/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/loops/compact.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-24 01:12:16,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-24 01:12:16,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-24 01:12:16,560 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-24 01:12:16,590 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-24 01:12:16,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-24 01:12:16,596 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-24 01:12:16,600 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-02-24 01:12:16,611 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-24 01:12:16,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-24 01:12:16,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-24 01:12:16,613 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-24 01:12:16,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-24 01:12:16,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-24 01:12:16,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-24 01:12:16,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-24 01:12:16,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-24 01:12:16,614 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-24 01:12:16,615 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-24 01:12:16,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-24 01:12:16,615 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-24 01:12:16,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-24 01:12:16,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-24 01:12:16,615 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-24 01:12:16,616 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-24 01:12:16,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-24 01:12:16,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 01:12:16,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-24 01:12:16,616 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-24 01:12:16,616 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-24 01:12:16,616 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-02-24 01:12:16,616 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-24 01:12:16,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-24 01:12:16,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-24 01:12:16,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-24 01:12:16,902 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-24 01:12:16,905 INFO L275 PluginConnector]: CDTParser initialized [2022-02-24 01:12:16,906 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/compact.c [2022-02-24 01:12:16,993 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bf28fc00/ee089c3665c4447bb2aedb1707eec62f/FLAG1425eb11e [2022-02-24 01:12:17,408 INFO L306 CDTParser]: Found 1 translation units. [2022-02-24 01:12:17,408 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/compact.c [2022-02-24 01:12:17,418 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bf28fc00/ee089c3665c4447bb2aedb1707eec62f/FLAG1425eb11e [2022-02-24 01:12:17,430 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bf28fc00/ee089c3665c4447bb2aedb1707eec62f [2022-02-24 01:12:17,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-24 01:12:17,434 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-24 01:12:17,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-24 01:12:17,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-24 01:12:17,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-24 01:12:17,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 01:12:17" (1/1) ... [2022-02-24 01:12:17,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a15362f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:12:17, skipping insertion in model container [2022-02-24 01:12:17,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 01:12:17" (1/1) ... [2022-02-24 01:12:17,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-24 01:12:17,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-24 01:12:17,602 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/compact.c[609,622] [2022-02-24 01:12:17,606 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 01:12:17,615 INFO L203 MainTranslator]: Completed pre-run [2022-02-24 01:12:17,652 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/compact.c[609,622] [2022-02-24 01:12:17,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 01:12:17,668 INFO L208 MainTranslator]: Completed translation [2022-02-24 01:12:17,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:12:17 WrapperNode [2022-02-24 01:12:17,669 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-24 01:12:17,670 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-24 01:12:17,670 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-24 01:12:17,670 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-24 01:12:17,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:12:17" (1/1) ... [2022-02-24 01:12:17,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:12:17" (1/1) ... [2022-02-24 01:12:17,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:12:17" (1/1) ... [2022-02-24 01:12:17,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:12:17" (1/1) ... [2022-02-24 01:12:17,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:12:17" (1/1) ... [2022-02-24 01:12:17,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:12:17" (1/1) ... [2022-02-24 01:12:17,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:12:17" (1/1) ... [2022-02-24 01:12:17,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-24 01:12:17,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-24 01:12:17,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-24 01:12:17,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-24 01:12:17,705 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:12:17" (1/1) ... [2022-02-24 01:12:17,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 01:12:17,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-24 01:12:17,733 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) [2022-02-24 01:12:17,759 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 [2022-02-24 01:12:17,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-24 01:12:17,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-24 01:12:17,781 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-24 01:12:17,781 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-24 01:12:17,781 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-24 01:12:17,781 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-24 01:12:17,781 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-24 01:12:17,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-24 01:12:17,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-02-24 01:12:17,782 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-24 01:12:17,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-24 01:12:17,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-24 01:12:17,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-24 01:12:17,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-24 01:12:17,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-24 01:12:17,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-24 01:12:17,875 INFO L234 CfgBuilder]: Building ICFG [2022-02-24 01:12:17,876 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-24 01:12:18,027 INFO L275 CfgBuilder]: Performing block encoding [2022-02-24 01:12:18,032 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-24 01:12:18,032 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-24 01:12:18,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 01:12:18 BoogieIcfgContainer [2022-02-24 01:12:18,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-24 01:12:18,035 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-24 01:12:18,035 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-24 01:12:18,039 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-24 01:12:18,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 01:12:17" (1/3) ... [2022-02-24 01:12:18,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f9428f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 01:12:18, skipping insertion in model container [2022-02-24 01:12:18,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:12:17" (2/3) ... [2022-02-24 01:12:18,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f9428f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 01:12:18, skipping insertion in model container [2022-02-24 01:12:18,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 01:12:18" (3/3) ... [2022-02-24 01:12:18,041 INFO L111 eAbstractionObserver]: Analyzing ICFG compact.c [2022-02-24 01:12:18,046 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-24 01:12:18,046 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-24 01:12:18,115 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-24 01:12:18,121 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 [2022-02-24 01:12:18,121 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-24 01:12:18,155 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 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) [2022-02-24 01:12:18,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-02-24 01:12:18,170 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:18,170 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:18,171 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:18,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:18,175 INFO L85 PathProgramCache]: Analyzing trace with hash 927625408, now seen corresponding path program 1 times [2022-02-24 01:12:18,188 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:18,189 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070344083] [2022-02-24 01:12:18,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:18,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:18,260 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 01:12:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:18,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:12:18,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:18,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:12:18,436 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:12:18,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070344083] [2022-02-24 01:12:18,438 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2070344083] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:12:18,438 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:12:18,438 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-24 01:12:18,440 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51278504] [2022-02-24 01:12:18,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:12:18,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-24 01:12:18,445 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:12:18,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-24 01:12:18,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-24 01:12:18,475 INFO L87 Difference]: Start difference. First operand has 18 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 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 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:12:18,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:12:18,548 INFO L93 Difference]: Finished difference Result 37 states and 48 transitions. [2022-02-24 01:12:18,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-24 01:12:18,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-02-24 01:12:18,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:12:18,561 INFO L225 Difference]: With dead ends: 37 [2022-02-24 01:12:18,561 INFO L226 Difference]: Without dead ends: 21 [2022-02-24 01:12:18,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-24 01:12:18,571 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 10 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:12:18,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 19 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 01:12:18,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-02-24 01:12:18,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 14. [2022-02-24 01:12:18,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:12:18,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-02-24 01:12:18,606 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2022-02-24 01:12:18,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:12:18,606 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-02-24 01:12:18,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:12:18,607 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-02-24 01:12:18,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-02-24 01:12:18,608 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:18,608 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:18,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-24 01:12:18,609 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:18,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:18,610 INFO L85 PathProgramCache]: Analyzing trace with hash 927446352, now seen corresponding path program 1 times [2022-02-24 01:12:18,610 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:18,611 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74940277] [2022-02-24 01:12:18,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:18,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:18,618 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 01:12:18,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:18,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:12:18,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:18,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:12:18,711 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:12:18,712 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74940277] [2022-02-24 01:12:18,712 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [74940277] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:12:18,712 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:12:18,713 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-24 01:12:18,713 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89806047] [2022-02-24 01:12:18,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:12:18,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-24 01:12:18,716 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:12:18,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-24 01:12:18,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-24 01:12:18,718 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:12:18,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:12:18,779 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2022-02-24 01:12:18,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-24 01:12:18,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-02-24 01:12:18,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:12:18,782 INFO L225 Difference]: With dead ends: 25 [2022-02-24 01:12:18,782 INFO L226 Difference]: Without dead ends: 19 [2022-02-24 01:12:18,783 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 [2022-02-24 01:12:18,785 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:12:18,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 18 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 01:12:18,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-02-24 01:12:18,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2022-02-24 01:12:18,794 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) [2022-02-24 01:12:18,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-02-24 01:12:18,795 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 10 [2022-02-24 01:12:18,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:12:18,795 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-02-24 01:12:18,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:12:18,796 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-02-24 01:12:18,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-24 01:12:18,797 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:18,797 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:18,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-24 01:12:18,798 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:18,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:18,799 INFO L85 PathProgramCache]: Analyzing trace with hash 706936613, now seen corresponding path program 1 times [2022-02-24 01:12:18,800 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:18,800 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797069207] [2022-02-24 01:12:18,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:18,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:18,825 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:12:18,832 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:12:18,832 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:12:18,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:18,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:12:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:18,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:12:18,977 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:12:18,977 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797069207] [2022-02-24 01:12:18,977 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1797069207] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:12:18,977 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:12:18,977 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-24 01:12:18,978 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894561266] [2022-02-24 01:12:18,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:12:18,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-24 01:12:18,978 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:12:18,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-24 01:12:18,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-24 01:12:18,979 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 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) [2022-02-24 01:12:19,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:12:19,050 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2022-02-24 01:12:19,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-24 01:12:19,051 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 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 [2022-02-24 01:12:19,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:12:19,052 INFO L225 Difference]: With dead ends: 31 [2022-02-24 01:12:19,052 INFO L226 Difference]: Without dead ends: 24 [2022-02-24 01:12:19,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-02-24 01:12:19,058 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:12:19,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 24 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 01:12:19,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-02-24 01:12:19,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2022-02-24 01:12:19,068 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) [2022-02-24 01:12:19,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2022-02-24 01:12:19,070 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 15 [2022-02-24 01:12:19,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:12:19,070 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2022-02-24 01:12:19,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 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) [2022-02-24 01:12:19,070 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2022-02-24 01:12:19,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-24 01:12:19,071 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:19,071 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:19,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-24 01:12:19,072 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:19,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:19,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1962996172, now seen corresponding path program 2 times [2022-02-24 01:12:19,072 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:19,072 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829812251] [2022-02-24 01:12:19,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:19,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:19,080 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:12:19,080 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:12:19,080 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:12:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:19,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:12:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:19,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:12:19,211 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:12:19,211 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829812251] [2022-02-24 01:12:19,211 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [829812251] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:12:19,211 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:12:19,211 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-24 01:12:19,211 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194936172] [2022-02-24 01:12:19,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:12:19,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-24 01:12:19,213 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:12:19,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-24 01:12:19,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-24 01:12:19,214 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 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) [2022-02-24 01:12:19,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:12:19,310 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-02-24 01:12:19,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-24 01:12:19,310 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have 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 [2022-02-24 01:12:19,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:12:19,311 INFO L225 Difference]: With dead ends: 39 [2022-02-24 01:12:19,311 INFO L226 Difference]: Without dead ends: 29 [2022-02-24 01:12:19,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-02-24 01:12:19,319 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:12:19,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 31 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:12:19,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-02-24 01:12:19,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2022-02-24 01:12:19,326 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) [2022-02-24 01:12:19,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2022-02-24 01:12:19,327 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 20 [2022-02-24 01:12:19,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:12:19,327 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2022-02-24 01:12:19,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:12:19,327 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2022-02-24 01:12:19,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-24 01:12:19,328 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:19,328 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:19,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-24 01:12:19,328 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:19,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:19,329 INFO L85 PathProgramCache]: Analyzing trace with hash -436810175, now seen corresponding path program 3 times [2022-02-24 01:12:19,329 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:19,329 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163972290] [2022-02-24 01:12:19,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:19,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:19,333 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:12:19,333 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:12:19,333 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:12:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:19,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:12:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:19,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:12:19,458 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:12:19,458 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163972290] [2022-02-24 01:12:19,458 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [163972290] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:12:19,458 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:12:19,458 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-24 01:12:19,458 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839046767] [2022-02-24 01:12:19,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:12:19,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-24 01:12:19,459 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:12:19,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-24 01:12:19,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-02-24 01:12:19,460 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 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) [2022-02-24 01:12:19,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:12:19,550 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2022-02-24 01:12:19,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-24 01:12:19,551 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 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 25 [2022-02-24 01:12:19,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:12:19,552 INFO L225 Difference]: With dead ends: 47 [2022-02-24 01:12:19,552 INFO L226 Difference]: Without dead ends: 34 [2022-02-24 01:12:19,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-02-24 01:12:19,555 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 14 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:12:19,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 36 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:12:19,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-02-24 01:12:19,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2022-02-24 01:12:19,562 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) [2022-02-24 01:12:19,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2022-02-24 01:12:19,563 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 25 [2022-02-24 01:12:19,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:12:19,563 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2022-02-24 01:12:19,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 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) [2022-02-24 01:12:19,563 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2022-02-24 01:12:19,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-24 01:12:19,564 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:19,564 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:19,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-24 01:12:19,565 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:19,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:19,565 INFO L85 PathProgramCache]: Analyzing trace with hash 329033496, now seen corresponding path program 4 times [2022-02-24 01:12:19,565 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:19,565 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387484039] [2022-02-24 01:12:19,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:19,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:19,569 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:12:19,569 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:12:19,569 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:12:19,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:19,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:12:19,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:19,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:12:19,677 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:12:19,677 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [387484039] [2022-02-24 01:12:19,677 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [387484039] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:12:19,677 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:12:19,677 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-24 01:12:19,677 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132557614] [2022-02-24 01:12:19,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:12:19,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-24 01:12:19,678 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:12:19,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-24 01:12:19,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-24 01:12:19,679 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 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) [2022-02-24 01:12:19,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:12:19,782 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2022-02-24 01:12:19,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-24 01:12:19,783 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 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 30 [2022-02-24 01:12:19,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:12:19,785 INFO L225 Difference]: With dead ends: 55 [2022-02-24 01:12:19,786 INFO L226 Difference]: Without dead ends: 39 [2022-02-24 01:12:19,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-02-24 01:12:19,787 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 19 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:12:19,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 43 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:12:19,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-02-24 01:12:19,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2022-02-24 01:12:19,799 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) [2022-02-24 01:12:19,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2022-02-24 01:12:19,801 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 30 [2022-02-24 01:12:19,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:12:19,801 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2022-02-24 01:12:19,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 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) [2022-02-24 01:12:19,801 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2022-02-24 01:12:19,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-24 01:12:19,802 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:19,802 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:19,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-24 01:12:19,803 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:19,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:19,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1926970717, now seen corresponding path program 5 times [2022-02-24 01:12:19,803 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:19,804 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905952578] [2022-02-24 01:12:19,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:19,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:19,808 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:12:19,808 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:12:19,808 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:12:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:19,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:12:19,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:19,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:12:19,986 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:12:19,987 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905952578] [2022-02-24 01:12:19,987 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [905952578] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:12:19,987 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:12:19,987 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-24 01:12:19,987 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991524469] [2022-02-24 01:12:19,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:12:19,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-24 01:12:19,988 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:12:19,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-24 01:12:19,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-24 01:12:19,989 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 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) [2022-02-24 01:12:20,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:12:20,117 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2022-02-24 01:12:20,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-24 01:12:20,119 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 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 35 [2022-02-24 01:12:20,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:12:20,121 INFO L225 Difference]: With dead ends: 63 [2022-02-24 01:12:20,121 INFO L226 Difference]: Without dead ends: 44 [2022-02-24 01:12:20,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-02-24 01:12:20,122 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 28 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:12:20,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 42 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:12:20,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-02-24 01:12:20,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2022-02-24 01:12:20,134 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) [2022-02-24 01:12:20,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2022-02-24 01:12:20,136 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 35 [2022-02-24 01:12:20,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:12:20,136 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2022-02-24 01:12:20,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 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) [2022-02-24 01:12:20,136 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2022-02-24 01:12:20,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-02-24 01:12:20,138 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:20,138 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:20,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-24 01:12:20,139 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:20,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:20,139 INFO L85 PathProgramCache]: Analyzing trace with hash 261275644, now seen corresponding path program 6 times [2022-02-24 01:12:20,139 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:20,139 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042378759] [2022-02-24 01:12:20,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:20,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:20,147 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:12:20,147 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:12:20,147 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:12:20,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:20,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:12:20,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:20,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:12:20,370 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:12:20,370 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042378759] [2022-02-24 01:12:20,371 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1042378759] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:12:20,371 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:12:20,371 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-24 01:12:20,371 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902197112] [2022-02-24 01:12:20,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:12:20,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-24 01:12:20,371 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:12:20,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-24 01:12:20,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-02-24 01:12:20,372 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 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) [2022-02-24 01:12:20,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:12:20,535 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2022-02-24 01:12:20,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-24 01:12:20,535 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 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 40 [2022-02-24 01:12:20,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:12:20,536 INFO L225 Difference]: With dead ends: 71 [2022-02-24 01:12:20,536 INFO L226 Difference]: Without dead ends: 49 [2022-02-24 01:12:20,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-02-24 01:12:20,537 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 29 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:12:20,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 63 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:12:20,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-02-24 01:12:20,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2022-02-24 01:12:20,543 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) [2022-02-24 01:12:20,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2022-02-24 01:12:20,544 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 40 [2022-02-24 01:12:20,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:12:20,544 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2022-02-24 01:12:20,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 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) [2022-02-24 01:12:20,545 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2022-02-24 01:12:20,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-24 01:12:20,545 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:20,545 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:20,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-24 01:12:20,546 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:20,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:20,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1323430791, now seen corresponding path program 7 times [2022-02-24 01:12:20,546 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:20,546 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214778726] [2022-02-24 01:12:20,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:20,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:20,550 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:12:20,550 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:12:20,550 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:12:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:20,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:12:20,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:20,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:12:20,699 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:12:20,700 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214778726] [2022-02-24 01:12:20,700 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1214778726] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:12:20,700 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:12:20,700 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-24 01:12:20,700 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849961301] [2022-02-24 01:12:20,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:12:20,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-24 01:12:20,700 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:12:20,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-24 01:12:20,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-02-24 01:12:20,701 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 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) [2022-02-24 01:12:20,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:12:20,881 INFO L93 Difference]: Finished difference Result 79 states and 82 transitions. [2022-02-24 01:12:20,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-24 01:12:20,881 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 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 45 [2022-02-24 01:12:20,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:12:20,882 INFO L225 Difference]: With dead ends: 79 [2022-02-24 01:12:20,882 INFO L226 Difference]: Without dead ends: 54 [2022-02-24 01:12:20,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-02-24 01:12:20,883 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 26 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:12:20,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 96 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:12:20,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-02-24 01:12:20,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2022-02-24 01:12:20,890 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) [2022-02-24 01:12:20,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2022-02-24 01:12:20,892 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 45 [2022-02-24 01:12:20,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:12:20,892 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2022-02-24 01:12:20,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 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) [2022-02-24 01:12:20,892 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2022-02-24 01:12:20,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-02-24 01:12:20,893 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:20,893 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:20,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-24 01:12:20,893 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:20,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:20,894 INFO L85 PathProgramCache]: Analyzing trace with hash 416520416, now seen corresponding path program 8 times [2022-02-24 01:12:20,894 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:20,894 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364981712] [2022-02-24 01:12:20,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:20,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:20,897 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:12:20,897 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:12:20,897 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:12:20,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:21,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:12:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:21,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:12:21,103 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:12:21,103 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364981712] [2022-02-24 01:12:21,103 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1364981712] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:12:21,103 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:12:21,103 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-24 01:12:21,103 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556891698] [2022-02-24 01:12:21,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:12:21,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-24 01:12:21,105 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:12:21,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-24 01:12:21,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-02-24 01:12:21,105 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 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) [2022-02-24 01:12:21,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:12:21,324 INFO L93 Difference]: Finished difference Result 87 states and 90 transitions. [2022-02-24 01:12:21,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-24 01:12:21,325 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 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 50 [2022-02-24 01:12:21,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:12:21,325 INFO L225 Difference]: With dead ends: 87 [2022-02-24 01:12:21,325 INFO L226 Difference]: Without dead ends: 59 [2022-02-24 01:12:21,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-02-24 01:12:21,327 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 27 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 01:12:21,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 121 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 01:12:21,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-02-24 01:12:21,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2022-02-24 01:12:21,336 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) [2022-02-24 01:12:21,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2022-02-24 01:12:21,340 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 50 [2022-02-24 01:12:21,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:12:21,342 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2022-02-24 01:12:21,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 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) [2022-02-24 01:12:21,342 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2022-02-24 01:12:21,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-24 01:12:21,343 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:21,343 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:21,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-24 01:12:21,344 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:21,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:21,344 INFO L85 PathProgramCache]: Analyzing trace with hash -208864363, now seen corresponding path program 9 times [2022-02-24 01:12:21,344 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:21,344 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932178255] [2022-02-24 01:12:21,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:21,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:21,349 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:12:21,349 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:12:21,349 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:12:21,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:21,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:12:21,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:21,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:12:21,544 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:12:21,544 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932178255] [2022-02-24 01:12:21,545 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [932178255] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:12:21,545 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:12:21,545 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 01:12:21,545 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825497825] [2022-02-24 01:12:21,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:12:21,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 01:12:21,545 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:12:21,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 01:12:21,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-02-24 01:12:21,546 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 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) [2022-02-24 01:12:21,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:12:21,768 INFO L93 Difference]: Finished difference Result 95 states and 98 transitions. [2022-02-24 01:12:21,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-24 01:12:21,768 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 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 55 [2022-02-24 01:12:21,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:12:21,769 INFO L225 Difference]: With dead ends: 95 [2022-02-24 01:12:21,769 INFO L226 Difference]: Without dead ends: 64 [2022-02-24 01:12:21,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-02-24 01:12:21,770 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 40 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 01:12:21,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 118 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 01:12:21,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-02-24 01:12:21,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2022-02-24 01:12:21,777 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) [2022-02-24 01:12:21,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2022-02-24 01:12:21,777 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 55 [2022-02-24 01:12:21,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:12:21,778 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2022-02-24 01:12:21,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 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) [2022-02-24 01:12:21,778 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2022-02-24 01:12:21,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-24 01:12:21,779 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:21,779 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:21,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-24 01:12:21,779 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:21,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:21,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1999539772, now seen corresponding path program 10 times [2022-02-24 01:12:21,780 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:21,780 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687062226] [2022-02-24 01:12:21,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:21,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:21,783 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:12:21,783 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:12:21,783 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:12:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:21,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:12:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:21,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:12:21,996 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:12:21,996 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687062226] [2022-02-24 01:12:21,996 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1687062226] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:12:21,996 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:12:21,996 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-24 01:12:21,996 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660416035] [2022-02-24 01:12:21,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:12:21,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-24 01:12:21,997 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:12:21,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-24 01:12:21,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-02-24 01:12:21,998 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 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) [2022-02-24 01:12:22,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:12:22,269 INFO L93 Difference]: Finished difference Result 103 states and 106 transitions. [2022-02-24 01:12:22,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-24 01:12:22,269 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 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 60 [2022-02-24 01:12:22,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:12:22,270 INFO L225 Difference]: With dead ends: 103 [2022-02-24 01:12:22,270 INFO L226 Difference]: Without dead ends: 69 [2022-02-24 01:12:22,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-02-24 01:12:22,271 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 43 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 01:12:22,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 142 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 01:12:22,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-02-24 01:12:22,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 66. [2022-02-24 01:12:22,278 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) [2022-02-24 01:12:22,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2022-02-24 01:12:22,279 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 60 [2022-02-24 01:12:22,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:12:22,279 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2022-02-24 01:12:22,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 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) [2022-02-24 01:12:22,280 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2022-02-24 01:12:22,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-24 01:12:22,280 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:22,280 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:22,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-24 01:12:22,281 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:22,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:22,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1686779215, now seen corresponding path program 11 times [2022-02-24 01:12:22,281 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:22,281 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752482778] [2022-02-24 01:12:22,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:22,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:22,285 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:12:22,285 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:12:22,285 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:12:22,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:22,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:12:22,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:22,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:12:22,489 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:12:22,490 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752482778] [2022-02-24 01:12:22,490 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [752482778] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:12:22,490 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:12:22,490 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-24 01:12:22,490 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326244462] [2022-02-24 01:12:22,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:12:22,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-24 01:12:22,490 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:12:22,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-24 01:12:22,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-02-24 01:12:22,491 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 14 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) [2022-02-24 01:12:22,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:12:22,815 INFO L93 Difference]: Finished difference Result 111 states and 114 transitions. [2022-02-24 01:12:22,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-24 01:12:22,816 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 14 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 65 [2022-02-24 01:12:22,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:12:22,818 INFO L225 Difference]: With dead ends: 111 [2022-02-24 01:12:22,818 INFO L226 Difference]: Without dead ends: 74 [2022-02-24 01:12:22,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-02-24 01:12:22,819 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 44 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-24 01:12:22,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 173 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-24 01:12:22,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-02-24 01:12:22,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2022-02-24 01:12:22,827 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) [2022-02-24 01:12:22,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2022-02-24 01:12:22,827 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 65 [2022-02-24 01:12:22,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:12:22,828 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2022-02-24 01:12:22,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 14 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) [2022-02-24 01:12:22,828 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2022-02-24 01:12:22,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-24 01:12:22,829 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:22,829 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:22,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-24 01:12:22,829 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:22,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:22,830 INFO L85 PathProgramCache]: Analyzing trace with hash -595686744, now seen corresponding path program 12 times [2022-02-24 01:12:22,830 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:22,830 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632519424] [2022-02-24 01:12:22,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:22,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:22,833 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:12:22,833 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:12:22,833 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:12:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:23,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:12:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:23,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:12:23,069 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:12:23,069 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632519424] [2022-02-24 01:12:23,069 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1632519424] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:12:23,069 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:12:23,069 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-24 01:12:23,069 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373016805] [2022-02-24 01:12:23,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:12:23,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-24 01:12:23,070 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:12:23,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-24 01:12:23,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-02-24 01:12:23,070 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 16 states, 16 states have (on average 2.125) internal successors, (34), 15 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) [2022-02-24 01:12:23,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:12:23,402 INFO L93 Difference]: Finished difference Result 119 states and 122 transitions. [2022-02-24 01:12:23,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-24 01:12:23,402 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 15 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 70 [2022-02-24 01:12:23,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:12:23,403 INFO L225 Difference]: With dead ends: 119 [2022-02-24 01:12:23,403 INFO L226 Difference]: Without dead ends: 79 [2022-02-24 01:12:23,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-02-24 01:12:23,404 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 55 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-24 01:12:23,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 181 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-24 01:12:23,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-02-24 01:12:23,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2022-02-24 01:12:23,411 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) [2022-02-24 01:12:23,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2022-02-24 01:12:23,411 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 70 [2022-02-24 01:12:23,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:12:23,412 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2022-02-24 01:12:23,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 15 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) [2022-02-24 01:12:23,412 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2022-02-24 01:12:23,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-24 01:12:23,413 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:23,413 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:23,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-24 01:12:23,413 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:23,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:23,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1264174643, now seen corresponding path program 13 times [2022-02-24 01:12:23,413 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:23,414 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801246000] [2022-02-24 01:12:23,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:23,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:23,417 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:12:23,417 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:12:23,417 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:12:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:23,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:12:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:23,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:12:23,663 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:12:23,663 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801246000] [2022-02-24 01:12:23,663 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1801246000] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:12:23,663 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:12:23,663 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-24 01:12:23,663 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022207350] [2022-02-24 01:12:23,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:12:23,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-24 01:12:23,663 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:12:23,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-24 01:12:23,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-02-24 01:12:23,664 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 16 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) [2022-02-24 01:12:24,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:12:24,062 INFO L93 Difference]: Finished difference Result 127 states and 130 transitions. [2022-02-24 01:12:24,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-24 01:12:24,063 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 16 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 75 [2022-02-24 01:12:24,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:12:24,064 INFO L225 Difference]: With dead ends: 127 [2022-02-24 01:12:24,064 INFO L226 Difference]: Without dead ends: 84 [2022-02-24 01:12:24,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-02-24 01:12:24,065 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 62 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-24 01:12:24,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 201 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-24 01:12:24,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-02-24 01:12:24,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2022-02-24 01:12:24,072 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) [2022-02-24 01:12:24,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2022-02-24 01:12:24,072 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 75 [2022-02-24 01:12:24,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:12:24,073 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2022-02-24 01:12:24,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 16 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) [2022-02-24 01:12:24,073 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2022-02-24 01:12:24,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-02-24 01:12:24,074 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:24,074 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:24,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-24 01:12:24,074 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:24,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:24,074 INFO L85 PathProgramCache]: Analyzing trace with hash 407708556, now seen corresponding path program 14 times [2022-02-24 01:12:24,074 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:24,075 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547467397] [2022-02-24 01:12:24,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:24,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:24,078 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:12:24,078 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:12:24,078 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:12:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:24,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:12:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:24,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:12:24,343 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:12:24,343 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547467397] [2022-02-24 01:12:24,343 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [547467397] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:12:24,343 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:12:24,343 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-02-24 01:12:24,343 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120581016] [2022-02-24 01:12:24,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:12:24,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-24 01:12:24,344 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:12:24,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-24 01:12:24,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-02-24 01:12:24,345 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 17 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) [2022-02-24 01:12:24,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:12:24,786 INFO L93 Difference]: Finished difference Result 135 states and 138 transitions. [2022-02-24 01:12:24,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-24 01:12:24,787 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 17 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 80 [2022-02-24 01:12:24,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:12:24,787 INFO L225 Difference]: With dead ends: 135 [2022-02-24 01:12:24,787 INFO L226 Difference]: Without dead ends: 89 [2022-02-24 01:12:24,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-02-24 01:12:24,788 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 67 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-24 01:12:24,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 228 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-24 01:12:24,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-02-24 01:12:24,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86. [2022-02-24 01:12:24,794 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) [2022-02-24 01:12:24,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2022-02-24 01:12:24,795 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 80 [2022-02-24 01:12:24,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:12:24,800 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2022-02-24 01:12:24,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 17 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) [2022-02-24 01:12:24,800 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2022-02-24 01:12:24,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-24 01:12:24,801 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:24,801 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:24,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-24 01:12:24,801 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:24,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:24,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1855190807, now seen corresponding path program 15 times [2022-02-24 01:12:24,802 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:24,802 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919169439] [2022-02-24 01:12:24,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:24,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:24,806 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:12:24,806 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:12:24,806 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:12:24,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:25,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:12:25,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:25,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:12:25,110 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:12:25,111 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919169439] [2022-02-24 01:12:25,111 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1919169439] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:12:25,111 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:12:25,111 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-24 01:12:25,111 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926375492] [2022-02-24 01:12:25,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:12:25,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-24 01:12:25,111 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:12:25,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-24 01:12:25,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-02-24 01:12:25,112 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 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) [2022-02-24 01:12:25,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:12:25,586 INFO L93 Difference]: Finished difference Result 143 states and 146 transitions. [2022-02-24 01:12:25,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-24 01:12:25,587 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 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 85 [2022-02-24 01:12:25,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:12:25,588 INFO L225 Difference]: With dead ends: 143 [2022-02-24 01:12:25,588 INFO L226 Difference]: Without dead ends: 94 [2022-02-24 01:12:25,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2022-02-24 01:12:25,589 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 60 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-24 01:12:25,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 287 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-24 01:12:25,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-02-24 01:12:25,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 91. [2022-02-24 01:12:25,594 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) [2022-02-24 01:12:25,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2022-02-24 01:12:25,595 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 85 [2022-02-24 01:12:25,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:12:25,595 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2022-02-24 01:12:25,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 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) [2022-02-24 01:12:25,595 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2022-02-24 01:12:25,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-02-24 01:12:25,596 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:25,596 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:25,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-24 01:12:25,596 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:25,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:25,596 INFO L85 PathProgramCache]: Analyzing trace with hash 741309552, now seen corresponding path program 16 times [2022-02-24 01:12:25,596 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:25,596 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430667767] [2022-02-24 01:12:25,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:25,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:25,600 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:12:25,600 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:12:25,600 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:12:25,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:25,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:12:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:25,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:12:25,897 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:12:25,898 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430667767] [2022-02-24 01:12:25,898 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1430667767] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:12:25,898 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:12:25,898 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-24 01:12:25,898 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877471169] [2022-02-24 01:12:25,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:12:25,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-24 01:12:25,898 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:12:25,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-24 01:12:25,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-02-24 01:12:25,899 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand has 20 states, 20 states have (on average 2.1) internal successors, (42), 19 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) [2022-02-24 01:12:26,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:12:26,401 INFO L93 Difference]: Finished difference Result 151 states and 154 transitions. [2022-02-24 01:12:26,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-24 01:12:26,402 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 19 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 90 [2022-02-24 01:12:26,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:12:26,402 INFO L225 Difference]: With dead ends: 151 [2022-02-24 01:12:26,403 INFO L226 Difference]: Without dead ends: 99 [2022-02-24 01:12:26,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2022-02-24 01:12:26,403 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 83 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-24 01:12:26,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 273 Invalid, 1201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-24 01:12:26,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-02-24 01:12:26,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 96. [2022-02-24 01:12:26,409 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) [2022-02-24 01:12:26,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2022-02-24 01:12:26,410 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 90 [2022-02-24 01:12:26,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:12:26,410 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2022-02-24 01:12:26,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 19 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) [2022-02-24 01:12:26,410 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2022-02-24 01:12:26,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-02-24 01:12:26,411 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:26,411 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:26,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-24 01:12:26,411 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:26,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:26,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1721038853, now seen corresponding path program 17 times [2022-02-24 01:12:26,411 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:26,412 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745164322] [2022-02-24 01:12:26,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:26,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:26,415 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:12:26,415 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:12:26,415 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:12:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:26,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:12:26,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:26,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:12:26,770 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:12:26,770 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745164322] [2022-02-24 01:12:26,770 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [745164322] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:12:26,770 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:12:26,771 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-24 01:12:26,771 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195883185] [2022-02-24 01:12:26,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:12:26,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-24 01:12:26,771 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:12:26,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-24 01:12:26,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2022-02-24 01:12:26,772 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 20 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) [2022-02-24 01:12:27,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:12:27,310 INFO L93 Difference]: Finished difference Result 159 states and 162 transitions. [2022-02-24 01:12:27,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-24 01:12:27,311 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 20 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 95 [2022-02-24 01:12:27,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:12:27,312 INFO L225 Difference]: With dead ends: 159 [2022-02-24 01:12:27,312 INFO L226 Difference]: Without dead ends: 104 [2022-02-24 01:12:27,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2022-02-24 01:12:27,313 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 78 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 1303 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-24 01:12:27,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 331 Invalid, 1353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1303 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-24 01:12:27,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-02-24 01:12:27,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2022-02-24 01:12:27,319 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) [2022-02-24 01:12:27,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2022-02-24 01:12:27,320 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 95 [2022-02-24 01:12:27,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:12:27,320 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2022-02-24 01:12:27,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 20 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) [2022-02-24 01:12:27,320 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2022-02-24 01:12:27,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-02-24 01:12:27,321 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:27,321 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:27,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-24 01:12:27,321 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:27,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:27,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1469568340, now seen corresponding path program 18 times [2022-02-24 01:12:27,322 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:27,322 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441809494] [2022-02-24 01:12:27,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:27,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:27,325 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:12:27,325 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:12:27,325 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:12:27,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:27,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:12:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:27,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:12:27,711 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:12:27,711 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441809494] [2022-02-24 01:12:27,711 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [441809494] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:12:27,711 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:12:27,711 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-24 01:12:27,711 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443155347] [2022-02-24 01:12:27,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:12:27,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-24 01:12:27,712 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:12:27,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-24 01:12:27,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2022-02-24 01:12:27,713 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 21 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) [2022-02-24 01:12:28,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:12:28,303 INFO L93 Difference]: Finished difference Result 167 states and 170 transitions. [2022-02-24 01:12:28,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-24 01:12:28,303 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 21 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 100 [2022-02-24 01:12:28,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:12:28,304 INFO L225 Difference]: With dead ends: 167 [2022-02-24 01:12:28,304 INFO L226 Difference]: Without dead ends: 109 [2022-02-24 01:12:28,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2022-02-24 01:12:28,305 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 87 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 1444 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 1499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-24 01:12:28,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 356 Invalid, 1499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1444 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-24 01:12:28,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-02-24 01:12:28,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2022-02-24 01:12:28,311 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) [2022-02-24 01:12:28,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2022-02-24 01:12:28,312 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 100 [2022-02-24 01:12:28,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:12:28,312 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2022-02-24 01:12:28,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 21 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) [2022-02-24 01:12:28,313 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2022-02-24 01:12:28,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-02-24 01:12:28,314 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:28,314 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:28,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-24 01:12:28,314 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:28,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:28,315 INFO L85 PathProgramCache]: Analyzing trace with hash -412170463, now seen corresponding path program 19 times [2022-02-24 01:12:28,315 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:28,315 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002409442] [2022-02-24 01:12:28,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:28,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:28,321 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:12:28,321 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:12:28,321 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:12:28,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:28,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:12:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:28,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:12:28,698 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:12:28,698 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002409442] [2022-02-24 01:12:28,698 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2002409442] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:12:28,698 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:12:28,698 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-02-24 01:12:28,698 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29206042] [2022-02-24 01:12:28,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:12:28,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-24 01:12:28,698 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:12:28,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-24 01:12:28,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2022-02-24 01:12:28,699 INFO L87 Difference]: Start difference. First operand 106 states and 107 transitions. Second operand has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 22 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) [2022-02-24 01:12:29,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:12:29,404 INFO L93 Difference]: Finished difference Result 175 states and 178 transitions. [2022-02-24 01:12:29,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-24 01:12:29,404 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 22 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 105 [2022-02-24 01:12:29,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:12:29,405 INFO L225 Difference]: With dead ends: 175 [2022-02-24 01:12:29,405 INFO L226 Difference]: Without dead ends: 114 [2022-02-24 01:12:29,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2022-02-24 01:12:29,406 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 68 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 1635 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 1681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-24 01:12:29,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 453 Invalid, 1681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1635 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-24 01:12:29,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-02-24 01:12:29,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 111. [2022-02-24 01:12:29,412 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) [2022-02-24 01:12:29,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2022-02-24 01:12:29,413 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 105 [2022-02-24 01:12:29,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:12:29,413 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2022-02-24 01:12:29,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 22 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) [2022-02-24 01:12:29,413 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2022-02-24 01:12:29,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-02-24 01:12:29,414 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:29,414 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:29,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-24 01:12:29,415 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:29,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:29,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1921487304, now seen corresponding path program 20 times [2022-02-24 01:12:29,415 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:29,415 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286896259] [2022-02-24 01:12:29,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:29,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:29,418 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:12:29,419 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:12:29,419 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:12:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:29,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:12:29,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:29,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:12:29,833 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:12:29,833 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286896259] [2022-02-24 01:12:29,833 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1286896259] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:12:29,833 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:12:29,833 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-02-24 01:12:29,833 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979768885] [2022-02-24 01:12:29,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:12:29,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-24 01:12:29,834 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:12:29,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-24 01:12:29,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2022-02-24 01:12:29,835 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand has 24 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 23 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) [2022-02-24 01:12:30,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:12:30,537 INFO L93 Difference]: Finished difference Result 183 states and 186 transitions. [2022-02-24 01:12:30,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-24 01:12:30,540 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 23 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 110 [2022-02-24 01:12:30,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:12:30,541 INFO L225 Difference]: With dead ends: 183 [2022-02-24 01:12:30,541 INFO L226 Difference]: Without dead ends: 119 [2022-02-24 01:12:30,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2022-02-24 01:12:30,542 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 67 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 1807 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 1853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-24 01:12:30,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 507 Invalid, 1853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1807 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-24 01:12:30,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-02-24 01:12:30,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 116. [2022-02-24 01:12:30,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 112 states have (on average 1.0178571428571428) internal successors, (114), 112 states have internal predecessors, (114), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:12:30,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 117 transitions. [2022-02-24 01:12:30,549 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 117 transitions. Word has length 110 [2022-02-24 01:12:30,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:12:30,549 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 117 transitions. [2022-02-24 01:12:30,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 23 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) [2022-02-24 01:12:30,550 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 117 transitions. [2022-02-24 01:12:30,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-02-24 01:12:30,550 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:30,551 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:30,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-24 01:12:30,551 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:30,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:30,551 INFO L85 PathProgramCache]: Analyzing trace with hash -507038147, now seen corresponding path program 21 times [2022-02-24 01:12:30,551 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:30,551 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988568091] [2022-02-24 01:12:30,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:30,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:30,555 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:12:30,555 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:12:30,555 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:12:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:30,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:12:30,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:30,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:12:30,968 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:12:30,968 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988568091] [2022-02-24 01:12:30,969 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1988568091] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:12:30,969 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:12:30,969 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-02-24 01:12:30,969 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732524362] [2022-02-24 01:12:30,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:12:30,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-24 01:12:30,969 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:12:30,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-24 01:12:30,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2022-02-24 01:12:30,970 INFO L87 Difference]: Start difference. First operand 116 states and 117 transitions. Second operand has 25 states, 25 states have (on average 2.08) internal successors, (52), 24 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) [2022-02-24 01:12:31,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:12:31,747 INFO L93 Difference]: Finished difference Result 191 states and 194 transitions. [2022-02-24 01:12:31,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-24 01:12:31,747 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.08) internal successors, (52), 24 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 115 [2022-02-24 01:12:31,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:12:31,748 INFO L225 Difference]: With dead ends: 191 [2022-02-24 01:12:31,748 INFO L226 Difference]: Without dead ends: 124 [2022-02-24 01:12:31,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=577, Unknown=0, NotChecked=0, Total=650 [2022-02-24 01:12:31,749 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 104 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 1930 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 1995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-24 01:12:31,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 468 Invalid, 1995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1930 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-24 01:12:31,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-02-24 01:12:31,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 121. [2022-02-24 01:12:31,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 117 states have (on average 1.017094017094017) internal successors, (119), 117 states have internal predecessors, (119), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:12:31,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2022-02-24 01:12:31,757 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 115 [2022-02-24 01:12:31,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:12:31,757 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2022-02-24 01:12:31,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.08) internal successors, (52), 24 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) [2022-02-24 01:12:31,757 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2022-02-24 01:12:31,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-02-24 01:12:31,758 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:31,758 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:31,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-24 01:12:31,759 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:31,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:31,759 INFO L85 PathProgramCache]: Analyzing trace with hash -666663140, now seen corresponding path program 22 times [2022-02-24 01:12:31,759 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:31,759 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025522110] [2022-02-24 01:12:31,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:31,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:31,763 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:12:31,763 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:12:31,763 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:12:31,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:32,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:12:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:32,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:12:32,208 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:12:32,208 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025522110] [2022-02-24 01:12:32,208 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1025522110] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:12:32,209 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:12:32,209 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-02-24 01:12:32,209 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484322835] [2022-02-24 01:12:32,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:12:32,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-24 01:12:32,210 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:12:32,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-24 01:12:32,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2022-02-24 01:12:32,211 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand has 26 states, 26 states have (on average 2.076923076923077) internal successors, (54), 25 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) [2022-02-24 01:12:32,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:12:32,998 INFO L93 Difference]: Finished difference Result 199 states and 202 transitions. [2022-02-24 01:12:32,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-24 01:12:32,998 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.076923076923077) internal successors, (54), 25 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 120 [2022-02-24 01:12:32,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:12:32,999 INFO L225 Difference]: With dead ends: 199 [2022-02-24 01:12:32,999 INFO L226 Difference]: Without dead ends: 129 [2022-02-24 01:12:32,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2022-02-24 01:12:33,000 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 83 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 2148 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 2203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-24 01:12:33,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 576 Invalid, 2203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2148 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-24 01:12:33,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-02-24 01:12:33,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 126. [2022-02-24 01:12:33,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 122 states have (on average 1.0163934426229508) internal successors, (124), 122 states have internal predecessors, (124), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:12:33,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 127 transitions. [2022-02-24 01:12:33,007 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 127 transitions. Word has length 120 [2022-02-24 01:12:33,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:12:33,008 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 127 transitions. [2022-02-24 01:12:33,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.076923076923077) internal successors, (54), 25 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) [2022-02-24 01:12:33,008 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 127 transitions. [2022-02-24 01:12:33,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-02-24 01:12:33,009 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:33,009 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:33,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-02-24 01:12:33,009 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:33,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:33,010 INFO L85 PathProgramCache]: Analyzing trace with hash -638843559, now seen corresponding path program 23 times [2022-02-24 01:12:33,010 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:33,010 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730023034] [2022-02-24 01:12:33,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:33,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:33,013 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:12:33,013 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:12:33,013 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:12:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:33,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:12:33,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:33,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:12:33,503 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:12:33,503 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730023034] [2022-02-24 01:12:33,503 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1730023034] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:12:33,503 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:12:33,504 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-02-24 01:12:33,504 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207281701] [2022-02-24 01:12:33,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:12:33,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-24 01:12:33,504 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:12:33,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-24 01:12:33,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-02-24 01:12:33,505 INFO L87 Difference]: Start difference. First operand 126 states and 127 transitions. Second operand has 27 states, 27 states have (on average 2.074074074074074) internal successors, (56), 26 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) [2022-02-24 01:12:34,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:12:34,310 INFO L93 Difference]: Finished difference Result 207 states and 210 transitions. [2022-02-24 01:12:34,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-24 01:12:34,310 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.074074074074074) internal successors, (56), 26 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 125 [2022-02-24 01:12:34,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:12:34,311 INFO L225 Difference]: With dead ends: 207 [2022-02-24 01:12:34,311 INFO L226 Difference]: Without dead ends: 134 [2022-02-24 01:12:34,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2022-02-24 01:12:34,312 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 74 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 2356 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 2407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-24 01:12:34,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 656 Invalid, 2407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2356 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-24 01:12:34,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-02-24 01:12:34,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 131. [2022-02-24 01:12:34,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 127 states have (on average 1.015748031496063) internal successors, (129), 127 states have internal predecessors, (129), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:12:34,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2022-02-24 01:12:34,320 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 125 [2022-02-24 01:12:34,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:12:34,320 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2022-02-24 01:12:34,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.074074074074074) internal successors, (56), 26 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) [2022-02-24 01:12:34,320 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2022-02-24 01:12:34,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-02-24 01:12:34,321 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:34,321 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:34,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-02-24 01:12:34,321 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:34,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:34,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1108647936, now seen corresponding path program 24 times [2022-02-24 01:12:34,322 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:34,322 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750391814] [2022-02-24 01:12:34,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:34,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:34,326 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:12:34,326 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:12:34,326 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:12:34,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:34,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:12:34,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:34,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:12:34,825 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:12:34,825 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1750391814] [2022-02-24 01:12:34,825 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1750391814] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:12:34,825 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:12:34,825 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-02-24 01:12:34,825 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355802988] [2022-02-24 01:12:34,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:12:34,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-24 01:12:34,826 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:12:34,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-24 01:12:34,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2022-02-24 01:12:34,826 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 27 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) [2022-02-24 01:12:35,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:12:35,724 INFO L93 Difference]: Finished difference Result 215 states and 218 transitions. [2022-02-24 01:12:35,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-24 01:12:35,725 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 27 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 130 [2022-02-24 01:12:35,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:12:35,726 INFO L225 Difference]: With dead ends: 215 [2022-02-24 01:12:35,726 INFO L226 Difference]: Without dead ends: 139 [2022-02-24 01:12:35,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2022-02-24 01:12:35,727 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 79 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 2551 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 2605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-24 01:12:35,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 703 Invalid, 2605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2551 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-24 01:12:35,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-02-24 01:12:35,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 136. [2022-02-24 01:12:35,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 132 states have (on average 1.0151515151515151) internal successors, (134), 132 states have internal predecessors, (134), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:12:35,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2022-02-24 01:12:35,735 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 130 [2022-02-24 01:12:35,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:12:35,735 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2022-02-24 01:12:35,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 27 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) [2022-02-24 01:12:35,735 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2022-02-24 01:12:35,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-02-24 01:12:35,736 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:35,736 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:35,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-02-24 01:12:35,737 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:35,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:35,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1498745739, now seen corresponding path program 25 times [2022-02-24 01:12:35,737 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:35,737 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743385861] [2022-02-24 01:12:35,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:35,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:35,741 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:12:35,741 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:12:35,741 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:12:35,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:36,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:12:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:36,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:12:36,297 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:12:36,297 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743385861] [2022-02-24 01:12:36,297 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1743385861] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:12:36,297 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:12:36,297 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-02-24 01:12:36,297 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651189445] [2022-02-24 01:12:36,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:12:36,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-24 01:12:36,298 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:12:36,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-24 01:12:36,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=732, Unknown=0, NotChecked=0, Total=812 [2022-02-24 01:12:36,298 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand has 29 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 28 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) [2022-02-24 01:12:37,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:12:37,254 INFO L93 Difference]: Finished difference Result 223 states and 226 transitions. [2022-02-24 01:12:37,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-24 01:12:37,254 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 28 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 135 [2022-02-24 01:12:37,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:12:37,255 INFO L225 Difference]: With dead ends: 223 [2022-02-24 01:12:37,255 INFO L226 Difference]: Without dead ends: 144 [2022-02-24 01:12:37,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=785, Unknown=0, NotChecked=0, Total=870 [2022-02-24 01:12:37,256 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 100 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 2730 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 2795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 2730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-24 01:12:37,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 712 Invalid, 2795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 2730 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-24 01:12:37,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-02-24 01:12:37,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 141. [2022-02-24 01:12:37,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 137 states have (on average 1.0145985401459854) internal successors, (139), 137 states have internal predecessors, (139), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:12:37,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 142 transitions. [2022-02-24 01:12:37,264 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 142 transitions. Word has length 135 [2022-02-24 01:12:37,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:12:37,265 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 142 transitions. [2022-02-24 01:12:37,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 28 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) [2022-02-24 01:12:37,265 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 142 transitions. [2022-02-24 01:12:37,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-02-24 01:12:37,266 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:37,266 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:37,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-24 01:12:37,266 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:37,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:37,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1545455388, now seen corresponding path program 26 times [2022-02-24 01:12:37,267 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:37,267 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541383466] [2022-02-24 01:12:37,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:37,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:37,270 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:12:37,271 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:12:37,271 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:12:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:37,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:12:37,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:37,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:12:37,869 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:12:37,870 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541383466] [2022-02-24 01:12:37,870 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1541383466] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:12:37,870 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:12:37,870 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-02-24 01:12:37,870 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463388099] [2022-02-24 01:12:37,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:12:37,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-24 01:12:37,870 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:12:37,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-24 01:12:37,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=787, Unknown=0, NotChecked=0, Total=870 [2022-02-24 01:12:37,871 INFO L87 Difference]: Start difference. First operand 141 states and 142 transitions. Second operand has 30 states, 30 states have (on average 2.066666666666667) internal successors, (62), 29 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) [2022-02-24 01:12:38,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:12:38,912 INFO L93 Difference]: Finished difference Result 231 states and 234 transitions. [2022-02-24 01:12:38,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-24 01:12:38,913 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.066666666666667) internal successors, (62), 29 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 140 [2022-02-24 01:12:38,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:12:38,914 INFO L225 Difference]: With dead ends: 231 [2022-02-24 01:12:38,914 INFO L226 Difference]: Without dead ends: 149 [2022-02-24 01:12:38,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=842, Unknown=0, NotChecked=0, Total=930 [2022-02-24 01:12:38,915 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 83 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 2974 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 3031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:12:38,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 818 Invalid, 3031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2974 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-24 01:12:38,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-02-24 01:12:38,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 146. [2022-02-24 01:12:38,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 142 states have (on average 1.0140845070422535) internal successors, (144), 142 states have internal predecessors, (144), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:12:38,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 147 transitions. [2022-02-24 01:12:38,923 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 147 transitions. Word has length 140 [2022-02-24 01:12:38,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:12:38,923 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 147 transitions. [2022-02-24 01:12:38,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.066666666666667) internal successors, (62), 29 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) [2022-02-24 01:12:38,924 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 147 transitions. [2022-02-24 01:12:38,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-02-24 01:12:38,925 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:38,925 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:38,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-02-24 01:12:38,925 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:38,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:38,925 INFO L85 PathProgramCache]: Analyzing trace with hash 223462289, now seen corresponding path program 27 times [2022-02-24 01:12:38,925 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:38,926 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242904958] [2022-02-24 01:12:38,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:38,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:38,929 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:12:38,929 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:12:38,929 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:12:39,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:39,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:12:39,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:39,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:12:39,525 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:12:39,525 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242904958] [2022-02-24 01:12:39,525 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [242904958] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:12:39,525 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:12:39,525 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-02-24 01:12:39,525 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125213703] [2022-02-24 01:12:39,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:12:39,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-24 01:12:39,526 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:12:39,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-24 01:12:39,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2022-02-24 01:12:39,527 INFO L87 Difference]: Start difference. First operand 146 states and 147 transitions. Second operand has 31 states, 31 states have (on average 2.064516129032258) internal successors, (64), 30 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) [2022-02-24 01:12:40,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:12:40,638 INFO L93 Difference]: Finished difference Result 239 states and 242 transitions. [2022-02-24 01:12:40,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-24 01:12:40,639 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.064516129032258) internal successors, (64), 30 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 145 [2022-02-24 01:12:40,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:12:40,640 INFO L225 Difference]: With dead ends: 239 [2022-02-24 01:12:40,640 INFO L226 Difference]: Without dead ends: 154 [2022-02-24 01:12:40,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=901, Unknown=0, NotChecked=0, Total=992 [2022-02-24 01:12:40,643 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 96 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 3181 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 3245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:12:40,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 851 Invalid, 3245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 3181 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-24 01:12:40,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-02-24 01:12:40,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 151. [2022-02-24 01:12:40,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 147 states have (on average 1.0136054421768708) internal successors, (149), 147 states have internal predecessors, (149), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:12:40,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2022-02-24 01:12:40,657 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 145 [2022-02-24 01:12:40,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:12:40,658 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2022-02-24 01:12:40,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.064516129032258) internal successors, (64), 30 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) [2022-02-24 01:12:40,658 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2022-02-24 01:12:40,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-02-24 01:12:40,659 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:40,659 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:40,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-02-24 01:12:40,660 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:40,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:40,660 INFO L85 PathProgramCache]: Analyzing trace with hash 857362888, now seen corresponding path program 28 times [2022-02-24 01:12:40,660 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:40,660 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756702570] [2022-02-24 01:12:40,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:40,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:40,666 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:12:40,666 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:12:40,666 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:12:40,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:41,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:12:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:41,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:12:41,335 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:12:41,335 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756702570] [2022-02-24 01:12:41,335 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [756702570] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:12:41,336 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:12:41,336 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-02-24 01:12:41,336 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366031852] [2022-02-24 01:12:41,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:12:41,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-24 01:12:41,336 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:12:41,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-24 01:12:41,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=903, Unknown=0, NotChecked=0, Total=992 [2022-02-24 01:12:41,337 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 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) [2022-02-24 01:12:42,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:12:42,458 INFO L93 Difference]: Finished difference Result 247 states and 250 transitions. [2022-02-24 01:12:42,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-24 01:12:42,459 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 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 150 [2022-02-24 01:12:42,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:12:42,459 INFO L225 Difference]: With dead ends: 247 [2022-02-24 01:12:42,460 INFO L226 Difference]: Without dead ends: 159 [2022-02-24 01:12:42,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=962, Unknown=0, NotChecked=0, Total=1056 [2022-02-24 01:12:42,461 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 115 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 3387 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 3461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 3387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:12:42,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 871 Invalid, 3461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 3387 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-24 01:12:42,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-02-24 01:12:42,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 156. [2022-02-24 01:12:42,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 152 states have (on average 1.013157894736842) internal successors, (154), 152 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:12:42,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 157 transitions. [2022-02-24 01:12:42,469 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 157 transitions. Word has length 150 [2022-02-24 01:12:42,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:12:42,469 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 157 transitions. [2022-02-24 01:12:42,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 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) [2022-02-24 01:12:42,470 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 157 transitions. [2022-02-24 01:12:42,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-02-24 01:12:42,471 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:42,471 INFO L514 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:42,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-02-24 01:12:42,471 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:42,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:42,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1571697325, now seen corresponding path program 29 times [2022-02-24 01:12:42,471 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:42,472 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146478177] [2022-02-24 01:12:42,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:42,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:42,475 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:12:42,475 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:12:42,475 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:12:42,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:43,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:12:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:43,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:12:43,168 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:12:43,168 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146478177] [2022-02-24 01:12:43,169 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [146478177] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:12:43,169 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:12:43,169 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-02-24 01:12:43,169 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784843829] [2022-02-24 01:12:43,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:12:43,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-24 01:12:43,170 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:12:43,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-24 01:12:43,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=964, Unknown=0, NotChecked=0, Total=1056 [2022-02-24 01:12:43,171 INFO L87 Difference]: Start difference. First operand 156 states and 157 transitions. Second operand has 33 states, 33 states have (on average 2.0606060606060606) internal successors, (68), 32 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) [2022-02-24 01:12:44,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:12:44,385 INFO L93 Difference]: Finished difference Result 255 states and 258 transitions. [2022-02-24 01:12:44,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-24 01:12:44,385 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0606060606060606) internal successors, (68), 32 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 155 [2022-02-24 01:12:44,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:12:44,386 INFO L225 Difference]: With dead ends: 255 [2022-02-24 01:12:44,386 INFO L226 Difference]: Without dead ends: 164 [2022-02-24 01:12:44,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=97, Invalid=1025, Unknown=0, NotChecked=0, Total=1122 [2022-02-24 01:12:44,387 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 108 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 3640 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 3711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 3640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-24 01:12:44,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 958 Invalid, 3711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 3640 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-24 01:12:44,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-02-24 01:12:44,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 161. [2022-02-24 01:12:44,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 157 states have (on average 1.0127388535031847) internal successors, (159), 157 states have internal predecessors, (159), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:12:44,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 162 transitions. [2022-02-24 01:12:44,394 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 162 transitions. Word has length 155 [2022-02-24 01:12:44,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:12:44,394 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 162 transitions. [2022-02-24 01:12:44,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.0606060606060606) internal successors, (68), 32 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) [2022-02-24 01:12:44,394 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 162 transitions. [2022-02-24 01:12:44,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-02-24 01:12:44,395 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:44,395 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:44,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-02-24 01:12:44,396 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:44,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:44,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1140462932, now seen corresponding path program 30 times [2022-02-24 01:12:44,396 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:44,396 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899150330] [2022-02-24 01:12:44,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:44,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:44,401 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:12:44,401 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:12:44,401 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:12:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:45,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:12:45,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:45,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:12:45,112 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:12:45,113 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899150330] [2022-02-24 01:12:45,113 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [899150330] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:12:45,113 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:12:45,113 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-02-24 01:12:45,113 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408570630] [2022-02-24 01:12:45,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:12:45,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-24 01:12:45,113 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:12:45,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-24 01:12:45,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1027, Unknown=0, NotChecked=0, Total=1122 [2022-02-24 01:12:45,114 INFO L87 Difference]: Start difference. First operand 161 states and 162 transitions. Second operand has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 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) [2022-02-24 01:12:46,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:12:46,505 INFO L93 Difference]: Finished difference Result 263 states and 266 transitions. [2022-02-24 01:12:46,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-24 01:12:46,506 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 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 160 [2022-02-24 01:12:46,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:12:46,507 INFO L225 Difference]: With dead ends: 263 [2022-02-24 01:12:46,507 INFO L226 Difference]: Without dead ends: 169 [2022-02-24 01:12:46,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=100, Invalid=1090, Unknown=0, NotChecked=0, Total=1190 [2022-02-24 01:12:46,508 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 121 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 3871 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 3949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 3871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-24 01:12:46,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 997 Invalid, 3949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 3871 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-24 01:12:46,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-02-24 01:12:46,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 166. [2022-02-24 01:12:46,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 162 states have (on average 1.0123456790123457) internal successors, (164), 162 states have internal predecessors, (164), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:12:46,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 167 transitions. [2022-02-24 01:12:46,515 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 167 transitions. Word has length 160 [2022-02-24 01:12:46,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:12:46,516 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 167 transitions. [2022-02-24 01:12:46,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 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) [2022-02-24 01:12:46,516 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 167 transitions. [2022-02-24 01:12:46,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-02-24 01:12:46,517 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:46,517 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:46,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-02-24 01:12:46,517 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:46,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:46,517 INFO L85 PathProgramCache]: Analyzing trace with hash 235798985, now seen corresponding path program 31 times [2022-02-24 01:12:46,518 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:46,518 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790462204] [2022-02-24 01:12:46,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:46,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:46,521 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:12:46,521 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:12:46,521 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:12:46,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:47,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:12:47,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:47,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:12:47,292 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:12:47,292 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1790462204] [2022-02-24 01:12:47,292 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1790462204] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:12:47,292 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:12:47,292 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-02-24 01:12:47,292 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588382312] [2022-02-24 01:12:47,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:12:47,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-24 01:12:47,293 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:12:47,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-24 01:12:47,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1092, Unknown=0, NotChecked=0, Total=1190 [2022-02-24 01:12:47,294 INFO L87 Difference]: Start difference. First operand 166 states and 167 transitions. Second operand has 35 states, 35 states have (on average 2.057142857142857) internal successors, (72), 34 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) [2022-02-24 01:12:48,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:12:48,604 INFO L93 Difference]: Finished difference Result 271 states and 274 transitions. [2022-02-24 01:12:48,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-24 01:12:48,605 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.057142857142857) internal successors, (72), 34 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 165 [2022-02-24 01:12:48,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:12:48,606 INFO L225 Difference]: With dead ends: 271 [2022-02-24 01:12:48,606 INFO L226 Difference]: Without dead ends: 174 [2022-02-24 01:12:48,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=103, Invalid=1157, Unknown=0, NotChecked=0, Total=1260 [2022-02-24 01:12:48,607 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 120 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 4131 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 4209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 4131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-24 01:12:48,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 1073 Invalid, 4209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 4131 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-24 01:12:48,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-02-24 01:12:48,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 171. [2022-02-24 01:12:48,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 167 states have (on average 1.0119760479041917) internal successors, (169), 167 states have internal predecessors, (169), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:12:48,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2022-02-24 01:12:48,615 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 165 [2022-02-24 01:12:48,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:12:48,616 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2022-02-24 01:12:48,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.057142857142857) internal successors, (72), 34 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) [2022-02-24 01:12:48,616 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2022-02-24 01:12:48,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-02-24 01:12:48,618 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:48,618 INFO L514 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:48,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-02-24 01:12:48,618 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:48,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:48,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1701362800, now seen corresponding path program 32 times [2022-02-24 01:12:48,619 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:48,619 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641421175] [2022-02-24 01:12:48,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:48,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:48,622 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:12:48,623 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:12:48,623 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:12:48,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:49,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:12:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:49,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:12:49,301 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:12:49,301 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641421175] [2022-02-24 01:12:49,301 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [641421175] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:12:49,301 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:12:49,301 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-02-24 01:12:49,301 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289991681] [2022-02-24 01:12:49,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:12:49,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-24 01:12:49,302 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:12:49,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-24 01:12:49,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1159, Unknown=0, NotChecked=0, Total=1260 [2022-02-24 01:12:49,302 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand has 36 states, 36 states have (on average 2.0555555555555554) internal successors, (74), 35 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) [2022-02-24 01:12:50,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:12:50,742 INFO L93 Difference]: Finished difference Result 279 states and 282 transitions. [2022-02-24 01:12:50,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-24 01:12:50,742 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.0555555555555554) internal successors, (74), 35 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 170 [2022-02-24 01:12:50,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:12:50,743 INFO L225 Difference]: With dead ends: 279 [2022-02-24 01:12:50,743 INFO L226 Difference]: Without dead ends: 179 [2022-02-24 01:12:50,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=106, Invalid=1226, Unknown=0, NotChecked=0, Total=1332 [2022-02-24 01:12:50,744 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 137 mSDsluCounter, 1065 mSDsCounter, 0 mSdLazyCounter, 4372 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 4459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 4372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-24 01:12:50,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 1106 Invalid, 4459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 4372 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-24 01:12:50,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-02-24 01:12:50,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 176. [2022-02-24 01:12:50,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 172 states have (on average 1.0116279069767442) internal successors, (174), 172 states have internal predecessors, (174), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:12:50,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 177 transitions. [2022-02-24 01:12:50,752 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 177 transitions. Word has length 170 [2022-02-24 01:12:50,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:12:50,753 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 177 transitions. [2022-02-24 01:12:50,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.0555555555555554) internal successors, (74), 35 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) [2022-02-24 01:12:50,753 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 177 transitions. [2022-02-24 01:12:50,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-02-24 01:12:50,754 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:50,754 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:50,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-02-24 01:12:50,754 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:50,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:50,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1463742693, now seen corresponding path program 33 times [2022-02-24 01:12:50,755 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:50,755 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145140922] [2022-02-24 01:12:50,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:50,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:50,758 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:12:50,758 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:12:50,759 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:12:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:51,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:12:51,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:51,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:12:51,588 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:12:51,589 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145140922] [2022-02-24 01:12:51,589 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2145140922] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:12:51,589 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:12:51,589 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-02-24 01:12:51,589 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506830339] [2022-02-24 01:12:51,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:12:51,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-24 01:12:51,590 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:12:51,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-24 01:12:51,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1228, Unknown=0, NotChecked=0, Total=1332 [2022-02-24 01:12:51,591 INFO L87 Difference]: Start difference. First operand 176 states and 177 transitions. Second operand has 37 states, 37 states have (on average 2.054054054054054) internal successors, (76), 36 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) [2022-02-24 01:12:53,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:12:53,117 INFO L93 Difference]: Finished difference Result 287 states and 290 transitions. [2022-02-24 01:12:53,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-24 01:12:53,119 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.054054054054054) internal successors, (76), 36 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 175 [2022-02-24 01:12:53,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:12:53,120 INFO L225 Difference]: With dead ends: 287 [2022-02-24 01:12:53,120 INFO L226 Difference]: Without dead ends: 184 [2022-02-24 01:12:53,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=109, Invalid=1297, Unknown=0, NotChecked=0, Total=1406 [2022-02-24 01:12:53,121 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 154 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 4621 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 4717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 4621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-24 01:12:53,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 1141 Invalid, 4717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 4621 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-24 01:12:53,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-02-24 01:12:53,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 181. [2022-02-24 01:12:53,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 177 states have (on average 1.0112994350282485) internal successors, (179), 177 states have internal predecessors, (179), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:12:53,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 182 transitions. [2022-02-24 01:12:53,130 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 182 transitions. Word has length 175 [2022-02-24 01:12:53,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:12:53,130 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 182 transitions. [2022-02-24 01:12:53,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.054054054054054) internal successors, (76), 36 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) [2022-02-24 01:12:53,130 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 182 transitions. [2022-02-24 01:12:53,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-02-24 01:12:53,131 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:53,131 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:53,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-02-24 01:12:53,131 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:53,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:53,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1707041676, now seen corresponding path program 34 times [2022-02-24 01:12:53,132 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:53,132 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868489930] [2022-02-24 01:12:53,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:53,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:53,136 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:12:53,136 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:12:53,137 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:12:53,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:53,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:12:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:53,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:12:53,923 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:12:53,923 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868489930] [2022-02-24 01:12:53,923 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [868489930] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:12:53,923 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:12:53,923 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-02-24 01:12:53,923 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976768863] [2022-02-24 01:12:53,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:12:53,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-24 01:12:53,924 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:12:53,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-24 01:12:53,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1299, Unknown=0, NotChecked=0, Total=1406 [2022-02-24 01:12:53,925 INFO L87 Difference]: Start difference. First operand 181 states and 182 transitions. Second operand has 38 states, 38 states have (on average 2.0526315789473686) internal successors, (78), 37 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) [2022-02-24 01:12:55,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:12:55,569 INFO L93 Difference]: Finished difference Result 295 states and 298 transitions. [2022-02-24 01:12:55,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-24 01:12:55,569 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.0526315789473686) internal successors, (78), 37 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 180 [2022-02-24 01:12:55,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:12:55,570 INFO L225 Difference]: With dead ends: 295 [2022-02-24 01:12:55,570 INFO L226 Difference]: Without dead ends: 189 [2022-02-24 01:12:55,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=112, Invalid=1370, Unknown=0, NotChecked=0, Total=1482 [2022-02-24 01:12:55,571 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 111 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 4968 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 5043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 4968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-24 01:12:55,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 1328 Invalid, 5043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 4968 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-24 01:12:55,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-02-24 01:12:55,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 186. [2022-02-24 01:12:55,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 182 states have (on average 1.010989010989011) internal successors, (184), 182 states have internal predecessors, (184), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:12:55,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 187 transitions. [2022-02-24 01:12:55,579 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 187 transitions. Word has length 180 [2022-02-24 01:12:55,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:12:55,579 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 187 transitions. [2022-02-24 01:12:55,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.0526315789473686) internal successors, (78), 37 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) [2022-02-24 01:12:55,579 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 187 transitions. [2022-02-24 01:12:55,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-02-24 01:12:55,580 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:55,580 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:55,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-02-24 01:12:55,580 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:55,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:55,581 INFO L85 PathProgramCache]: Analyzing trace with hash -795951103, now seen corresponding path program 35 times [2022-02-24 01:12:55,581 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:55,581 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634467757] [2022-02-24 01:12:55,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:55,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:55,585 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:12:55,585 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:12:55,585 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:12:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:56,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:12:56,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:56,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:12:56,378 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:12:56,379 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634467757] [2022-02-24 01:12:56,379 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [634467757] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:12:56,379 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:12:56,379 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-02-24 01:12:56,379 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778285281] [2022-02-24 01:12:56,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:12:56,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-24 01:12:56,379 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:12:56,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-24 01:12:56,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1372, Unknown=0, NotChecked=0, Total=1482 [2022-02-24 01:12:56,380 INFO L87 Difference]: Start difference. First operand 186 states and 187 transitions. Second operand has 39 states, 39 states have (on average 2.051282051282051) internal successors, (80), 38 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) [2022-02-24 01:12:58,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:12:58,106 INFO L93 Difference]: Finished difference Result 303 states and 306 transitions. [2022-02-24 01:12:58,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-24 01:12:58,106 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.051282051282051) internal successors, (80), 38 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 185 [2022-02-24 01:12:58,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:12:58,107 INFO L225 Difference]: With dead ends: 303 [2022-02-24 01:12:58,107 INFO L226 Difference]: Without dead ends: 194 [2022-02-24 01:12:58,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=115, Invalid=1445, Unknown=0, NotChecked=0, Total=1560 [2022-02-24 01:12:58,108 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 118 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 5248 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 5327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 5248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-24 01:12:58,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 1392 Invalid, 5327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 5248 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-24 01:12:58,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-02-24 01:12:58,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 191. [2022-02-24 01:12:58,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 187 states have (on average 1.0106951871657754) internal successors, (189), 187 states have internal predecessors, (189), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:12:58,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2022-02-24 01:12:58,117 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 185 [2022-02-24 01:12:58,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:12:58,117 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2022-02-24 01:12:58,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.051282051282051) internal successors, (80), 38 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) [2022-02-24 01:12:58,117 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2022-02-24 01:12:58,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-02-24 01:12:58,118 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:12:58,118 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:12:58,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-02-24 01:12:58,119 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:12:58,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:12:58,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1509176664, now seen corresponding path program 36 times [2022-02-24 01:12:58,119 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:12:58,119 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911107978] [2022-02-24 01:12:58,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:12:58,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:12:58,123 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:12:58,123 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:12:58,123 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:12:58,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:59,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:12:59,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:12:59,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:12:59,024 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:12:59,024 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911107978] [2022-02-24 01:12:59,024 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [911107978] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:12:59,024 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:12:59,024 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-02-24 01:12:59,024 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671365807] [2022-02-24 01:12:59,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:12:59,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-24 01:12:59,025 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:12:59,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-24 01:12:59,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1447, Unknown=0, NotChecked=0, Total=1560 [2022-02-24 01:12:59,026 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand has 40 states, 40 states have (on average 2.05) internal successors, (82), 39 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) [2022-02-24 01:13:00,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:13:00,740 INFO L93 Difference]: Finished difference Result 311 states and 314 transitions. [2022-02-24 01:13:00,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-24 01:13:00,740 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.05) internal successors, (82), 39 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 190 [2022-02-24 01:13:00,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:13:00,741 INFO L225 Difference]: With dead ends: 311 [2022-02-24 01:13:00,741 INFO L226 Difference]: Without dead ends: 199 [2022-02-24 01:13:00,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=118, Invalid=1522, Unknown=0, NotChecked=0, Total=1640 [2022-02-24 01:13:00,742 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 181 mSDsluCounter, 1273 mSDsCounter, 0 mSdLazyCounter, 5452 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 5563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 5452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-24 01:13:00,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 1318 Invalid, 5563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 5452 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-24 01:13:00,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-02-24 01:13:00,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 196. [2022-02-24 01:13:00,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 192 states have (on average 1.0104166666666667) internal successors, (194), 192 states have internal predecessors, (194), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:13:00,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 197 transitions. [2022-02-24 01:13:00,751 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 197 transitions. Word has length 190 [2022-02-24 01:13:00,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:13:00,752 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 197 transitions. [2022-02-24 01:13:00,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.05) internal successors, (82), 39 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) [2022-02-24 01:13:00,752 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 197 transitions. [2022-02-24 01:13:00,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-02-24 01:13:00,753 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:13:00,753 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:13:00,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-02-24 01:13:00,753 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:13:00,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:13:00,753 INFO L85 PathProgramCache]: Analyzing trace with hash 197865245, now seen corresponding path program 37 times [2022-02-24 01:13:00,754 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:13:00,754 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952514332] [2022-02-24 01:13:00,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:13:00,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:13:00,758 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:13:00,758 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:13:00,758 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:13:00,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:01,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:13:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:01,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:13:01,678 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:13:01,678 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952514332] [2022-02-24 01:13:01,678 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1952514332] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:13:01,678 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:13:01,678 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2022-02-24 01:13:01,678 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71359667] [2022-02-24 01:13:01,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:13:01,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-24 01:13:01,680 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:13:01,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-24 01:13:01,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1524, Unknown=0, NotChecked=0, Total=1640 [2022-02-24 01:13:01,681 INFO L87 Difference]: Start difference. First operand 196 states and 197 transitions. Second operand has 41 states, 41 states have (on average 2.048780487804878) internal successors, (84), 40 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) [2022-02-24 01:13:03,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:13:03,476 INFO L93 Difference]: Finished difference Result 319 states and 322 transitions. [2022-02-24 01:13:03,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-24 01:13:03,476 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.048780487804878) internal successors, (84), 40 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 195 [2022-02-24 01:13:03,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:13:03,477 INFO L225 Difference]: With dead ends: 319 [2022-02-24 01:13:03,477 INFO L226 Difference]: Without dead ends: 204 [2022-02-24 01:13:03,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=121, Invalid=1601, Unknown=0, NotChecked=0, Total=1722 [2022-02-24 01:13:03,478 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 168 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 5778 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 5883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 5778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-24 01:13:03,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 1436 Invalid, 5883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 5778 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-24 01:13:03,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-02-24 01:13:03,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 201. [2022-02-24 01:13:03,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 197 states have (on average 1.0101522842639594) internal successors, (199), 197 states have internal predecessors, (199), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:13:03,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 202 transitions. [2022-02-24 01:13:03,487 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 202 transitions. Word has length 195 [2022-02-24 01:13:03,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:13:03,487 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 202 transitions. [2022-02-24 01:13:03,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.048780487804878) internal successors, (84), 40 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) [2022-02-24 01:13:03,488 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 202 transitions. [2022-02-24 01:13:03,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-02-24 01:13:03,488 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:13:03,489 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:13:03,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-02-24 01:13:03,489 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:13:03,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:13:03,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1339797956, now seen corresponding path program 38 times [2022-02-24 01:13:03,489 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:13:03,489 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047918980] [2022-02-24 01:13:03,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:13:03,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:13:03,494 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:13:03,494 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:13:03,494 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:13:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:04,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:13:04,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:04,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:13:04,393 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:13:04,393 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047918980] [2022-02-24 01:13:04,393 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2047918980] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:13:04,393 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:13:04,393 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-02-24 01:13:04,393 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802905907] [2022-02-24 01:13:04,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:13:04,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-24 01:13:04,394 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:13:04,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-24 01:13:04,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1603, Unknown=0, NotChecked=0, Total=1722 [2022-02-24 01:13:04,395 INFO L87 Difference]: Start difference. First operand 201 states and 202 transitions. Second operand has 42 states, 42 states have (on average 2.0476190476190474) internal successors, (86), 41 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) [2022-02-24 01:13:06,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:13:06,298 INFO L93 Difference]: Finished difference Result 327 states and 330 transitions. [2022-02-24 01:13:06,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-24 01:13:06,298 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.0476190476190474) internal successors, (86), 41 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 200 [2022-02-24 01:13:06,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:13:06,299 INFO L225 Difference]: With dead ends: 327 [2022-02-24 01:13:06,299 INFO L226 Difference]: Without dead ends: 209 [2022-02-24 01:13:06,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=124, Invalid=1682, Unknown=0, NotChecked=0, Total=1806 [2022-02-24 01:13:06,300 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 155 mSDsluCounter, 1509 mSDsCounter, 0 mSdLazyCounter, 6112 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 1556 SdHoareTripleChecker+Invalid, 6211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 6112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-24 01:13:06,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 1556 Invalid, 6211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 6112 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-24 01:13:06,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-02-24 01:13:06,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 206. [2022-02-24 01:13:06,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 202 states have (on average 1.00990099009901) internal successors, (204), 202 states have internal predecessors, (204), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:13:06,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 207 transitions. [2022-02-24 01:13:06,310 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 207 transitions. Word has length 200 [2022-02-24 01:13:06,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:13:06,310 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 207 transitions. [2022-02-24 01:13:06,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.0476190476190474) internal successors, (86), 41 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) [2022-02-24 01:13:06,311 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 207 transitions. [2022-02-24 01:13:06,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-02-24 01:13:06,312 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:13:06,312 INFO L514 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:13:06,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-02-24 01:13:06,312 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:13:06,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:13:06,313 INFO L85 PathProgramCache]: Analyzing trace with hash 826408505, now seen corresponding path program 39 times [2022-02-24 01:13:06,313 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:13:06,313 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495399166] [2022-02-24 01:13:06,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:13:06,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:13:06,317 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:13:06,317 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:13:06,318 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:13:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:07,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:13:07,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:07,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:13:07,373 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:13:07,373 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495399166] [2022-02-24 01:13:07,373 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1495399166] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:13:07,373 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:13:07,373 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-02-24 01:13:07,373 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544933760] [2022-02-24 01:13:07,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:13:07,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-02-24 01:13:07,374 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:13:07,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-02-24 01:13:07,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1684, Unknown=0, NotChecked=0, Total=1806 [2022-02-24 01:13:07,376 INFO L87 Difference]: Start difference. First operand 206 states and 207 transitions. Second operand has 43 states, 43 states have (on average 2.046511627906977) internal successors, (88), 42 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) [2022-02-24 01:13:09,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:13:09,409 INFO L93 Difference]: Finished difference Result 335 states and 338 transitions. [2022-02-24 01:13:09,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-24 01:13:09,409 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.046511627906977) internal successors, (88), 42 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 205 [2022-02-24 01:13:09,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:13:09,410 INFO L225 Difference]: With dead ends: 335 [2022-02-24 01:13:09,410 INFO L226 Difference]: Without dead ends: 214 [2022-02-24 01:13:09,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=127, Invalid=1765, Unknown=0, NotChecked=0, Total=1892 [2022-02-24 01:13:09,411 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 144 mSDsluCounter, 1625 mSDsCounter, 0 mSdLazyCounter, 6451 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1673 SdHoareTripleChecker+Invalid, 6545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 6451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:13:09,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 1673 Invalid, 6545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 6451 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-02-24 01:13:09,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-02-24 01:13:09,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 211. [2022-02-24 01:13:09,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 207 states have (on average 1.0096618357487923) internal successors, (209), 207 states have internal predecessors, (209), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:13:09,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 212 transitions. [2022-02-24 01:13:09,422 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 212 transitions. Word has length 205 [2022-02-24 01:13:09,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:13:09,422 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 212 transitions. [2022-02-24 01:13:09,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.046511627906977) internal successors, (88), 42 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) [2022-02-24 01:13:09,422 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 212 transitions. [2022-02-24 01:13:09,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-02-24 01:13:09,423 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:13:09,423 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:13:09,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-02-24 01:13:09,424 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:13:09,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:13:09,424 INFO L85 PathProgramCache]: Analyzing trace with hash 247670560, now seen corresponding path program 40 times [2022-02-24 01:13:09,424 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:13:09,424 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13698892] [2022-02-24 01:13:09,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:13:09,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:13:09,429 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:13:09,429 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:13:09,429 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:13:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:10,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:13:10,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:10,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:13:10,422 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:13:10,423 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13698892] [2022-02-24 01:13:10,423 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [13698892] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:13:10,423 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:13:10,423 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-02-24 01:13:10,423 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091172448] [2022-02-24 01:13:10,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:13:10,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-02-24 01:13:10,424 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:13:10,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-02-24 01:13:10,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1767, Unknown=0, NotChecked=0, Total=1892 [2022-02-24 01:13:10,425 INFO L87 Difference]: Start difference. First operand 211 states and 212 transitions. Second operand has 44 states, 44 states have (on average 2.0454545454545454) internal successors, (90), 43 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) [2022-02-24 01:13:12,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:13:12,525 INFO L93 Difference]: Finished difference Result 343 states and 346 transitions. [2022-02-24 01:13:12,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-24 01:13:12,526 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.0454545454545454) internal successors, (90), 43 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 210 [2022-02-24 01:13:12,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:13:12,526 INFO L225 Difference]: With dead ends: 343 [2022-02-24 01:13:12,527 INFO L226 Difference]: Without dead ends: 219 [2022-02-24 01:13:12,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=130, Invalid=1850, Unknown=0, NotChecked=0, Total=1980 [2022-02-24 01:13:12,527 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 171 mSDsluCounter, 1648 mSDsCounter, 0 mSdLazyCounter, 6741 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 1697 SdHoareTripleChecker+Invalid, 6849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 6741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:13:12,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 1697 Invalid, 6849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 6741 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-02-24 01:13:12,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-02-24 01:13:12,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 216. [2022-02-24 01:13:12,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 212 states have (on average 1.009433962264151) internal successors, (214), 212 states have internal predecessors, (214), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:13:12,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 217 transitions. [2022-02-24 01:13:12,537 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 217 transitions. Word has length 210 [2022-02-24 01:13:12,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:13:12,537 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 217 transitions. [2022-02-24 01:13:12,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.0454545454545454) internal successors, (90), 43 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) [2022-02-24 01:13:12,537 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 217 transitions. [2022-02-24 01:13:12,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-02-24 01:13:12,538 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:13:12,538 INFO L514 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:13:12,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-02-24 01:13:12,539 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:13:12,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:13:12,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1681855147, now seen corresponding path program 41 times [2022-02-24 01:13:12,539 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:13:12,539 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096651564] [2022-02-24 01:13:12,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:13:12,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:13:12,543 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:13:12,544 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:13:12,544 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:13:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:13,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:13:13,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:13,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:13:13,548 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:13:13,548 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096651564] [2022-02-24 01:13:13,548 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2096651564] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:13:13,548 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:13:13,548 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-02-24 01:13:13,548 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115238555] [2022-02-24 01:13:13,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:13:13,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-24 01:13:13,549 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:13:13,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-24 01:13:13,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1852, Unknown=0, NotChecked=0, Total=1980 [2022-02-24 01:13:13,550 INFO L87 Difference]: Start difference. First operand 216 states and 217 transitions. Second operand has 45 states, 45 states have (on average 2.0444444444444443) internal successors, (92), 44 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) [2022-02-24 01:13:15,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:13:15,745 INFO L93 Difference]: Finished difference Result 351 states and 354 transitions. [2022-02-24 01:13:15,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-24 01:13:15,746 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.0444444444444443) internal successors, (92), 44 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 215 [2022-02-24 01:13:15,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:13:15,747 INFO L225 Difference]: With dead ends: 351 [2022-02-24 01:13:15,747 INFO L226 Difference]: Without dead ends: 224 [2022-02-24 01:13:15,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=133, Invalid=1937, Unknown=0, NotChecked=0, Total=2070 [2022-02-24 01:13:15,756 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 174 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 7075 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 1783 SdHoareTripleChecker+Invalid, 7185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 7075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:13:15,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 1783 Invalid, 7185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 7075 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-02-24 01:13:15,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-02-24 01:13:15,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 221. [2022-02-24 01:13:15,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 217 states have (on average 1.0092165898617511) internal successors, (219), 217 states have internal predecessors, (219), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:13:15,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 222 transitions. [2022-02-24 01:13:15,766 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 222 transitions. Word has length 215 [2022-02-24 01:13:15,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:13:15,767 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 222 transitions. [2022-02-24 01:13:15,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.0444444444444443) internal successors, (92), 44 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) [2022-02-24 01:13:15,768 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 222 transitions. [2022-02-24 01:13:15,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-02-24 01:13:15,769 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:13:15,769 INFO L514 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:13:15,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-02-24 01:13:15,769 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:13:15,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:13:15,769 INFO L85 PathProgramCache]: Analyzing trace with hash -415039484, now seen corresponding path program 42 times [2022-02-24 01:13:15,769 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:13:15,769 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805527021] [2022-02-24 01:13:15,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:13:15,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:13:15,774 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:13:15,774 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:13:15,775 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:13:15,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:16,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:13:16,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:16,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:13:16,876 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:13:16,877 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805527021] [2022-02-24 01:13:16,877 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [805527021] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:13:16,877 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:13:16,877 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-02-24 01:13:16,877 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258536926] [2022-02-24 01:13:16,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:13:16,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-02-24 01:13:16,877 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:13:16,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-02-24 01:13:16,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1939, Unknown=0, NotChecked=0, Total=2070 [2022-02-24 01:13:16,878 INFO L87 Difference]: Start difference. First operand 221 states and 222 transitions. Second operand has 46 states, 46 states have (on average 2.0434782608695654) internal successors, (94), 45 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) [2022-02-24 01:13:19,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:13:19,224 INFO L93 Difference]: Finished difference Result 359 states and 362 transitions. [2022-02-24 01:13:19,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-24 01:13:19,224 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.0434782608695654) internal successors, (94), 45 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 220 [2022-02-24 01:13:19,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:13:19,225 INFO L225 Difference]: With dead ends: 359 [2022-02-24 01:13:19,225 INFO L226 Difference]: Without dead ends: 229 [2022-02-24 01:13:19,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=136, Invalid=2026, Unknown=0, NotChecked=0, Total=2162 [2022-02-24 01:13:19,226 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 177 mSDsluCounter, 1820 mSDsCounter, 0 mSdLazyCounter, 7417 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1871 SdHoareTripleChecker+Invalid, 7529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 7417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-02-24 01:13:19,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 1871 Invalid, 7529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 7417 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-02-24 01:13:19,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-02-24 01:13:19,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 226. [2022-02-24 01:13:19,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 222 states have (on average 1.009009009009009) internal successors, (224), 222 states have internal predecessors, (224), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:13:19,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 227 transitions. [2022-02-24 01:13:19,236 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 227 transitions. Word has length 220 [2022-02-24 01:13:19,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:13:19,236 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 227 transitions. [2022-02-24 01:13:19,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.0434782608695654) internal successors, (94), 45 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) [2022-02-24 01:13:19,236 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 227 transitions. [2022-02-24 01:13:19,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-02-24 01:13:19,238 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:13:19,238 INFO L514 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:13:19,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-02-24 01:13:19,238 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:13:19,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:13:19,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1955970161, now seen corresponding path program 43 times [2022-02-24 01:13:19,238 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:13:19,239 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698007657] [2022-02-24 01:13:19,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:13:19,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:13:19,243 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:13:19,243 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:13:19,243 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:13:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:20,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:13:20,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:20,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:13:20,365 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:13:20,365 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698007657] [2022-02-24 01:13:20,365 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [698007657] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:13:20,365 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:13:20,366 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2022-02-24 01:13:20,366 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358699389] [2022-02-24 01:13:20,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:13:20,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-24 01:13:20,366 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:13:20,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-24 01:13:20,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=2028, Unknown=0, NotChecked=0, Total=2162 [2022-02-24 01:13:20,367 INFO L87 Difference]: Start difference. First operand 226 states and 227 transitions. Second operand has 47 states, 47 states have (on average 2.0425531914893615) internal successors, (96), 46 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) [2022-02-24 01:13:22,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:13:22,776 INFO L93 Difference]: Finished difference Result 367 states and 370 transitions. [2022-02-24 01:13:22,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-24 01:13:22,777 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.0425531914893615) internal successors, (96), 46 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 225 [2022-02-24 01:13:22,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:13:22,778 INFO L225 Difference]: With dead ends: 367 [2022-02-24 01:13:22,778 INFO L226 Difference]: Without dead ends: 234 [2022-02-24 01:13:22,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=139, Invalid=2117, Unknown=0, NotChecked=0, Total=2256 [2022-02-24 01:13:22,779 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 184 mSDsluCounter, 1899 mSDsCounter, 0 mSdLazyCounter, 7761 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 1951 SdHoareTripleChecker+Invalid, 7877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 7761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-02-24 01:13:22,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 1951 Invalid, 7877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 7761 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-02-24 01:13:22,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-02-24 01:13:22,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 231. [2022-02-24 01:13:22,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 227 states have (on average 1.0088105726872247) internal successors, (229), 227 states have internal predecessors, (229), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:13:22,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 232 transitions. [2022-02-24 01:13:22,790 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 232 transitions. Word has length 225 [2022-02-24 01:13:22,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:13:22,791 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 232 transitions. [2022-02-24 01:13:22,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.0425531914893615) internal successors, (96), 46 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) [2022-02-24 01:13:22,791 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 232 transitions. [2022-02-24 01:13:22,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-02-24 01:13:22,792 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:13:22,792 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:13:22,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-02-24 01:13:22,792 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:13:22,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:13:22,793 INFO L85 PathProgramCache]: Analyzing trace with hash 244717800, now seen corresponding path program 44 times [2022-02-24 01:13:22,793 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:13:22,793 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611207709] [2022-02-24 01:13:22,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:13:22,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:13:22,798 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:13:22,798 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:13:22,798 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:13:22,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:23,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:13:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:23,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:13:23,932 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:13:23,933 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611207709] [2022-02-24 01:13:23,933 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [611207709] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:13:23,933 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:13:23,933 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-02-24 01:13:23,933 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032038586] [2022-02-24 01:13:23,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:13:23,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-24 01:13:23,933 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:13:23,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-24 01:13:23,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=2119, Unknown=0, NotChecked=0, Total=2256 [2022-02-24 01:13:23,934 INFO L87 Difference]: Start difference. First operand 231 states and 232 transitions. Second operand has 48 states, 48 states have (on average 2.0416666666666665) internal successors, (98), 47 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) [2022-02-24 01:13:26,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:13:26,465 INFO L93 Difference]: Finished difference Result 375 states and 378 transitions. [2022-02-24 01:13:26,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-24 01:13:26,465 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.0416666666666665) internal successors, (98), 47 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 230 [2022-02-24 01:13:26,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:13:26,466 INFO L225 Difference]: With dead ends: 375 [2022-02-24 01:13:26,466 INFO L226 Difference]: Without dead ends: 239 [2022-02-24 01:13:26,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=142, Invalid=2210, Unknown=0, NotChecked=0, Total=2352 [2022-02-24 01:13:26,467 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 189 mSDsluCounter, 1985 mSDsCounter, 0 mSdLazyCounter, 8116 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 2038 SdHoareTripleChecker+Invalid, 8235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 8116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-02-24 01:13:26,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 2038 Invalid, 8235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 8116 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-02-24 01:13:26,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-02-24 01:13:26,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 236. [2022-02-24 01:13:26,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 232 states have (on average 1.0086206896551724) internal successors, (234), 232 states have internal predecessors, (234), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:13:26,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 237 transitions. [2022-02-24 01:13:26,477 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 237 transitions. Word has length 230 [2022-02-24 01:13:26,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:13:26,477 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 237 transitions. [2022-02-24 01:13:26,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.0416666666666665) internal successors, (98), 47 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) [2022-02-24 01:13:26,477 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 237 transitions. [2022-02-24 01:13:26,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-02-24 01:13:26,478 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:13:26,478 INFO L514 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:13:26,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-02-24 01:13:26,479 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:13:26,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:13:26,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1334717325, now seen corresponding path program 45 times [2022-02-24 01:13:26,479 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:13:26,479 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422255063] [2022-02-24 01:13:26,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:13:26,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:13:26,484 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:13:26,484 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:13:26,484 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:13:26,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:27,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:13:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:27,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:13:27,697 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:13:27,697 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422255063] [2022-02-24 01:13:27,697 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1422255063] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:13:27,697 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:13:27,697 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-02-24 01:13:27,697 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078230832] [2022-02-24 01:13:27,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:13:27,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-24 01:13:27,697 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:13:27,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-24 01:13:27,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=2212, Unknown=0, NotChecked=0, Total=2352 [2022-02-24 01:13:27,698 INFO L87 Difference]: Start difference. First operand 236 states and 237 transitions. Second operand has 49 states, 49 states have (on average 2.0408163265306123) internal successors, (100), 48 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) [2022-02-24 01:13:30,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:13:30,305 INFO L93 Difference]: Finished difference Result 383 states and 386 transitions. [2022-02-24 01:13:30,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-24 01:13:30,305 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.0408163265306123) internal successors, (100), 48 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 235 [2022-02-24 01:13:30,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:13:30,306 INFO L225 Difference]: With dead ends: 383 [2022-02-24 01:13:30,306 INFO L226 Difference]: Without dead ends: 244 [2022-02-24 01:13:30,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=145, Invalid=2305, Unknown=0, NotChecked=0, Total=2450 [2022-02-24 01:13:30,307 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 220 mSDsluCounter, 2008 mSDsCounter, 0 mSdLazyCounter, 8440 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 8575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 8440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-02-24 01:13:30,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 2062 Invalid, 8575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 8440 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-02-24 01:13:30,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-02-24 01:13:30,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 241. [2022-02-24 01:13:30,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 237 states have (on average 1.0084388185654007) internal successors, (239), 237 states have internal predecessors, (239), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:13:30,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 242 transitions. [2022-02-24 01:13:30,318 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 242 transitions. Word has length 235 [2022-02-24 01:13:30,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:13:30,318 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 242 transitions. [2022-02-24 01:13:30,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.0408163265306123) internal successors, (100), 48 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) [2022-02-24 01:13:30,318 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 242 transitions. [2022-02-24 01:13:30,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-02-24 01:13:30,319 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:13:30,320 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:13:30,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-02-24 01:13:30,320 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:13:30,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:13:30,320 INFO L85 PathProgramCache]: Analyzing trace with hash 556708300, now seen corresponding path program 46 times [2022-02-24 01:13:30,320 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:13:30,320 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371338191] [2022-02-24 01:13:30,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:13:30,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:13:30,325 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:13:30,325 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:13:30,325 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:13:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:31,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:13:31,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:31,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:13:31,587 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:13:31,587 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371338191] [2022-02-24 01:13:31,587 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [371338191] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:13:31,587 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:13:31,588 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2022-02-24 01:13:31,588 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040741692] [2022-02-24 01:13:31,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:13:31,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-02-24 01:13:31,588 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:13:31,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-02-24 01:13:31,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=2307, Unknown=0, NotChecked=0, Total=2450 [2022-02-24 01:13:31,589 INFO L87 Difference]: Start difference. First operand 241 states and 242 transitions. Second operand has 50 states, 50 states have (on average 2.04) internal successors, (102), 49 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) [2022-02-24 01:13:34,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:13:34,305 INFO L93 Difference]: Finished difference Result 391 states and 394 transitions. [2022-02-24 01:13:34,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-24 01:13:34,305 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.04) internal successors, (102), 49 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 240 [2022-02-24 01:13:34,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:13:34,306 INFO L225 Difference]: With dead ends: 391 [2022-02-24 01:13:34,306 INFO L226 Difference]: Without dead ends: 249 [2022-02-24 01:13:34,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=2402, Unknown=0, NotChecked=0, Total=2550 [2022-02-24 01:13:34,307 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 197 mSDsluCounter, 2168 mSDsCounter, 0 mSdLazyCounter, 8853 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 2223 SdHoareTripleChecker+Invalid, 8977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 8853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-02-24 01:13:34,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 2223 Invalid, 8977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 8853 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-02-24 01:13:34,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-02-24 01:13:34,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 246. [2022-02-24 01:13:34,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 242 states have (on average 1.0082644628099173) internal successors, (244), 242 states have internal predecessors, (244), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:13:34,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 247 transitions. [2022-02-24 01:13:34,315 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 247 transitions. Word has length 240 [2022-02-24 01:13:34,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:13:34,315 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 247 transitions. [2022-02-24 01:13:34,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.04) internal successors, (102), 49 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) [2022-02-24 01:13:34,316 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 247 transitions. [2022-02-24 01:13:34,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-02-24 01:13:34,317 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:13:34,317 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:13:34,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-02-24 01:13:34,317 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:13:34,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:13:34,317 INFO L85 PathProgramCache]: Analyzing trace with hash -956826967, now seen corresponding path program 47 times [2022-02-24 01:13:34,318 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:13:34,318 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894169195] [2022-02-24 01:13:34,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:13:34,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:13:34,325 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:13:34,325 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:13:34,325 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:13:34,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:35,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:13:35,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:35,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:13:35,537 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:13:35,537 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894169195] [2022-02-24 01:13:35,537 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1894169195] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:13:35,537 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:13:35,537 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2022-02-24 01:13:35,537 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652204031] [2022-02-24 01:13:35,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:13:35,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-02-24 01:13:35,537 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:13:35,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-02-24 01:13:35,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=2404, Unknown=0, NotChecked=0, Total=2550 [2022-02-24 01:13:35,538 INFO L87 Difference]: Start difference. First operand 246 states and 247 transitions. Second operand has 51 states, 51 states have (on average 2.0392156862745097) internal successors, (104), 50 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) [2022-02-24 01:13:38,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:13:38,370 INFO L93 Difference]: Finished difference Result 399 states and 402 transitions. [2022-02-24 01:13:38,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-24 01:13:38,370 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.0392156862745097) internal successors, (104), 50 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 245 [2022-02-24 01:13:38,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:13:38,371 INFO L225 Difference]: With dead ends: 399 [2022-02-24 01:13:38,371 INFO L226 Difference]: Without dead ends: 254 [2022-02-24 01:13:38,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=151, Invalid=2501, Unknown=0, NotChecked=0, Total=2652 [2022-02-24 01:13:38,372 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 238 mSDsluCounter, 2170 mSDsCounter, 0 mSdLazyCounter, 9178 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 2226 SdHoareTripleChecker+Invalid, 9323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 9178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-02-24 01:13:38,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 2226 Invalid, 9323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 9178 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-02-24 01:13:38,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-02-24 01:13:38,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 251. [2022-02-24 01:13:38,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 247 states have (on average 1.008097165991903) internal successors, (249), 247 states have internal predecessors, (249), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:13:38,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 252 transitions. [2022-02-24 01:13:38,382 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 252 transitions. Word has length 245 [2022-02-24 01:13:38,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:13:38,382 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 252 transitions. [2022-02-24 01:13:38,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.0392156862745097) internal successors, (104), 50 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) [2022-02-24 01:13:38,382 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 252 transitions. [2022-02-24 01:13:38,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-02-24 01:13:38,383 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:13:38,383 INFO L514 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:13:38,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-02-24 01:13:38,383 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:13:38,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:13:38,384 INFO L85 PathProgramCache]: Analyzing trace with hash -419493200, now seen corresponding path program 48 times [2022-02-24 01:13:38,384 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:13:38,384 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662947980] [2022-02-24 01:13:38,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:13:38,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:13:38,388 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:13:38,389 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:13:38,389 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:13:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:39,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:13:39,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:39,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:13:39,653 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:13:39,653 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662947980] [2022-02-24 01:13:39,653 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [662947980] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:13:39,653 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:13:39,653 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-02-24 01:13:39,653 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486873755] [2022-02-24 01:13:39,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:13:39,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-02-24 01:13:39,654 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:13:39,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-02-24 01:13:39,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=2503, Unknown=0, NotChecked=0, Total=2652 [2022-02-24 01:13:39,655 INFO L87 Difference]: Start difference. First operand 251 states and 252 transitions. Second operand has 52 states, 52 states have (on average 2.0384615384615383) internal successors, (106), 51 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) [2022-02-24 01:13:42,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:13:42,598 INFO L93 Difference]: Finished difference Result 407 states and 410 transitions. [2022-02-24 01:13:42,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-24 01:13:42,598 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.0384615384615383) internal successors, (106), 51 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 250 [2022-02-24 01:13:42,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:13:42,599 INFO L225 Difference]: With dead ends: 407 [2022-02-24 01:13:42,599 INFO L226 Difference]: Without dead ends: 259 [2022-02-24 01:13:42,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=154, Invalid=2602, Unknown=0, NotChecked=0, Total=2756 [2022-02-24 01:13:42,600 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 225 mSDsluCounter, 2309 mSDsCounter, 0 mSdLazyCounter, 9592 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 2366 SdHoareTripleChecker+Invalid, 9731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 9592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-02-24 01:13:42,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 2366 Invalid, 9731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 9592 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-02-24 01:13:42,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-02-24 01:13:42,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 256. [2022-02-24 01:13:42,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 252 states have (on average 1.007936507936508) internal successors, (254), 252 states have internal predecessors, (254), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:13:42,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 257 transitions. [2022-02-24 01:13:42,610 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 257 transitions. Word has length 250 [2022-02-24 01:13:42,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:13:42,610 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 257 transitions. [2022-02-24 01:13:42,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.0384615384615383) internal successors, (106), 51 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) [2022-02-24 01:13:42,610 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 257 transitions. [2022-02-24 01:13:42,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-02-24 01:13:42,611 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:13:42,611 INFO L514 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:13:42,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-02-24 01:13:42,612 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:13:42,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:13:42,612 INFO L85 PathProgramCache]: Analyzing trace with hash 396421573, now seen corresponding path program 49 times [2022-02-24 01:13:42,612 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:13:42,612 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759210753] [2022-02-24 01:13:42,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:13:42,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:13:42,616 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:13:42,617 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:13:42,618 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:13:42,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:44,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:13:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:44,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:13:44,099 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:13:44,099 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759210753] [2022-02-24 01:13:44,100 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1759210753] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:13:44,100 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:13:44,100 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-02-24 01:13:44,100 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152681985] [2022-02-24 01:13:44,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:13:44,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-24 01:13:44,100 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:13:44,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-24 01:13:44,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=2604, Unknown=0, NotChecked=0, Total=2756 [2022-02-24 01:13:44,101 INFO L87 Difference]: Start difference. First operand 256 states and 257 transitions. Second operand has 53 states, 53 states have (on average 2.0377358490566038) internal successors, (108), 52 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) [2022-02-24 01:13:47,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:13:47,189 INFO L93 Difference]: Finished difference Result 415 states and 418 transitions. [2022-02-24 01:13:47,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-02-24 01:13:47,190 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.0377358490566038) internal successors, (108), 52 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 255 [2022-02-24 01:13:47,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:13:47,191 INFO L225 Difference]: With dead ends: 415 [2022-02-24 01:13:47,191 INFO L226 Difference]: Without dead ends: 264 [2022-02-24 01:13:47,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=157, Invalid=2705, Unknown=0, NotChecked=0, Total=2862 [2022-02-24 01:13:47,192 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 178 mSDsluCounter, 2535 mSDsCounter, 0 mSdLazyCounter, 10065 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 2593 SdHoareTripleChecker+Invalid, 10181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 10065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:13:47,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 2593 Invalid, 10181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 10065 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-02-24 01:13:47,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-02-24 01:13:47,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 261. [2022-02-24 01:13:47,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 257 states have (on average 1.0077821011673151) internal successors, (259), 257 states have internal predecessors, (259), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:13:47,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 262 transitions. [2022-02-24 01:13:47,201 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 262 transitions. Word has length 255 [2022-02-24 01:13:47,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:13:47,202 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 262 transitions. [2022-02-24 01:13:47,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.0377358490566038) internal successors, (108), 52 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) [2022-02-24 01:13:47,202 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 262 transitions. [2022-02-24 01:13:47,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-02-24 01:13:47,203 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:13:47,203 INFO L514 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:13:47,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-02-24 01:13:47,203 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:13:47,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:13:47,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1216781420, now seen corresponding path program 50 times [2022-02-24 01:13:47,204 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:13:47,204 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383919403] [2022-02-24 01:13:47,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:13:47,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:13:47,208 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:13:47,209 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:13:47,209 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:13:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:48,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:13:48,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:48,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:13:48,752 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:13:48,752 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383919403] [2022-02-24 01:13:48,752 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1383919403] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:13:48,752 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:13:48,752 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-02-24 01:13:48,752 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022213905] [2022-02-24 01:13:48,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:13:48,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-24 01:13:48,753 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:13:48,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-24 01:13:48,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=2707, Unknown=0, NotChecked=0, Total=2862 [2022-02-24 01:13:48,754 INFO L87 Difference]: Start difference. First operand 261 states and 262 transitions. Second operand has 54 states, 54 states have (on average 2.037037037037037) internal successors, (110), 53 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:13:51,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:13:51,939 INFO L93 Difference]: Finished difference Result 423 states and 426 transitions. [2022-02-24 01:13:51,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-24 01:13:51,940 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.037037037037037) internal successors, (110), 53 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 260 [2022-02-24 01:13:51,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:13:51,941 INFO L225 Difference]: With dead ends: 423 [2022-02-24 01:13:51,941 INFO L226 Difference]: Without dead ends: 269 [2022-02-24 01:13:51,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=160, Invalid=2810, Unknown=0, NotChecked=0, Total=2970 [2022-02-24 01:13:51,942 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 229 mSDsluCounter, 2518 mSDsCounter, 0 mSdLazyCounter, 10399 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 2577 SdHoareTripleChecker+Invalid, 10541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 10399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:13:51,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 2577 Invalid, 10541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 10399 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-02-24 01:13:51,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-02-24 01:13:51,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 266. [2022-02-24 01:13:51,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 262 states have (on average 1.0076335877862594) internal successors, (264), 262 states have internal predecessors, (264), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:13:51,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 267 transitions. [2022-02-24 01:13:51,952 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 267 transitions. Word has length 260 [2022-02-24 01:13:51,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:13:51,952 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 267 transitions. [2022-02-24 01:13:51,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.037037037037037) internal successors, (110), 53 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:13:51,952 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 267 transitions. [2022-02-24 01:13:51,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-02-24 01:13:51,953 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:13:51,954 INFO L514 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:13:51,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-02-24 01:13:51,954 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:13:51,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:13:51,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1126778655, now seen corresponding path program 51 times [2022-02-24 01:13:51,954 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:13:51,955 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178325457] [2022-02-24 01:13:51,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:13:51,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:13:51,959 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:13:51,959 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:13:51,959 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:13:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:53,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:13:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:53,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:13:53,632 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:13:53,632 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178325457] [2022-02-24 01:13:53,632 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [178325457] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:13:53,632 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:13:53,632 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2022-02-24 01:13:53,632 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851682930] [2022-02-24 01:13:53,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:13:53,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-24 01:13:53,633 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:13:53,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-24 01:13:53,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=2812, Unknown=0, NotChecked=0, Total=2970 [2022-02-24 01:13:53,634 INFO L87 Difference]: Start difference. First operand 266 states and 267 transitions. Second operand has 55 states, 55 states have (on average 2.036363636363636) internal successors, (112), 54 states have internal predecessors, (112), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:13:56,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:13:56,938 INFO L93 Difference]: Finished difference Result 431 states and 434 transitions. [2022-02-24 01:13:56,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-24 01:13:56,938 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.036363636363636) internal successors, (112), 54 states have internal predecessors, (112), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 265 [2022-02-24 01:13:56,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:13:56,939 INFO L225 Difference]: With dead ends: 431 [2022-02-24 01:13:56,939 INFO L226 Difference]: Without dead ends: 274 [2022-02-24 01:13:56,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=163, Invalid=2917, Unknown=0, NotChecked=0, Total=3080 [2022-02-24 01:13:56,940 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 236 mSDsluCounter, 2613 mSDsCounter, 0 mSdLazyCounter, 10807 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 2673 SdHoareTripleChecker+Invalid, 10953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 10807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-02-24 01:13:56,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 2673 Invalid, 10953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 10807 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-02-24 01:13:56,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-02-24 01:13:56,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 271. [2022-02-24 01:13:56,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 267 states have (on average 1.0074906367041199) internal successors, (269), 267 states have internal predecessors, (269), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:13:56,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 272 transitions. [2022-02-24 01:13:56,950 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 272 transitions. Word has length 265 [2022-02-24 01:13:56,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:13:56,950 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 272 transitions. [2022-02-24 01:13:56,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.036363636363636) internal successors, (112), 54 states have internal predecessors, (112), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:13:56,951 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 272 transitions. [2022-02-24 01:13:56,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-02-24 01:13:56,952 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:13:56,952 INFO L514 BasicCegarLoop]: trace histogram [52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:13:56,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-02-24 01:13:56,952 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:13:56,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:13:56,952 INFO L85 PathProgramCache]: Analyzing trace with hash -577766280, now seen corresponding path program 52 times [2022-02-24 01:13:56,953 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:13:56,953 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863908059] [2022-02-24 01:13:56,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:13:56,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:13:56,957 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:13:56,957 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:13:56,957 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:13:57,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:58,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:13:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:58,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:13:58,637 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:13:58,637 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863908059] [2022-02-24 01:13:58,637 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [863908059] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:13:58,637 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:13:58,637 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2022-02-24 01:13:58,637 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519247711] [2022-02-24 01:13:58,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:13:58,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-02-24 01:13:58,638 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:13:58,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-02-24 01:13:58,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=2919, Unknown=0, NotChecked=0, Total=3080 [2022-02-24 01:13:58,638 INFO L87 Difference]: Start difference. First operand 271 states and 272 transitions. Second operand has 56 states, 56 states have (on average 2.0357142857142856) internal successors, (114), 55 states have internal predecessors, (114), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:14:02,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:14:02,119 INFO L93 Difference]: Finished difference Result 439 states and 442 transitions. [2022-02-24 01:14:02,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-24 01:14:02,120 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.0357142857142856) internal successors, (114), 55 states have internal predecessors, (114), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 270 [2022-02-24 01:14:02,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:14:02,121 INFO L225 Difference]: With dead ends: 439 [2022-02-24 01:14:02,121 INFO L226 Difference]: Without dead ends: 279 [2022-02-24 01:14:02,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=166, Invalid=3026, Unknown=0, NotChecked=0, Total=3192 [2022-02-24 01:14:02,122 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 227 mSDsluCounter, 2750 mSDsCounter, 0 mSdLazyCounter, 11247 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 2811 SdHoareTripleChecker+Invalid, 11389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 11247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-02-24 01:14:02,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 2811 Invalid, 11389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 11247 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-02-24 01:14:02,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-02-24 01:14:02,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 276. [2022-02-24 01:14:02,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 272 states have (on average 1.0073529411764706) internal successors, (274), 272 states have internal predecessors, (274), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:14:02,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 277 transitions. [2022-02-24 01:14:02,132 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 277 transitions. Word has length 270 [2022-02-24 01:14:02,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:14:02,132 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 277 transitions. [2022-02-24 01:14:02,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.0357142857142856) internal successors, (114), 55 states have internal predecessors, (114), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:14:02,132 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 277 transitions. [2022-02-24 01:14:02,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2022-02-24 01:14:02,134 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:14:02,134 INFO L514 BasicCegarLoop]: trace histogram [53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:14:02,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-02-24 01:14:02,134 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:14:02,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:14:02,134 INFO L85 PathProgramCache]: Analyzing trace with hash 208087037, now seen corresponding path program 53 times [2022-02-24 01:14:02,134 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:14:02,135 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077517137] [2022-02-24 01:14:02,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:14:02,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:14:02,139 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:14:02,139 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:14:02,139 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:14:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:14:03,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:14:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:14:03,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:14:03,811 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:14:03,811 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077517137] [2022-02-24 01:14:03,811 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1077517137] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:14:03,811 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:14:03,811 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2022-02-24 01:14:03,812 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450588832] [2022-02-24 01:14:03,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:14:03,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-02-24 01:14:03,812 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:14:03,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-02-24 01:14:03,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=3028, Unknown=0, NotChecked=0, Total=3192 [2022-02-24 01:14:03,813 INFO L87 Difference]: Start difference. First operand 276 states and 277 transitions. Second operand has 57 states, 57 states have (on average 2.0350877192982457) internal successors, (116), 56 states have internal predecessors, (116), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:14:07,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:14:07,386 INFO L93 Difference]: Finished difference Result 447 states and 450 transitions. [2022-02-24 01:14:07,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-24 01:14:07,386 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.0350877192982457) internal successors, (116), 56 states have internal predecessors, (116), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 275 [2022-02-24 01:14:07,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:14:07,387 INFO L225 Difference]: With dead ends: 447 [2022-02-24 01:14:07,387 INFO L226 Difference]: Without dead ends: 284 [2022-02-24 01:14:07,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=169, Invalid=3137, Unknown=0, NotChecked=0, Total=3306 [2022-02-24 01:14:07,388 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 172 mSDsluCounter, 3004 mSDsCounter, 0 mSdLazyCounter, 11764 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 3066 SdHoareTripleChecker+Invalid, 11879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 11764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-02-24 01:14:07,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 3066 Invalid, 11879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 11764 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-02-24 01:14:07,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-02-24 01:14:07,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 281. [2022-02-24 01:14:07,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 277 states have (on average 1.0072202166064983) internal successors, (279), 277 states have internal predecessors, (279), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:14:07,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 282 transitions. [2022-02-24 01:14:07,398 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 282 transitions. Word has length 275 [2022-02-24 01:14:07,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:14:07,398 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 282 transitions. [2022-02-24 01:14:07,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.0350877192982457) internal successors, (116), 56 states have internal predecessors, (116), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:14:07,398 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 282 transitions. [2022-02-24 01:14:07,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-02-24 01:14:07,399 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:14:07,400 INFO L514 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:14:07,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-02-24 01:14:07,400 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:14:07,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:14:07,400 INFO L85 PathProgramCache]: Analyzing trace with hash -72018596, now seen corresponding path program 54 times [2022-02-24 01:14:07,400 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:14:07,400 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595136152] [2022-02-24 01:14:07,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:14:07,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:14:07,405 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:14:07,406 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:14:07,406 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:14:07,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:14:09,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:14:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:14:09,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:14:09,129 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:14:09,129 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595136152] [2022-02-24 01:14:09,130 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1595136152] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:14:09,130 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:14:09,130 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-02-24 01:14:09,130 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962214293] [2022-02-24 01:14:09,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:14:09,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-02-24 01:14:09,130 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:14:09,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-02-24 01:14:09,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=3139, Unknown=0, NotChecked=0, Total=3306 [2022-02-24 01:14:09,131 INFO L87 Difference]: Start difference. First operand 281 states and 282 transitions. Second operand has 58 states, 58 states have (on average 2.0344827586206895) internal successors, (118), 57 states have internal predecessors, (118), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:14:12,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:14:12,792 INFO L93 Difference]: Finished difference Result 455 states and 458 transitions. [2022-02-24 01:14:12,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-24 01:14:12,792 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.0344827586206895) internal successors, (118), 57 states have internal predecessors, (118), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 280 [2022-02-24 01:14:12,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:14:12,793 INFO L225 Difference]: With dead ends: 455 [2022-02-24 01:14:12,793 INFO L226 Difference]: Without dead ends: 289 [2022-02-24 01:14:12,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=172, Invalid=3250, Unknown=0, NotChecked=0, Total=3422 [2022-02-24 01:14:12,794 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 251 mSDsluCounter, 2925 mSDsCounter, 0 mSdLazyCounter, 12088 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 2988 SdHoareTripleChecker+Invalid, 12243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 12088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-02-24 01:14:12,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 2988 Invalid, 12243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 12088 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-02-24 01:14:12,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-02-24 01:14:12,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 286. [2022-02-24 01:14:12,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 282 states have (on average 1.0070921985815602) internal successors, (284), 282 states have internal predecessors, (284), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:14:12,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 287 transitions. [2022-02-24 01:14:12,805 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 287 transitions. Word has length 280 [2022-02-24 01:14:12,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:14:12,805 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 287 transitions. [2022-02-24 01:14:12,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.0344827586206895) internal successors, (118), 57 states have internal predecessors, (118), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:14:12,805 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 287 transitions. [2022-02-24 01:14:12,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2022-02-24 01:14:12,807 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:14:12,807 INFO L514 BasicCegarLoop]: trace histogram [55, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:14:12,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-02-24 01:14:12,807 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:14:12,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:14:12,807 INFO L85 PathProgramCache]: Analyzing trace with hash -761268455, now seen corresponding path program 55 times [2022-02-24 01:14:12,807 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:14:12,807 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621644725] [2022-02-24 01:14:12,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:14:12,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:14:12,812 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:14:12,812 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:14:12,812 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:14:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:14:14,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:14:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:14:14,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:14:14,538 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:14:14,538 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621644725] [2022-02-24 01:14:14,538 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [621644725] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:14:14,538 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:14:14,538 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2022-02-24 01:14:14,538 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234351726] [2022-02-24 01:14:14,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:14:14,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-02-24 01:14:14,538 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:14:14,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-02-24 01:14:14,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=3252, Unknown=0, NotChecked=0, Total=3422 [2022-02-24 01:14:14,539 INFO L87 Difference]: Start difference. First operand 286 states and 287 transitions. Second operand has 59 states, 59 states have (on average 2.0338983050847457) internal successors, (120), 58 states have internal predecessors, (120), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:14:18,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:14:18,349 INFO L93 Difference]: Finished difference Result 463 states and 466 transitions. [2022-02-24 01:14:18,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-24 01:14:18,350 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.0338983050847457) internal successors, (120), 58 states have internal predecessors, (120), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 285 [2022-02-24 01:14:18,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:14:18,350 INFO L225 Difference]: With dead ends: 463 [2022-02-24 01:14:18,350 INFO L226 Difference]: Without dead ends: 294 [2022-02-24 01:14:18,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=175, Invalid=3365, Unknown=0, NotChecked=0, Total=3540 [2022-02-24 01:14:18,351 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 278 mSDsluCounter, 2978 mSDsCounter, 0 mSdLazyCounter, 12498 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 3042 SdHoareTripleChecker+Invalid, 12667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 12498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-02-24 01:14:18,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 3042 Invalid, 12667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 12498 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-02-24 01:14:18,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-02-24 01:14:18,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 291. [2022-02-24 01:14:18,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 287 states have (on average 1.0069686411149825) internal successors, (289), 287 states have internal predecessors, (289), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:14:18,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 292 transitions. [2022-02-24 01:14:18,362 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 292 transitions. Word has length 285 [2022-02-24 01:14:18,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:14:18,362 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 292 transitions. [2022-02-24 01:14:18,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.0338983050847457) internal successors, (120), 58 states have internal predecessors, (120), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:14:18,362 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 292 transitions. [2022-02-24 01:14:18,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2022-02-24 01:14:18,364 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:14:18,364 INFO L514 BasicCegarLoop]: trace histogram [56, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:14:18,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-02-24 01:14:18,364 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:14:18,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:14:18,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1876618816, now seen corresponding path program 56 times [2022-02-24 01:14:18,364 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:14:18,365 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [400586218] [2022-02-24 01:14:18,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:14:18,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:14:18,369 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:14:18,369 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:14:18,370 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:14:18,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:14:20,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:14:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:14:20,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:14:20,170 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:14:20,170 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [400586218] [2022-02-24 01:14:20,170 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [400586218] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:14:20,170 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:14:20,170 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2022-02-24 01:14:20,170 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104773883] [2022-02-24 01:14:20,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:14:20,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-02-24 01:14:20,171 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:14:20,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-02-24 01:14:20,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=3367, Unknown=0, NotChecked=0, Total=3540 [2022-02-24 01:14:20,172 INFO L87 Difference]: Start difference. First operand 291 states and 292 transitions. Second operand has 60 states, 60 states have (on average 2.033333333333333) internal successors, (122), 59 states have internal predecessors, (122), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:14:24,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:14:24,115 INFO L93 Difference]: Finished difference Result 471 states and 474 transitions. [2022-02-24 01:14:24,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-24 01:14:24,115 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.033333333333333) internal successors, (122), 59 states have internal predecessors, (122), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 290 [2022-02-24 01:14:24,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:14:24,116 INFO L225 Difference]: With dead ends: 471 [2022-02-24 01:14:24,116 INFO L226 Difference]: Without dead ends: 299 [2022-02-24 01:14:24,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=178, Invalid=3482, Unknown=0, NotChecked=0, Total=3660 [2022-02-24 01:14:24,117 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 235 mSDsluCounter, 3208 mSDsCounter, 0 mSdLazyCounter, 13021 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 3273 SdHoareTripleChecker+Invalid, 13169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 13021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-02-24 01:14:24,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 3273 Invalid, 13169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 13021 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-02-24 01:14:24,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-02-24 01:14:24,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 296. [2022-02-24 01:14:24,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 292 states have (on average 1.0068493150684932) internal successors, (294), 292 states have internal predecessors, (294), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:14:24,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 297 transitions. [2022-02-24 01:14:24,126 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 297 transitions. Word has length 290 [2022-02-24 01:14:24,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:14:24,126 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 297 transitions. [2022-02-24 01:14:24,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.033333333333333) internal successors, (122), 59 states have internal predecessors, (122), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:14:24,127 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 297 transitions. [2022-02-24 01:14:24,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2022-02-24 01:14:24,128 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:14:24,128 INFO L514 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:14:24,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-02-24 01:14:24,128 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:14:24,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:14:24,129 INFO L85 PathProgramCache]: Analyzing trace with hash -296819147, now seen corresponding path program 57 times [2022-02-24 01:14:24,129 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:14:24,129 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2147224484] [2022-02-24 01:14:24,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:14:24,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:14:24,134 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:14:24,134 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:14:24,134 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:14:24,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:14:25,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:14:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:14:25,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:14:25,967 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:14:25,967 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2147224484] [2022-02-24 01:14:25,967 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2147224484] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:14:25,967 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:14:25,967 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2022-02-24 01:14:25,967 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599983442] [2022-02-24 01:14:25,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:14:25,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-02-24 01:14:25,968 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:14:25,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-02-24 01:14:25,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=3484, Unknown=0, NotChecked=0, Total=3660 [2022-02-24 01:14:25,969 INFO L87 Difference]: Start difference. First operand 296 states and 297 transitions. Second operand has 61 states, 61 states have (on average 2.0327868852459017) internal successors, (124), 60 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:14:30,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:14:30,049 INFO L93 Difference]: Finished difference Result 479 states and 482 transitions. [2022-02-24 01:14:30,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-24 01:14:30,050 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.0327868852459017) internal successors, (124), 60 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 295 [2022-02-24 01:14:30,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:14:30,051 INFO L225 Difference]: With dead ends: 479 [2022-02-24 01:14:30,051 INFO L226 Difference]: Without dead ends: 304 [2022-02-24 01:14:30,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=181, Invalid=3601, Unknown=0, NotChecked=0, Total=3782 [2022-02-24 01:14:30,052 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 260 mSDsluCounter, 3270 mSDsCounter, 0 mSdLazyCounter, 13450 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 3336 SdHoareTripleChecker+Invalid, 13611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 13450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:14:30,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 3336 Invalid, 13611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 13450 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-02-24 01:14:30,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-02-24 01:14:30,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 301. [2022-02-24 01:14:30,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 297 states have (on average 1.0067340067340067) internal successors, (299), 297 states have internal predecessors, (299), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:14:30,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 302 transitions. [2022-02-24 01:14:30,062 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 302 transitions. Word has length 295 [2022-02-24 01:14:30,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:14:30,062 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 302 transitions. [2022-02-24 01:14:30,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.0327868852459017) internal successors, (124), 60 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:14:30,063 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 302 transitions. [2022-02-24 01:14:30,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-02-24 01:14:30,065 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:14:30,065 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:14:30,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-02-24 01:14:30,065 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:14:30,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:14:30,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1217149148, now seen corresponding path program 58 times [2022-02-24 01:14:30,066 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:14:30,066 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781832593] [2022-02-24 01:14:30,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:14:30,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:14:30,071 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:14:30,071 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:14:30,071 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:14:30,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:14:32,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:14:32,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:14:32,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:14:32,033 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:14:32,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781832593] [2022-02-24 01:14:32,033 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1781832593] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:14:32,033 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:14:32,033 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-02-24 01:14:32,033 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863503579] [2022-02-24 01:14:32,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:14:32,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-02-24 01:14:32,034 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:14:32,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-02-24 01:14:32,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=3603, Unknown=0, NotChecked=0, Total=3782 [2022-02-24 01:14:32,034 INFO L87 Difference]: Start difference. First operand 301 states and 302 transitions. Second operand has 62 states, 62 states have (on average 2.032258064516129) internal successors, (126), 61 states have internal predecessors, (126), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:14:36,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:14:36,266 INFO L93 Difference]: Finished difference Result 487 states and 490 transitions. [2022-02-24 01:14:36,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-24 01:14:36,266 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.032258064516129) internal successors, (126), 61 states have internal predecessors, (126), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 300 [2022-02-24 01:14:36,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:14:36,267 INFO L225 Difference]: With dead ends: 487 [2022-02-24 01:14:36,267 INFO L226 Difference]: Without dead ends: 309 [2022-02-24 01:14:36,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=184, Invalid=3722, Unknown=0, NotChecked=0, Total=3906 [2022-02-24 01:14:36,268 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 223 mSDsluCounter, 3489 mSDsCounter, 0 mSdLazyCounter, 13980 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 3556 SdHoareTripleChecker+Invalid, 14123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 13980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:14:36,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 3556 Invalid, 14123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 13980 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-02-24 01:14:36,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-02-24 01:14:36,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 306. [2022-02-24 01:14:36,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 302 states have (on average 1.0066225165562914) internal successors, (304), 302 states have internal predecessors, (304), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:14:36,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 307 transitions. [2022-02-24 01:14:36,280 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 307 transitions. Word has length 300 [2022-02-24 01:14:36,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:14:36,280 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 307 transitions. [2022-02-24 01:14:36,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.032258064516129) internal successors, (126), 61 states have internal predecessors, (126), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:14:36,280 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 307 transitions. [2022-02-24 01:14:36,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-02-24 01:14:36,281 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:14:36,282 INFO L514 BasicCegarLoop]: trace histogram [59, 59, 59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:14:36,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-02-24 01:14:36,282 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:14:36,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:14:36,282 INFO L85 PathProgramCache]: Analyzing trace with hash -322849455, now seen corresponding path program 59 times [2022-02-24 01:14:36,282 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:14:36,282 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222587811] [2022-02-24 01:14:36,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:14:36,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:14:36,287 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:14:36,287 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:14:36,287 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:14:36,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:14:38,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:14:38,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:14:38,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:14:38,212 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:14:38,213 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222587811] [2022-02-24 01:14:38,213 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1222587811] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:14:38,213 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:14:38,213 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2022-02-24 01:14:38,213 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659764731] [2022-02-24 01:14:38,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:14:38,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-02-24 01:14:38,213 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:14:38,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-02-24 01:14:38,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=3724, Unknown=0, NotChecked=0, Total=3906 [2022-02-24 01:14:38,215 INFO L87 Difference]: Start difference. First operand 306 states and 307 transitions. Second operand has 63 states, 63 states have (on average 2.0317460317460316) internal successors, (128), 62 states have internal predecessors, (128), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:14:42,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:14:42,583 INFO L93 Difference]: Finished difference Result 495 states and 498 transitions. [2022-02-24 01:14:42,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-24 01:14:42,583 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.0317460317460316) internal successors, (128), 62 states have internal predecessors, (128), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 305 [2022-02-24 01:14:42,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:14:42,584 INFO L225 Difference]: With dead ends: 495 [2022-02-24 01:14:42,584 INFO L226 Difference]: Without dead ends: 314 [2022-02-24 01:14:42,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=187, Invalid=3845, Unknown=0, NotChecked=0, Total=4032 [2022-02-24 01:14:42,585 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 256 mSDsluCounter, 3535 mSDsCounter, 0 mSdLazyCounter, 14413 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 3603 SdHoareTripleChecker+Invalid, 14573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 14413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-02-24 01:14:42,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 3603 Invalid, 14573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 14413 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-02-24 01:14:42,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-02-24 01:14:42,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 311. [2022-02-24 01:14:42,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 307 states have (on average 1.006514657980456) internal successors, (309), 307 states have internal predecessors, (309), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:14:42,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 312 transitions. [2022-02-24 01:14:42,596 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 312 transitions. Word has length 305 [2022-02-24 01:14:42,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:14:42,597 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 312 transitions. [2022-02-24 01:14:42,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.0317460317460316) internal successors, (128), 62 states have internal predecessors, (128), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:14:42,597 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 312 transitions. [2022-02-24 01:14:42,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-02-24 01:14:42,598 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:14:42,598 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:14:42,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-02-24 01:14:42,599 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:14:42,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:14:42,599 INFO L85 PathProgramCache]: Analyzing trace with hash -747511800, now seen corresponding path program 60 times [2022-02-24 01:14:42,599 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:14:42,599 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687080155] [2022-02-24 01:14:42,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:14:42,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:14:42,604 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:14:42,604 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:14:42,604 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:14:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:14:44,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:14:44,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:14:44,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:14:44,624 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:14:44,625 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687080155] [2022-02-24 01:14:44,625 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1687080155] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:14:44,625 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:14:44,625 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2022-02-24 01:14:44,625 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916908261] [2022-02-24 01:14:44,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:14:44,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-02-24 01:14:44,625 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:14:44,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-02-24 01:14:44,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=3847, Unknown=0, NotChecked=0, Total=4032 [2022-02-24 01:14:44,626 INFO L87 Difference]: Start difference. First operand 311 states and 312 transitions. Second operand has 64 states, 64 states have (on average 2.03125) internal successors, (130), 63 states have internal predecessors, (130), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:14:49,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:14:49,129 INFO L93 Difference]: Finished difference Result 503 states and 506 transitions. [2022-02-24 01:14:49,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-24 01:14:49,129 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.03125) internal successors, (130), 63 states have internal predecessors, (130), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 310 [2022-02-24 01:14:49,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:14:49,131 INFO L225 Difference]: With dead ends: 503 [2022-02-24 01:14:49,131 INFO L226 Difference]: Without dead ends: 319 [2022-02-24 01:14:49,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=190, Invalid=3970, Unknown=0, NotChecked=0, Total=4160 [2022-02-24 01:14:49,131 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 269 mSDsluCounter, 3633 mSDsCounter, 0 mSdLazyCounter, 14884 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 3702 SdHoareTripleChecker+Invalid, 15051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 14884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-02-24 01:14:49,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 3702 Invalid, 15051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 14884 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-02-24 01:14:49,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-02-24 01:14:49,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 316. [2022-02-24 01:14:49,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 312 states have (on average 1.0064102564102564) internal successors, (314), 312 states have internal predecessors, (314), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:14:49,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 317 transitions. [2022-02-24 01:14:49,139 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 317 transitions. Word has length 310 [2022-02-24 01:14:49,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:14:49,140 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 317 transitions. [2022-02-24 01:14:49,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.03125) internal successors, (130), 63 states have internal predecessors, (130), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:14:49,140 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 317 transitions. [2022-02-24 01:14:49,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2022-02-24 01:14:49,141 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:14:49,141 INFO L514 BasicCegarLoop]: trace histogram [61, 61, 61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:14:49,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-02-24 01:14:49,141 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:14:49,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:14:49,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1513741203, now seen corresponding path program 61 times [2022-02-24 01:14:49,141 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:14:49,142 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308812386] [2022-02-24 01:14:49,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:14:49,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:14:49,150 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:14:49,150 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:14:49,150 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:14:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:14:51,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:14:51,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:14:51,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:14:51,172 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:14:51,172 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308812386] [2022-02-24 01:14:51,172 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1308812386] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:14:51,172 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:14:51,172 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2022-02-24 01:14:51,172 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639264686] [2022-02-24 01:14:51,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:14:51,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-02-24 01:14:51,173 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:14:51,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-02-24 01:14:51,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=3972, Unknown=0, NotChecked=0, Total=4160 [2022-02-24 01:14:51,174 INFO L87 Difference]: Start difference. First operand 316 states and 317 transitions. Second operand has 65 states, 65 states have (on average 2.0307692307692307) internal successors, (132), 64 states have internal predecessors, (132), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:14:55,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:14:55,888 INFO L93 Difference]: Finished difference Result 511 states and 514 transitions. [2022-02-24 01:14:55,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-24 01:14:55,888 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.0307692307692307) internal successors, (132), 64 states have internal predecessors, (132), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 315 [2022-02-24 01:14:55,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:14:55,889 INFO L225 Difference]: With dead ends: 511 [2022-02-24 01:14:55,889 INFO L226 Difference]: Without dead ends: 324 [2022-02-24 01:14:55,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=193, Invalid=4097, Unknown=0, NotChecked=0, Total=4290 [2022-02-24 01:14:55,891 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 190 mSDsluCounter, 3963 mSDsCounter, 0 mSdLazyCounter, 15501 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 4033 SdHoareTripleChecker+Invalid, 15629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 15501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-02-24 01:14:55,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 4033 Invalid, 15629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 15501 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-02-24 01:14:55,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-02-24 01:14:55,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 321. [2022-02-24 01:14:55,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 317 states have (on average 1.0063091482649842) internal successors, (319), 317 states have internal predecessors, (319), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:14:55,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 322 transitions. [2022-02-24 01:14:55,904 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 322 transitions. Word has length 315 [2022-02-24 01:14:55,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:14:55,904 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 322 transitions. [2022-02-24 01:14:55,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.0307692307692307) internal successors, (132), 64 states have internal predecessors, (132), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:14:55,904 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 322 transitions. [2022-02-24 01:14:55,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-02-24 01:14:55,906 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:14:55,906 INFO L514 BasicCegarLoop]: trace histogram [62, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:14:55,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-02-24 01:14:55,906 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:14:55,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:14:55,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1404602132, now seen corresponding path program 62 times [2022-02-24 01:14:55,907 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:14:55,907 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [140994367] [2022-02-24 01:14:55,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:14:55,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:14:55,912 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:14:55,912 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:14:55,912 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:14:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:14:58,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:14:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:14:58,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:14:58,096 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:14:58,096 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [140994367] [2022-02-24 01:14:58,096 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [140994367] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:14:58,096 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:14:58,096 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2022-02-24 01:14:58,097 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304237506] [2022-02-24 01:14:58,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:14:58,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-02-24 01:14:58,097 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:14:58,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-02-24 01:14:58,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=4099, Unknown=0, NotChecked=0, Total=4290 [2022-02-24 01:14:58,098 INFO L87 Difference]: Start difference. First operand 321 states and 322 transitions. Second operand has 66 states, 66 states have (on average 2.0303030303030303) internal successors, (134), 65 states have internal predecessors, (134), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:15:02,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:15:02,900 INFO L93 Difference]: Finished difference Result 519 states and 522 transitions. [2022-02-24 01:15:02,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-02-24 01:15:02,901 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0303030303030303) internal successors, (134), 65 states have internal predecessors, (134), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 320 [2022-02-24 01:15:02,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:15:02,902 INFO L225 Difference]: With dead ends: 519 [2022-02-24 01:15:02,902 INFO L226 Difference]: Without dead ends: 329 [2022-02-24 01:15:02,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=196, Invalid=4226, Unknown=0, NotChecked=0, Total=4422 [2022-02-24 01:15:02,903 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 297 mSDsluCounter, 3830 mSDsCounter, 0 mSdLazyCounter, 15847 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 3901 SdHoareTripleChecker+Invalid, 16029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 15847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-02-24 01:15:02,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 3901 Invalid, 16029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 15847 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-02-24 01:15:02,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-02-24 01:15:02,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 326. [2022-02-24 01:15:02,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 322 states have (on average 1.0062111801242235) internal successors, (324), 322 states have internal predecessors, (324), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:15:02,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 327 transitions. [2022-02-24 01:15:02,915 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 327 transitions. Word has length 320 [2022-02-24 01:15:02,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:15:02,915 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 327 transitions. [2022-02-24 01:15:02,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.0303030303030303) internal successors, (134), 65 states have internal predecessors, (134), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:15:02,915 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 327 transitions. [2022-02-24 01:15:02,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2022-02-24 01:15:02,916 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:15:02,917 INFO L514 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:15:02,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-02-24 01:15:02,917 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:15:02,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:15:02,917 INFO L85 PathProgramCache]: Analyzing trace with hash -676727927, now seen corresponding path program 63 times [2022-02-24 01:15:02,917 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:15:02,917 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745133014] [2022-02-24 01:15:02,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:15:02,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:15:02,922 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:15:02,922 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:15:02,923 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:15:03,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:15:04,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:15:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:15:04,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:15:04,990 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:15:04,990 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745133014] [2022-02-24 01:15:04,990 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [745133014] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:15:04,990 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:15:04,990 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67 [2022-02-24 01:15:04,990 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000654830] [2022-02-24 01:15:04,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:15:04,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-02-24 01:15:04,990 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:15:04,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-02-24 01:15:04,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=4228, Unknown=0, NotChecked=0, Total=4422 [2022-02-24 01:15:04,991 INFO L87 Difference]: Start difference. First operand 326 states and 327 transitions. Second operand has 67 states, 67 states have (on average 2.029850746268657) internal successors, (136), 66 states have internal predecessors, (136), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:15:09,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:15:09,956 INFO L93 Difference]: Finished difference Result 527 states and 530 transitions. [2022-02-24 01:15:09,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-24 01:15:09,957 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.029850746268657) internal successors, (136), 66 states have internal predecessors, (136), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 325 [2022-02-24 01:15:09,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:15:09,958 INFO L225 Difference]: With dead ends: 527 [2022-02-24 01:15:09,958 INFO L226 Difference]: Without dead ends: 334 [2022-02-24 01:15:09,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=199, Invalid=4357, Unknown=0, NotChecked=0, Total=4556 [2022-02-24 01:15:09,959 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 254 mSDsluCounter, 4074 mSDsCounter, 0 mSdLazyCounter, 16426 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 4146 SdHoareTripleChecker+Invalid, 16587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 16426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-02-24 01:15:09,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 4146 Invalid, 16587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 16426 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-02-24 01:15:09,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-02-24 01:15:09,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 331. [2022-02-24 01:15:09,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 327 states have (on average 1.0061162079510704) internal successors, (329), 327 states have internal predecessors, (329), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:15:09,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 332 transitions. [2022-02-24 01:15:09,966 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 332 transitions. Word has length 325 [2022-02-24 01:15:09,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:15:09,967 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 332 transitions. [2022-02-24 01:15:09,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.029850746268657) internal successors, (136), 66 states have internal predecessors, (136), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:15:09,967 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 332 transitions. [2022-02-24 01:15:09,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2022-02-24 01:15:09,968 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:15:09,969 INFO L514 BasicCegarLoop]: trace histogram [64, 64, 64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:15:09,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-02-24 01:15:09,969 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:15:09,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:15:09,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1978061264, now seen corresponding path program 64 times [2022-02-24 01:15:09,969 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:15:09,969 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811495229] [2022-02-24 01:15:09,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:15:09,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:15:09,974 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:15:09,974 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:15:09,974 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:15:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:15:12,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:15:12,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:15:12,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:15:12,120 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:15:12,120 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811495229] [2022-02-24 01:15:12,121 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [811495229] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:15:12,121 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:15:12,121 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2022-02-24 01:15:12,121 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913493038] [2022-02-24 01:15:12,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:15:12,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-02-24 01:15:12,121 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:15:12,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-02-24 01:15:12,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=4359, Unknown=0, NotChecked=0, Total=4556 [2022-02-24 01:15:12,122 INFO L87 Difference]: Start difference. First operand 331 states and 332 transitions. Second operand has 68 states, 68 states have (on average 2.0294117647058822) internal successors, (138), 67 states have internal predecessors, (138), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:15:17,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:15:17,234 INFO L93 Difference]: Finished difference Result 535 states and 538 transitions. [2022-02-24 01:15:17,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-02-24 01:15:17,235 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.0294117647058822) internal successors, (138), 67 states have internal predecessors, (138), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 330 [2022-02-24 01:15:17,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:15:17,235 INFO L225 Difference]: With dead ends: 535 [2022-02-24 01:15:17,236 INFO L226 Difference]: Without dead ends: 339 [2022-02-24 01:15:17,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=202, Invalid=4490, Unknown=0, NotChecked=0, Total=4692 [2022-02-24 01:15:17,236 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 229 mSDsluCounter, 4275 mSDsCounter, 0 mSdLazyCounter, 16986 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 4348 SdHoareTripleChecker+Invalid, 17135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 16986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:15:17,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 4348 Invalid, 17135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 16986 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-02-24 01:15:17,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-02-24 01:15:17,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 336. [2022-02-24 01:15:17,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 332 states have (on average 1.0060240963855422) internal successors, (334), 332 states have internal predecessors, (334), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:15:17,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 337 transitions. [2022-02-24 01:15:17,248 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 337 transitions. Word has length 330 [2022-02-24 01:15:17,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:15:17,248 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 337 transitions. [2022-02-24 01:15:17,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.0294117647058822) internal successors, (138), 67 states have internal predecessors, (138), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:15:17,248 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 337 transitions. [2022-02-24 01:15:17,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2022-02-24 01:15:17,249 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:15:17,250 INFO L514 BasicCegarLoop]: trace histogram [65, 65, 65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:15:17,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-02-24 01:15:17,250 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:15:17,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:15:17,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1019551067, now seen corresponding path program 65 times [2022-02-24 01:15:17,250 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:15:17,250 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496440635] [2022-02-24 01:15:17,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:15:17,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:15:17,264 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:15:17,264 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:15:17,264 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:15:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:15:19,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:15:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:15:19,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:15:19,526 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:15:19,526 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496440635] [2022-02-24 01:15:19,526 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1496440635] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:15:19,526 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:15:19,526 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69 [2022-02-24 01:15:19,526 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140437292] [2022-02-24 01:15:19,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:15:19,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-02-24 01:15:19,527 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:15:19,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-02-24 01:15:19,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=4492, Unknown=0, NotChecked=0, Total=4692 [2022-02-24 01:15:19,528 INFO L87 Difference]: Start difference. First operand 336 states and 337 transitions. Second operand has 69 states, 69 states have (on average 2.028985507246377) internal successors, (140), 68 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:15:24,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:15:24,801 INFO L93 Difference]: Finished difference Result 543 states and 546 transitions. [2022-02-24 01:15:24,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-02-24 01:15:24,801 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.028985507246377) internal successors, (140), 68 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 335 [2022-02-24 01:15:24,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:15:24,802 INFO L225 Difference]: With dead ends: 543 [2022-02-24 01:15:24,802 INFO L226 Difference]: Without dead ends: 344 [2022-02-24 01:15:24,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=205, Invalid=4625, Unknown=0, NotChecked=0, Total=4830 [2022-02-24 01:15:24,803 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 280 mSDsluCounter, 4288 mSDsCounter, 0 mSdLazyCounter, 17440 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 4362 SdHoareTripleChecker+Invalid, 17615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 17440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:15:24,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 4362 Invalid, 17615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 17440 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-02-24 01:15:24,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-02-24 01:15:24,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 341. [2022-02-24 01:15:24,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 337 states have (on average 1.0059347181008902) internal successors, (339), 337 states have internal predecessors, (339), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:15:24,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 342 transitions. [2022-02-24 01:15:24,815 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 342 transitions. Word has length 335 [2022-02-24 01:15:24,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:15:24,816 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 342 transitions. [2022-02-24 01:15:24,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.028985507246377) internal successors, (140), 68 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:15:24,816 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 342 transitions. [2022-02-24 01:15:24,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2022-02-24 01:15:24,817 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:15:24,817 INFO L514 BasicCegarLoop]: trace histogram [66, 66, 66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:15:24,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-02-24 01:15:24,818 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:15:24,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:15:24,818 INFO L85 PathProgramCache]: Analyzing trace with hash 331492020, now seen corresponding path program 66 times [2022-02-24 01:15:24,818 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:15:24,818 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638716916] [2022-02-24 01:15:24,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:15:24,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:15:24,824 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:15:24,824 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:15:24,824 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:15:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:15:27,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:15:27,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:15:27,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:15:27,279 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:15:27,279 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638716916] [2022-02-24 01:15:27,279 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [638716916] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:15:27,279 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:15:27,279 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2022-02-24 01:15:27,279 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56169976] [2022-02-24 01:15:27,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:15:27,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-02-24 01:15:27,280 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:15:27,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-02-24 01:15:27,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=4627, Unknown=0, NotChecked=0, Total=4830 [2022-02-24 01:15:27,281 INFO L87 Difference]: Start difference. First operand 341 states and 342 transitions. Second operand has 70 states, 70 states have (on average 2.0285714285714285) internal successors, (142), 69 states have internal predecessors, (142), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:15:32,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:15:32,722 INFO L93 Difference]: Finished difference Result 551 states and 554 transitions. [2022-02-24 01:15:32,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-02-24 01:15:32,722 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.0285714285714285) internal successors, (142), 69 states have internal predecessors, (142), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 340 [2022-02-24 01:15:32,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:15:32,723 INFO L225 Difference]: With dead ends: 551 [2022-02-24 01:15:32,723 INFO L226 Difference]: Without dead ends: 349 [2022-02-24 01:15:32,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=208, Invalid=4762, Unknown=0, NotChecked=0, Total=4970 [2022-02-24 01:15:32,724 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 247 mSDsluCounter, 4513 mSDsCounter, 0 mSdLazyCounter, 18028 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 4588 SdHoareTripleChecker+Invalid, 18187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 18028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-02-24 01:15:32,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 4588 Invalid, 18187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 18028 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-02-24 01:15:32,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-02-24 01:15:32,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 346. [2022-02-24 01:15:32,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 342 states have (on average 1.0058479532163742) internal successors, (344), 342 states have internal predecessors, (344), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:15:32,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 347 transitions. [2022-02-24 01:15:32,736 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 347 transitions. Word has length 340 [2022-02-24 01:15:32,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:15:32,736 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 347 transitions. [2022-02-24 01:15:32,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 2.0285714285714285) internal successors, (142), 69 states have internal predecessors, (142), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:15:32,736 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 347 transitions. [2022-02-24 01:15:32,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-02-24 01:15:32,738 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:15:32,738 INFO L514 BasicCegarLoop]: trace histogram [67, 67, 67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:15:32,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-02-24 01:15:32,738 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:15:32,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:15:32,739 INFO L85 PathProgramCache]: Analyzing trace with hash -943279679, now seen corresponding path program 67 times [2022-02-24 01:15:32,739 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:15:32,739 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231479527] [2022-02-24 01:15:32,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:15:32,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:15:32,744 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:15:32,744 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:15:32,744 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:15:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:15:35,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:15:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:15:35,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:15:35,082 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:15:35,082 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231479527] [2022-02-24 01:15:35,082 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1231479527] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:15:35,082 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:15:35,082 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2022-02-24 01:15:35,082 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492238091] [2022-02-24 01:15:35,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:15:35,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-02-24 01:15:35,083 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:15:35,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-02-24 01:15:35,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=4764, Unknown=0, NotChecked=0, Total=4970 [2022-02-24 01:15:35,084 INFO L87 Difference]: Start difference. First operand 346 states and 347 transitions. Second operand has 71 states, 71 states have (on average 2.028169014084507) internal successors, (144), 70 states have internal predecessors, (144), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:15:40,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:15:40,665 INFO L93 Difference]: Finished difference Result 559 states and 562 transitions. [2022-02-24 01:15:40,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-24 01:15:40,666 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.028169014084507) internal successors, (144), 70 states have internal predecessors, (144), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 345 [2022-02-24 01:15:40,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:15:40,667 INFO L225 Difference]: With dead ends: 559 [2022-02-24 01:15:40,667 INFO L226 Difference]: Without dead ends: 354 [2022-02-24 01:15:40,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=211, Invalid=4901, Unknown=0, NotChecked=0, Total=5112 [2022-02-24 01:15:40,671 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 282 mSDsluCounter, 4570 mSDsCounter, 0 mSdLazyCounter, 18522 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 4646 SdHoareTripleChecker+Invalid, 18699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 18522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-02-24 01:15:40,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 4646 Invalid, 18699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 18522 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-02-24 01:15:40,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-02-24 01:15:40,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 351. [2022-02-24 01:15:40,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 347 states have (on average 1.005763688760807) internal successors, (349), 347 states have internal predecessors, (349), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:15:40,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 352 transitions. [2022-02-24 01:15:40,683 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 352 transitions. Word has length 345 [2022-02-24 01:15:40,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:15:40,684 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 352 transitions. [2022-02-24 01:15:40,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.028169014084507) internal successors, (144), 70 states have internal predecessors, (144), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:15:40,684 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 352 transitions. [2022-02-24 01:15:40,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2022-02-24 01:15:40,685 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:15:40,686 INFO L514 BasicCegarLoop]: trace histogram [68, 68, 68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:15:40,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-02-24 01:15:40,686 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:15:40,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:15:40,686 INFO L85 PathProgramCache]: Analyzing trace with hash 2093728664, now seen corresponding path program 68 times [2022-02-24 01:15:40,686 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:15:40,686 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437247112] [2022-02-24 01:15:40,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:15:40,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:15:40,692 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:15:40,692 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:15:40,692 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:15:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:15:43,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:15:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:15:43,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:15:43,179 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:15:43,179 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437247112] [2022-02-24 01:15:43,179 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [437247112] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:15:43,179 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:15:43,179 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2022-02-24 01:15:43,179 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146839092] [2022-02-24 01:15:43,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:15:43,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-02-24 01:15:43,180 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:15:43,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-02-24 01:15:43,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=4903, Unknown=0, NotChecked=0, Total=5112 [2022-02-24 01:15:43,181 INFO L87 Difference]: Start difference. First operand 351 states and 352 transitions. Second operand has 72 states, 72 states have (on average 2.0277777777777777) internal successors, (146), 71 states have internal predecessors, (146), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:15:48,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:15:48,897 INFO L93 Difference]: Finished difference Result 567 states and 570 transitions. [2022-02-24 01:15:48,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-24 01:15:48,897 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.0277777777777777) internal successors, (146), 71 states have internal predecessors, (146), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 350 [2022-02-24 01:15:48,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:15:48,898 INFO L225 Difference]: With dead ends: 567 [2022-02-24 01:15:48,898 INFO L226 Difference]: Without dead ends: 359 [2022-02-24 01:15:48,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=214, Invalid=5042, Unknown=0, NotChecked=0, Total=5256 [2022-02-24 01:15:48,899 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 343 mSDsluCounter, 4564 mSDsCounter, 0 mSdLazyCounter, 18985 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 4641 SdHoareTripleChecker+Invalid, 19193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 18985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-02-24 01:15:48,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 4641 Invalid, 19193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 18985 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-02-24 01:15:48,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-02-24 01:15:48,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 356. [2022-02-24 01:15:48,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 352 states have (on average 1.0056818181818181) internal successors, (354), 352 states have internal predecessors, (354), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:15:48,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 357 transitions. [2022-02-24 01:15:48,912 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 357 transitions. Word has length 350 [2022-02-24 01:15:48,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:15:48,912 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 357 transitions. [2022-02-24 01:15:48,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.0277777777777777) internal successors, (146), 71 states have internal predecessors, (146), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:15:48,912 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 357 transitions. [2022-02-24 01:15:48,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2022-02-24 01:15:48,914 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:15:48,914 INFO L514 BasicCegarLoop]: trace histogram [69, 69, 69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:15:48,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-02-24 01:15:48,914 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:15:48,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:15:48,915 INFO L85 PathProgramCache]: Analyzing trace with hash -14999331, now seen corresponding path program 69 times [2022-02-24 01:15:48,915 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:15:48,915 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684404163] [2022-02-24 01:15:48,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:15:48,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:15:48,920 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:15:48,920 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:15:48,920 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:15:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:15:51,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:15:51,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:15:51,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:15:51,396 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:15:51,396 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684404163] [2022-02-24 01:15:51,396 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [684404163] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:15:51,396 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:15:51,396 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73 [2022-02-24 01:15:51,397 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510874297] [2022-02-24 01:15:51,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:15:51,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-02-24 01:15:51,397 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:15:51,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-02-24 01:15:51,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=5044, Unknown=0, NotChecked=0, Total=5256 [2022-02-24 01:15:51,398 INFO L87 Difference]: Start difference. First operand 356 states and 357 transitions. Second operand has 73 states, 73 states have (on average 2.0273972602739727) internal successors, (148), 72 states have internal predecessors, (148), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:15:57,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:15:57,290 INFO L93 Difference]: Finished difference Result 575 states and 578 transitions. [2022-02-24 01:15:57,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-24 01:15:57,290 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.0273972602739727) internal successors, (148), 72 states have internal predecessors, (148), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 355 [2022-02-24 01:15:57,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:15:57,291 INFO L225 Difference]: With dead ends: 575 [2022-02-24 01:15:57,292 INFO L226 Difference]: Without dead ends: 364 [2022-02-24 01:15:57,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=217, Invalid=5185, Unknown=0, NotChecked=0, Total=5402 [2022-02-24 01:15:57,293 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 326 mSDsluCounter, 4755 mSDsCounter, 0 mSdLazyCounter, 19573 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 4833 SdHoareTripleChecker+Invalid, 19773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 19573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-02-24 01:15:57,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 4833 Invalid, 19773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 19573 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-02-24 01:15:57,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-02-24 01:15:57,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 361. [2022-02-24 01:15:57,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 357 states have (on average 1.0056022408963585) internal successors, (359), 357 states have internal predecessors, (359), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:15:57,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 362 transitions. [2022-02-24 01:15:57,304 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 362 transitions. Word has length 355 [2022-02-24 01:15:57,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:15:57,304 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 362 transitions. [2022-02-24 01:15:57,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.0273972602739727) internal successors, (148), 72 states have internal predecessors, (148), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:15:57,304 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 362 transitions. [2022-02-24 01:15:57,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2022-02-24 01:15:57,306 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:15:57,306 INFO L514 BasicCegarLoop]: trace histogram [70, 70, 70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:15:57,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-02-24 01:15:57,306 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:15:57,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:15:57,306 INFO L85 PathProgramCache]: Analyzing trace with hash 527817852, now seen corresponding path program 70 times [2022-02-24 01:15:57,306 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:15:57,306 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586924412] [2022-02-24 01:15:57,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:15:57,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:15:57,311 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:15:57,311 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:15:57,311 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:15:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:15:59,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:15:59,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:15:59,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:15:59,909 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:15:59,909 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586924412] [2022-02-24 01:15:59,909 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1586924412] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:15:59,909 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:15:59,909 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74 [2022-02-24 01:15:59,910 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556468515] [2022-02-24 01:15:59,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:15:59,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-02-24 01:15:59,910 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:15:59,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-02-24 01:15:59,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=5187, Unknown=0, NotChecked=0, Total=5402 [2022-02-24 01:15:59,911 INFO L87 Difference]: Start difference. First operand 361 states and 362 transitions. Second operand has 74 states, 74 states have (on average 2.027027027027027) internal successors, (150), 73 states have internal predecessors, (150), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:16:06,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:16:06,003 INFO L93 Difference]: Finished difference Result 583 states and 586 transitions. [2022-02-24 01:16:06,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-02-24 01:16:06,003 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.027027027027027) internal successors, (150), 73 states have internal predecessors, (150), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 360 [2022-02-24 01:16:06,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:16:06,008 INFO L225 Difference]: With dead ends: 583 [2022-02-24 01:16:06,008 INFO L226 Difference]: Without dead ends: 369 [2022-02-24 01:16:06,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=220, Invalid=5330, Unknown=0, NotChecked=0, Total=5550 [2022-02-24 01:16:06,009 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 229 mSDsluCounter, 5148 mSDsCounter, 0 mSdLazyCounter, 20289 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 5227 SdHoareTripleChecker+Invalid, 20441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 20289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-02-24 01:16:06,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 5227 Invalid, 20441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 20289 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-02-24 01:16:06,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-02-24 01:16:06,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 366. [2022-02-24 01:16:06,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 362 states have (on average 1.0055248618784531) internal successors, (364), 362 states have internal predecessors, (364), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:16:06,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 367 transitions. [2022-02-24 01:16:06,021 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 367 transitions. Word has length 360 [2022-02-24 01:16:06,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:16:06,022 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 367 transitions. [2022-02-24 01:16:06,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.027027027027027) internal successors, (150), 73 states have internal predecessors, (150), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:16:06,022 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 367 transitions. [2022-02-24 01:16:06,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2022-02-24 01:16:06,023 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:16:06,023 INFO L514 BasicCegarLoop]: trace histogram [71, 71, 71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:16:06,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-02-24 01:16:06,023 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:16:06,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:16:06,023 INFO L85 PathProgramCache]: Analyzing trace with hash -645533703, now seen corresponding path program 71 times [2022-02-24 01:16:06,024 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:16:06,024 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679980998] [2022-02-24 01:16:06,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:16:06,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:16:06,029 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:16:06,029 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:16:06,029 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:16:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:16:08,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:16:08,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:16:08,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:16:08,614 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:16:08,614 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679980998] [2022-02-24 01:16:08,614 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [679980998] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:16:08,614 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:16:08,614 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75 [2022-02-24 01:16:08,614 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658802481] [2022-02-24 01:16:08,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:16:08,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-02-24 01:16:08,615 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:16:08,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-02-24 01:16:08,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=5332, Unknown=0, NotChecked=0, Total=5550 [2022-02-24 01:16:08,616 INFO L87 Difference]: Start difference. First operand 366 states and 367 transitions. Second operand has 75 states, 75 states have (on average 2.026666666666667) internal successors, (152), 74 states have internal predecessors, (152), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:16:14,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:16:14,879 INFO L93 Difference]: Finished difference Result 591 states and 594 transitions. [2022-02-24 01:16:14,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-24 01:16:14,879 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.026666666666667) internal successors, (152), 74 states have internal predecessors, (152), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 365 [2022-02-24 01:16:14,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:16:14,880 INFO L225 Difference]: With dead ends: 591 [2022-02-24 01:16:14,880 INFO L226 Difference]: Without dead ends: 374 [2022-02-24 01:16:14,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=223, Invalid=5477, Unknown=0, NotChecked=0, Total=5700 [2022-02-24 01:16:14,881 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 260 mSDsluCounter, 5223 mSDsCounter, 0 mSdLazyCounter, 20821 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 5303 SdHoareTripleChecker+Invalid, 20989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 20821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:16:14,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 5303 Invalid, 20989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 20821 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-02-24 01:16:14,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-02-24 01:16:14,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 371. [2022-02-24 01:16:14,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 367 states have (on average 1.005449591280654) internal successors, (369), 367 states have internal predecessors, (369), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:16:14,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 372 transitions. [2022-02-24 01:16:14,890 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 372 transitions. Word has length 365 [2022-02-24 01:16:14,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:16:14,891 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 372 transitions. [2022-02-24 01:16:14,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 2.026666666666667) internal successors, (152), 74 states have internal predecessors, (152), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:16:14,891 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 372 transitions. [2022-02-24 01:16:14,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2022-02-24 01:16:14,892 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:16:14,892 INFO L514 BasicCegarLoop]: trace histogram [72, 72, 72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:16:14,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-02-24 01:16:14,892 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:16:14,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:16:14,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1169339744, now seen corresponding path program 72 times [2022-02-24 01:16:14,893 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:16:14,893 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885855875] [2022-02-24 01:16:14,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:16:14,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:16:14,897 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:16:14,897 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:16:14,897 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:16:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:16:17,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:16:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:16:17,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:16:17,533 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:16:17,533 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885855875] [2022-02-24 01:16:17,534 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1885855875] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:16:17,534 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:16:17,534 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76 [2022-02-24 01:16:17,534 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120805584] [2022-02-24 01:16:17,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:16:17,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-02-24 01:16:17,534 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:16:17,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-02-24 01:16:17,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=5479, Unknown=0, NotChecked=0, Total=5700 [2022-02-24 01:16:17,535 INFO L87 Difference]: Start difference. First operand 371 states and 372 transitions. Second operand has 76 states, 76 states have (on average 2.026315789473684) internal successors, (154), 75 states have internal predecessors, (154), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:16:23,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:16:23,977 INFO L93 Difference]: Finished difference Result 599 states and 602 transitions. [2022-02-24 01:16:23,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-02-24 01:16:23,978 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.026315789473684) internal successors, (154), 75 states have internal predecessors, (154), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 370 [2022-02-24 01:16:23,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:16:23,979 INFO L225 Difference]: With dead ends: 599 [2022-02-24 01:16:23,979 INFO L226 Difference]: Without dead ends: 379 [2022-02-24 01:16:23,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=226, Invalid=5626, Unknown=0, NotChecked=0, Total=5852 [2022-02-24 01:16:23,979 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 273 mSDsluCounter, 5345 mSDsCounter, 0 mSdLazyCounter, 21388 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 5426 SdHoareTripleChecker+Invalid, 21563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 21388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-02-24 01:16:23,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 5426 Invalid, 21563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 21388 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-02-24 01:16:23,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-02-24 01:16:23,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 376. [2022-02-24 01:16:23,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 372 states have (on average 1.0053763440860215) internal successors, (374), 372 states have internal predecessors, (374), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:16:23,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 377 transitions. [2022-02-24 01:16:23,988 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 377 transitions. Word has length 370 [2022-02-24 01:16:23,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:16:23,988 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 377 transitions. [2022-02-24 01:16:23,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 2.026315789473684) internal successors, (154), 75 states have internal predecessors, (154), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:16:23,988 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 377 transitions. [2022-02-24 01:16:23,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2022-02-24 01:16:23,990 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:16:23,990 INFO L514 BasicCegarLoop]: trace histogram [73, 73, 73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:16:23,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-02-24 01:16:23,990 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:16:23,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:16:23,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1177231595, now seen corresponding path program 73 times [2022-02-24 01:16:23,991 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:16:23,991 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875002213] [2022-02-24 01:16:23,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:16:23,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:16:23,995 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:16:23,995 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:16:23,995 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:16:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:16:26,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:16:26,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:16:26,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:16:26,756 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:16:26,756 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875002213] [2022-02-24 01:16:26,756 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [875002213] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:16:26,756 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:16:26,756 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77 [2022-02-24 01:16:26,756 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612650955] [2022-02-24 01:16:26,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:16:26,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-02-24 01:16:26,757 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:16:26,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-02-24 01:16:26,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=5628, Unknown=0, NotChecked=0, Total=5852 [2022-02-24 01:16:26,757 INFO L87 Difference]: Start difference. First operand 376 states and 377 transitions. Second operand has 77 states, 77 states have (on average 2.0259740259740258) internal successors, (156), 76 states have internal predecessors, (156), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:16:33,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:16:33,372 INFO L93 Difference]: Finished difference Result 607 states and 610 transitions. [2022-02-24 01:16:33,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-02-24 01:16:33,372 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.0259740259740258) internal successors, (156), 76 states have internal predecessors, (156), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 375 [2022-02-24 01:16:33,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:16:33,374 INFO L225 Difference]: With dead ends: 607 [2022-02-24 01:16:33,374 INFO L226 Difference]: Without dead ends: 384 [2022-02-24 01:16:33,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=229, Invalid=5777, Unknown=0, NotChecked=0, Total=6006 [2022-02-24 01:16:33,375 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 250 mSDsluCounter, 5559 mSDsCounter, 0 mSdLazyCounter, 22017 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 5641 SdHoareTripleChecker+Invalid, 22181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 22017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-02-24 01:16:33,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 5641 Invalid, 22181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 22017 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-02-24 01:16:33,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-02-24 01:16:33,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 381. [2022-02-24 01:16:33,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 377 states have (on average 1.0053050397877985) internal successors, (379), 377 states have internal predecessors, (379), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:16:33,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 382 transitions. [2022-02-24 01:16:33,384 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 382 transitions. Word has length 375 [2022-02-24 01:16:33,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:16:33,384 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 382 transitions. [2022-02-24 01:16:33,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.0259740259740258) internal successors, (156), 76 states have internal predecessors, (156), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:16:33,384 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 382 transitions. [2022-02-24 01:16:33,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2022-02-24 01:16:33,386 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:16:33,386 INFO L514 BasicCegarLoop]: trace histogram [74, 74, 74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:16:33,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-02-24 01:16:33,387 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:16:33,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:16:33,387 INFO L85 PathProgramCache]: Analyzing trace with hash 2029293124, now seen corresponding path program 74 times [2022-02-24 01:16:33,387 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:16:33,387 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598192982] [2022-02-24 01:16:33,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:16:33,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:16:33,393 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:16:33,394 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:16:33,394 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:16:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:16:36,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:16:36,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:16:36,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:16:36,530 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:16:36,530 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598192982] [2022-02-24 01:16:36,530 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1598192982] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:16:36,530 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:16:36,530 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78 [2022-02-24 01:16:36,530 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850287360] [2022-02-24 01:16:36,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:16:36,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-02-24 01:16:36,530 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:16:36,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-02-24 01:16:36,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=5779, Unknown=0, NotChecked=0, Total=6006 [2022-02-24 01:16:36,532 INFO L87 Difference]: Start difference. First operand 381 states and 382 transitions. Second operand has 78 states, 78 states have (on average 2.0256410256410255) internal successors, (158), 77 states have internal predecessors, (158), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:16:43,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:16:43,521 INFO L93 Difference]: Finished difference Result 615 states and 618 transitions. [2022-02-24 01:16:43,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-24 01:16:43,521 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 2.0256410256410255) internal successors, (158), 77 states have internal predecessors, (158), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 380 [2022-02-24 01:16:43,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:16:43,523 INFO L225 Difference]: With dead ends: 615 [2022-02-24 01:16:43,523 INFO L226 Difference]: Without dead ends: 389 [2022-02-24 01:16:43,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=232, Invalid=5930, Unknown=0, NotChecked=0, Total=6162 [2022-02-24 01:16:43,523 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 241 mSDsluCounter, 5740 mSDsCounter, 0 mSdLazyCounter, 22633 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 5823 SdHoareTripleChecker+Invalid, 22793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 22633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-02-24 01:16:43,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 5823 Invalid, 22793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 22633 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-02-24 01:16:43,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-02-24 01:16:43,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 386. [2022-02-24 01:16:43,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 382 states have (on average 1.0052356020942408) internal successors, (384), 382 states have internal predecessors, (384), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:16:43,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 387 transitions. [2022-02-24 01:16:43,533 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 387 transitions. Word has length 380 [2022-02-24 01:16:43,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:16:43,533 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 387 transitions. [2022-02-24 01:16:43,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 2.0256410256410255) internal successors, (158), 77 states have internal predecessors, (158), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:16:43,533 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 387 transitions. [2022-02-24 01:16:43,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2022-02-24 01:16:43,535 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:16:43,535 INFO L514 BasicCegarLoop]: trace histogram [75, 75, 75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:16:43,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-02-24 01:16:43,535 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:16:43,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:16:43,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1856655823, now seen corresponding path program 75 times [2022-02-24 01:16:43,535 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:16:43,535 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714161458] [2022-02-24 01:16:43,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:16:43,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:16:43,541 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:16:43,541 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:16:43,541 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:16:44,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:16:46,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:16:46,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:16:46,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:16:46,514 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:16:46,514 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714161458] [2022-02-24 01:16:46,515 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [714161458] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:16:46,515 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:16:46,515 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [79] imperfect sequences [] total 79 [2022-02-24 01:16:46,515 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632715334] [2022-02-24 01:16:46,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:16:46,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-02-24 01:16:46,515 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:16:46,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-02-24 01:16:46,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=5932, Unknown=0, NotChecked=0, Total=6162 [2022-02-24 01:16:46,517 INFO L87 Difference]: Start difference. First operand 386 states and 387 transitions. Second operand has 79 states, 79 states have (on average 2.0253164556962027) internal successors, (160), 78 states have internal predecessors, (160), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:16:53,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:16:53,763 INFO L93 Difference]: Finished difference Result 623 states and 626 transitions. [2022-02-24 01:16:53,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-02-24 01:16:53,763 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.0253164556962027) internal successors, (160), 78 states have internal predecessors, (160), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 385 [2022-02-24 01:16:53,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:16:53,764 INFO L225 Difference]: With dead ends: 623 [2022-02-24 01:16:53,764 INFO L226 Difference]: Without dead ends: 394 [2022-02-24 01:16:53,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=235, Invalid=6085, Unknown=0, NotChecked=0, Total=6320 [2022-02-24 01:16:53,765 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 238 mSDsluCounter, 5908 mSDsCounter, 0 mSdLazyCounter, 23248 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 5992 SdHoareTripleChecker+Invalid, 23407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 23248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:16:53,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 5992 Invalid, 23407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 23248 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-02-24 01:16:53,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-02-24 01:16:53,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 391. [2022-02-24 01:16:53,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 387 states have (on average 1.0051679586563307) internal successors, (389), 387 states have internal predecessors, (389), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:16:53,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 392 transitions. [2022-02-24 01:16:53,775 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 392 transitions. Word has length 385 [2022-02-24 01:16:53,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:16:53,775 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 392 transitions. [2022-02-24 01:16:53,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 2.0253164556962027) internal successors, (160), 78 states have internal predecessors, (160), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:16:53,776 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 392 transitions. [2022-02-24 01:16:53,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2022-02-24 01:16:53,777 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:16:53,777 INFO L514 BasicCegarLoop]: trace histogram [76, 76, 76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:16:53,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-02-24 01:16:53,777 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:16:53,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:16:53,777 INFO L85 PathProgramCache]: Analyzing trace with hash -433215704, now seen corresponding path program 76 times [2022-02-24 01:16:53,778 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:16:53,778 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421798990] [2022-02-24 01:16:53,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:16:53,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:16:53,782 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:16:53,782 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:16:53,782 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:16:54,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:16:56,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:16:56,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:16:56,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:16:56,813 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:16:56,813 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421798990] [2022-02-24 01:16:56,813 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [421798990] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:16:56,813 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:16:56,813 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80 [2022-02-24 01:16:56,813 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94385519] [2022-02-24 01:16:56,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:16:56,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-02-24 01:16:56,814 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:16:56,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-02-24 01:16:56,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=6087, Unknown=0, NotChecked=0, Total=6320 [2022-02-24 01:16:56,815 INFO L87 Difference]: Start difference. First operand 391 states and 392 transitions. Second operand has 80 states, 80 states have (on average 2.025) internal successors, (162), 79 states have internal predecessors, (162), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:17:04,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:17:04,075 INFO L93 Difference]: Finished difference Result 631 states and 634 transitions. [2022-02-24 01:17:04,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-02-24 01:17:04,076 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.025) internal successors, (162), 79 states have internal predecessors, (162), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 390 [2022-02-24 01:17:04,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:17:04,077 INFO L225 Difference]: With dead ends: 631 [2022-02-24 01:17:04,077 INFO L226 Difference]: Without dead ends: 399 [2022-02-24 01:17:04,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=238, Invalid=6242, Unknown=0, NotChecked=0, Total=6480 [2022-02-24 01:17:04,078 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 303 mSDsluCounter, 5908 mSDsCounter, 0 mSdLazyCounter, 23769 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 5993 SdHoareTripleChecker+Invalid, 23961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 23769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:17:04,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 5993 Invalid, 23961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 23769 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-02-24 01:17:04,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-02-24 01:17:04,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 396. [2022-02-24 01:17:04,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 392 states have (on average 1.0051020408163265) internal successors, (394), 392 states have internal predecessors, (394), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:17:04,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 397 transitions. [2022-02-24 01:17:04,087 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 397 transitions. Word has length 390 [2022-02-24 01:17:04,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:17:04,087 INFO L470 AbstractCegarLoop]: Abstraction has 396 states and 397 transitions. [2022-02-24 01:17:04,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 2.025) internal successors, (162), 79 states have internal predecessors, (162), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:17:04,087 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 397 transitions. [2022-02-24 01:17:04,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2022-02-24 01:17:04,089 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:17:04,089 INFO L514 BasicCegarLoop]: trace histogram [77, 77, 77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:17:04,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-02-24 01:17:04,089 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:17:04,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:17:04,089 INFO L85 PathProgramCache]: Analyzing trace with hash 2077629773, now seen corresponding path program 77 times [2022-02-24 01:17:04,089 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:17:04,089 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480176741] [2022-02-24 01:17:04,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:17:04,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:17:04,094 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:17:04,094 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:17:04,094 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:17:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:17:07,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:17:07,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:17:07,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:17:07,078 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:17:07,079 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480176741] [2022-02-24 01:17:07,079 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [480176741] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:17:07,079 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:17:07,079 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [81] imperfect sequences [] total 81 [2022-02-24 01:17:07,079 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822146548] [2022-02-24 01:17:07,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:17:07,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-02-24 01:17:07,079 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:17:07,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-02-24 01:17:07,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=6244, Unknown=0, NotChecked=0, Total=6480 [2022-02-24 01:17:07,080 INFO L87 Difference]: Start difference. First operand 396 states and 397 transitions. Second operand has 81 states, 81 states have (on average 2.0246913580246915) internal successors, (164), 80 states have internal predecessors, (164), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:17:14,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:17:14,390 INFO L93 Difference]: Finished difference Result 639 states and 642 transitions. [2022-02-24 01:17:14,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-02-24 01:17:14,391 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.0246913580246915) internal successors, (164), 80 states have internal predecessors, (164), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 395 [2022-02-24 01:17:14,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:17:14,392 INFO L225 Difference]: With dead ends: 639 [2022-02-24 01:17:14,392 INFO L226 Difference]: Without dead ends: 404 [2022-02-24 01:17:14,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=241, Invalid=6401, Unknown=0, NotChecked=0, Total=6642 [2022-02-24 01:17:14,393 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 340 mSDsluCounter, 5980 mSDsCounter, 0 mSdLazyCounter, 24340 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 6066 SdHoareTripleChecker+Invalid, 24551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 24340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:17:14,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 6066 Invalid, 24551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 24340 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-02-24 01:17:14,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-02-24 01:17:14,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 401. [2022-02-24 01:17:14,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 397 states have (on average 1.0050377833753148) internal successors, (399), 397 states have internal predecessors, (399), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:17:14,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 402 transitions. [2022-02-24 01:17:14,402 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 402 transitions. Word has length 395 [2022-02-24 01:17:14,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:17:14,402 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 402 transitions. [2022-02-24 01:17:14,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 2.0246913580246915) internal successors, (164), 80 states have internal predecessors, (164), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:17:14,403 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 402 transitions. [2022-02-24 01:17:14,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2022-02-24 01:17:14,405 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:17:14,405 INFO L514 BasicCegarLoop]: trace histogram [78, 78, 78, 78, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:17:14,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-02-24 01:17:14,405 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:17:14,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:17:14,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1043316724, now seen corresponding path program 78 times [2022-02-24 01:17:14,405 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:17:14,406 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648338431] [2022-02-24 01:17:14,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:17:14,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:17:14,412 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:17:14,412 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:17:14,412 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:17:14,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:17:17,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:17:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:17:17,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:17:17,483 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:17:17,484 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648338431] [2022-02-24 01:17:17,484 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1648338431] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:17:17,484 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:17:17,484 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [82] imperfect sequences [] total 82 [2022-02-24 01:17:17,484 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185899753] [2022-02-24 01:17:17,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:17:17,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-02-24 01:17:17,484 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:17:17,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-02-24 01:17:17,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=6403, Unknown=0, NotChecked=0, Total=6642 [2022-02-24 01:17:17,485 INFO L87 Difference]: Start difference. First operand 401 states and 402 transitions. Second operand has 82 states, 82 states have (on average 2.024390243902439) internal successors, (166), 81 states have internal predecessors, (166), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:17:24,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:17:24,986 INFO L93 Difference]: Finished difference Result 647 states and 650 transitions. [2022-02-24 01:17:24,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-02-24 01:17:24,986 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 2.024390243902439) internal successors, (166), 81 states have internal predecessors, (166), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 400 [2022-02-24 01:17:24,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:17:24,987 INFO L225 Difference]: With dead ends: 647 [2022-02-24 01:17:24,988 INFO L226 Difference]: Without dead ends: 409 [2022-02-24 01:17:24,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=244, Invalid=6562, Unknown=0, NotChecked=0, Total=6806 [2022-02-24 01:17:24,989 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 275 mSDsluCounter, 6309 mSDsCounter, 0 mSdLazyCounter, 25072 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 6396 SdHoareTripleChecker+Invalid, 25251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 25072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-02-24 01:17:24,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 6396 Invalid, 25251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 25072 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-02-24 01:17:24,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-02-24 01:17:24,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 406. [2022-02-24 01:17:24,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 402 states have (on average 1.0049751243781095) internal successors, (404), 402 states have internal predecessors, (404), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:17:24,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 407 transitions. [2022-02-24 01:17:24,998 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 407 transitions. Word has length 400 [2022-02-24 01:17:24,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:17:24,999 INFO L470 AbstractCegarLoop]: Abstraction has 406 states and 407 transitions. [2022-02-24 01:17:24,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 2.024390243902439) internal successors, (166), 81 states have internal predecessors, (166), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:17:24,999 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 407 transitions. [2022-02-24 01:17:25,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2022-02-24 01:17:25,001 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:17:25,001 INFO L514 BasicCegarLoop]: trace histogram [79, 79, 79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:17:25,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-02-24 01:17:25,001 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:17:25,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:17:25,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1537469545, now seen corresponding path program 79 times [2022-02-24 01:17:25,002 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:17:25,002 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452044762] [2022-02-24 01:17:25,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:17:25,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:17:25,009 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:17:25,009 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:17:25,009 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:17:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:17:28,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:17:28,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:17:28,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:17:28,230 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:17:28,230 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452044762] [2022-02-24 01:17:28,230 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [452044762] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:17:28,230 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:17:28,230 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [83] imperfect sequences [] total 83 [2022-02-24 01:17:28,230 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575104414] [2022-02-24 01:17:28,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:17:28,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-02-24 01:17:28,230 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:17:28,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-02-24 01:17:28,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=6564, Unknown=0, NotChecked=0, Total=6806 [2022-02-24 01:17:28,232 INFO L87 Difference]: Start difference. First operand 406 states and 407 transitions. Second operand has 83 states, 83 states have (on average 2.0240963855421685) internal successors, (168), 82 states have internal predecessors, (168), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:17:35,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:17:35,926 INFO L93 Difference]: Finished difference Result 655 states and 658 transitions. [2022-02-24 01:17:35,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-02-24 01:17:35,927 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.0240963855421685) internal successors, (168), 82 states have internal predecessors, (168), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 405 [2022-02-24 01:17:35,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:17:35,928 INFO L225 Difference]: With dead ends: 655 [2022-02-24 01:17:35,928 INFO L226 Difference]: Without dead ends: 414 [2022-02-24 01:17:35,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=247, Invalid=6725, Unknown=0, NotChecked=0, Total=6972 [2022-02-24 01:17:35,929 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 240 mSDsluCounter, 6565 mSDsCounter, 0 mSdLazyCounter, 25767 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 6653 SdHoareTripleChecker+Invalid, 25929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 25767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-02-24 01:17:35,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 6653 Invalid, 25929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 25767 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-02-24 01:17:35,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-02-24 01:17:35,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 411. [2022-02-24 01:17:35,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 407 states have (on average 1.0049140049140048) internal successors, (409), 407 states have internal predecessors, (409), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:17:35,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 412 transitions. [2022-02-24 01:17:35,942 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 412 transitions. Word has length 405 [2022-02-24 01:17:35,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:17:35,942 INFO L470 AbstractCegarLoop]: Abstraction has 411 states and 412 transitions. [2022-02-24 01:17:35,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 2.0240963855421685) internal successors, (168), 82 states have internal predecessors, (168), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:17:35,942 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 412 transitions. [2022-02-24 01:17:35,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2022-02-24 01:17:35,944 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:17:35,944 INFO L514 BasicCegarLoop]: trace histogram [80, 80, 80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:17:35,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-02-24 01:17:35,944 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:17:35,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:17:35,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1412523792, now seen corresponding path program 80 times [2022-02-24 01:17:35,945 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:17:35,945 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758649386] [2022-02-24 01:17:35,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:17:35,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:17:35,955 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:17:35,955 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:17:35,955 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:17:36,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:17:39,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:17:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:17:39,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:17:39,233 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:17:39,233 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758649386] [2022-02-24 01:17:39,233 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1758649386] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:17:39,233 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:17:39,233 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84 [2022-02-24 01:17:39,233 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853045452] [2022-02-24 01:17:39,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:17:39,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-02-24 01:17:39,233 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:17:39,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-02-24 01:17:39,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=6727, Unknown=0, NotChecked=0, Total=6972 [2022-02-24 01:17:39,235 INFO L87 Difference]: Start difference. First operand 411 states and 412 transitions. Second operand has 84 states, 84 states have (on average 2.0238095238095237) internal successors, (170), 83 states have internal predecessors, (170), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:17:47,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:17:47,147 INFO L93 Difference]: Finished difference Result 663 states and 666 transitions. [2022-02-24 01:17:47,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-02-24 01:17:47,147 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.0238095238095237) internal successors, (170), 83 states have internal predecessors, (170), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 410 [2022-02-24 01:17:47,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:17:47,148 INFO L225 Difference]: With dead ends: 663 [2022-02-24 01:17:47,148 INFO L226 Difference]: Without dead ends: 419 [2022-02-24 01:17:47,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=250, Invalid=6890, Unknown=0, NotChecked=0, Total=7140 [2022-02-24 01:17:47,149 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 253 mSDsluCounter, 6703 mSDsCounter, 0 mSdLazyCounter, 26398 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 6792 SdHoareTripleChecker+Invalid, 26567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 26398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-02-24 01:17:47,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 6792 Invalid, 26567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 26398 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-02-24 01:17:47,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2022-02-24 01:17:47,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 416. [2022-02-24 01:17:47,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 412 states have (on average 1.0048543689320388) internal successors, (414), 412 states have internal predecessors, (414), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:17:47,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 417 transitions. [2022-02-24 01:17:47,158 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 417 transitions. Word has length 410 [2022-02-24 01:17:47,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:17:47,159 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 417 transitions. [2022-02-24 01:17:47,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 2.0238095238095237) internal successors, (170), 83 states have internal predecessors, (170), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:17:47,159 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 417 transitions. [2022-02-24 01:17:47,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2022-02-24 01:17:47,160 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:17:47,160 INFO L514 BasicCegarLoop]: trace histogram [81, 81, 81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:17:47,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-02-24 01:17:47,160 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:17:47,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:17:47,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1972165509, now seen corresponding path program 81 times [2022-02-24 01:17:47,161 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:17:47,161 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445050829] [2022-02-24 01:17:47,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:17:47,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:17:47,166 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:17:47,166 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:17:47,166 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:17:47,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:17:50,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:17:50,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:17:50,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:17:50,467 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:17:50,467 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445050829] [2022-02-24 01:17:50,467 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1445050829] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:17:50,468 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:17:50,468 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [] total 85 [2022-02-24 01:17:50,468 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077488569] [2022-02-24 01:17:50,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:17:50,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2022-02-24 01:17:50,468 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:17:50,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2022-02-24 01:17:50,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=6892, Unknown=0, NotChecked=0, Total=7140 [2022-02-24 01:17:50,469 INFO L87 Difference]: Start difference. First operand 416 states and 417 transitions. Second operand has 85 states, 85 states have (on average 2.023529411764706) internal successors, (172), 84 states have internal predecessors, (172), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:17:58,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:17:58,517 INFO L93 Difference]: Finished difference Result 671 states and 674 transitions. [2022-02-24 01:17:58,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-02-24 01:17:58,517 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.023529411764706) internal successors, (172), 84 states have internal predecessors, (172), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 415 [2022-02-24 01:17:58,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:17:58,518 INFO L225 Difference]: With dead ends: 671 [2022-02-24 01:17:58,518 INFO L226 Difference]: Without dead ends: 424 [2022-02-24 01:17:58,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=253, Invalid=7057, Unknown=0, NotChecked=0, Total=7310 [2022-02-24 01:17:58,519 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 328 mSDsluCounter, 6688 mSDsCounter, 0 mSdLazyCounter, 26944 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 6778 SdHoareTripleChecker+Invalid, 27151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 26944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-02-24 01:17:58,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 6778 Invalid, 27151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 26944 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-02-24 01:17:58,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-02-24 01:17:58,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 421. [2022-02-24 01:17:58,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 417 states have (on average 1.0047961630695443) internal successors, (419), 417 states have internal predecessors, (419), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:17:58,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 422 transitions. [2022-02-24 01:17:58,529 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 422 transitions. Word has length 415 [2022-02-24 01:17:58,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:17:58,529 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 422 transitions. [2022-02-24 01:17:58,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 2.023529411764706) internal successors, (172), 84 states have internal predecessors, (172), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:17:58,530 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 422 transitions. [2022-02-24 01:17:58,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2022-02-24 01:17:58,531 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:17:58,531 INFO L514 BasicCegarLoop]: trace histogram [82, 82, 82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:17:58,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-02-24 01:17:58,531 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:17:58,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:17:58,532 INFO L85 PathProgramCache]: Analyzing trace with hash 328921556, now seen corresponding path program 82 times [2022-02-24 01:17:58,532 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:17:58,532 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295483600] [2022-02-24 01:17:58,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:17:58,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:17:58,537 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:17:58,537 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:17:58,537 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:17:59,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:18:01,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:18:01,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:18:01,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:18:01,869 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:18:01,869 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295483600] [2022-02-24 01:18:01,869 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [295483600] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:18:01,869 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:18:01,870 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [86] imperfect sequences [] total 86 [2022-02-24 01:18:01,870 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281550659] [2022-02-24 01:18:01,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:18:01,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-02-24 01:18:01,870 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:18:01,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-02-24 01:18:01,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=7059, Unknown=0, NotChecked=0, Total=7310 [2022-02-24 01:18:01,871 INFO L87 Difference]: Start difference. First operand 421 states and 422 transitions. Second operand has 86 states, 86 states have (on average 2.0232558139534884) internal successors, (174), 85 states have internal predecessors, (174), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:18:10,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:18:10,126 INFO L93 Difference]: Finished difference Result 679 states and 682 transitions. [2022-02-24 01:18:10,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-02-24 01:18:10,127 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.0232558139534884) internal successors, (174), 85 states have internal predecessors, (174), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 420 [2022-02-24 01:18:10,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:18:10,128 INFO L225 Difference]: With dead ends: 679 [2022-02-24 01:18:10,128 INFO L226 Difference]: Without dead ends: 429 [2022-02-24 01:18:10,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=256, Invalid=7226, Unknown=0, NotChecked=0, Total=7482 [2022-02-24 01:18:10,129 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 375 mSDsluCounter, 6745 mSDsCounter, 0 mSdLazyCounter, 27540 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 6836 SdHoareTripleChecker+Invalid, 27771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 27540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:18:10,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 6836 Invalid, 27771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 27540 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2022-02-24 01:18:10,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-02-24 01:18:10,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 426. [2022-02-24 01:18:10,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 422 states have (on average 1.004739336492891) internal successors, (424), 422 states have internal predecessors, (424), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:18:10,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 427 transitions. [2022-02-24 01:18:10,139 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 427 transitions. Word has length 420 [2022-02-24 01:18:10,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:18:10,139 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 427 transitions. [2022-02-24 01:18:10,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 2.0232558139534884) internal successors, (174), 85 states have internal predecessors, (174), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:18:10,139 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 427 transitions. [2022-02-24 01:18:10,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2022-02-24 01:18:10,140 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:18:10,141 INFO L514 BasicCegarLoop]: trace histogram [83, 83, 83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:18:10,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-02-24 01:18:10,141 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:18:10,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:18:10,141 INFO L85 PathProgramCache]: Analyzing trace with hash 215919265, now seen corresponding path program 83 times [2022-02-24 01:18:10,141 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:18:10,141 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040260441] [2022-02-24 01:18:10,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:18:10,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:18:10,148 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:18:10,148 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:18:10,148 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:18:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:18:13,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:18:13,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:18:13,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:18:13,581 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:18:13,581 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040260441] [2022-02-24 01:18:13,581 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1040260441] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:18:13,581 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:18:13,581 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [87] imperfect sequences [] total 87 [2022-02-24 01:18:13,581 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536431614] [2022-02-24 01:18:13,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:18:13,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-02-24 01:18:13,582 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:18:13,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-02-24 01:18:13,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=7228, Unknown=0, NotChecked=0, Total=7482 [2022-02-24 01:18:13,583 INFO L87 Difference]: Start difference. First operand 426 states and 427 transitions. Second operand has 87 states, 87 states have (on average 2.0229885057471266) internal successors, (176), 86 states have internal predecessors, (176), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:18:22,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:18:22,023 INFO L93 Difference]: Finished difference Result 687 states and 690 transitions. [2022-02-24 01:18:22,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-24 01:18:22,024 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.0229885057471266) internal successors, (176), 86 states have internal predecessors, (176), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 425 [2022-02-24 01:18:22,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:18:22,025 INFO L225 Difference]: With dead ends: 687 [2022-02-24 01:18:22,025 INFO L226 Difference]: Without dead ends: 434 [2022-02-24 01:18:22,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=259, Invalid=7397, Unknown=0, NotChecked=0, Total=7656 [2022-02-24 01:18:22,026 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 416 mSDsluCounter, 6819 mSDsCounter, 0 mSdLazyCounter, 28153 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 6911 SdHoareTripleChecker+Invalid, 28405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 28153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-02-24 01:18:22,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [416 Valid, 6911 Invalid, 28405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 28153 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-02-24 01:18:22,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-02-24 01:18:22,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 431. [2022-02-24 01:18:22,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 427 states have (on average 1.0046838407494145) internal successors, (429), 427 states have internal predecessors, (429), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:18:22,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 432 transitions. [2022-02-24 01:18:22,036 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 432 transitions. Word has length 425 [2022-02-24 01:18:22,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:18:22,036 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 432 transitions. [2022-02-24 01:18:22,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 2.0229885057471266) internal successors, (176), 86 states have internal predecessors, (176), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:18:22,036 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 432 transitions. [2022-02-24 01:18:22,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-02-24 01:18:22,038 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:18:22,038 INFO L514 BasicCegarLoop]: trace histogram [84, 84, 84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:18:22,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-02-24 01:18:22,039 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:18:22,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:18:22,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1675130184, now seen corresponding path program 84 times [2022-02-24 01:18:22,039 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:18:22,039 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907379735] [2022-02-24 01:18:22,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:18:22,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:18:22,047 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:18:22,047 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:18:22,047 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:18:22,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:18:25,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:18:25,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:18:25,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:18:25,500 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:18:25,500 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907379735] [2022-02-24 01:18:25,500 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [907379735] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:18:25,500 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:18:25,501 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [88] imperfect sequences [] total 88 [2022-02-24 01:18:25,501 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403167070] [2022-02-24 01:18:25,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:18:25,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-02-24 01:18:25,502 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:18:25,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-02-24 01:18:25,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=7399, Unknown=0, NotChecked=0, Total=7656 [2022-02-24 01:18:25,504 INFO L87 Difference]: Start difference. First operand 431 states and 432 transitions. Second operand has 88 states, 88 states have (on average 2.022727272727273) internal successors, (178), 87 states have internal predecessors, (178), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:18:34,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:18:34,217 INFO L93 Difference]: Finished difference Result 695 states and 698 transitions. [2022-02-24 01:18:34,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-02-24 01:18:34,217 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.022727272727273) internal successors, (178), 87 states have internal predecessors, (178), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 430 [2022-02-24 01:18:34,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:18:34,218 INFO L225 Difference]: With dead ends: 695 [2022-02-24 01:18:34,219 INFO L226 Difference]: Without dead ends: 439 [2022-02-24 01:18:34,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=262, Invalid=7570, Unknown=0, NotChecked=0, Total=7832 [2022-02-24 01:18:34,220 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 395 mSDsluCounter, 7050 mSDsCounter, 0 mSdLazyCounter, 28867 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 7143 SdHoareTripleChecker+Invalid, 29109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 28867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-02-24 01:18:34,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 7143 Invalid, 29109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 28867 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-02-24 01:18:34,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-02-24 01:18:34,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 436. [2022-02-24 01:18:34,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 432 states have (on average 1.0046296296296295) internal successors, (434), 432 states have internal predecessors, (434), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:18:34,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 437 transitions. [2022-02-24 01:18:34,238 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 437 transitions. Word has length 430 [2022-02-24 01:18:34,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:18:34,239 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 437 transitions. [2022-02-24 01:18:34,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 2.022727272727273) internal successors, (178), 87 states have internal predecessors, (178), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:18:34,239 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 437 transitions. [2022-02-24 01:18:34,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2022-02-24 01:18:34,241 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:18:34,241 INFO L514 BasicCegarLoop]: trace histogram [85, 85, 85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:18:34,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-02-24 01:18:34,241 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:18:34,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:18:34,242 INFO L85 PathProgramCache]: Analyzing trace with hash -10020419, now seen corresponding path program 85 times [2022-02-24 01:18:34,242 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:18:34,242 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293989619] [2022-02-24 01:18:34,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:18:34,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:18:34,250 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:18:34,250 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:18:34,250 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:18:34,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:18:37,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:18:37,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:18:37,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:18:37,832 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:18:37,832 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293989619] [2022-02-24 01:18:37,832 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1293989619] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:18:37,832 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:18:37,832 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [89] imperfect sequences [] total 89 [2022-02-24 01:18:37,832 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765020357] [2022-02-24 01:18:37,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:18:37,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-02-24 01:18:37,833 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:18:37,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-02-24 01:18:37,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=7572, Unknown=0, NotChecked=0, Total=7832 [2022-02-24 01:18:37,834 INFO L87 Difference]: Start difference. First operand 436 states and 437 transitions. Second operand has 89 states, 89 states have (on average 2.0224719101123596) internal successors, (180), 88 states have internal predecessors, (180), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:18:46,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:18:46,807 INFO L93 Difference]: Finished difference Result 703 states and 706 transitions. [2022-02-24 01:18:46,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-02-24 01:18:46,808 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.0224719101123596) internal successors, (180), 88 states have internal predecessors, (180), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 435 [2022-02-24 01:18:46,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:18:46,809 INFO L225 Difference]: With dead ends: 703 [2022-02-24 01:18:46,809 INFO L226 Difference]: Without dead ends: 444 [2022-02-24 01:18:46,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=265, Invalid=7745, Unknown=0, NotChecked=0, Total=8010 [2022-02-24 01:18:46,810 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 304 mSDsluCounter, 7458 mSDsCounter, 0 mSdLazyCounter, 29694 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 7552 SdHoareTripleChecker+Invalid, 29891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 29694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-02-24 01:18:46,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 7552 Invalid, 29891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 29694 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2022-02-24 01:18:46,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-02-24 01:18:46,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 441. [2022-02-24 01:18:46,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 437 states have (on average 1.0045766590389016) internal successors, (439), 437 states have internal predecessors, (439), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:18:46,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 442 transitions. [2022-02-24 01:18:46,820 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 442 transitions. Word has length 435 [2022-02-24 01:18:46,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:18:46,820 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 442 transitions. [2022-02-24 01:18:46,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 2.0224719101123596) internal successors, (180), 88 states have internal predecessors, (180), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:18:46,821 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 442 transitions. [2022-02-24 01:18:46,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2022-02-24 01:18:46,822 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:18:46,822 INFO L514 BasicCegarLoop]: trace histogram [86, 86, 86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:18:46,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-02-24 01:18:46,822 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:18:46,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:18:46,823 INFO L85 PathProgramCache]: Analyzing trace with hash 2145821596, now seen corresponding path program 86 times [2022-02-24 01:18:46,823 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:18:46,823 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115004525] [2022-02-24 01:18:46,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:18:46,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:18:46,828 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:18:46,828 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:18:46,828 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:18:47,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:18:50,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:18:50,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:18:50,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:18:50,411 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:18:50,411 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115004525] [2022-02-24 01:18:50,411 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [115004525] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:18:50,411 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:18:50,411 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [90] imperfect sequences [] total 90 [2022-02-24 01:18:50,411 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846655407] [2022-02-24 01:18:50,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:18:50,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-02-24 01:18:50,412 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:18:50,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-02-24 01:18:50,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=7747, Unknown=0, NotChecked=0, Total=8010 [2022-02-24 01:18:50,413 INFO L87 Difference]: Start difference. First operand 441 states and 442 transitions. Second operand has 90 states, 90 states have (on average 2.022222222222222) internal successors, (182), 89 states have internal predecessors, (182), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:18:59,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:18:59,561 INFO L93 Difference]: Finished difference Result 711 states and 714 transitions. [2022-02-24 01:18:59,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-24 01:18:59,562 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 2.022222222222222) internal successors, (182), 89 states have internal predecessors, (182), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 440 [2022-02-24 01:18:59,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:18:59,563 INFO L225 Difference]: With dead ends: 711 [2022-02-24 01:18:59,563 INFO L226 Difference]: Without dead ends: 449 [2022-02-24 01:18:59,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=268, Invalid=7922, Unknown=0, NotChecked=0, Total=8190 [2022-02-24 01:18:59,564 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 413 mSDsluCounter, 7368 mSDsCounter, 0 mSdLazyCounter, 30229 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 7463 SdHoareTripleChecker+Invalid, 30481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 30229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-02-24 01:18:59,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [413 Valid, 7463 Invalid, 30481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 30229 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2022-02-24 01:18:59,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-02-24 01:18:59,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 446. [2022-02-24 01:18:59,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 442 states have (on average 1.004524886877828) internal successors, (444), 442 states have internal predecessors, (444), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:18:59,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 447 transitions. [2022-02-24 01:18:59,577 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 447 transitions. Word has length 440 [2022-02-24 01:18:59,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:18:59,577 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 447 transitions. [2022-02-24 01:18:59,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 2.022222222222222) internal successors, (182), 89 states have internal predecessors, (182), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:18:59,577 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 447 transitions. [2022-02-24 01:18:59,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2022-02-24 01:18:59,579 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:18:59,579 INFO L514 BasicCegarLoop]: trace histogram [87, 87, 87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:18:59,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-02-24 01:18:59,580 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:18:59,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:18:59,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1634986201, now seen corresponding path program 87 times [2022-02-24 01:18:59,580 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:18:59,580 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078278245] [2022-02-24 01:18:59,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:18:59,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:18:59,586 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:18:59,586 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:18:59,586 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:19:00,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:19:03,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:19:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:19:03,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:19:03,312 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:19:03,312 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078278245] [2022-02-24 01:19:03,313 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1078278245] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:19:03,313 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:19:03,313 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [91] imperfect sequences [] total 91 [2022-02-24 01:19:03,313 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946414473] [2022-02-24 01:19:03,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:19:03,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-02-24 01:19:03,313 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:19:03,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-02-24 01:19:03,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=7924, Unknown=0, NotChecked=0, Total=8190 [2022-02-24 01:19:03,315 INFO L87 Difference]: Start difference. First operand 446 states and 447 transitions. Second operand has 91 states, 91 states have (on average 2.021978021978022) internal successors, (184), 90 states have internal predecessors, (184), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:19:12,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:19:12,675 INFO L93 Difference]: Finished difference Result 719 states and 722 transitions. [2022-02-24 01:19:12,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-02-24 01:19:12,675 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.021978021978022) internal successors, (184), 90 states have internal predecessors, (184), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 445 [2022-02-24 01:19:12,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:19:12,677 INFO L225 Difference]: With dead ends: 719 [2022-02-24 01:19:12,677 INFO L226 Difference]: Without dead ends: 454 [2022-02-24 01:19:12,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=271, Invalid=8101, Unknown=0, NotChecked=0, Total=8372 [2022-02-24 01:19:12,677 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 340 mSDsluCounter, 7735 mSDsCounter, 0 mSdLazyCounter, 31045 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 7831 SdHoareTripleChecker+Invalid, 31261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 31045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:19:12,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 7831 Invalid, 31261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 31045 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2022-02-24 01:19:12,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-02-24 01:19:12,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 451. [2022-02-24 01:19:12,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 447 states have (on average 1.0044742729306488) internal successors, (449), 447 states have internal predecessors, (449), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:19:12,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 452 transitions. [2022-02-24 01:19:12,688 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 452 transitions. Word has length 445 [2022-02-24 01:19:12,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:19:12,688 INFO L470 AbstractCegarLoop]: Abstraction has 451 states and 452 transitions. [2022-02-24 01:19:12,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 2.021978021978022) internal successors, (184), 90 states have internal predecessors, (184), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:19:12,688 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 452 transitions. [2022-02-24 01:19:12,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2022-02-24 01:19:12,690 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:19:12,690 INFO L514 BasicCegarLoop]: trace histogram [88, 88, 88, 88, 88, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:19:12,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-02-24 01:19:12,690 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:19:12,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:19:12,690 INFO L85 PathProgramCache]: Analyzing trace with hash -188056448, now seen corresponding path program 88 times [2022-02-24 01:19:12,690 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:19:12,691 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638827679] [2022-02-24 01:19:12,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:19:12,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:19:12,697 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:19:12,697 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:19:12,697 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:19:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:19:16,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:19:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:19:16,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:19:16,429 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:19:16,429 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638827679] [2022-02-24 01:19:16,429 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [638827679] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:19:16,429 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:19:16,429 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [92] imperfect sequences [] total 92 [2022-02-24 01:19:16,429 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172053019] [2022-02-24 01:19:16,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:19:16,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-02-24 01:19:16,429 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:19:16,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-02-24 01:19:16,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=8103, Unknown=0, NotChecked=0, Total=8372 [2022-02-24 01:19:16,431 INFO L87 Difference]: Start difference. First operand 451 states and 452 transitions. Second operand has 92 states, 92 states have (on average 2.0217391304347827) internal successors, (186), 91 states have internal predecessors, (186), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:19:25,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:19:25,991 INFO L93 Difference]: Finished difference Result 727 states and 730 transitions. [2022-02-24 01:19:25,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-02-24 01:19:25,991 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.0217391304347827) internal successors, (186), 91 states have internal predecessors, (186), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 450 [2022-02-24 01:19:25,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:19:25,992 INFO L225 Difference]: With dead ends: 727 [2022-02-24 01:19:25,992 INFO L226 Difference]: Without dead ends: 459 [2022-02-24 01:19:25,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=274, Invalid=8282, Unknown=0, NotChecked=0, Total=8556 [2022-02-24 01:19:25,993 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 411 mSDsluCounter, 7744 mSDsCounter, 0 mSdLazyCounter, 31653 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 7841 SdHoareTripleChecker+Invalid, 31905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 31653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-02-24 01:19:25,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 7841 Invalid, 31905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 31653 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2022-02-24 01:19:25,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-02-24 01:19:26,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 456. [2022-02-24 01:19:26,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 452 states have (on average 1.0044247787610618) internal successors, (454), 452 states have internal predecessors, (454), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:19:26,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 457 transitions. [2022-02-24 01:19:26,004 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 457 transitions. Word has length 450 [2022-02-24 01:19:26,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:19:26,004 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 457 transitions. [2022-02-24 01:19:26,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 2.0217391304347827) internal successors, (186), 91 states have internal predecessors, (186), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:19:26,004 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 457 transitions. [2022-02-24 01:19:26,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2022-02-24 01:19:26,006 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:19:26,006 INFO L514 BasicCegarLoop]: trace histogram [89, 89, 89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:19:26,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-02-24 01:19:26,006 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:19:26,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:19:26,006 INFO L85 PathProgramCache]: Analyzing trace with hash 433248245, now seen corresponding path program 89 times [2022-02-24 01:19:26,006 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:19:26,006 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643740799] [2022-02-24 01:19:26,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:19:26,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:19:26,012 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:19:26,012 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:19:26,012 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:19:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:19:29,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:19:29,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:19:29,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:19:29,877 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:19:29,877 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643740799] [2022-02-24 01:19:29,877 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1643740799] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:19:29,877 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:19:29,877 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [93] imperfect sequences [] total 93 [2022-02-24 01:19:29,877 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137243799] [2022-02-24 01:19:29,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:19:29,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-02-24 01:19:29,877 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:19:29,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-02-24 01:19:29,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=8284, Unknown=0, NotChecked=0, Total=8556 [2022-02-24 01:19:29,879 INFO L87 Difference]: Start difference. First operand 456 states and 457 transitions. Second operand has 93 states, 93 states have (on average 2.021505376344086) internal successors, (188), 92 states have internal predecessors, (188), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:19:39,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:19:39,650 INFO L93 Difference]: Finished difference Result 735 states and 738 transitions. [2022-02-24 01:19:39,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-02-24 01:19:39,650 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.021505376344086) internal successors, (188), 92 states have internal predecessors, (188), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 455 [2022-02-24 01:19:39,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:19:39,652 INFO L225 Difference]: With dead ends: 735 [2022-02-24 01:19:39,652 INFO L226 Difference]: Without dead ends: 464 [2022-02-24 01:19:39,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=277, Invalid=8465, Unknown=0, NotChecked=0, Total=8742 [2022-02-24 01:19:39,652 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 346 mSDsluCounter, 8095 mSDsCounter, 0 mSdLazyCounter, 32473 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 8193 SdHoareTripleChecker+Invalid, 32693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 32473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-02-24 01:19:39,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 8193 Invalid, 32693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 32473 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2022-02-24 01:19:39,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2022-02-24 01:19:39,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 461. [2022-02-24 01:19:39,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 457 states have (on average 1.0043763676148796) internal successors, (459), 457 states have internal predecessors, (459), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:19:39,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 462 transitions. [2022-02-24 01:19:39,665 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 462 transitions. Word has length 455 [2022-02-24 01:19:39,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:19:39,665 INFO L470 AbstractCegarLoop]: Abstraction has 461 states and 462 transitions. [2022-02-24 01:19:39,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 2.021505376344086) internal successors, (188), 92 states have internal predecessors, (188), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:19:39,665 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 462 transitions. [2022-02-24 01:19:39,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2022-02-24 01:19:39,667 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:19:39,667 INFO L514 BasicCegarLoop]: trace histogram [90, 90, 90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:19:39,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-02-24 01:19:39,667 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:19:39,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:19:39,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1874504348, now seen corresponding path program 90 times [2022-02-24 01:19:39,668 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:19:39,668 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336645844] [2022-02-24 01:19:39,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:19:39,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:19:39,674 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:19:39,674 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:19:39,674 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:19:40,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:19:43,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:19:43,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:19:43,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:19:43,590 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:19:43,590 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336645844] [2022-02-24 01:19:43,591 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1336645844] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:19:43,591 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:19:43,591 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [94] imperfect sequences [] total 94 [2022-02-24 01:19:43,591 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968685617] [2022-02-24 01:19:43,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:19:43,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-02-24 01:19:43,591 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:19:43,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-02-24 01:19:43,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=8467, Unknown=0, NotChecked=0, Total=8742 [2022-02-24 01:19:43,593 INFO L87 Difference]: Start difference. First operand 461 states and 462 transitions. Second operand has 94 states, 94 states have (on average 2.021276595744681) internal successors, (190), 93 states have internal predecessors, (190), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:19:53,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:19:53,666 INFO L93 Difference]: Finished difference Result 743 states and 746 transitions. [2022-02-24 01:19:53,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-02-24 01:19:53,667 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.021276595744681) internal successors, (190), 93 states have internal predecessors, (190), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 460 [2022-02-24 01:19:53,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:19:53,668 INFO L225 Difference]: With dead ends: 743 [2022-02-24 01:19:53,668 INFO L226 Difference]: Without dead ends: 469 [2022-02-24 01:19:53,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=280, Invalid=8650, Unknown=0, NotChecked=0, Total=8930 [2022-02-24 01:19:53,669 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 383 mSDsluCounter, 8193 mSDsCounter, 0 mSdLazyCounter, 33148 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 8292 SdHoareTripleChecker+Invalid, 33387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 33148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-02-24 01:19:53,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [383 Valid, 8292 Invalid, 33387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 33148 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2022-02-24 01:19:53,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-02-24 01:19:53,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 466. [2022-02-24 01:19:53,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 462 states have (on average 1.0043290043290043) internal successors, (464), 462 states have internal predecessors, (464), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:19:53,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 467 transitions. [2022-02-24 01:19:53,679 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 467 transitions. Word has length 460 [2022-02-24 01:19:53,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:19:53,680 INFO L470 AbstractCegarLoop]: Abstraction has 466 states and 467 transitions. [2022-02-24 01:19:53,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 2.021276595744681) internal successors, (190), 93 states have internal predecessors, (190), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:19:53,680 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 467 transitions. [2022-02-24 01:19:53,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2022-02-24 01:19:53,682 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:19:53,682 INFO L514 BasicCegarLoop]: trace histogram [91, 91, 91, 91, 91, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:19:53,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-02-24 01:19:53,682 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:19:53,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:19:53,682 INFO L85 PathProgramCache]: Analyzing trace with hash 2110891793, now seen corresponding path program 91 times [2022-02-24 01:19:53,682 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:19:53,682 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [926600791] [2022-02-24 01:19:53,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:19:53,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:19:53,688 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:19:53,688 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:19:53,688 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:19:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:19:57,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:19:57,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:19:57,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:19:57,689 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:19:57,689 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [926600791] [2022-02-24 01:19:57,689 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [926600791] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:19:57,689 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:19:57,689 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [95] imperfect sequences [] total 95 [2022-02-24 01:19:57,689 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728920676] [2022-02-24 01:19:57,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:19:57,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-02-24 01:19:57,690 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:19:57,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-02-24 01:19:57,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=8652, Unknown=0, NotChecked=0, Total=8930 [2022-02-24 01:19:57,691 INFO L87 Difference]: Start difference. First operand 466 states and 467 transitions. Second operand has 95 states, 95 states have (on average 2.0210526315789474) internal successors, (192), 94 states have internal predecessors, (192), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:20:07,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:20:07,942 INFO L93 Difference]: Finished difference Result 751 states and 754 transitions. [2022-02-24 01:20:07,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-02-24 01:20:07,943 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.0210526315789474) internal successors, (192), 94 states have internal predecessors, (192), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 465 [2022-02-24 01:20:07,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:20:07,944 INFO L225 Difference]: With dead ends: 751 [2022-02-24 01:20:07,944 INFO L226 Difference]: Without dead ends: 474 [2022-02-24 01:20:07,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=283, Invalid=8837, Unknown=0, NotChecked=0, Total=9120 [2022-02-24 01:20:07,945 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 386 mSDsluCounter, 8378 mSDsCounter, 0 mSdLazyCounter, 33882 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 8478 SdHoareTripleChecker+Invalid, 34123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 33882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:20:07,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 8478 Invalid, 34123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 33882 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2022-02-24 01:20:07,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-02-24 01:20:07,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 471. [2022-02-24 01:20:07,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 467 states have (on average 1.0042826552462527) internal successors, (469), 467 states have internal predecessors, (469), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:20:07,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 472 transitions. [2022-02-24 01:20:07,955 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 472 transitions. Word has length 465 [2022-02-24 01:20:07,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:20:07,955 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 472 transitions. [2022-02-24 01:20:07,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 2.0210526315789474) internal successors, (192), 94 states have internal predecessors, (192), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:20:07,956 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 472 transitions. [2022-02-24 01:20:07,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2022-02-24 01:20:07,957 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:20:07,957 INFO L514 BasicCegarLoop]: trace histogram [92, 92, 92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:20:07,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-02-24 01:20:07,958 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:20:07,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:20:07,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1421251000, now seen corresponding path program 92 times [2022-02-24 01:20:07,958 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:20:07,958 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998442917] [2022-02-24 01:20:07,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:20:07,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:20:07,964 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:20:07,964 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:20:07,964 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:20:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:20:11,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:20:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:20:11,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:20:11,944 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:20:11,944 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998442917] [2022-02-24 01:20:11,944 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [998442917] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:20:11,944 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:20:11,944 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [96] imperfect sequences [] total 96 [2022-02-24 01:20:11,944 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288248537] [2022-02-24 01:20:11,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:20:11,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-02-24 01:20:11,944 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:20:11,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-02-24 01:20:11,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=8839, Unknown=0, NotChecked=0, Total=9120 [2022-02-24 01:20:11,946 INFO L87 Difference]: Start difference. First operand 471 states and 472 transitions. Second operand has 96 states, 96 states have (on average 2.0208333333333335) internal successors, (194), 95 states have internal predecessors, (194), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:20:22,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:20:22,333 INFO L93 Difference]: Finished difference Result 759 states and 762 transitions. [2022-02-24 01:20:22,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-02-24 01:20:22,334 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.0208333333333335) internal successors, (194), 95 states have internal predecessors, (194), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 470 [2022-02-24 01:20:22,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:20:22,335 INFO L225 Difference]: With dead ends: 759 [2022-02-24 01:20:22,335 INFO L226 Difference]: Without dead ends: 479 [2022-02-24 01:20:22,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=286, Invalid=9026, Unknown=0, NotChecked=0, Total=9312 [2022-02-24 01:20:22,336 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 417 mSDsluCounter, 8495 mSDsCounter, 0 mSdLazyCounter, 34582 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 8596 SdHoareTripleChecker+Invalid, 34839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 34582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:20:22,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 8596 Invalid, 34839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 34582 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2022-02-24 01:20:22,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-02-24 01:20:22,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 476. [2022-02-24 01:20:22,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 472 states have (on average 1.0042372881355932) internal successors, (474), 472 states have internal predecessors, (474), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:20:22,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 477 transitions. [2022-02-24 01:20:22,359 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 477 transitions. Word has length 470 [2022-02-24 01:20:22,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:20:22,359 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 477 transitions. [2022-02-24 01:20:22,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 2.0208333333333335) internal successors, (194), 95 states have internal predecessors, (194), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:20:22,359 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 477 transitions. [2022-02-24 01:20:22,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2022-02-24 01:20:22,361 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:20:22,361 INFO L514 BasicCegarLoop]: trace histogram [93, 93, 93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:20:22,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-02-24 01:20:22,361 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:20:22,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:20:22,362 INFO L85 PathProgramCache]: Analyzing trace with hash -314698195, now seen corresponding path program 93 times [2022-02-24 01:20:22,362 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:20:22,362 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74438667] [2022-02-24 01:20:22,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:20:22,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:20:22,368 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:20:22,368 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:20:22,368 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:20:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:20:26,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:20:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:20:26,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:20:26,452 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:20:26,452 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74438667] [2022-02-24 01:20:26,452 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [74438667] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:20:26,452 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:20:26,452 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [97] imperfect sequences [] total 97 [2022-02-24 01:20:26,452 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937042126] [2022-02-24 01:20:26,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:20:26,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-02-24 01:20:26,453 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:20:26,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-02-24 01:20:26,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=9028, Unknown=0, NotChecked=0, Total=9312 [2022-02-24 01:20:26,454 INFO L87 Difference]: Start difference. First operand 476 states and 477 transitions. Second operand has 97 states, 97 states have (on average 2.020618556701031) internal successors, (196), 96 states have internal predecessors, (196), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:20:37,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:20:37,027 INFO L93 Difference]: Finished difference Result 767 states and 770 transitions. [2022-02-24 01:20:37,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-02-24 01:20:37,027 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.020618556701031) internal successors, (196), 96 states have internal predecessors, (196), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 475 [2022-02-24 01:20:37,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:20:37,028 INFO L225 Difference]: With dead ends: 767 [2022-02-24 01:20:37,028 INFO L226 Difference]: Without dead ends: 484 [2022-02-24 01:20:37,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=289, Invalid=9217, Unknown=0, NotChecked=0, Total=9506 [2022-02-24 01:20:37,029 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 352 mSDsluCounter, 8854 mSDsCounter, 0 mSdLazyCounter, 35434 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 8956 SdHoareTripleChecker+Invalid, 35659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 35434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-02-24 01:20:37,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 8956 Invalid, 35659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 35434 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2022-02-24 01:20:37,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-02-24 01:20:37,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 481. [2022-02-24 01:20:37,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 477 states have (on average 1.0041928721174005) internal successors, (479), 477 states have internal predecessors, (479), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:20:37,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 482 transitions. [2022-02-24 01:20:37,040 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 482 transitions. Word has length 475 [2022-02-24 01:20:37,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:20:37,041 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 482 transitions. [2022-02-24 01:20:37,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.020618556701031) internal successors, (196), 96 states have internal predecessors, (196), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:20:37,041 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 482 transitions. [2022-02-24 01:20:37,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2022-02-24 01:20:37,043 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:20:37,043 INFO L514 BasicCegarLoop]: trace histogram [94, 94, 94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:20:37,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-02-24 01:20:37,043 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:20:37,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:20:37,043 INFO L85 PathProgramCache]: Analyzing trace with hash -968292564, now seen corresponding path program 94 times [2022-02-24 01:20:37,043 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:20:37,043 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473445404] [2022-02-24 01:20:37,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:20:37,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:20:37,050 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:20:37,050 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:20:37,050 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:20:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:20:41,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:20:41,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:20:41,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:20:41,201 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:20:41,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473445404] [2022-02-24 01:20:41,201 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1473445404] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:20:41,201 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:20:41,201 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [98] imperfect sequences [] total 98 [2022-02-24 01:20:41,201 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050693161] [2022-02-24 01:20:41,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:20:41,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-02-24 01:20:41,201 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:20:41,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-02-24 01:20:41,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=9219, Unknown=0, NotChecked=0, Total=9506 [2022-02-24 01:20:41,202 INFO L87 Difference]: Start difference. First operand 481 states and 482 transitions. Second operand has 98 states, 98 states have (on average 2.020408163265306) internal successors, (198), 97 states have internal predecessors, (198), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:20:52,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:20:52,041 INFO L93 Difference]: Finished difference Result 775 states and 778 transitions. [2022-02-24 01:20:52,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-02-24 01:20:52,042 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 2.020408163265306) internal successors, (198), 97 states have internal predecessors, (198), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 480 [2022-02-24 01:20:52,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:20:52,044 INFO L225 Difference]: With dead ends: 775 [2022-02-24 01:20:52,044 INFO L226 Difference]: Without dead ends: 489 [2022-02-24 01:20:52,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=292, Invalid=9410, Unknown=0, NotChecked=0, Total=9702 [2022-02-24 01:20:52,045 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 315 mSDsluCounter, 9145 mSDsCounter, 0 mSdLazyCounter, 36252 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 9248 SdHoareTripleChecker+Invalid, 36459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 36252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-02-24 01:20:52,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 9248 Invalid, 36459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 36252 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2022-02-24 01:20:52,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-02-24 01:20:52,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 486. [2022-02-24 01:20:52,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 482 states have (on average 1.004149377593361) internal successors, (484), 482 states have internal predecessors, (484), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:20:52,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 487 transitions. [2022-02-24 01:20:52,057 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 487 transitions. Word has length 480 [2022-02-24 01:20:52,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:20:52,057 INFO L470 AbstractCegarLoop]: Abstraction has 486 states and 487 transitions. [2022-02-24 01:20:52,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 2.020408163265306) internal successors, (198), 97 states have internal predecessors, (198), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:20:52,057 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 487 transitions. [2022-02-24 01:20:52,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2022-02-24 01:20:52,059 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:20:52,059 INFO L514 BasicCegarLoop]: trace histogram [95, 95, 95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:20:52,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-02-24 01:20:52,060 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:20:52,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:20:52,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1852171593, now seen corresponding path program 95 times [2022-02-24 01:20:52,060 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:20:52,060 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775352314] [2022-02-24 01:20:52,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:20:52,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:20:52,067 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:20:52,067 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:20:52,067 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:20:52,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:20:56,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:20:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:20:56,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:20:56,273 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:20:56,273 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775352314] [2022-02-24 01:20:56,273 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [775352314] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:20:56,273 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:20:56,273 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [99] imperfect sequences [] total 99 [2022-02-24 01:20:56,273 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236179397] [2022-02-24 01:20:56,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:20:56,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-02-24 01:20:56,274 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:20:56,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-02-24 01:20:56,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=9412, Unknown=0, NotChecked=0, Total=9702 [2022-02-24 01:20:56,275 INFO L87 Difference]: Start difference. First operand 486 states and 487 transitions. Second operand has 99 states, 99 states have (on average 2.0202020202020203) internal successors, (200), 98 states have internal predecessors, (200), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:21:07,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:21:07,317 INFO L93 Difference]: Finished difference Result 783 states and 786 transitions. [2022-02-24 01:21:07,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-02-24 01:21:07,317 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.0202020202020203) internal successors, (200), 98 states have internal predecessors, (200), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 485 [2022-02-24 01:21:07,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:21:07,319 INFO L225 Difference]: With dead ends: 783 [2022-02-24 01:21:07,319 INFO L226 Difference]: Without dead ends: 494 [2022-02-24 01:21:07,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=295, Invalid=9605, Unknown=0, NotChecked=0, Total=9900 [2022-02-24 01:21:07,320 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 348 mSDsluCounter, 9263 mSDsCounter, 0 mSdLazyCounter, 36973 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 9367 SdHoareTripleChecker+Invalid, 37197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 36973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-02-24 01:21:07,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 9367 Invalid, 37197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 36973 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2022-02-24 01:21:07,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2022-02-24 01:21:07,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 491. [2022-02-24 01:21:07,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 487 states have (on average 1.004106776180698) internal successors, (489), 487 states have internal predecessors, (489), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:21:07,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 492 transitions. [2022-02-24 01:21:07,331 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 492 transitions. Word has length 485 [2022-02-24 01:21:07,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:21:07,331 INFO L470 AbstractCegarLoop]: Abstraction has 491 states and 492 transitions. [2022-02-24 01:21:07,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 2.0202020202020203) internal successors, (200), 98 states have internal predecessors, (200), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:21:07,332 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 492 transitions. [2022-02-24 01:21:07,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2022-02-24 01:21:07,333 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:21:07,334 INFO L514 BasicCegarLoop]: trace histogram [96, 96, 96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:21:07,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-02-24 01:21:07,334 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:21:07,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:21:07,334 INFO L85 PathProgramCache]: Analyzing trace with hash -315203568, now seen corresponding path program 96 times [2022-02-24 01:21:07,334 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:21:07,334 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660498938] [2022-02-24 01:21:07,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:21:07,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:21:07,341 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:21:07,341 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:21:07,341 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:21:08,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:21:11,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:21:11,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:21:11,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:21:11,707 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:21:11,707 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660498938] [2022-02-24 01:21:11,707 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [660498938] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:21:11,707 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:21:11,707 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [100] imperfect sequences [] total 100 [2022-02-24 01:21:11,707 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885248328] [2022-02-24 01:21:11,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:21:11,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2022-02-24 01:21:11,707 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:21:11,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2022-02-24 01:21:11,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=9607, Unknown=0, NotChecked=0, Total=9900 [2022-02-24 01:21:11,709 INFO L87 Difference]: Start difference. First operand 491 states and 492 transitions. Second operand has 100 states, 100 states have (on average 2.02) internal successors, (202), 99 states have internal predecessors, (202), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:21:23,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:21:23,005 INFO L93 Difference]: Finished difference Result 791 states and 794 transitions. [2022-02-24 01:21:23,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-02-24 01:21:23,005 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.02) internal successors, (202), 99 states have internal predecessors, (202), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 490 [2022-02-24 01:21:23,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:21:23,006 INFO L225 Difference]: With dead ends: 791 [2022-02-24 01:21:23,006 INFO L226 Difference]: Without dead ends: 499 [2022-02-24 01:21:23,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=298, Invalid=9802, Unknown=0, NotChecked=0, Total=10100 [2022-02-24 01:21:23,007 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 327 mSDsluCounter, 9518 mSDsCounter, 0 mSdLazyCounter, 37783 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 9623 SdHoareTripleChecker+Invalid, 37997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 37783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:21:23,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 9623 Invalid, 37997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 37783 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2022-02-24 01:21:23,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2022-02-24 01:21:23,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 496. [2022-02-24 01:21:23,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 492 states have (on average 1.0040650406504066) internal successors, (494), 492 states have internal predecessors, (494), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:21:23,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 497 transitions. [2022-02-24 01:21:23,019 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 497 transitions. Word has length 490 [2022-02-24 01:21:23,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:21:23,019 INFO L470 AbstractCegarLoop]: Abstraction has 496 states and 497 transitions. [2022-02-24 01:21:23,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 2.02) internal successors, (202), 99 states have internal predecessors, (202), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:21:23,019 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 497 transitions. [2022-02-24 01:21:23,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2022-02-24 01:21:23,021 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:21:23,021 INFO L514 BasicCegarLoop]: trace histogram [97, 97, 97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:21:23,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-02-24 01:21:23,021 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:21:23,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:21:23,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1243010149, now seen corresponding path program 97 times [2022-02-24 01:21:23,022 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:21:23,022 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370369817] [2022-02-24 01:21:23,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:21:23,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:21:23,028 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:21:23,028 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:21:23,028 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:21:23,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:21:27,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:21:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:21:27,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:21:27,368 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:21:27,368 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370369817] [2022-02-24 01:21:27,368 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1370369817] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:21:27,368 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:21:27,368 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [101] imperfect sequences [] total 101 [2022-02-24 01:21:27,368 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582491712] [2022-02-24 01:21:27,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:21:27,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-02-24 01:21:27,369 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:21:27,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-02-24 01:21:27,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=9804, Unknown=0, NotChecked=0, Total=10100 [2022-02-24 01:21:27,370 INFO L87 Difference]: Start difference. First operand 496 states and 497 transitions. Second operand has 101 states, 101 states have (on average 2.01980198019802) internal successors, (204), 100 states have internal predecessors, (204), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:21:38,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:21:38,911 INFO L93 Difference]: Finished difference Result 799 states and 802 transitions. [2022-02-24 01:21:38,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-02-24 01:21:38,912 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.01980198019802) internal successors, (204), 100 states have internal predecessors, (204), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 495 [2022-02-24 01:21:38,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:21:38,913 INFO L225 Difference]: With dead ends: 799 [2022-02-24 01:21:38,913 INFO L226 Difference]: Without dead ends: 504 [2022-02-24 01:21:38,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=301, Invalid=10001, Unknown=0, NotChecked=0, Total=10302 [2022-02-24 01:21:38,914 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 372 mSDsluCounter, 9610 mSDsCounter, 0 mSdLazyCounter, 38502 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 9716 SdHoareTripleChecker+Invalid, 38739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 38502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-02-24 01:21:38,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [372 Valid, 9716 Invalid, 38739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 38502 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2022-02-24 01:21:38,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2022-02-24 01:21:38,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 501. [2022-02-24 01:21:38,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 497 states have (on average 1.0040241448692153) internal successors, (499), 497 states have internal predecessors, (499), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:21:38,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 502 transitions. [2022-02-24 01:21:38,925 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 502 transitions. Word has length 495 [2022-02-24 01:21:38,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:21:38,926 INFO L470 AbstractCegarLoop]: Abstraction has 501 states and 502 transitions. [2022-02-24 01:21:38,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 2.01980198019802) internal successors, (204), 100 states have internal predecessors, (204), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:21:38,926 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 502 transitions. [2022-02-24 01:21:38,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2022-02-24 01:21:38,928 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:21:38,928 INFO L514 BasicCegarLoop]: trace histogram [98, 98, 98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:21:38,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-02-24 01:21:38,928 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:21:38,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:21:38,928 INFO L85 PathProgramCache]: Analyzing trace with hash 461617396, now seen corresponding path program 98 times [2022-02-24 01:21:38,928 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:21:38,928 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602288928] [2022-02-24 01:21:38,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:21:38,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:21:38,937 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:21:38,937 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:21:38,937 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:21:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:21:43,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:21:43,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:21:43,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:21:43,461 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:21:43,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602288928] [2022-02-24 01:21:43,461 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1602288928] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:21:43,461 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:21:43,461 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [102] imperfect sequences [] total 102 [2022-02-24 01:21:43,461 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301913988] [2022-02-24 01:21:43,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:21:43,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-02-24 01:21:43,462 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:21:43,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-02-24 01:21:43,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=10003, Unknown=0, NotChecked=0, Total=10302 [2022-02-24 01:21:43,465 INFO L87 Difference]: Start difference. First operand 501 states and 502 transitions. Second operand has 102 states, 102 states have (on average 2.019607843137255) internal successors, (206), 101 states have internal predecessors, (206), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:21:55,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:21:55,247 INFO L93 Difference]: Finished difference Result 807 states and 810 transitions. [2022-02-24 01:21:55,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-02-24 01:21:55,248 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 2.019607843137255) internal successors, (206), 101 states have internal predecessors, (206), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 500 [2022-02-24 01:21:55,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:21:55,249 INFO L225 Difference]: With dead ends: 807 [2022-02-24 01:21:55,249 INFO L226 Difference]: Without dead ends: 509 [2022-02-24 01:21:55,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=304, Invalid=10202, Unknown=0, NotChecked=0, Total=10506 [2022-02-24 01:21:55,251 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 407 mSDsluCounter, 9729 mSDsCounter, 0 mSdLazyCounter, 39244 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 9836 SdHoareTripleChecker+Invalid, 39499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 39244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-02-24 01:21:55,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 9836 Invalid, 39499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 39244 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time] [2022-02-24 01:21:55,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-02-24 01:21:55,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 506. [2022-02-24 01:21:55,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 502 states have (on average 1.00398406374502) internal successors, (504), 502 states have internal predecessors, (504), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:21:55,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 507 transitions. [2022-02-24 01:21:55,265 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 507 transitions. Word has length 500 [2022-02-24 01:21:55,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:21:55,265 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 507 transitions. [2022-02-24 01:21:55,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 2.019607843137255) internal successors, (206), 101 states have internal predecessors, (206), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:21:55,265 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 507 transitions. [2022-02-24 01:21:55,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2022-02-24 01:21:55,268 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:21:55,268 INFO L514 BasicCegarLoop]: trace histogram [99, 99, 99, 99, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:21:55,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-02-24 01:21:55,268 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:21:55,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:21:55,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1482775679, now seen corresponding path program 99 times [2022-02-24 01:21:55,268 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:21:55,268 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686592546] [2022-02-24 01:21:55,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:21:55,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:21:55,276 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:21:55,276 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:21:55,276 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:21:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:21:59,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:21:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:21:59,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:21:59,743 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:21:59,743 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1686592546] [2022-02-24 01:21:59,744 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1686592546] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:21:59,744 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:21:59,744 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [] total 103 [2022-02-24 01:21:59,744 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370971904] [2022-02-24 01:21:59,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:21:59,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-02-24 01:21:59,744 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:21:59,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-02-24 01:21:59,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=10204, Unknown=0, NotChecked=0, Total=10506 [2022-02-24 01:21:59,746 INFO L87 Difference]: Start difference. First operand 506 states and 507 transitions. Second operand has 103 states, 103 states have (on average 2.0194174757281553) internal successors, (208), 102 states have internal predecessors, (208), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:22:11,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:22:11,624 INFO L93 Difference]: Finished difference Result 815 states and 818 transitions. [2022-02-24 01:22:11,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-02-24 01:22:11,624 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.0194174757281553) internal successors, (208), 102 states have internal predecessors, (208), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 505 [2022-02-24 01:22:11,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:22:11,625 INFO L225 Difference]: With dead ends: 815 [2022-02-24 01:22:11,626 INFO L226 Difference]: Without dead ends: 514 [2022-02-24 01:22:11,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=307, Invalid=10405, Unknown=0, NotChecked=0, Total=10712 [2022-02-24 01:22:11,626 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 394 mSDsluCounter, 9970 mSDsCounter, 0 mSdLazyCounter, 40066 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 10078 SdHoareTripleChecker+Invalid, 40315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 40066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2022-02-24 01:22:11,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [394 Valid, 10078 Invalid, 40315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 40066 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2022-02-24 01:22:11,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-02-24 01:22:11,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 511. [2022-02-24 01:22:11,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 507 states have (on average 1.0039447731755424) internal successors, (509), 507 states have internal predecessors, (509), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:22:11,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 512 transitions. [2022-02-24 01:22:11,639 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 512 transitions. Word has length 505 [2022-02-24 01:22:11,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:22:11,639 INFO L470 AbstractCegarLoop]: Abstraction has 511 states and 512 transitions. [2022-02-24 01:22:11,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.0194174757281553) internal successors, (208), 102 states have internal predecessors, (208), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:22:11,640 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 512 transitions. [2022-02-24 01:22:11,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2022-02-24 01:22:11,642 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:22:11,642 INFO L514 BasicCegarLoop]: trace histogram [100, 100, 100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:22:11,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-02-24 01:22:11,642 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:22:11,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:22:11,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1608298024, now seen corresponding path program 100 times [2022-02-24 01:22:11,642 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:22:11,642 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689531068] [2022-02-24 01:22:11,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:22:11,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:22:11,649 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:22:11,649 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:22:11,649 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:22:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:22:18,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:22:18,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:22:18,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:22:18,177 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:22:18,177 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [689531068] [2022-02-24 01:22:18,177 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [689531068] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:22:18,177 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:22:18,177 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [104] imperfect sequences [] total 104 [2022-02-24 01:22:18,178 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825594554] [2022-02-24 01:22:18,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:22:18,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-02-24 01:22:18,178 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:22:18,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-02-24 01:22:18,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=10407, Unknown=0, NotChecked=0, Total=10712 [2022-02-24 01:22:18,179 INFO L87 Difference]: Start difference. First operand 511 states and 512 transitions. Second operand has 104 states, 104 states have (on average 2.019230769230769) internal successors, (210), 103 states have internal predecessors, (210), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:22:30,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:22:30,370 INFO L93 Difference]: Finished difference Result 823 states and 826 transitions. [2022-02-24 01:22:30,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-02-24 01:22:30,371 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 2.019230769230769) internal successors, (210), 103 states have internal predecessors, (210), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 510 [2022-02-24 01:22:30,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:22:30,372 INFO L225 Difference]: With dead ends: 823 [2022-02-24 01:22:30,372 INFO L226 Difference]: Without dead ends: 519 [2022-02-24 01:22:30,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=310, Invalid=10610, Unknown=0, NotChecked=0, Total=10920 [2022-02-24 01:22:30,373 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 339 mSDsluCounter, 10318 mSDsCounter, 0 mSdLazyCounter, 40959 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 10427 SdHoareTripleChecker+Invalid, 41181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 40959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2022-02-24 01:22:30,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 10427 Invalid, 41181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 40959 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2022-02-24 01:22:30,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2022-02-24 01:22:30,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 516. [2022-02-24 01:22:30,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 512 states have (on average 1.00390625) internal successors, (514), 512 states have internal predecessors, (514), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:22:30,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 517 transitions. [2022-02-24 01:22:30,385 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 517 transitions. Word has length 510 [2022-02-24 01:22:30,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:22:30,385 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 517 transitions. [2022-02-24 01:22:30,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 2.019230769230769) internal successors, (210), 103 states have internal predecessors, (210), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:22:30,385 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 517 transitions. [2022-02-24 01:22:30,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2022-02-24 01:22:30,387 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:22:30,387 INFO L514 BasicCegarLoop]: trace histogram [101, 101, 101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:22:30,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-02-24 01:22:30,388 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:22:30,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:22:30,388 INFO L85 PathProgramCache]: Analyzing trace with hash 684397213, now seen corresponding path program 101 times [2022-02-24 01:22:30,388 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:22:30,388 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737019799] [2022-02-24 01:22:30,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:22:30,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:22:30,406 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:22:30,406 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:22:30,406 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:22:33,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:22:37,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:22:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:22:37,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:22:37,361 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:22:37,361 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737019799] [2022-02-24 01:22:37,361 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1737019799] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:22:37,361 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:22:37,361 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [105] imperfect sequences [] total 105 [2022-02-24 01:22:37,361 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728562305] [2022-02-24 01:22:37,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:22:37,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2022-02-24 01:22:37,362 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:22:37,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2022-02-24 01:22:37,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=10612, Unknown=0, NotChecked=0, Total=10920 [2022-02-24 01:22:37,364 INFO L87 Difference]: Start difference. First operand 516 states and 517 transitions. Second operand has 105 states, 105 states have (on average 2.019047619047619) internal successors, (212), 104 states have internal predecessors, (212), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:22:49,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:22:49,753 INFO L93 Difference]: Finished difference Result 831 states and 834 transitions. [2022-02-24 01:22:49,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-02-24 01:22:49,754 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 2.019047619047619) internal successors, (212), 104 states have internal predecessors, (212), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 515 [2022-02-24 01:22:49,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:22:49,755 INFO L225 Difference]: With dead ends: 831 [2022-02-24 01:22:49,755 INFO L226 Difference]: Without dead ends: 524 [2022-02-24 01:22:49,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=313, Invalid=10817, Unknown=0, NotChecked=0, Total=11130 [2022-02-24 01:22:49,756 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 388 mSDsluCounter, 10408 mSDsCounter, 0 mSdLazyCounter, 41704 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 10518 SdHoareTripleChecker+Invalid, 41951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 41704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:22:49,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 10518 Invalid, 41951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 41704 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2022-02-24 01:22:49,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-02-24 01:22:49,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 521. [2022-02-24 01:22:49,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 517 states have (on average 1.0038684719535784) internal successors, (519), 517 states have internal predecessors, (519), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:22:49,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 522 transitions. [2022-02-24 01:22:49,773 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 522 transitions. Word has length 515 [2022-02-24 01:22:49,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:22:49,773 INFO L470 AbstractCegarLoop]: Abstraction has 521 states and 522 transitions. [2022-02-24 01:22:49,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 2.019047619047619) internal successors, (212), 104 states have internal predecessors, (212), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:22:49,773 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 522 transitions. [2022-02-24 01:22:49,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2022-02-24 01:22:49,776 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:22:49,776 INFO L514 BasicCegarLoop]: trace histogram [102, 102, 102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:22:49,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-02-24 01:22:49,776 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:22:49,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:22:49,777 INFO L85 PathProgramCache]: Analyzing trace with hash -2121831748, now seen corresponding path program 102 times [2022-02-24 01:22:49,777 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:22:49,777 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423877190] [2022-02-24 01:22:49,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:22:49,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:22:49,786 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:22:49,786 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:22:49,786 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:22:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:22:56,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:22:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:22:56,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:22:56,325 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:22:56,325 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423877190] [2022-02-24 01:22:56,325 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [423877190] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:22:56,325 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:22:56,325 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [106] imperfect sequences [] total 106 [2022-02-24 01:22:56,325 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789633043] [2022-02-24 01:22:56,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:22:56,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2022-02-24 01:22:56,326 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:22:56,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2022-02-24 01:22:56,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=10819, Unknown=0, NotChecked=0, Total=11130 [2022-02-24 01:22:56,327 INFO L87 Difference]: Start difference. First operand 521 states and 522 transitions. Second operand has 106 states, 106 states have (on average 2.018867924528302) internal successors, (214), 105 states have internal predecessors, (214), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:23:08,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:23:08,985 INFO L93 Difference]: Finished difference Result 839 states and 842 transitions. [2022-02-24 01:23:08,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-02-24 01:23:08,986 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 2.018867924528302) internal successors, (214), 105 states have internal predecessors, (214), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 520 [2022-02-24 01:23:08,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:23:08,986 INFO L225 Difference]: With dead ends: 839 [2022-02-24 01:23:08,987 INFO L226 Difference]: Without dead ends: 529 [2022-02-24 01:23:08,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=316, Invalid=11026, Unknown=0, NotChecked=0, Total=11342 [2022-02-24 01:23:08,987 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 419 mSDsluCounter, 10545 mSDsCounter, 0 mSdLazyCounter, 42484 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 10656 SdHoareTripleChecker+Invalid, 42747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 42484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-02-24 01:23:08,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [419 Valid, 10656 Invalid, 42747 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [263 Valid, 42484 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time] [2022-02-24 01:23:08,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2022-02-24 01:23:08,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 526. [2022-02-24 01:23:09,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 522 states have (on average 1.003831417624521) internal successors, (524), 522 states have internal predecessors, (524), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:23:09,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 527 transitions. [2022-02-24 01:23:09,000 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 527 transitions. Word has length 520 [2022-02-24 01:23:09,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:23:09,000 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 527 transitions. [2022-02-24 01:23:09,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 2.018867924528302) internal successors, (214), 105 states have internal predecessors, (214), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:23:09,001 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 527 transitions. [2022-02-24 01:23:09,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2022-02-24 01:23:09,003 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:23:09,003 INFO L514 BasicCegarLoop]: trace histogram [103, 103, 103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:23:09,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-02-24 01:23:09,003 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:23:09,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:23:09,003 INFO L85 PathProgramCache]: Analyzing trace with hash -2048269895, now seen corresponding path program 103 times [2022-02-24 01:23:09,003 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:23:09,003 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66091368] [2022-02-24 01:23:09,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:23:09,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:23:09,010 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:23:09,011 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:23:09,011 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:23:11,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:23:15,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:23:15,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:23:15,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:23:15,945 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:23:15,945 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66091368] [2022-02-24 01:23:15,946 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [66091368] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:23:15,946 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:23:15,946 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [107] imperfect sequences [] total 107 [2022-02-24 01:23:15,946 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865746560] [2022-02-24 01:23:15,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:23:15,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-02-24 01:23:15,946 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:23:15,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-02-24 01:23:15,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=11028, Unknown=0, NotChecked=0, Total=11342 [2022-02-24 01:23:15,948 INFO L87 Difference]: Start difference. First operand 526 states and 527 transitions. Second operand has 107 states, 107 states have (on average 2.0186915887850465) internal successors, (216), 106 states have internal predecessors, (216), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:23:28,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:23:28,889 INFO L93 Difference]: Finished difference Result 847 states and 850 transitions. [2022-02-24 01:23:28,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-02-24 01:23:28,889 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 2.0186915887850465) internal successors, (216), 106 states have internal predecessors, (216), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 525 [2022-02-24 01:23:28,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:23:28,890 INFO L225 Difference]: With dead ends: 847 [2022-02-24 01:23:28,890 INFO L226 Difference]: Without dead ends: 534 [2022-02-24 01:23:28,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=319, Invalid=11237, Unknown=0, NotChecked=0, Total=11556 [2022-02-24 01:23:28,891 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 356 mSDsluCounter, 10919 mSDsCounter, 0 mSdLazyCounter, 43413 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 11031 SdHoareTripleChecker+Invalid, 43645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 43413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2022-02-24 01:23:28,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 11031 Invalid, 43645 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [232 Valid, 43413 Invalid, 0 Unknown, 0 Unchecked, 12.6s Time] [2022-02-24 01:23:28,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2022-02-24 01:23:28,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 531. [2022-02-24 01:23:28,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 527 states have (on average 1.0037950664136623) internal successors, (529), 527 states have internal predecessors, (529), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:23:28,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 532 transitions. [2022-02-24 01:23:28,909 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 532 transitions. Word has length 525 [2022-02-24 01:23:28,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:23:28,909 INFO L470 AbstractCegarLoop]: Abstraction has 531 states and 532 transitions. [2022-02-24 01:23:28,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 2.0186915887850465) internal successors, (216), 106 states have internal predecessors, (216), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:23:28,909 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 532 transitions. [2022-02-24 01:23:28,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2022-02-24 01:23:28,912 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:23:28,912 INFO L514 BasicCegarLoop]: trace histogram [104, 104, 104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:23:28,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-02-24 01:23:28,912 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:23:28,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:23:28,912 INFO L85 PathProgramCache]: Analyzing trace with hash -509459552, now seen corresponding path program 104 times [2022-02-24 01:23:28,912 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:23:28,912 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326199335] [2022-02-24 01:23:28,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:23:28,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:23:28,921 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:23:28,921 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:23:28,922 INFO L281 tedInterpolationCore]: Could not accelerate.