Invalid=3738, Unknown=0, NotChecked=0, Total=7310 [2022-01-31 22:55:12,008 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 86 states, 86 states have (on average 1.058139534883721) internal successors, (91), 85 states have internal predecessors, (91), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:14,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:14,692 INFO L93 Difference]: Finished difference Result 104 states and 106 transitions. [2022-01-31 22:55:14,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-01-31 22:55:14,692 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 1.058139534883721) internal successors, (91), 85 states have internal predecessors, (91), 1 states have call successors, (2), 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 94 [2022-01-31 22:55:14,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:14,692 INFO L225 Difference]: With dead ends: 104 [2022-01-31 22:55:14,692 INFO L226 Difference]: Without dead ends: 97 [2022-01-31 22:55:14,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3485 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=10710, Invalid=17682, Unknown=0, NotChecked=0, Total=28392 [2022-01-31 22:55:14,694 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:14,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 41 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:55:14,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-01-31 22:55:14,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2022-01-31 22:55:14,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 93 states have (on average 1.021505376344086) internal successors, (95), 93 states have internal predecessors, (95), 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 22:55:14,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2022-01-31 22:55:14,697 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 94 [2022-01-31 22:55:14,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:14,698 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2022-01-31 22:55:14,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 1.058139534883721) internal successors, (91), 85 states have internal predecessors, (91), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:14,698 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2022-01-31 22:55:14,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-31 22:55:14,698 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:14,698 INFO L514 BasicCegarLoop]: trace histogram [83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:14,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-01-31 22:55:14,698 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:14,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:14,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1634526515, now seen corresponding path program 82 times [2022-01-31 22:55:14,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:14,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975629989] [2022-01-31 22:55:14,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:14,700 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:14,700 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:14,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:14,701 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:14,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:16,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:16,892 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 22:55:16,892 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:16,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975629989] [2022-01-31 22:55:16,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [975629989] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:16,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:16,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [87] imperfect sequences [] total 87 [2022-01-31 22:55:16,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59003578] [2022-01-31 22:55:16,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:16,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-01-31 22:55:16,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:16,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-01-31 22:55:16,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2022-01-31 22:55:16,895 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand has 87 states, 87 states have (on average 1.0574712643678161) internal successors, (92), 86 states have internal predecessors, (92), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:19,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:19,617 INFO L93 Difference]: Finished difference Result 105 states and 107 transitions. [2022-01-31 22:55:19,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-01-31 22:55:19,618 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 1.0574712643678161) internal successors, (92), 86 states have internal predecessors, (92), 1 states have call successors, (2), 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 95 [2022-01-31 22:55:19,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:19,618 INFO L225 Difference]: With dead ends: 105 [2022-01-31 22:55:19,619 INFO L226 Difference]: Without dead ends: 98 [2022-01-31 22:55:19,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3569 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=10965, Invalid=18105, Unknown=0, NotChecked=0, Total=29070 [2022-01-31 22:55:19,620 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:19,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 31 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:55:19,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-01-31 22:55:19,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-01-31 22:55:19,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 94 states have (on average 1.0212765957446808) internal successors, (96), 94 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 22:55:19,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2022-01-31 22:55:19,624 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 95 [2022-01-31 22:55:19,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:19,624 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2022-01-31 22:55:19,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 1.0574712643678161) internal successors, (92), 86 states have internal predecessors, (92), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:19,624 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2022-01-31 22:55:19,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-31 22:55:19,624 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:19,624 INFO L514 BasicCegarLoop]: trace histogram [84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:19,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-01-31 22:55:19,625 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:19,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:19,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1108832750, now seen corresponding path program 83 times [2022-01-31 22:55:19,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:19,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200242426] [2022-01-31 22:55:19,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:19,626 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:19,626 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:19,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:19,627 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:19,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:21,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:21,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:55:21,909 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:21,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200242426] [2022-01-31 22:55:21,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1200242426] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:21,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:21,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [88] imperfect sequences [] total 88 [2022-01-31 22:55:21,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408711573] [2022-01-31 22:55:21,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:21,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-01-31 22:55:21,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:21,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-01-31 22:55:21,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656 [2022-01-31 22:55:21,912 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand has 88 states, 88 states have (on average 1.0568181818181819) internal successors, (93), 87 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 22:55:24,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:24,703 INFO L93 Difference]: Finished difference Result 106 states and 108 transitions. [2022-01-31 22:55:24,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-31 22:55:24,704 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 1.0568181818181819) internal successors, (93), 87 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 22:55:24,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:24,704 INFO L225 Difference]: With dead ends: 106 [2022-01-31 22:55:24,704 INFO L226 Difference]: Without dead ends: 99 [2022-01-31 22:55:24,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3654 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=11223, Invalid=18533, Unknown=0, NotChecked=0, Total=29756 [2022-01-31 22:55:24,706 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:24,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 41 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:55:24,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-01-31 22:55:24,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2022-01-31 22:55:24,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 95 states have (on average 1.0210526315789474) internal successors, (97), 95 states have internal predecessors, (97), 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 22:55:24,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2022-01-31 22:55:24,710 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 96 [2022-01-31 22:55:24,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:24,711 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2022-01-31 22:55:24,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 1.0568181818181819) internal successors, (93), 87 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 22:55:24,711 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2022-01-31 22:55:24,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-31 22:55:24,711 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:24,711 INFO L514 BasicCegarLoop]: trace histogram [85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:24,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-01-31 22:55:24,711 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:24,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:24,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1992195219, now seen corresponding path program 84 times [2022-01-31 22:55:24,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:24,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341208425] [2022-01-31 22:55:24,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:24,713 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:24,713 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:24,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:24,713 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:24,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:27,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:27,004 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 22:55:27,004 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:27,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341208425] [2022-01-31 22:55:27,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1341208425] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:27,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:27,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [89] imperfect sequences [] total 89 [2022-01-31 22:55:27,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570141260] [2022-01-31 22:55:27,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:27,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-01-31 22:55:27,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:27,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-01-31 22:55:27,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3830, Invalid=4002, Unknown=0, NotChecked=0, Total=7832 [2022-01-31 22:55:27,006 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand has 89 states, 89 states have (on average 1.0561797752808988) internal successors, (94), 88 states have internal predecessors, (94), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:29,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:29,846 INFO L93 Difference]: Finished difference Result 107 states and 109 transitions. [2022-01-31 22:55:29,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-01-31 22:55:29,848 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 1.0561797752808988) internal successors, (94), 88 states have internal predecessors, (94), 1 states have call successors, (2), 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 97 [2022-01-31 22:55:29,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:29,849 INFO L225 Difference]: With dead ends: 107 [2022-01-31 22:55:29,849 INFO L226 Difference]: Without dead ends: 100 [2022-01-31 22:55:29,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3740 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=11484, Invalid=18966, Unknown=0, NotChecked=0, Total=30450 [2022-01-31 22:55:29,850 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:29,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 36 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:55:29,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-01-31 22:55:29,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-01-31 22:55:29,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 96 states have (on average 1.0208333333333333) internal successors, (98), 96 states have internal predecessors, (98), 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 22:55:29,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 101 transitions. [2022-01-31 22:55:29,853 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 101 transitions. Word has length 97 [2022-01-31 22:55:29,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:29,853 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 101 transitions. [2022-01-31 22:55:29,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 1.0561797752808988) internal successors, (94), 88 states have internal predecessors, (94), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:29,854 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 101 transitions. [2022-01-31 22:55:29,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-31 22:55:29,854 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:29,854 INFO L514 BasicCegarLoop]: trace histogram [86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:29,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-01-31 22:55:29,854 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:29,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:29,855 INFO L85 PathProgramCache]: Analyzing trace with hash -688339314, now seen corresponding path program 85 times [2022-01-31 22:55:29,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:29,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669989847] [2022-01-31 22:55:29,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:29,856 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:29,856 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:29,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:29,857 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:29,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:32,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:32,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:55:32,207 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:32,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669989847] [2022-01-31 22:55:32,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1669989847] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:32,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:32,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [90] imperfect sequences [] total 90 [2022-01-31 22:55:32,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225815245] [2022-01-31 22:55:32,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:32,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-01-31 22:55:32,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:32,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-01-31 22:55:32,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3918, Invalid=4092, Unknown=0, NotChecked=0, Total=8010 [2022-01-31 22:55:32,208 INFO L87 Difference]: Start difference. First operand 100 states and 101 transitions. Second operand has 90 states, 90 states have (on average 1.0555555555555556) internal successors, (95), 89 states have internal predecessors, (95), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:35,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:35,144 INFO L93 Difference]: Finished difference Result 108 states and 110 transitions. [2022-01-31 22:55:35,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-01-31 22:55:35,145 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 1.0555555555555556) internal successors, (95), 89 states have internal predecessors, (95), 1 states have call successors, (2), 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 98 [2022-01-31 22:55:35,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:35,145 INFO L225 Difference]: With dead ends: 108 [2022-01-31 22:55:35,145 INFO L226 Difference]: Without dead ends: 101 [2022-01-31 22:55:35,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3827 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=11748, Invalid=19404, Unknown=0, NotChecked=0, Total=31152 [2022-01-31 22:55:35,147 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:35,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 41 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:55:35,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-01-31 22:55:35,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2022-01-31 22:55:35,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 97 states have (on average 1.0206185567010309) internal successors, (99), 97 states have internal predecessors, (99), 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 22:55:35,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2022-01-31 22:55:35,150 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 98 [2022-01-31 22:55:35,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:35,150 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2022-01-31 22:55:35,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 1.0555555555555556) internal successors, (95), 89 states have internal predecessors, (95), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:35,151 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2022-01-31 22:55:35,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-31 22:55:35,151 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:35,151 INFO L514 BasicCegarLoop]: trace histogram [87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:35,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-01-31 22:55:35,151 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:35,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:35,151 INFO L85 PathProgramCache]: Analyzing trace with hash 2114436083, now seen corresponding path program 86 times [2022-01-31 22:55:35,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:35,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659601370] [2022-01-31 22:55:35,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:35,152 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:35,152 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:35,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:35,153 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:37,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:37,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:37,586 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 22:55:37,586 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:37,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659601370] [2022-01-31 22:55:37,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [659601370] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:37,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:37,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [91] imperfect sequences [] total 91 [2022-01-31 22:55:37,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198102675] [2022-01-31 22:55:37,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:37,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-01-31 22:55:37,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:37,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-01-31 22:55:37,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2022-01-31 22:55:37,588 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand has 91 states, 91 states have (on average 1.054945054945055) internal successors, (96), 90 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:40,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:40,575 INFO L93 Difference]: Finished difference Result 109 states and 111 transitions. [2022-01-31 22:55:40,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-01-31 22:55:40,575 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 1.054945054945055) internal successors, (96), 90 states have internal predecessors, (96), 1 states have call successors, (2), 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 99 [2022-01-31 22:55:40,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:40,575 INFO L225 Difference]: With dead ends: 109 [2022-01-31 22:55:40,576 INFO L226 Difference]: Without dead ends: 102 [2022-01-31 22:55:40,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3915 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=12015, Invalid=19847, Unknown=0, NotChecked=0, Total=31862 [2022-01-31 22:55:40,577 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:40,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 46 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:55:40,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-01-31 22:55:40,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2022-01-31 22:55:40,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 98 states have (on average 1.0204081632653061) internal successors, (100), 98 states have internal predecessors, (100), 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 22:55:40,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 103 transitions. [2022-01-31 22:55:40,582 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 103 transitions. Word has length 99 [2022-01-31 22:55:40,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:40,582 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 103 transitions. [2022-01-31 22:55:40,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 1.054945054945055) internal successors, (96), 90 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:40,582 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 103 transitions. [2022-01-31 22:55:40,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-31 22:55:40,582 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:40,583 INFO L514 BasicCegarLoop]: trace histogram [88, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:40,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-01-31 22:55:40,583 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:40,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:40,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1193839826, now seen corresponding path program 87 times [2022-01-31 22:55:40,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:40,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819712940] [2022-01-31 22:55:40,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:40,584 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:40,584 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:40,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:40,585 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:40,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:43,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:43,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:55:43,038 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:43,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819712940] [2022-01-31 22:55:43,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1819712940] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:43,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:43,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [92] imperfect sequences [] total 92 [2022-01-31 22:55:43,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049685292] [2022-01-31 22:55:43,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:43,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-01-31 22:55:43,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:43,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-01-31 22:55:43,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4097, Invalid=4275, Unknown=0, NotChecked=0, Total=8372 [2022-01-31 22:55:43,040 INFO L87 Difference]: Start difference. First operand 102 states and 103 transitions. Second operand has 92 states, 92 states have (on average 1.0543478260869565) internal successors, (97), 91 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 22:55:46,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:46,075 INFO L93 Difference]: Finished difference Result 110 states and 112 transitions. [2022-01-31 22:55:46,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-01-31 22:55:46,075 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 1.0543478260869565) internal successors, (97), 91 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 22:55:46,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:46,076 INFO L225 Difference]: With dead ends: 110 [2022-01-31 22:55:46,076 INFO L226 Difference]: Without dead ends: 103 [2022-01-31 22:55:46,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4004 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=12285, Invalid=20295, Unknown=0, NotChecked=0, Total=32580 [2022-01-31 22:55:46,078 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:46,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 46 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:55:46,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-01-31 22:55:46,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2022-01-31 22:55:46,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 99 states have (on average 1.02020202020202) internal successors, (101), 99 states have internal predecessors, (101), 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 22:55:46,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2022-01-31 22:55:46,081 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 100 [2022-01-31 22:55:46,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:46,081 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2022-01-31 22:55:46,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 1.0543478260869565) internal successors, (97), 91 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 22:55:46,081 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2022-01-31 22:55:46,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-31 22:55:46,082 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:46,082 INFO L514 BasicCegarLoop]: trace histogram [89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:46,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-01-31 22:55:46,082 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:46,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:46,082 INFO L85 PathProgramCache]: Analyzing trace with hash -671177901, now seen corresponding path program 88 times [2022-01-31 22:55:46,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:46,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962999283] [2022-01-31 22:55:46,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:46,083 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:46,083 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:46,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:46,084 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:48,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:48,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:48,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:55:48,598 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:48,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962999283] [2022-01-31 22:55:48,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [962999283] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:48,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:48,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [93] imperfect sequences [] total 93 [2022-01-31 22:55:48,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219353272] [2022-01-31 22:55:48,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:48,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-01-31 22:55:48,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:48,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-01-31 22:55:48,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556 [2022-01-31 22:55:48,600 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand has 93 states, 93 states have (on average 1.053763440860215) internal successors, (98), 92 states have internal predecessors, (98), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:51,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:51,707 INFO L93 Difference]: Finished difference Result 111 states and 113 transitions. [2022-01-31 22:55:51,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-01-31 22:55:51,708 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 1.053763440860215) internal successors, (98), 92 states have internal predecessors, (98), 1 states have call successors, (2), 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 101 [2022-01-31 22:55:51,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:51,708 INFO L225 Difference]: With dead ends: 111 [2022-01-31 22:55:51,708 INFO L226 Difference]: Without dead ends: 104 [2022-01-31 22:55:51,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4094 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=12558, Invalid=20748, Unknown=0, NotChecked=0, Total=33306 [2022-01-31 22:55:51,710 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:51,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 61 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:55:51,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-01-31 22:55:51,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2022-01-31 22:55:51,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 100 states have (on average 1.02) internal successors, (102), 100 states have internal predecessors, (102), 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 22:55:51,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2022-01-31 22:55:51,714 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 101 [2022-01-31 22:55:51,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:51,715 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2022-01-31 22:55:51,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 1.053763440860215) internal successors, (98), 92 states have internal predecessors, (98), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:51,715 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2022-01-31 22:55:51,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-31 22:55:51,715 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:51,715 INFO L514 BasicCegarLoop]: trace histogram [90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:51,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-01-31 22:55:51,716 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:51,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:51,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1648527410, now seen corresponding path program 89 times [2022-01-31 22:55:51,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:51,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255851031] [2022-01-31 22:55:51,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:51,717 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:51,717 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:51,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:51,718 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:51,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:54,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:54,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:54,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:55:54,305 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:54,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255851031] [2022-01-31 22:55:54,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1255851031] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:54,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:54,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [94] imperfect sequences [] total 94 [2022-01-31 22:55:54,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553556235] [2022-01-31 22:55:54,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:54,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-01-31 22:55:54,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:54,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-01-31 22:55:54,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742 [2022-01-31 22:55:54,307 INFO L87 Difference]: Start difference. First operand 104 states and 105 transitions. Second operand has 94 states, 94 states have (on average 1.053191489361702) internal successors, (99), 93 states have internal predecessors, (99), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:57,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:57,496 INFO L93 Difference]: Finished difference Result 112 states and 114 transitions. [2022-01-31 22:55:57,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-01-31 22:55:57,496 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 1.053191489361702) internal successors, (99), 93 states have internal predecessors, (99), 1 states have call successors, (2), 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 102 [2022-01-31 22:55:57,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:57,496 INFO L225 Difference]: With dead ends: 112 [2022-01-31 22:55:57,497 INFO L226 Difference]: Without dead ends: 105 [2022-01-31 22:55:57,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4185 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=12834, Invalid=21206, Unknown=0, NotChecked=0, Total=34040 [2022-01-31 22:55:57,498 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:57,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 31 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:55:57,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-01-31 22:55:57,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2022-01-31 22:55:57,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 101 states have (on average 1.0198019801980198) internal successors, (103), 101 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 22:55:57,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2022-01-31 22:55:57,503 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 102 [2022-01-31 22:55:57,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:57,503 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2022-01-31 22:55:57,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 1.053191489361702) internal successors, (99), 93 states have internal predecessors, (99), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:57,503 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2022-01-31 22:55:57,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-31 22:55:57,504 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:57,504 INFO L514 BasicCegarLoop]: trace histogram [91, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:57,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-01-31 22:55:57,504 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:57,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:57,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1881591117, now seen corresponding path program 90 times [2022-01-31 22:55:57,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:57,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130375845] [2022-01-31 22:55:57,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:57,505 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:57,505 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:57,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:57,506 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:57,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:00,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:00,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:00,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:00,162 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:00,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130375845] [2022-01-31 22:56:00,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1130375845] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:00,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:00,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [95] imperfect sequences [] total 95 [2022-01-31 22:56:00,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28487977] [2022-01-31 22:56:00,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:00,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-01-31 22:56:00,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:00,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-01-31 22:56:00,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930 [2022-01-31 22:56:00,164 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand has 95 states, 95 states have (on average 1.0526315789473684) internal successors, (100), 94 states have internal predecessors, (100), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:03,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:03,422 INFO L93 Difference]: Finished difference Result 113 states and 115 transitions. [2022-01-31 22:56:03,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-01-31 22:56:03,422 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 1.0526315789473684) internal successors, (100), 94 states have internal predecessors, (100), 1 states have call successors, (2), 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 103 [2022-01-31 22:56:03,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:03,422 INFO L225 Difference]: With dead ends: 113 [2022-01-31 22:56:03,423 INFO L226 Difference]: Without dead ends: 106 [2022-01-31 22:56:03,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4277 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=13113, Invalid=21669, Unknown=0, NotChecked=0, Total=34782 [2022-01-31 22:56:03,424 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:03,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 51 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:03,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-01-31 22:56:03,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2022-01-31 22:56:03,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 102 states have (on average 1.0196078431372548) internal successors, (104), 102 states have internal predecessors, (104), 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 22:56:03,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2022-01-31 22:56:03,428 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 103 [2022-01-31 22:56:03,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:03,428 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2022-01-31 22:56:03,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 1.0526315789473684) internal successors, (100), 94 states have internal predecessors, (100), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:03,428 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2022-01-31 22:56:03,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-31 22:56:03,428 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:03,429 INFO L514 BasicCegarLoop]: trace histogram [92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:03,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-01-31 22:56:03,429 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:03,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:03,429 INFO L85 PathProgramCache]: Analyzing trace with hash -516631442, now seen corresponding path program 91 times [2022-01-31 22:56:03,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:03,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889109986] [2022-01-31 22:56:03,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:03,430 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:03,430 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:03,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:03,431 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:06,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:06,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:06,110 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:06,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1889109986] [2022-01-31 22:56:06,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1889109986] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:06,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:06,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [96] imperfect sequences [] total 96 [2022-01-31 22:56:06,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700393194] [2022-01-31 22:56:06,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:06,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-01-31 22:56:06,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:06,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-01-31 22:56:06,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120 [2022-01-31 22:56:06,113 INFO L87 Difference]: Start difference. First operand 106 states and 107 transitions. Second operand has 96 states, 96 states have (on average 1.0520833333333333) internal successors, (101), 95 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 22:56:09,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:09,470 INFO L93 Difference]: Finished difference Result 114 states and 116 transitions. [2022-01-31 22:56:09,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-01-31 22:56:09,470 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.0520833333333333) internal successors, (101), 95 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 22:56:09,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:09,470 INFO L225 Difference]: With dead ends: 114 [2022-01-31 22:56:09,471 INFO L226 Difference]: Without dead ends: 107 [2022-01-31 22:56:09,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4370 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=13395, Invalid=22137, Unknown=0, NotChecked=0, Total=35532 [2022-01-31 22:56:09,472 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:09,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 56 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:09,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-01-31 22:56:09,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2022-01-31 22:56:09,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 103 states have (on average 1.0194174757281553) internal successors, (105), 103 states have internal predecessors, (105), 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 22:56:09,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2022-01-31 22:56:09,476 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 104 [2022-01-31 22:56:09,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:09,476 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2022-01-31 22:56:09,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.0520833333333333) internal successors, (101), 95 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 22:56:09,476 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2022-01-31 22:56:09,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-31 22:56:09,477 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:09,477 INFO L514 BasicCegarLoop]: trace histogram [93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:09,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-01-31 22:56:09,477 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:09,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:09,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1152554477, now seen corresponding path program 92 times [2022-01-31 22:56:09,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:09,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386459445] [2022-01-31 22:56:09,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:09,478 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:09,479 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:09,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:09,479 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:09,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:12,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:12,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:12,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:12,247 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:12,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386459445] [2022-01-31 22:56:12,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [386459445] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:12,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:12,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [97] imperfect sequences [] total 97 [2022-01-31 22:56:12,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757832072] [2022-01-31 22:56:12,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:12,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-01-31 22:56:12,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:12,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-01-31 22:56:12,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2022-01-31 22:56:12,249 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand has 97 states, 97 states have (on average 1.0515463917525774) internal successors, (102), 96 states have internal predecessors, (102), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:15,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:15,678 INFO L93 Difference]: Finished difference Result 115 states and 117 transitions. [2022-01-31 22:56:15,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-01-31 22:56:15,678 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 1.0515463917525774) internal successors, (102), 96 states have internal predecessors, (102), 1 states have call successors, (2), 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 105 [2022-01-31 22:56:15,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:15,679 INFO L225 Difference]: With dead ends: 115 [2022-01-31 22:56:15,679 INFO L226 Difference]: Without dead ends: 108 [2022-01-31 22:56:15,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4464 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=13680, Invalid=22610, Unknown=0, NotChecked=0, Total=36290 [2022-01-31 22:56:15,681 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:15,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 41 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:15,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-01-31 22:56:15,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2022-01-31 22:56:15,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 104 states have (on average 1.0192307692307692) internal successors, (106), 104 states have internal predecessors, (106), 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 22:56:15,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 109 transitions. [2022-01-31 22:56:15,685 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 109 transitions. Word has length 105 [2022-01-31 22:56:15,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:15,685 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 109 transitions. [2022-01-31 22:56:15,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 1.0515463917525774) internal successors, (102), 96 states have internal predecessors, (102), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:15,685 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 109 transitions. [2022-01-31 22:56:15,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-31 22:56:15,686 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:15,686 INFO L514 BasicCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:15,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-01-31 22:56:15,686 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:15,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:15,686 INFO L85 PathProgramCache]: Analyzing trace with hash 608667918, now seen corresponding path program 93 times [2022-01-31 22:56:15,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:15,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581270607] [2022-01-31 22:56:15,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:15,688 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:15,688 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:15,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:15,688 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:15,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:18,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:18,507 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 22:56:18,507 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:18,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581270607] [2022-01-31 22:56:18,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1581270607] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:18,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:18,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [98] imperfect sequences [] total 98 [2022-01-31 22:56:18,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795782536] [2022-01-31 22:56:18,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:18,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-01-31 22:56:18,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:18,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-01-31 22:56:18,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506 [2022-01-31 22:56:18,509 INFO L87 Difference]: Start difference. First operand 108 states and 109 transitions. Second operand has 98 states, 98 states have (on average 1.0510204081632653) internal successors, (103), 97 states have internal predecessors, (103), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:21,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:21,983 INFO L93 Difference]: Finished difference Result 116 states and 118 transitions. [2022-01-31 22:56:21,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-01-31 22:56:21,983 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 1.0510204081632653) internal successors, (103), 97 states have internal predecessors, (103), 1 states have call successors, (2), 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 106 [2022-01-31 22:56:21,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:21,984 INFO L225 Difference]: With dead ends: 116 [2022-01-31 22:56:21,984 INFO L226 Difference]: Without dead ends: 109 [2022-01-31 22:56:21,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4559 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=13968, Invalid=23088, Unknown=0, NotChecked=0, Total=37056 [2022-01-31 22:56:21,986 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:21,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 26 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:21,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-01-31 22:56:21,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2022-01-31 22:56:21,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 105 states have (on average 1.019047619047619) internal successors, (107), 105 states have internal predecessors, (107), 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 22:56:21,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 110 transitions. [2022-01-31 22:56:21,989 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 110 transitions. Word has length 106 [2022-01-31 22:56:21,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:21,989 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 110 transitions. [2022-01-31 22:56:21,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 1.0510204081632653) internal successors, (103), 97 states have internal predecessors, (103), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:21,989 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 110 transitions. [2022-01-31 22:56:21,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-31 22:56:21,990 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:21,990 INFO L514 BasicCegarLoop]: trace histogram [95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:21,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-01-31 22:56:21,990 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:21,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:21,990 INFO L85 PathProgramCache]: Analyzing trace with hash -628012685, now seen corresponding path program 94 times [2022-01-31 22:56:21,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:21,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129901568] [2022-01-31 22:56:21,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:21,991 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:21,991 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:21,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:21,992 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:24,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:24,838 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 22:56:24,839 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:24,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129901568] [2022-01-31 22:56:24,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [129901568] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:24,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:24,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [99] imperfect sequences [] total 99 [2022-01-31 22:56:24,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593190252] [2022-01-31 22:56:24,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:24,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-01-31 22:56:24,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:24,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-01-31 22:56:24,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2022-01-31 22:56:24,841 INFO L87 Difference]: Start difference. First operand 109 states and 110 transitions. Second operand has 99 states, 99 states have (on average 1.0505050505050506) internal successors, (104), 98 states have internal predecessors, (104), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:28,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:28,378 INFO L93 Difference]: Finished difference Result 117 states and 119 transitions. [2022-01-31 22:56:28,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-01-31 22:56:28,379 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 1.0505050505050506) internal successors, (104), 98 states have internal predecessors, (104), 1 states have call successors, (2), 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 107 [2022-01-31 22:56:28,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:28,379 INFO L225 Difference]: With dead ends: 117 [2022-01-31 22:56:28,379 INFO L226 Difference]: Without dead ends: 110 [2022-01-31 22:56:28,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4655 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=14259, Invalid=23571, Unknown=0, NotChecked=0, Total=37830 [2022-01-31 22:56:28,382 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:28,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 31 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:28,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-01-31 22:56:28,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2022-01-31 22:56:28,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 106 states have (on average 1.0188679245283019) internal successors, (108), 106 states have internal predecessors, (108), 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 22:56:28,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 111 transitions. [2022-01-31 22:56:28,386 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 111 transitions. Word has length 107 [2022-01-31 22:56:28,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:28,386 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 111 transitions. [2022-01-31 22:56:28,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 1.0505050505050506) internal successors, (104), 98 states have internal predecessors, (104), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:28,386 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 111 transitions. [2022-01-31 22:56:28,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-31 22:56:28,387 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:28,387 INFO L514 BasicCegarLoop]: trace histogram [96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:28,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-01-31 22:56:28,387 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:28,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:28,387 INFO L85 PathProgramCache]: Analyzing trace with hash -310405714, now seen corresponding path program 95 times [2022-01-31 22:56:28,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:28,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178783547] [2022-01-31 22:56:28,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:28,388 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:28,389 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:28,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:28,389 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:31,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:31,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:31,470 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:31,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178783547] [2022-01-31 22:56:31,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1178783547] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:31,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:31,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [100] imperfect sequences [] total 100 [2022-01-31 22:56:31,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416058471] [2022-01-31 22:56:31,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:31,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2022-01-31 22:56:31,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:31,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2022-01-31 22:56:31,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900 [2022-01-31 22:56:31,472 INFO L87 Difference]: Start difference. First operand 110 states and 111 transitions. Second operand has 100 states, 100 states have (on average 1.05) internal successors, (105), 99 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 22:56:35,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:35,096 INFO L93 Difference]: Finished difference Result 118 states and 120 transitions. [2022-01-31 22:56:35,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-01-31 22:56:35,096 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 1.05) internal successors, (105), 99 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 22:56:35,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:35,097 INFO L225 Difference]: With dead ends: 118 [2022-01-31 22:56:35,097 INFO L226 Difference]: Without dead ends: 111 [2022-01-31 22:56:35,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4752 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=14553, Invalid=24059, Unknown=0, NotChecked=0, Total=38612 [2022-01-31 22:56:35,099 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:35,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 56 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:35,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-01-31 22:56:35,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2022-01-31 22:56:35,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 107 states have (on average 1.0186915887850467) internal successors, (109), 107 states have internal predecessors, (109), 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 22:56:35,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2022-01-31 22:56:35,104 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 108 [2022-01-31 22:56:35,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:35,104 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2022-01-31 22:56:35,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 1.05) internal successors, (105), 99 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 22:56:35,104 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2022-01-31 22:56:35,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-31 22:56:35,104 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:35,105 INFO L514 BasicCegarLoop]: trace histogram [97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:35,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-01-31 22:56:35,105 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:35,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:35,105 INFO L85 PathProgramCache]: Analyzing trace with hash 945475795, now seen corresponding path program 96 times [2022-01-31 22:56:35,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:35,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404725593] [2022-01-31 22:56:35,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:35,106 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:35,106 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:35,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:35,107 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:35,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:38,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:38,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:38,082 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:38,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404725593] [2022-01-31 22:56:38,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1404725593] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:38,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:38,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [101] imperfect sequences [] total 101 [2022-01-31 22:56:38,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220661404] [2022-01-31 22:56:38,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:38,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-01-31 22:56:38,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:38,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-01-31 22:56:38,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4952, Invalid=5148, Unknown=0, NotChecked=0, Total=10100 [2022-01-31 22:56:38,084 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand has 101 states, 101 states have (on average 1.0495049504950495) internal successors, (106), 100 states have internal predecessors, (106), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:41,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:41,745 INFO L93 Difference]: Finished difference Result 119 states and 121 transitions. [2022-01-31 22:56:41,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-01-31 22:56:41,746 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.0495049504950495) internal successors, (106), 100 states have internal predecessors, (106), 1 states have call successors, (2), 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 109 [2022-01-31 22:56:41,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:41,746 INFO L225 Difference]: With dead ends: 119 [2022-01-31 22:56:41,746 INFO L226 Difference]: Without dead ends: 112 [2022-01-31 22:56:41,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4850 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=14850, Invalid=24552, Unknown=0, NotChecked=0, Total=39402 [2022-01-31 22:56:41,748 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:41,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 41 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:41,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-01-31 22:56:41,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2022-01-31 22:56:41,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 108 states have (on average 1.0185185185185186) internal successors, (110), 108 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 22:56:41,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2022-01-31 22:56:41,751 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 109 [2022-01-31 22:56:41,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:41,751 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2022-01-31 22:56:41,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 1.0495049504950495) internal successors, (106), 100 states have internal predecessors, (106), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:41,752 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2022-01-31 22:56:41,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 22:56:41,752 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:41,752 INFO L514 BasicCegarLoop]: trace histogram [98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:41,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-01-31 22:56:41,752 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:41,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:41,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1223096910, now seen corresponding path program 97 times [2022-01-31 22:56:41,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:41,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563174196] [2022-01-31 22:56:41,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:41,753 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:41,753 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:41,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:41,754 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:41,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:44,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:44,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:44,768 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:44,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563174196] [2022-01-31 22:56:44,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1563174196] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:44,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:44,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [102] imperfect sequences [] total 102 [2022-01-31 22:56:44,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445328824] [2022-01-31 22:56:44,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:44,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-01-31 22:56:44,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:44,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-01-31 22:56:44,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302 [2022-01-31 22:56:44,771 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand has 102 states, 102 states have (on average 1.0490196078431373) internal successors, (107), 101 states have internal predecessors, (107), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:48,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:48,506 INFO L93 Difference]: Finished difference Result 120 states and 122 transitions. [2022-01-31 22:56:48,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-01-31 22:56:48,507 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 1.0490196078431373) internal successors, (107), 101 states have internal predecessors, (107), 1 states have call successors, (2), 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 110 [2022-01-31 22:56:48,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:48,507 INFO L225 Difference]: With dead ends: 120 [2022-01-31 22:56:48,507 INFO L226 Difference]: Without dead ends: 113 [2022-01-31 22:56:48,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4949 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=15150, Invalid=25050, Unknown=0, NotChecked=0, Total=40200 [2022-01-31 22:56:48,509 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:48,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 56 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:48,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-01-31 22:56:48,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2022-01-31 22:56:48,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 109 states have (on average 1.018348623853211) internal successors, (111), 109 states have internal predecessors, (111), 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 22:56:48,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2022-01-31 22:56:48,512 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 110 [2022-01-31 22:56:48,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:48,512 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2022-01-31 22:56:48,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 1.0490196078431373) internal successors, (107), 101 states have internal predecessors, (107), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:48,513 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2022-01-31 22:56:48,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 22:56:48,513 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:48,513 INFO L514 BasicCegarLoop]: trace histogram [99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:48,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-01-31 22:56:48,513 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:48,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:48,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1239416883, now seen corresponding path program 98 times [2022-01-31 22:56:48,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:48,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728185002] [2022-01-31 22:56:48,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:48,515 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:48,515 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:48,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:48,515 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:48,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:51,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:51,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:51,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:51,643 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:51,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728185002] [2022-01-31 22:56:51,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [728185002] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:51,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:51,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [] total 103 [2022-01-31 22:56:51,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547266778] [2022-01-31 22:56:51,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:51,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-01-31 22:56:51,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:51,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-01-31 22:56:51,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2022-01-31 22:56:51,645 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand has 103 states, 103 states have (on average 1.0485436893203883) internal successors, (108), 102 states have internal predecessors, (108), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:55,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:55,430 INFO L93 Difference]: Finished difference Result 121 states and 123 transitions. [2022-01-31 22:56:55,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-01-31 22:56:55,430 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 1.0485436893203883) internal successors, (108), 102 states have internal predecessors, (108), 1 states have call successors, (2), 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 111 [2022-01-31 22:56:55,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:55,430 INFO L225 Difference]: With dead ends: 121 [2022-01-31 22:56:55,430 INFO L226 Difference]: Without dead ends: 114 [2022-01-31 22:56:55,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5049 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=15453, Invalid=25553, Unknown=0, NotChecked=0, Total=41006 [2022-01-31 22:56:55,432 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:55,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 41 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:55,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-01-31 22:56:55,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2022-01-31 22:56:55,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 110 states have (on average 1.018181818181818) internal successors, (112), 110 states have internal predecessors, (112), 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 22:56:55,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 115 transitions. [2022-01-31 22:56:55,437 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 115 transitions. Word has length 111 [2022-01-31 22:56:55,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:55,437 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 115 transitions. [2022-01-31 22:56:55,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 1.0485436893203883) internal successors, (108), 102 states have internal predecessors, (108), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:55,437 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 115 transitions. [2022-01-31 22:56:55,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-31 22:56:55,437 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:55,438 INFO L514 BasicCegarLoop]: trace histogram [100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:55,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-01-31 22:56:55,438 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:55,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:55,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1745336046, now seen corresponding path program 99 times [2022-01-31 22:56:55,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:55,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115664901] [2022-01-31 22:56:55,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:55,439 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:55,439 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:55,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:55,440 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 22:56:55,469 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 22:56:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 22:56:55,546 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-01-31 22:56:55,546 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 22:56:55,550 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 22:56:55,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-01-31 22:56:55,556 INFO L732 BasicCegarLoop]: Path program histogram: [99, 2, 1] [2022-01-31 22:56:55,559 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 22:56:55,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 10:56:55 BoogieIcfgContainer [2022-01-31 22:56:55,610 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 22:56:55,610 INFO L158 Benchmark]: Toolchain (without parser) took 258163.59ms. Allocated memory was 195.0MB in the beginning and 299.9MB in the end (delta: 104.9MB). Free memory was 139.9MB in the beginning and 135.9MB in the end (delta: 4.1MB). Peak memory consumption was 110.0MB. Max. memory is 8.0GB. [2022-01-31 22:56:55,610 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 195.0MB. Free memory is still 155.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 22:56:55,613 INFO L158 Benchmark]: CACSL2BoogieTranslator took 215.10ms. Allocated memory was 195.0MB in the beginning and 299.9MB in the end (delta: 104.9MB). Free memory was 139.7MB in the beginning and 271.1MB in the end (delta: -131.4MB). Peak memory consumption was 8.8MB. Max. memory is 8.0GB. [2022-01-31 22:56:55,613 INFO L158 Benchmark]: Boogie Preprocessor took 33.19ms. Allocated memory is still 299.9MB. Free memory was 271.1MB in the beginning and 269.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 22:56:55,613 INFO L158 Benchmark]: RCFGBuilder took 257.21ms. Allocated memory is still 299.9MB. Free memory was 269.5MB in the beginning and 259.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-31 22:56:55,613 INFO L158 Benchmark]: TraceAbstraction took 257650.56ms. Allocated memory is still 299.9MB. Free memory was 258.5MB in the beginning and 135.9MB in the end (delta: 122.7MB). Peak memory consumption was 122.7MB. Max. memory is 8.0GB. [2022-01-31 22:56:55,613 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 195.0MB. Free memory is still 155.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 215.10ms. Allocated memory was 195.0MB in the beginning and 299.9MB in the end (delta: 104.9MB). Free memory was 139.7MB in the beginning and 271.1MB in the end (delta: -131.4MB). Peak memory consumption was 8.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.19ms. Allocated memory is still 299.9MB. Free memory was 271.1MB in the beginning and 269.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 257.21ms. Allocated memory is still 299.9MB. Free memory was 269.5MB in the beginning and 259.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 257650.56ms. Allocated memory is still 299.9MB. Free memory was 258.5MB in the beginning and 135.9MB in the end (delta: 122.7MB). Peak memory consumption was 122.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 41]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 28, overapproximation of someBinaryArithmeticDOUBLEoperation at line 19. Possible FailurePath: [L1] int __return_main; [L9] double main__x0; [L10] double main__x1; [L11] double main__x2; [L12] int main__i; [L13] main__x0 = 5.5 [L14] main__x1 = 5.545454545454546 [L15] main__i = 0 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 [L17] COND FALSE !(main__i < 100) [L27] int main____CPAchecker_TMP_0; [L28] COND FALSE !(main__x0 >= 99.0) [L53] main____CPAchecker_TMP_0 = 0 [L35] int __tmp_1; [L36] __tmp_1 = main____CPAchecker_TMP_0 [L37] int __VERIFIER_assert__cond; [L38] __VERIFIER_assert__cond = __tmp_1 [L39] COND TRUE __VERIFIER_assert__cond == 0 [L41] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 257.5s, OverallIterations: 102, TraceHistogramMax: 100, PathProgramHistogramMax: 99, EmptinessCheckTime: 0.1s, AutomataDifference: 142.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1017 SdHoareTripleChecker+Valid, 7.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1017 mSDsluCounter, 3759 SdHoareTripleChecker+Invalid, 6.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2339 mSDsCounter, 5555 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8680 IncrementalHoareTripleChecker+Invalid, 14235 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5555 mSolverCounterUnsat, 1420 mSDtfsCounter, 8680 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10508 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 10205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171600 ImplicationChecksByTransitivity, 237.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=101, InterpolantAutomatonStates: 5355, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 101 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-01-31 22:56:55,648 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...