/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/reducercommutativity/sep60-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-30 22:15:31,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-30 22:15:31,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-30 22:15:31,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-30 22:15:31,662 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-30 22:15:31,696 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-30 22:15:31,696 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-30 22:15:31,697 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-30 22:15:31,697 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-30 22:15:31,698 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-30 22:15:31,698 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-30 22:15:31,699 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-30 22:15:31,699 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-30 22:15:31,699 INFO L138 SettingsManager]: * Use SBE=true [2023-03-30 22:15:31,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-30 22:15:31,700 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-30 22:15:31,700 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-30 22:15:31,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-30 22:15:31,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-30 22:15:31,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-30 22:15:31,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-30 22:15:31,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-30 22:15:31,701 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-30 22:15:31,701 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-30 22:15:31,701 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-30 22:15:31,701 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-30 22:15:31,701 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-30 22:15:31,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-30 22:15:31,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-30 22:15:31,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 22:15:31,702 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-30 22:15:31,702 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-30 22:15:31,703 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-30 22:15:31,703 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-30 22:15:31,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-30 22:15:31,703 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-30 22:15:31,703 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-30 22:15:31,703 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-30 22:15:31,703 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-30 22:15:31,704 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-30 22:15:31,704 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-30 22:15:31,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-30 22:15:31,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-30 22:15:31,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-30 22:15:31,967 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-30 22:15:31,967 INFO L275 PluginConnector]: CDTParser initialized [2023-03-30 22:15:31,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/sep60-2.i [2023-03-30 22:15:33,245 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-30 22:15:33,427 INFO L351 CDTParser]: Found 1 translation units. [2023-03-30 22:15:33,428 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sep60-2.i [2023-03-30 22:15:33,434 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/690a12d40/2b45c92622854b089f885f95f425c8b2/FLAGdca76640e [2023-03-30 22:15:33,452 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/690a12d40/2b45c92622854b089f885f95f425c8b2 [2023-03-30 22:15:33,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-30 22:15:33,459 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-30 22:15:33,462 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-30 22:15:33,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-30 22:15:33,465 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-30 22:15:33,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 10:15:33" (1/1) ... [2023-03-30 22:15:33,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@408bbe86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:15:33, skipping insertion in model container [2023-03-30 22:15:33,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 10:15:33" (1/1) ... [2023-03-30 22:15:33,474 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-30 22:15:33,489 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-30 22:15:33,659 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sep60-2.i[1293,1306] [2023-03-30 22:15:33,663 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 22:15:33,672 INFO L203 MainTranslator]: Completed pre-run [2023-03-30 22:15:33,706 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sep60-2.i[1293,1306] [2023-03-30 22:15:33,708 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 22:15:33,721 INFO L208 MainTranslator]: Completed translation [2023-03-30 22:15:33,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:15:33 WrapperNode [2023-03-30 22:15:33,722 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-30 22:15:33,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-30 22:15:33,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-30 22:15:33,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-30 22:15:33,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:15:33" (1/1) ... [2023-03-30 22:15:33,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:15:33" (1/1) ... [2023-03-30 22:15:33,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:15:33" (1/1) ... [2023-03-30 22:15:33,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:15:33" (1/1) ... [2023-03-30 22:15:33,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:15:33" (1/1) ... [2023-03-30 22:15:33,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:15:33" (1/1) ... [2023-03-30 22:15:33,767 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:15:33" (1/1) ... [2023-03-30 22:15:33,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:15:33" (1/1) ... [2023-03-30 22:15:33,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-30 22:15:33,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-30 22:15:33,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-30 22:15:33,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-30 22:15:33,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:15:33" (1/1) ... [2023-03-30 22:15:33,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 22:15:33,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:15:33,814 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) [2023-03-30 22:15:33,836 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 [2023-03-30 22:15:33,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-30 22:15:33,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-30 22:15:33,855 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-30 22:15:33,855 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2023-03-30 22:15:33,856 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-30 22:15:33,856 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-30 22:15:33,856 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-30 22:15:33,856 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-03-30 22:15:33,856 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-03-30 22:15:33,856 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-30 22:15:33,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-30 22:15:33,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-30 22:15:33,857 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2023-03-30 22:15:33,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-30 22:15:33,857 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-30 22:15:33,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-03-30 22:15:33,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-30 22:15:33,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-30 22:15:33,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-30 22:15:33,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-30 22:15:33,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-30 22:15:33,946 INFO L236 CfgBuilder]: Building ICFG [2023-03-30 22:15:33,947 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-30 22:15:34,127 INFO L277 CfgBuilder]: Performing block encoding [2023-03-30 22:15:34,132 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-30 22:15:34,132 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-03-30 22:15:34,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 10:15:34 BoogieIcfgContainer [2023-03-30 22:15:34,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-30 22:15:34,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-30 22:15:34,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-30 22:15:34,154 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-30 22:15:34,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.03 10:15:33" (1/3) ... [2023-03-30 22:15:34,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c738d16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 10:15:34, skipping insertion in model container [2023-03-30 22:15:34,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:15:33" (2/3) ... [2023-03-30 22:15:34,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c738d16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 10:15:34, skipping insertion in model container [2023-03-30 22:15:34,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 10:15:34" (3/3) ... [2023-03-30 22:15:34,156 INFO L112 eAbstractionObserver]: Analyzing ICFG sep60-2.i [2023-03-30 22:15:34,188 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-30 22:15:34,188 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-30 22:15:34,235 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-30 22:15:34,241 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3f532cf4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-30 22:15:34,242 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-30 22:15:34,246 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-03-30 22:15:34,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-03-30 22:15:34,253 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:15:34,254 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:15:34,254 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:15:34,259 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:15:34,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1340267542, now seen corresponding path program 1 times [2023-03-30 22:15:34,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:15:34,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882171239] [2023-03-30 22:15:34,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:15:34,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:15:34,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:34,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:15:34,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:34,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-03-30 22:15:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:34,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-03-30 22:15:34,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:34,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-03-30 22:15:34,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:34,628 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-03-30 22:15:34,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:15:34,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882171239] [2023-03-30 22:15:34,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882171239] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 22:15:34,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 22:15:34,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-30 22:15:34,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596660078] [2023-03-30 22:15:34,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 22:15:34,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 22:15:34,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:15:34,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 22:15:34,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-30 22:15:34,677 INFO L87 Difference]: Start difference. First operand has 32 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-03-30 22:15:34,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:15:34,819 INFO L93 Difference]: Finished difference Result 56 states and 75 transitions. [2023-03-30 22:15:34,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 22:15:34,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2023-03-30 22:15:34,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:15:34,828 INFO L225 Difference]: With dead ends: 56 [2023-03-30 22:15:34,828 INFO L226 Difference]: Without dead ends: 27 [2023-03-30 22:15:34,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-30 22:15:34,836 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 27 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-30 22:15:34,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 10 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-30 22:15:34,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-03-30 22:15:34,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-03-30 22:15:34,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:15:34,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2023-03-30 22:15:34,890 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 32 [2023-03-30 22:15:34,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:15:34,890 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2023-03-30 22:15:34,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-03-30 22:15:34,890 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2023-03-30 22:15:34,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-03-30 22:15:34,892 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:15:34,892 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:15:34,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-30 22:15:34,892 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:15:34,893 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:15:34,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1608249685, now seen corresponding path program 1 times [2023-03-30 22:15:34,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:15:34,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015115497] [2023-03-30 22:15:34,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:15:34,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:15:34,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:35,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:15:35,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:35,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-03-30 22:15:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:35,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-03-30 22:15:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:35,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-03-30 22:15:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:35,121 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-03-30 22:15:35,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:15:35,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015115497] [2023-03-30 22:15:35,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015115497] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:15:35,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858014962] [2023-03-30 22:15:35,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:15:35,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:15:35,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:15:35,128 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 22:15:35,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-30 22:15:35,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:35,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2023-03-30 22:15:35,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:15:35,216 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-03-30 22:15:35,216 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 22:15:35,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858014962] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 22:15:35,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 22:15:35,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-30 22:15:35,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974648511] [2023-03-30 22:15:35,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 22:15:35,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 22:15:35,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:15:35,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 22:15:35,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-30 22:15:35,219 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-03-30 22:15:35,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:15:35,231 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2023-03-30 22:15:35,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 22:15:35,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2023-03-30 22:15:35,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:15:35,233 INFO L225 Difference]: With dead ends: 48 [2023-03-30 22:15:35,233 INFO L226 Difference]: Without dead ends: 29 [2023-03-30 22:15:35,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-30 22:15:35,235 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 1 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-30 22:15:35,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 58 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-30 22:15:35,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-03-30 22:15:35,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2023-03-30 22:15:35,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:15:35,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2023-03-30 22:15:35,242 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 32 [2023-03-30 22:15:35,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:15:35,242 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2023-03-30 22:15:35,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-03-30 22:15:35,242 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2023-03-30 22:15:35,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-03-30 22:15:35,243 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:15:35,243 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:15:35,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-30 22:15:35,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:15:35,449 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:15:35,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:15:35,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1378666163, now seen corresponding path program 1 times [2023-03-30 22:15:35,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:15:35,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830262471] [2023-03-30 22:15:35,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:15:35,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:15:35,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:35,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:15:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:35,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-30 22:15:35,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:35,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-30 22:15:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:35,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-03-30 22:15:35,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:35,564 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-03-30 22:15:35,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:15:35,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830262471] [2023-03-30 22:15:35,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830262471] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:15:35,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057111912] [2023-03-30 22:15:35,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:15:35,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:15:35,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:15:35,570 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 22:15:35,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-30 22:15:35,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:35,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjunts are in the unsatisfiable core [2023-03-30 22:15:35,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:15:35,678 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-03-30 22:15:35,679 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 22:15:35,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057111912] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 22:15:35,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 22:15:35,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2023-03-30 22:15:35,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188297501] [2023-03-30 22:15:35,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 22:15:35,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 22:15:35,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:15:35,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 22:15:35,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-30 22:15:35,681 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-03-30 22:15:35,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:15:35,700 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2023-03-30 22:15:35,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 22:15:35,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2023-03-30 22:15:35,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:15:35,704 INFO L225 Difference]: With dead ends: 49 [2023-03-30 22:15:35,704 INFO L226 Difference]: Without dead ends: 31 [2023-03-30 22:15:35,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-30 22:15:35,706 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 3 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-30 22:15:35,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 58 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-30 22:15:35,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-03-30 22:15:35,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2023-03-30 22:15:35,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:15:35,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2023-03-30 22:15:35,712 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 34 [2023-03-30 22:15:35,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:15:35,712 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2023-03-30 22:15:35,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-03-30 22:15:35,715 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2023-03-30 22:15:35,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-03-30 22:15:35,719 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:15:35,719 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:15:35,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-30 22:15:35,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-03-30 22:15:35,925 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:15:35,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:15:35,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1532493389, now seen corresponding path program 1 times [2023-03-30 22:15:35,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:15:35,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887696830] [2023-03-30 22:15:35,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:15:35,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:15:35,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:35,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:15:35,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:35,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-30 22:15:35,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:36,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-03-30 22:15:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:36,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-03-30 22:15:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:36,016 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-03-30 22:15:36,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:15:36,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887696830] [2023-03-30 22:15:36,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887696830] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:15:36,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160485794] [2023-03-30 22:15:36,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:15:36,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:15:36,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:15:36,021 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 22:15:36,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-30 22:15:36,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:36,101 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 2 conjunts are in the unsatisfiable core [2023-03-30 22:15:36,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:15:36,114 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-03-30 22:15:36,115 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 22:15:36,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160485794] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 22:15:36,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 22:15:36,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-30 22:15:36,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190678282] [2023-03-30 22:15:36,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 22:15:36,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 22:15:36,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:15:36,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 22:15:36,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-30 22:15:36,117 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-03-30 22:15:36,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:15:36,127 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2023-03-30 22:15:36,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 22:15:36,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2023-03-30 22:15:36,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:15:36,128 INFO L225 Difference]: With dead ends: 45 [2023-03-30 22:15:36,128 INFO L226 Difference]: Without dead ends: 31 [2023-03-30 22:15:36,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-30 22:15:36,129 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 1 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-30 22:15:36,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 58 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-30 22:15:36,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-03-30 22:15:36,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2023-03-30 22:15:36,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:15:36,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2023-03-30 22:15:36,135 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 43 [2023-03-30 22:15:36,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:15:36,136 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2023-03-30 22:15:36,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-03-30 22:15:36,136 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2023-03-30 22:15:36,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-03-30 22:15:36,137 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:15:36,137 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:15:36,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-30 22:15:36,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:15:36,344 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:15:36,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:15:36,345 INFO L85 PathProgramCache]: Analyzing trace with hash 2018137525, now seen corresponding path program 1 times [2023-03-30 22:15:36,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:15:36,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783076553] [2023-03-30 22:15:36,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:15:36,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:15:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:36,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:15:36,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:36,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-30 22:15:36,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:36,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-03-30 22:15:36,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:36,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-03-30 22:15:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:36,424 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-03-30 22:15:36,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:15:36,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783076553] [2023-03-30 22:15:36,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783076553] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:15:36,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244236222] [2023-03-30 22:15:36,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:15:36,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:15:36,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:15:36,426 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 22:15:36,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-30 22:15:36,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:36,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 3 conjunts are in the unsatisfiable core [2023-03-30 22:15:36,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:15:36,546 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-03-30 22:15:36,546 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:15:36,586 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-03-30 22:15:36,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244236222] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:15:36,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 22:15:36,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2023-03-30 22:15:36,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934202947] [2023-03-30 22:15:36,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 22:15:36,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-30 22:15:36,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:15:36,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-30 22:15:36,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-03-30 22:15:36,589 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:15:36,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:15:36,721 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2023-03-30 22:15:36,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-30 22:15:36,722 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 45 [2023-03-30 22:15:36,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:15:36,722 INFO L225 Difference]: With dead ends: 57 [2023-03-30 22:15:36,722 INFO L226 Difference]: Without dead ends: 36 [2023-03-30 22:15:36,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2023-03-30 22:15:36,726 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 33 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-30 22:15:36,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 27 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-30 22:15:36,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-03-30 22:15:36,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-03-30 22:15:36,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 28 states have internal predecessors, (32), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:15:36,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2023-03-30 22:15:36,749 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 45 [2023-03-30 22:15:36,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:15:36,750 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2023-03-30 22:15:36,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:15:36,750 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2023-03-30 22:15:36,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-03-30 22:15:36,753 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:15:36,754 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:15:36,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-03-30 22:15:36,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:15:36,962 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:15:36,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:15:36,962 INFO L85 PathProgramCache]: Analyzing trace with hash -718656241, now seen corresponding path program 2 times [2023-03-30 22:15:36,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:15:36,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075623167] [2023-03-30 22:15:36,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:15:36,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:15:36,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:37,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:15:37,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:37,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-03-30 22:15:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:37,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-03-30 22:15:37,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:37,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-03-30 22:15:37,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:37,130 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-03-30 22:15:37,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:15:37,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075623167] [2023-03-30 22:15:37,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075623167] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:15:37,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505264213] [2023-03-30 22:15:37,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-03-30 22:15:37,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:15:37,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:15:37,132 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 22:15:37,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-03-30 22:15:37,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-03-30 22:15:37,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-30 22:15:37,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-30 22:15:37,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:15:37,308 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-03-30 22:15:37,308 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:15:37,398 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-03-30 22:15:37,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505264213] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:15:37,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 22:15:37,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2023-03-30 22:15:37,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80885673] [2023-03-30 22:15:37,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 22:15:37,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-03-30 22:15:37,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:15:37,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-03-30 22:15:37,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2023-03-30 22:15:37,402 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-30 22:15:37,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:15:37,686 INFO L93 Difference]: Finished difference Result 74 states and 95 transitions. [2023-03-30 22:15:37,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-03-30 22:15:37,687 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 51 [2023-03-30 22:15:37,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:15:37,690 INFO L225 Difference]: With dead ends: 74 [2023-03-30 22:15:37,690 INFO L226 Difference]: Without dead ends: 53 [2023-03-30 22:15:37,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=489, Unknown=0, NotChecked=0, Total=702 [2023-03-30 22:15:37,691 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 57 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-30 22:15:37,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 32 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-30 22:15:37,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-03-30 22:15:37,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2023-03-30 22:15:37,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:15:37,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2023-03-30 22:15:37,698 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 51 [2023-03-30 22:15:37,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:15:37,699 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2023-03-30 22:15:37,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-30 22:15:37,699 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2023-03-30 22:15:37,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-03-30 22:15:37,700 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:15:37,700 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:15:37,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-03-30 22:15:37,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:15:37,911 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:15:37,912 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:15:37,912 INFO L85 PathProgramCache]: Analyzing trace with hash 637917693, now seen corresponding path program 3 times [2023-03-30 22:15:37,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:15:37,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643340411] [2023-03-30 22:15:37,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:15:37,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:15:37,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:38,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:15:38,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:38,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-03-30 22:15:38,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:38,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-03-30 22:15:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:38,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-03-30 22:15:38,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:38,024 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2023-03-30 22:15:38,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:15:38,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643340411] [2023-03-30 22:15:38,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643340411] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:15:38,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330558638] [2023-03-30 22:15:38,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-03-30 22:15:38,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:15:38,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:15:38,026 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 22:15:38,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-03-30 22:15:38,112 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-03-30 22:15:38,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-30 22:15:38,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjunts are in the unsatisfiable core [2023-03-30 22:15:38,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:15:38,133 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-03-30 22:15:38,133 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:15:38,169 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2023-03-30 22:15:38,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330558638] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:15:38,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 22:15:38,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2023-03-30 22:15:38,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444517532] [2023-03-30 22:15:38,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 22:15:38,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-30 22:15:38,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:15:38,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-30 22:15:38,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-03-30 22:15:38,172 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-03-30 22:15:38,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:15:38,305 INFO L93 Difference]: Finished difference Result 74 states and 85 transitions. [2023-03-30 22:15:38,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-30 22:15:38,306 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 72 [2023-03-30 22:15:38,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:15:38,309 INFO L225 Difference]: With dead ends: 74 [2023-03-30 22:15:38,309 INFO L226 Difference]: Without dead ends: 57 [2023-03-30 22:15:38,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2023-03-30 22:15:38,311 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 33 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-30 22:15:38,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 22 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-30 22:15:38,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-03-30 22:15:38,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2023-03-30 22:15:38,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 49 states have internal predecessors, (54), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:15:38,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2023-03-30 22:15:38,330 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 72 [2023-03-30 22:15:38,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:15:38,330 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2023-03-30 22:15:38,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-03-30 22:15:38,331 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2023-03-30 22:15:38,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-03-30 22:15:38,331 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:15:38,331 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:15:38,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-03-30 22:15:38,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:15:38,532 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:15:38,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:15:38,533 INFO L85 PathProgramCache]: Analyzing trace with hash -80307273, now seen corresponding path program 4 times [2023-03-30 22:15:38,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:15:38,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966788580] [2023-03-30 22:15:38,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:15:38,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:15:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:38,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:15:38,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:38,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-03-30 22:15:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:38,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-03-30 22:15:38,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:38,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-03-30 22:15:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:38,789 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-03-30 22:15:38,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:15:38,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966788580] [2023-03-30 22:15:38,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966788580] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:15:38,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746577182] [2023-03-30 22:15:38,789 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-03-30 22:15:38,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:15:38,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:15:38,791 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 22:15:38,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-03-30 22:15:38,918 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-03-30 22:15:38,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-30 22:15:38,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 22:15:38,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:15:38,959 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 40 proven. 5 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-03-30 22:15:38,959 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:15:39,012 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 40 proven. 5 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-03-30 22:15:39,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746577182] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:15:39,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 22:15:39,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 20 [2023-03-30 22:15:39,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767381138] [2023-03-30 22:15:39,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 22:15:39,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-03-30 22:15:39,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:15:39,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-03-30 22:15:39,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-03-30 22:15:39,015 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand has 20 states, 20 states have (on average 3.45) internal successors, (69), 19 states have internal predecessors, (69), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:15:39,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:15:39,366 INFO L93 Difference]: Finished difference Result 102 states and 125 transitions. [2023-03-30 22:15:39,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-03-30 22:15:39,366 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 19 states have internal predecessors, (69), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 78 [2023-03-30 22:15:39,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:15:39,367 INFO L225 Difference]: With dead ends: 102 [2023-03-30 22:15:39,367 INFO L226 Difference]: Without dead ends: 72 [2023-03-30 22:15:39,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=1017, Unknown=0, NotChecked=0, Total=1332 [2023-03-30 22:15:39,369 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 85 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-30 22:15:39,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 32 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-30 22:15:39,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-03-30 22:15:39,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2023-03-30 22:15:39,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 63 states have (on average 1.1428571428571428) internal successors, (72), 63 states have internal predecessors, (72), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:15:39,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 81 transitions. [2023-03-30 22:15:39,376 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 81 transitions. Word has length 78 [2023-03-30 22:15:39,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:15:39,377 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 81 transitions. [2023-03-30 22:15:39,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 19 states have internal predecessors, (69), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:15:39,377 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 81 transitions. [2023-03-30 22:15:39,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-03-30 22:15:39,378 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:15:39,378 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 11, 11, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:15:39,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-03-30 22:15:39,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:15:39,585 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:15:39,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:15:39,585 INFO L85 PathProgramCache]: Analyzing trace with hash 514205785, now seen corresponding path program 5 times [2023-03-30 22:15:39,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:15:39,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757247712] [2023-03-30 22:15:39,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:15:39,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:15:39,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:39,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:15:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:39,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-03-30 22:15:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:39,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-03-30 22:15:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:39,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-03-30 22:15:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:39,949 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-03-30 22:15:39,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:15:39,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757247712] [2023-03-30 22:15:39,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757247712] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:15:39,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464820235] [2023-03-30 22:15:39,949 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-03-30 22:15:39,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:15:39,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:15:39,953 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 22:15:39,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-03-30 22:15:40,603 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2023-03-30 22:15:40,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-30 22:15:40,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2023-03-30 22:15:40,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:15:40,721 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 244 proven. 51 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2023-03-30 22:15:40,722 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:15:40,875 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 0 proven. 299 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2023-03-30 22:15:40,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464820235] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:15:40,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 22:15:40,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 29 [2023-03-30 22:15:40,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717565555] [2023-03-30 22:15:40,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 22:15:40,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-03-30 22:15:40,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:15:40,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-03-30 22:15:40,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=600, Unknown=0, NotChecked=0, Total=812 [2023-03-30 22:15:40,881 INFO L87 Difference]: Start difference. First operand 71 states and 81 transitions. Second operand has 29 states, 29 states have (on average 3.2413793103448274) internal successors, (94), 28 states have internal predecessors, (94), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:15:41,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:15:41,465 INFO L93 Difference]: Finished difference Result 140 states and 179 transitions. [2023-03-30 22:15:41,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-03-30 22:15:41,465 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.2413793103448274) internal successors, (94), 28 states have internal predecessors, (94), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 116 [2023-03-30 22:15:41,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:15:41,466 INFO L225 Difference]: With dead ends: 140 [2023-03-30 22:15:41,467 INFO L226 Difference]: Without dead ends: 98 [2023-03-30 22:15:41,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=630, Invalid=2340, Unknown=0, NotChecked=0, Total=2970 [2023-03-30 22:15:41,471 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 137 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-30 22:15:41,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 47 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-30 22:15:41,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-03-30 22:15:41,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2023-03-30 22:15:41,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 89 states have (on average 1.1910112359550562) internal successors, (106), 89 states have internal predecessors, (106), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:15:41,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 115 transitions. [2023-03-30 22:15:41,499 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 115 transitions. Word has length 116 [2023-03-30 22:15:41,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:15:41,499 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 115 transitions. [2023-03-30 22:15:41,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.2413793103448274) internal successors, (94), 28 states have internal predecessors, (94), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:15:41,499 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 115 transitions. [2023-03-30 22:15:41,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-03-30 22:15:41,501 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:15:41,501 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 12, 12, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:15:41,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-03-30 22:15:41,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-03-30 22:15:41,709 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:15:41,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:15:41,709 INFO L85 PathProgramCache]: Analyzing trace with hash 679667451, now seen corresponding path program 6 times [2023-03-30 22:15:41,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:15:41,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367199098] [2023-03-30 22:15:41,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:15:41,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:15:41,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:42,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:15:42,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:42,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-03-30 22:15:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:42,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-03-30 22:15:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:42,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-03-30 22:15:42,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:42,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2884 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 2740 trivial. 0 not checked. [2023-03-30 22:15:42,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:15:42,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367199098] [2023-03-30 22:15:42,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367199098] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:15:42,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115631730] [2023-03-30 22:15:42,268 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-03-30 22:15:42,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:15:42,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:15:42,270 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 22:15:42,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-03-30 22:15:42,483 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-03-30 22:15:42,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-30 22:15:42,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-30 22:15:42,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:15:42,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2884 backedges. 1242 proven. 16 refuted. 0 times theorem prover too weak. 1626 trivial. 0 not checked. [2023-03-30 22:15:42,558 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:15:42,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2884 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2868 trivial. 0 not checked. [2023-03-30 22:15:42,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115631730] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:15:42,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 22:15:42,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7, 7] total 26 [2023-03-30 22:15:42,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180856752] [2023-03-30 22:15:42,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 22:15:42,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-03-30 22:15:42,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:15:42,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-03-30 22:15:42,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=478, Unknown=0, NotChecked=0, Total=650 [2023-03-30 22:15:42,665 INFO L87 Difference]: Start difference. First operand 97 states and 115 transitions. Second operand has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 25 states have internal predecessors, (77), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:15:43,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:15:43,114 INFO L93 Difference]: Finished difference Result 178 states and 220 transitions. [2023-03-30 22:15:43,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-03-30 22:15:43,115 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 25 states have internal predecessors, (77), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 190 [2023-03-30 22:15:43,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:15:43,116 INFO L225 Difference]: With dead ends: 178 [2023-03-30 22:15:43,116 INFO L226 Difference]: Without dead ends: 112 [2023-03-30 22:15:43,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=510, Invalid=1842, Unknown=0, NotChecked=0, Total=2352 [2023-03-30 22:15:43,118 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 72 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-30 22:15:43,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 47 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-30 22:15:43,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-03-30 22:15:43,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2023-03-30 22:15:43,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 103 states have (on average 1.1650485436893203) internal successors, (120), 103 states have internal predecessors, (120), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:15:43,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 129 transitions. [2023-03-30 22:15:43,127 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 129 transitions. Word has length 190 [2023-03-30 22:15:43,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:15:43,127 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 129 transitions. [2023-03-30 22:15:43,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 25 states have internal predecessors, (77), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:15:43,127 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 129 transitions. [2023-03-30 22:15:43,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-03-30 22:15:43,129 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:15:43,129 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 13, 13, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:15:43,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-03-30 22:15:43,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-03-30 22:15:43,335 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:15:43,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:15:43,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1674387473, now seen corresponding path program 7 times [2023-03-30 22:15:43,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:15:43,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564974377] [2023-03-30 22:15:43,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:15:43,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:15:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:43,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:15:43,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:43,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-03-30 22:15:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:43,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-03-30 22:15:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:43,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-03-30 22:15:43,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:43,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2993 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 2824 trivial. 0 not checked. [2023-03-30 22:15:43,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:15:43,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564974377] [2023-03-30 22:15:43,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564974377] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:15:43,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022247784] [2023-03-30 22:15:43,999 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-03-30 22:15:43,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:15:43,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:15:44,000 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 22:15:44,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-03-30 22:15:44,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:44,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 710 conjuncts, 15 conjunts are in the unsatisfiable core [2023-03-30 22:15:44,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:15:44,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2993 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 2824 trivial. 0 not checked. [2023-03-30 22:15:44,231 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:15:44,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2993 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 2824 trivial. 0 not checked. [2023-03-30 22:15:44,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022247784] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:15:44,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 22:15:44,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 32 [2023-03-30 22:15:44,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539671350] [2023-03-30 22:15:44,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 22:15:44,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-03-30 22:15:44,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:15:44,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-03-30 22:15:44,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2023-03-30 22:15:44,541 INFO L87 Difference]: Start difference. First operand 111 states and 129 transitions. Second operand has 32 states, 32 states have (on average 2.65625) internal successors, (85), 31 states have internal predecessors, (85), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:15:45,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:15:45,064 INFO L93 Difference]: Finished difference Result 219 states and 269 transitions. [2023-03-30 22:15:45,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-03-30 22:15:45,065 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.65625) internal successors, (85), 31 states have internal predecessors, (85), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 204 [2023-03-30 22:15:45,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:15:45,066 INFO L225 Difference]: With dead ends: 219 [2023-03-30 22:15:45,066 INFO L226 Difference]: Without dead ends: 141 [2023-03-30 22:15:45,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1336, Invalid=2204, Unknown=0, NotChecked=0, Total=3540 [2023-03-30 22:15:45,068 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 81 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-30 22:15:45,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 17 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-30 22:15:45,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-03-30 22:15:45,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2023-03-30 22:15:45,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 133 states have (on average 1.1278195488721805) internal successors, (150), 133 states have internal predecessors, (150), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:15:45,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 159 transitions. [2023-03-30 22:15:45,090 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 159 transitions. Word has length 204 [2023-03-30 22:15:45,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:15:45,090 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 159 transitions. [2023-03-30 22:15:45,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.65625) internal successors, (85), 31 states have internal predecessors, (85), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:15:45,090 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 159 transitions. [2023-03-30 22:15:45,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-03-30 22:15:45,092 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:15:45,092 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 28, 28, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:15:45,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-03-30 22:15:45,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-03-30 22:15:45,293 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:15:45,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:15:45,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1784301071, now seen corresponding path program 8 times [2023-03-30 22:15:45,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:15:45,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025046665] [2023-03-30 22:15:45,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:15:45,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:15:45,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:46,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:15:46,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:46,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-03-30 22:15:46,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:46,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-03-30 22:15:46,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:46,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2023-03-30 22:15:46,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:46,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3608 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 2824 trivial. 0 not checked. [2023-03-30 22:15:46,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:15:46,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025046665] [2023-03-30 22:15:46,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025046665] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:15:46,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053733367] [2023-03-30 22:15:46,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-03-30 22:15:46,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:15:46,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:15:46,561 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 22:15:46,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-03-30 22:15:46,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-03-30 22:15:46,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-30 22:15:46,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 30 conjunts are in the unsatisfiable core [2023-03-30 22:15:46,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:15:46,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3608 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 2824 trivial. 0 not checked. [2023-03-30 22:15:46,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:15:47,929 INFO L134 CoverageAnalysis]: Checked inductivity of 3608 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 2824 trivial. 0 not checked. [2023-03-30 22:15:47,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053733367] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:15:47,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 22:15:47,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 31] total 62 [2023-03-30 22:15:47,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561407601] [2023-03-30 22:15:47,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 22:15:47,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-03-30 22:15:47,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:15:47,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-03-30 22:15:47,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2023-03-30 22:15:47,933 INFO L87 Difference]: Start difference. First operand 141 states and 159 transitions. Second operand has 62 states, 62 states have (on average 2.338709677419355) internal successors, (145), 61 states have internal predecessors, (145), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:15:49,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:15:49,524 INFO L93 Difference]: Finished difference Result 279 states and 344 transitions. [2023-03-30 22:15:49,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-03-30 22:15:49,524 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.338709677419355) internal successors, (145), 61 states have internal predecessors, (145), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 234 [2023-03-30 22:15:49,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:15:49,525 INFO L225 Difference]: With dead ends: 279 [2023-03-30 22:15:49,525 INFO L226 Difference]: Without dead ends: 201 [2023-03-30 22:15:49,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 564 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2227 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=5371, Invalid=8909, Unknown=0, NotChecked=0, Total=14280 [2023-03-30 22:15:49,530 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 141 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-30 22:15:49,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 22 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-30 22:15:49,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-03-30 22:15:49,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2023-03-30 22:15:49,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 193 states have (on average 1.0880829015544042) internal successors, (210), 193 states have internal predecessors, (210), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:15:49,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 219 transitions. [2023-03-30 22:15:49,541 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 219 transitions. Word has length 234 [2023-03-30 22:15:49,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:15:49,541 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 219 transitions. [2023-03-30 22:15:49,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.338709677419355) internal successors, (145), 61 states have internal predecessors, (145), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:15:49,542 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 219 transitions. [2023-03-30 22:15:49,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-03-30 22:15:49,544 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:15:49,545 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 42, 42, 42, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:15:49,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-03-30 22:15:49,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-03-30 22:15:49,753 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:15:49,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:15:49,753 INFO L85 PathProgramCache]: Analyzing trace with hash 235159691, now seen corresponding path program 9 times [2023-03-30 22:15:49,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:15:49,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467726053] [2023-03-30 22:15:49,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:15:49,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:15:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:52,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:15:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:52,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-03-30 22:15:52,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:52,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-03-30 22:15:52,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:52,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2023-03-30 22:15:52,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:52,981 INFO L134 CoverageAnalysis]: Checked inductivity of 6188 backedges. 0 proven. 3364 refuted. 0 times theorem prover too weak. 2824 trivial. 0 not checked. [2023-03-30 22:15:52,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:15:52,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467726053] [2023-03-30 22:15:52,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467726053] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:15:52,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534306492] [2023-03-30 22:15:52,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-03-30 22:15:52,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:15:52,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:15:52,985 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 22:15:52,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-03-30 22:15:53,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2023-03-30 22:15:53,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-30 22:15:53,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 12 conjunts are in the unsatisfiable core [2023-03-30 22:15:53,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:15:54,310 INFO L134 CoverageAnalysis]: Checked inductivity of 6188 backedges. 1242 proven. 100 refuted. 0 times theorem prover too weak. 4846 trivial. 0 not checked. [2023-03-30 22:15:54,311 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:15:54,697 INFO L134 CoverageAnalysis]: Checked inductivity of 6188 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 6088 trivial. 0 not checked. [2023-03-30 22:15:54,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534306492] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:15:54,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 22:15:54,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 13, 13] total 84 [2023-03-30 22:15:54,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918789424] [2023-03-30 22:15:54,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 22:15:54,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2023-03-30 22:15:54,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:15:54,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2023-03-30 22:15:54,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2107, Invalid=4865, Unknown=0, NotChecked=0, Total=6972 [2023-03-30 22:15:54,702 INFO L87 Difference]: Start difference. First operand 201 states and 219 transitions. Second operand has 84 states, 84 states have (on average 2.2976190476190474) internal successors, (193), 83 states have internal predecessors, (193), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:15:57,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:15:57,383 INFO L93 Difference]: Finished difference Result 306 states and 354 transitions. [2023-03-30 22:15:57,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-03-30 22:15:57,383 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.2976190476190474) internal successors, (193), 83 states have internal predecessors, (193), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 294 [2023-03-30 22:15:57,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:15:57,385 INFO L225 Difference]: With dead ends: 306 [2023-03-30 22:15:57,385 INFO L226 Difference]: Without dead ends: 228 [2023-03-30 22:15:57,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 737 GetRequests, 574 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5209 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=6315, Invalid=20745, Unknown=0, NotChecked=0, Total=27060 [2023-03-30 22:15:57,392 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 188 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-30 22:15:57,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 42 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-30 22:15:57,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-03-30 22:15:57,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 227. [2023-03-30 22:15:57,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 219 states have (on average 1.0776255707762556) internal successors, (236), 219 states have internal predecessors, (236), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:15:57,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 245 transitions. [2023-03-30 22:15:57,403 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 245 transitions. Word has length 294 [2023-03-30 22:15:57,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:15:57,404 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 245 transitions. [2023-03-30 22:15:57,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 2.2976190476190474) internal successors, (193), 83 states have internal predecessors, (193), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:15:57,404 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 245 transitions. [2023-03-30 22:15:57,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2023-03-30 22:15:57,406 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:15:57,406 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 42, 42, 42, 22, 22, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:15:57,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-03-30 22:15:57,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-03-30 22:15:57,614 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:15:57,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:15:57,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1342564459, now seen corresponding path program 10 times [2023-03-30 22:15:57,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:15:57,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601906889] [2023-03-30 22:15:57,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:15:57,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:15:57,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:16:00,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:16:00,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:16:00,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-03-30 22:16:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:16:00,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-03-30 22:16:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:16:00,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2023-03-30 22:16:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:16:00,809 INFO L134 CoverageAnalysis]: Checked inductivity of 6689 backedges. 0 proven. 3481 refuted. 0 times theorem prover too weak. 3208 trivial. 0 not checked. [2023-03-30 22:16:00,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:16:00,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601906889] [2023-03-30 22:16:00,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601906889] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:16:00,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401757024] [2023-03-30 22:16:00,810 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-03-30 22:16:00,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:16:00,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:16:00,811 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 22:16:00,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-03-30 22:16:01,110 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-03-30 22:16:01,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-30 22:16:01,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 1208 conjuncts, 16 conjunts are in the unsatisfiable core [2023-03-30 22:16:01,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:16:01,585 INFO L134 CoverageAnalysis]: Checked inductivity of 6689 backedges. 1240 proven. 287 refuted. 0 times theorem prover too weak. 5162 trivial. 0 not checked. [2023-03-30 22:16:01,586 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:16:02,209 INFO L134 CoverageAnalysis]: Checked inductivity of 6689 backedges. 1240 proven. 287 refuted. 0 times theorem prover too weak. 5162 trivial. 0 not checked. [2023-03-30 22:16:02,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401757024] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:16:02,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 22:16:02,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 17, 17] total 93 [2023-03-30 22:16:02,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552048805] [2023-03-30 22:16:02,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 22:16:02,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2023-03-30 22:16:02,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:16:02,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2023-03-30 22:16:02,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2388, Invalid=6168, Unknown=0, NotChecked=0, Total=8556 [2023-03-30 22:16:02,214 INFO L87 Difference]: Start difference. First operand 227 states and 245 transitions. Second operand has 93 states, 93 states have (on average 2.5698924731182795) internal successors, (239), 92 states have internal predecessors, (239), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:16:05,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:16:05,458 INFO L93 Difference]: Finished difference Result 379 states and 450 transitions. [2023-03-30 22:16:05,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2023-03-30 22:16:05,459 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.5698924731182795) internal successors, (239), 92 states have internal predecessors, (239), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 320 [2023-03-30 22:16:05,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:16:05,460 INFO L225 Difference]: With dead ends: 379 [2023-03-30 22:16:05,461 INFO L226 Difference]: Without dead ends: 277 [2023-03-30 22:16:05,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 829 GetRequests, 648 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6765 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=7158, Invalid=26148, Unknown=0, NotChecked=0, Total=33306 [2023-03-30 22:16:05,465 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 353 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-30 22:16:05,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 57 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-30 22:16:05,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-03-30 22:16:05,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2023-03-30 22:16:05,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 269 states have (on average 1.1226765799256506) internal successors, (302), 269 states have internal predecessors, (302), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:16:05,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 311 transitions. [2023-03-30 22:16:05,478 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 311 transitions. Word has length 320 [2023-03-30 22:16:05,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:16:05,478 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 311 transitions. [2023-03-30 22:16:05,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 2.5698924731182795) internal successors, (239), 92 states have internal predecessors, (239), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:16:05,479 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 311 transitions. [2023-03-30 22:16:05,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2023-03-30 22:16:05,481 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:16:05,482 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 60, 60, 22, 22, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:16:05,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-03-30 22:16:05,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-03-30 22:16:05,689 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:16:05,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:16:05,689 INFO L85 PathProgramCache]: Analyzing trace with hash 2068653111, now seen corresponding path program 11 times [2023-03-30 22:16:05,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:16:05,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518030781] [2023-03-30 22:16:05,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:16:05,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:16:05,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:16:07,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:16:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:16:07,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-03-30 22:16:07,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:16:07,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2023-03-30 22:16:07,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:16:07,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2023-03-30 22:16:07,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:16:07,905 INFO L134 CoverageAnalysis]: Checked inductivity of 16384 backedges. 0 proven. 6863 refuted. 0 times theorem prover too weak. 9521 trivial. 0 not checked. [2023-03-30 22:16:07,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:16:07,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518030781] [2023-03-30 22:16:07,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518030781] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:16:07,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789982570] [2023-03-30 22:16:07,906 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-03-30 22:16:07,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:16:07,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:16:07,907 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 22:16:07,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process