/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/nla-digbench-scaling/prod4br-ll_unwindbound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 02:36:21,633 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 02:36:21,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 02:36:21,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-02 02:36:21,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 02:36:21,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 02:36:21,700 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 02:36:21,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 02:36:21,701 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 02:36:21,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 02:36:21,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 02:36:21,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 02:36:21,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 02:36:21,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 02:36:21,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 02:36:21,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 02:36:21,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 02:36:21,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 02:36:21,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 02:36:21,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 02:36:21,727 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 [2023-04-02 02:36:21,754 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 02:36:21,754 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 02:36:21,755 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 02:36:21,755 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 02:36:21,756 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 02:36:21,756 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 02:36:21,757 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 02:36:21,757 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 02:36:21,757 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 02:36:21,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 02:36:21,758 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 02:36:21,758 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 02:36:21,758 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 02:36:21,758 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 02:36:21,758 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 02:36:21,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 02:36:21,759 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 02:36:21,759 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 02:36:21,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 02:36:21,759 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 02:36:21,759 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 02:36:21,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 02:36:21,759 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 02:36:21,759 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 02:36:21,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 02:36:21,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 02:36:21,760 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 02:36:21,760 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 02:36:21,760 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 02:36:21,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 02:36:21,761 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 02:36:21,761 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 02:36:21,761 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 02:36:21,761 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 02:36:21,761 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 02:36:21,761 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 02:36:22,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 02:36:22,023 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 02:36:22,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 02:36:22,028 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 02:36:22,029 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 02:36:22,030 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound5.c [2023-04-02 02:36:23,191 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 02:36:23,371 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 02:36:23,372 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound5.c [2023-04-02 02:36:23,376 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b18920a40/7313ad8ec1dd4e15bf0a8cea5c0578e9/FLAG21cb18d4a [2023-04-02 02:36:23,388 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b18920a40/7313ad8ec1dd4e15bf0a8cea5c0578e9 [2023-04-02 02:36:23,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 02:36:23,392 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 02:36:23,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 02:36:23,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 02:36:23,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 02:36:23,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 02:36:23" (1/1) ... [2023-04-02 02:36:23,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39d97817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:36:23, skipping insertion in model container [2023-04-02 02:36:23,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 02:36:23" (1/1) ... [2023-04-02 02:36:23,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 02:36:23,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 02:36:23,526 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/nla-digbench-scaling/prod4br-ll_unwindbound5.c[524,537] [2023-04-02 02:36:23,542 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 02:36:23,551 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 02:36:23,559 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/nla-digbench-scaling/prod4br-ll_unwindbound5.c[524,537] [2023-04-02 02:36:23,569 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 02:36:23,580 INFO L208 MainTranslator]: Completed translation [2023-04-02 02:36:23,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:36:23 WrapperNode [2023-04-02 02:36:23,581 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 02:36:23,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 02:36:23,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 02:36:23,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 02:36:23,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:36:23" (1/1) ... [2023-04-02 02:36:23,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:36:23" (1/1) ... [2023-04-02 02:36:23,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:36:23" (1/1) ... [2023-04-02 02:36:23,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:36:23" (1/1) ... [2023-04-02 02:36:23,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:36:23" (1/1) ... [2023-04-02 02:36:23,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:36:23" (1/1) ... [2023-04-02 02:36:23,612 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:36:23" (1/1) ... [2023-04-02 02:36:23,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:36:23" (1/1) ... [2023-04-02 02:36:23,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 02:36:23,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 02:36:23,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 02:36:23,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 02:36:23,616 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:36:23" (1/1) ... [2023-04-02 02:36:23,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 02:36:23,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:36:23,652 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) [2023-04-02 02:36:23,666 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 [2023-04-02 02:36:23,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 02:36:23,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 02:36:23,685 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 02:36:23,685 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 02:36:23,685 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 02:36:23,685 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 02:36:23,685 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 02:36:23,686 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 02:36:23,686 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 02:36:23,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 02:36:23,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 02:36:23,689 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 02:36:23,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 02:36:23,689 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 02:36:23,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 02:36:23,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 02:36:23,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 02:36:23,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 02:36:23,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 02:36:23,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 02:36:23,748 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 02:36:23,749 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 02:36:23,953 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 02:36:23,970 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 02:36:23,970 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 02:36:23,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 02:36:23 BoogieIcfgContainer [2023-04-02 02:36:23,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 02:36:23,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 02:36:23,974 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 02:36:23,976 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 02:36:23,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 02:36:23" (1/3) ... [2023-04-02 02:36:23,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1538625a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 02:36:23, skipping insertion in model container [2023-04-02 02:36:23,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:36:23" (2/3) ... [2023-04-02 02:36:23,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1538625a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 02:36:23, skipping insertion in model container [2023-04-02 02:36:23,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 02:36:23" (3/3) ... [2023-04-02 02:36:23,979 INFO L112 eAbstractionObserver]: Analyzing ICFG prod4br-ll_unwindbound5.c [2023-04-02 02:36:24,010 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 02:36:24,011 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 02:36:24,083 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 02:36:24,090 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;@7ffc1637, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 02:36:24,090 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 02:36:24,095 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-02 02:36:24,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-04-02 02:36:24,103 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:36:24,103 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:36:24,105 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:36:24,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:36:24,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1717894843, now seen corresponding path program 1 times [2023-04-02 02:36:24,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:36:24,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716200563] [2023-04-02 02:36:24,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:36:24,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:36:24,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:36:24,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:36:24,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716200563] [2023-04-02 02:36:24,247 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-04-02 02:36:24,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487437252] [2023-04-02 02:36:24,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:36:24,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:36:24,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:36:24,249 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) [2023-04-02 02:36:24,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 02:36:24,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:36:24,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 1 conjunts are in the unsatisfiable core [2023-04-02 02:36:24,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:36:24,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 02:36:24,338 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 02:36:24,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487437252] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:36:24,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 02:36:24,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-02 02:36:24,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746335152] [2023-04-02 02:36:24,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:36:24,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-02 02:36:24,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:36:24,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-02 02:36:24,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-02 02:36:24,384 INFO L87 Difference]: Start difference. First operand has 32 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 02:36:24,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:36:24,412 INFO L93 Difference]: Finished difference Result 55 states and 75 transitions. [2023-04-02 02:36:24,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-02 02:36:24,415 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2023-04-02 02:36:24,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:36:24,423 INFO L225 Difference]: With dead ends: 55 [2023-04-02 02:36:24,423 INFO L226 Difference]: Without dead ends: 27 [2023-04-02 02:36:24,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-02 02:36:24,430 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 02:36:24,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 02:36:24,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-04-02 02:36:24,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-04-02 02:36:24,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-02 02:36:24,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2023-04-02 02:36:24,478 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 17 [2023-04-02 02:36:24,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:36:24,479 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2023-04-02 02:36:24,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 02:36:24,480 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2023-04-02 02:36:24,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-04-02 02:36:24,481 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:36:24,481 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:36:24,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 02:36:24,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-04-02 02:36:24,689 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:36:24,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:36:24,690 INFO L85 PathProgramCache]: Analyzing trace with hash 444281082, now seen corresponding path program 1 times [2023-04-02 02:36:24,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:36:24,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694355991] [2023-04-02 02:36:24,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:36:24,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:36:24,719 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:36:24,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [204470531] [2023-04-02 02:36:24,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:36:24,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:36:24,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:36:24,722 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) [2023-04-02 02:36:24,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 02:36:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:36:24,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-02 02:36:24,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:36:24,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 02:36:24,890 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 02:36:24,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:36:24,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694355991] [2023-04-02 02:36:24,891 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 02:36:24,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204470531] [2023-04-02 02:36:24,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204470531] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:36:24,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 02:36:24,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 02:36:24,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011745003] [2023-04-02 02:36:24,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:36:24,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 02:36:24,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:36:24,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 02:36:24,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 02:36:24,894 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 02:36:24,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:36:24,912 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2023-04-02 02:36:24,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 02:36:24,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-04-02 02:36:24,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:36:24,927 INFO L225 Difference]: With dead ends: 37 [2023-04-02 02:36:24,927 INFO L226 Difference]: Without dead ends: 29 [2023-04-02 02:36:24,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 02:36:24,929 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 02:36:24,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 02:36:24,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-04-02 02:36:24,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-04-02 02:36:24,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-02 02:36:24,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2023-04-02 02:36:24,936 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 18 [2023-04-02 02:36:24,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:36:24,936 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2023-04-02 02:36:24,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 02:36:24,936 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2023-04-02 02:36:24,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-04-02 02:36:24,937 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:36:24,937 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:36:24,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 02:36:25,139 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,SelfDestructingSolverStorable1 [2023-04-02 02:36:25,140 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:36:25,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:36:25,140 INFO L85 PathProgramCache]: Analyzing trace with hash 446068542, now seen corresponding path program 1 times [2023-04-02 02:36:25,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:36:25,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851733982] [2023-04-02 02:36:25,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:36:25,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:36:25,153 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:36:25,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [757001033] [2023-04-02 02:36:25,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:36:25,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:36:25,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:36:25,155 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) [2023-04-02 02:36:25,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 02:36:25,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:36:25,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 16 conjunts are in the unsatisfiable core [2023-04-02 02:36:25,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:36:25,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 02:36:25,311 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 02:36:25,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:36:25,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851733982] [2023-04-02 02:36:25,311 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 02:36:25,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757001033] [2023-04-02 02:36:25,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757001033] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:36:25,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 02:36:25,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 02:36:25,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902216869] [2023-04-02 02:36:25,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:36:25,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 02:36:25,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:36:25,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 02:36:25,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 02:36:25,315 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 02:36:25,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:36:25,409 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2023-04-02 02:36:25,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 02:36:25,410 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-04-02 02:36:25,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:36:25,412 INFO L225 Difference]: With dead ends: 42 [2023-04-02 02:36:25,412 INFO L226 Difference]: Without dead ends: 40 [2023-04-02 02:36:25,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 02:36:25,416 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 9 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 02:36:25,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 77 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 02:36:25,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-04-02 02:36:25,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2023-04-02 02:36:25,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 24 states have internal predecessors, (28), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-02 02:36:25,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2023-04-02 02:36:25,431 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 18 [2023-04-02 02:36:25,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:36:25,432 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2023-04-02 02:36:25,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 02:36:25,432 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2023-04-02 02:36:25,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-04-02 02:36:25,433 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:36:25,433 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:36:25,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-02 02:36:25,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:36:25,634 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:36:25,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:36:25,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1308579644, now seen corresponding path program 1 times [2023-04-02 02:36:25,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:36:25,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580174842] [2023-04-02 02:36:25,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:36:25,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:36:25,648 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:36:25,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [435702955] [2023-04-02 02:36:25,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:36:25,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:36:25,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:36:25,650 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) [2023-04-02 02:36:25,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 02:36:25,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:36:25,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 19 conjunts are in the unsatisfiable core [2023-04-02 02:36:25,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:36:25,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 02:36:25,990 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 02:36:26,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 02:36:26,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:36:26,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580174842] [2023-04-02 02:36:26,186 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 02:36:26,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435702955] [2023-04-02 02:36:26,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435702955] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 02:36:26,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 02:36:26,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 16 [2023-04-02 02:36:26,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335537382] [2023-04-02 02:36:26,187 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 02:36:26,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 02:36:26,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:36:26,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 02:36:26,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-04-02 02:36:26,189 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 16 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 12 states have internal predecessors, (27), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2023-04-02 02:36:26,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:36:26,550 INFO L93 Difference]: Finished difference Result 56 states and 73 transitions. [2023-04-02 02:36:26,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 02:36:26,550 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 12 states have internal predecessors, (27), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 24 [2023-04-02 02:36:26,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:36:26,553 INFO L225 Difference]: With dead ends: 56 [2023-04-02 02:36:26,553 INFO L226 Difference]: Without dead ends: 52 [2023-04-02 02:36:26,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2023-04-02 02:36:26,555 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 52 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 02:36:26,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 172 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 02:36:26,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-04-02 02:36:26,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45. [2023-04-02 02:36:26,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.3) internal successors, (39), 33 states have internal predecessors, (39), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-02 02:36:26,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2023-04-02 02:36:26,566 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 24 [2023-04-02 02:36:26,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:36:26,566 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2023-04-02 02:36:26,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 12 states have internal predecessors, (27), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2023-04-02 02:36:26,567 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2023-04-02 02:36:26,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-04-02 02:36:26,567 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:36:26,568 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:36:26,574 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-04-02 02:36:26,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:36:26,773 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:36:26,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:36:26,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1797927234, now seen corresponding path program 1 times [2023-04-02 02:36:26,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:36:26,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806918151] [2023-04-02 02:36:26,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:36:26,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:36:26,787 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:36:26,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1761719277] [2023-04-02 02:36:26,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:36:26,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:36:26,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:36:26,789 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) [2023-04-02 02:36:26,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-02 02:36:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:36:26,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-02 02:36:26,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:36:26,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 02:36:26,905 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 02:36:26,965 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 02:36:26,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:36:26,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806918151] [2023-04-02 02:36:26,966 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 02:36:26,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761719277] [2023-04-02 02:36:26,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761719277] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 02:36:26,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 02:36:26,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-04-02 02:36:26,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864205518] [2023-04-02 02:36:26,967 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 02:36:26,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 02:36:26,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:36:26,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 02:36:26,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-04-02 02:36:26,970 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2023-04-02 02:36:27,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:36:27,059 INFO L93 Difference]: Finished difference Result 111 states and 144 transitions. [2023-04-02 02:36:27,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 02:36:27,059 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 27 [2023-04-02 02:36:27,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:36:27,064 INFO L225 Difference]: With dead ends: 111 [2023-04-02 02:36:27,064 INFO L226 Difference]: Without dead ends: 103 [2023-04-02 02:36:27,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-04-02 02:36:27,065 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 39 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 02:36:27,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 151 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 02:36:27,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-04-02 02:36:27,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2023-04-02 02:36:27,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 72 states have (on average 1.3611111111111112) internal successors, (98), 76 states have internal predecessors, (98), 17 states have call successors, (17), 10 states have call predecessors, (17), 9 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2023-04-02 02:36:27,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 128 transitions. [2023-04-02 02:36:27,087 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 128 transitions. Word has length 27 [2023-04-02 02:36:27,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:36:27,087 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 128 transitions. [2023-04-02 02:36:27,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2023-04-02 02:36:27,088 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 128 transitions. [2023-04-02 02:36:27,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-04-02 02:36:27,088 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:36:27,090 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:36:27,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-02 02:36:27,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:36:27,296 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:36:27,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:36:27,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1799714694, now seen corresponding path program 1 times [2023-04-02 02:36:27,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:36:27,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859705866] [2023-04-02 02:36:27,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:36:27,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:36:27,312 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:36:27,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1820496994] [2023-04-02 02:36:27,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:36:27,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:36:27,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:36:27,313 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) [2023-04-02 02:36:27,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-02 02:36:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:36:27,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 35 conjunts are in the unsatisfiable core [2023-04-02 02:36:27,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:36:27,622 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 02:36:27,622 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 02:36:29,006 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 02:36:29,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:36:29,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859705866] [2023-04-02 02:36:29,007 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 02:36:29,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820496994] [2023-04-02 02:36:29,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820496994] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 02:36:29,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 02:36:29,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2023-04-02 02:36:29,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239773854] [2023-04-02 02:36:29,007 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 02:36:29,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 02:36:29,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:36:29,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 02:36:29,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2023-04-02 02:36:29,026 INFO L87 Difference]: Start difference. First operand 99 states and 128 transitions. Second operand has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 15 states have internal predecessors, (32), 5 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-02 02:36:30,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:36:30,792 INFO L93 Difference]: Finished difference Result 139 states and 185 transitions. [2023-04-02 02:36:30,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 02:36:30,793 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 15 states have internal predecessors, (32), 5 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 27 [2023-04-02 02:36:30,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:36:30,796 INFO L225 Difference]: With dead ends: 139 [2023-04-02 02:36:30,796 INFO L226 Difference]: Without dead ends: 133 [2023-04-02 02:36:30,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2023-04-02 02:36:30,798 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 93 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-02 02:36:30,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 162 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-02 02:36:30,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-04-02 02:36:30,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 99. [2023-04-02 02:36:30,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 76 states have internal predecessors, (98), 15 states have call successors, (15), 11 states have call predecessors, (15), 9 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2023-04-02 02:36:30,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 125 transitions. [2023-04-02 02:36:30,847 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 125 transitions. Word has length 27 [2023-04-02 02:36:30,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:36:30,848 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 125 transitions. [2023-04-02 02:36:30,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 15 states have internal predecessors, (32), 5 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-02 02:36:30,848 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 125 transitions. [2023-04-02 02:36:30,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-04-02 02:36:30,853 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:36:30,858 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:36:30,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-02 02:36:31,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:36:31,065 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:36:31,066 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:36:31,066 INFO L85 PathProgramCache]: Analyzing trace with hash -2051781490, now seen corresponding path program 1 times [2023-04-02 02:36:31,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:36:31,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258121584] [2023-04-02 02:36:31,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:36:31,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:36:31,084 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:36:31,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [374137171] [2023-04-02 02:36:31,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:36:31,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:36:31,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:36:31,085 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) [2023-04-02 02:36:31,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-02 02:36:31,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:36:31,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-02 02:36:31,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:36:31,176 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-02 02:36:31,177 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 02:36:31,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:36:31,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258121584] [2023-04-02 02:36:31,177 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 02:36:31,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374137171] [2023-04-02 02:36:31,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374137171] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:36:31,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 02:36:31,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 02:36:31,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805446647] [2023-04-02 02:36:31,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:36:31,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 02:36:31,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:36:31,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 02:36:31,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 02:36:31,179 INFO L87 Difference]: Start difference. First operand 99 states and 125 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-02 02:36:31,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:36:31,221 INFO L93 Difference]: Finished difference Result 135 states and 168 transitions. [2023-04-02 02:36:31,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 02:36:31,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 38 [2023-04-02 02:36:31,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:36:31,224 INFO L225 Difference]: With dead ends: 135 [2023-04-02 02:36:31,224 INFO L226 Difference]: Without dead ends: 115 [2023-04-02 02:36:31,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 02:36:31,226 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 3 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 02:36:31,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 56 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 02:36:31,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-04-02 02:36:31,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2023-04-02 02:36:31,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 85 states have (on average 1.2941176470588236) internal successors, (110), 87 states have internal predecessors, (110), 18 states have call successors, (18), 11 states have call predecessors, (18), 9 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2023-04-02 02:36:31,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 143 transitions. [2023-04-02 02:36:31,265 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 143 transitions. Word has length 38 [2023-04-02 02:36:31,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:36:31,266 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 143 transitions. [2023-04-02 02:36:31,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-02 02:36:31,266 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 143 transitions. [2023-04-02 02:36:31,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-04-02 02:36:31,270 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:36:31,270 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:36:31,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-04-02 02:36:31,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:36:31,477 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:36:31,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:36:31,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1524039145, now seen corresponding path program 1 times [2023-04-02 02:36:31,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:36:31,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848153837] [2023-04-02 02:36:31,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:36:31,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:36:31,497 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:36:31,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1897275234] [2023-04-02 02:36:31,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:36:31,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:36:31,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:36:31,501 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) [2023-04-02 02:36:31,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-02 02:36:31,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:36:31,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 9 conjunts are in the unsatisfiable core [2023-04-02 02:36:31,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:36:31,599 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 02:36:31,599 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 02:36:31,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:36:31,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848153837] [2023-04-02 02:36:31,600 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 02:36:31,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897275234] [2023-04-02 02:36:31,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897275234] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:36:31,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 02:36:31,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 02:36:31,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462659887] [2023-04-02 02:36:31,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:36:31,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 02:36:31,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:36:31,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 02:36:31,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-02 02:36:31,601 INFO L87 Difference]: Start difference. First operand 113 states and 143 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-02 02:36:31,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:36:31,688 INFO L93 Difference]: Finished difference Result 141 states and 180 transitions. [2023-04-02 02:36:31,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 02:36:31,689 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 40 [2023-04-02 02:36:31,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:36:31,690 INFO L225 Difference]: With dead ends: 141 [2023-04-02 02:36:31,690 INFO L226 Difference]: Without dead ends: 129 [2023-04-02 02:36:31,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-02 02:36:31,691 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 6 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 02:36:31,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 147 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 02:36:31,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-04-02 02:36:31,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 113. [2023-04-02 02:36:31,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 85 states have (on average 1.2941176470588236) internal successors, (110), 87 states have internal predecessors, (110), 18 states have call successors, (18), 11 states have call predecessors, (18), 9 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2023-04-02 02:36:31,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 143 transitions. [2023-04-02 02:36:31,721 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 143 transitions. Word has length 40 [2023-04-02 02:36:31,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:36:31,721 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 143 transitions. [2023-04-02 02:36:31,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-02 02:36:31,722 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 143 transitions. [2023-04-02 02:36:31,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-04-02 02:36:31,724 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:36:31,724 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:36:31,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-02 02:36:31,933 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,SelfDestructingSolverStorable7 [2023-04-02 02:36:31,934 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:36:31,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:36:31,934 INFO L85 PathProgramCache]: Analyzing trace with hash -470105561, now seen corresponding path program 1 times [2023-04-02 02:36:31,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:36:31,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759578181] [2023-04-02 02:36:31,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:36:31,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:36:31,942 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:36:31,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [270029999] [2023-04-02 02:36:31,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:36:31,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:36:31,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:36:31,943 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) [2023-04-02 02:36:31,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-02 02:36:31,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:36:31,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjunts are in the unsatisfiable core [2023-04-02 02:36:32,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:36:32,080 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 02:36:32,080 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 02:36:32,144 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-02 02:36:32,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:36:32,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759578181] [2023-04-02 02:36:32,144 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 02:36:32,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270029999] [2023-04-02 02:36:32,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270029999] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-02 02:36:32,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 02:36:32,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-04-02 02:36:32,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204222632] [2023-04-02 02:36:32,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:36:32,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 02:36:32,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:36:32,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 02:36:32,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-04-02 02:36:32,146 INFO L87 Difference]: Start difference. First operand 113 states and 143 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-02 02:36:32,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:36:32,329 INFO L93 Difference]: Finished difference Result 120 states and 149 transitions. [2023-04-02 02:36:32,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 02:36:32,329 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2023-04-02 02:36:32,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:36:32,330 INFO L225 Difference]: With dead ends: 120 [2023-04-02 02:36:32,330 INFO L226 Difference]: Without dead ends: 100 [2023-04-02 02:36:32,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-04-02 02:36:32,331 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 4 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 02:36:32,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 113 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 02:36:32,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-04-02 02:36:32,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 66. [2023-04-02 02:36:32,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 50 states have internal predecessors, (63), 9 states have call successors, (9), 8 states have call predecessors, (9), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-02 02:36:32,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2023-04-02 02:36:32,341 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 79 transitions. Word has length 40 [2023-04-02 02:36:32,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:36:32,342 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 79 transitions. [2023-04-02 02:36:32,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-02 02:36:32,342 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 79 transitions. [2023-04-02 02:36:32,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-04-02 02:36:32,342 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:36:32,342 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:36:32,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-02 02:36:32,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:36:32,548 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:36:32,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:36:32,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1818717446, now seen corresponding path program 2 times [2023-04-02 02:36:32,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:36:32,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990181342] [2023-04-02 02:36:32,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:36:32,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:36:32,561 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:36:32,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1353605140] [2023-04-02 02:36:32,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-02 02:36:32,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:36:32,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:36:32,565 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) [2023-04-02 02:36:32,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-02 02:36:32,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-02 02:36:32,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 02:36:32,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 13 conjunts are in the unsatisfiable core [2023-04-02 02:36:32,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:36:32,722 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 02:36:32,722 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 02:36:32,821 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 02:36:32,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:36:32,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990181342] [2023-04-02 02:36:32,821 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 02:36:32,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353605140] [2023-04-02 02:36:32,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353605140] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 02:36:32,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 02:36:32,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2023-04-02 02:36:32,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351158212] [2023-04-02 02:36:32,822 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 02:36:32,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 02:36:32,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:36:32,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 02:36:32,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-04-02 02:36:32,823 INFO L87 Difference]: Start difference. First operand 66 states and 79 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 7 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (11), 5 states have call predecessors, (11), 6 states have call successors, (11) [2023-04-02 02:36:32,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:36:32,883 INFO L93 Difference]: Finished difference Result 85 states and 102 transitions. [2023-04-02 02:36:32,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 02:36:32,884 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 7 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (11), 5 states have call predecessors, (11), 6 states have call successors, (11) Word has length 54 [2023-04-02 02:36:32,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:36:32,886 INFO L225 Difference]: With dead ends: 85 [2023-04-02 02:36:32,886 INFO L226 Difference]: Without dead ends: 77 [2023-04-02 02:36:32,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 94 SyntacticMatches, 7 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2023-04-02 02:36:32,887 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 40 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 02:36:32,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 118 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 02:36:32,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-04-02 02:36:32,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-04-02 02:36:32,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 58 states have (on average 1.293103448275862) internal successors, (75), 59 states have internal predecessors, (75), 10 states have call successors, (10), 9 states have call predecessors, (10), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-02 02:36:32,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 93 transitions. [2023-04-02 02:36:32,899 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 93 transitions. Word has length 54 [2023-04-02 02:36:32,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:36:32,900 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 93 transitions. [2023-04-02 02:36:32,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 7 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (11), 5 states have call predecessors, (11), 6 states have call successors, (11) [2023-04-02 02:36:32,901 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 93 transitions. [2023-04-02 02:36:32,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-04-02 02:36:32,901 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:36:32,901 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:36:32,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-04-02 02:36:33,109 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,SelfDestructingSolverStorable9 [2023-04-02 02:36:33,110 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:36:33,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:36:33,110 INFO L85 PathProgramCache]: Analyzing trace with hash -323774, now seen corresponding path program 3 times [2023-04-02 02:36:33,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:36:33,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96989830] [2023-04-02 02:36:33,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:36:33,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:36:33,121 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:36:33,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2142753908] [2023-04-02 02:36:33,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 02:36:33,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:36:33,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:36:33,125 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) [2023-04-02 02:36:33,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-04-02 02:36:33,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-04-02 02:36:33,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-04-02 02:36:33,212 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-02 02:36:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-02 02:36:33,264 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-04-02 02:36:33,264 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-02 02:36:33,265 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 02:36:33,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-04-02 02:36:33,467 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,SelfDestructingSolverStorable10 [2023-04-02 02:36:33,470 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:36:33,473 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 02:36:33,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 02:36:33 BoogieIcfgContainer [2023-04-02 02:36:33,505 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 02:36:33,505 INFO L158 Benchmark]: Toolchain (without parser) took 10113.88ms. Allocated memory was 273.7MB in the beginning and 329.3MB in the end (delta: 55.6MB). Free memory was 222.6MB in the beginning and 254.2MB in the end (delta: -31.6MB). Peak memory consumption was 24.5MB. Max. memory is 8.0GB. [2023-04-02 02:36:33,506 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 177.2MB. Free memory is still 125.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 02:36:33,506 INFO L158 Benchmark]: CACSL2BoogieTranslator took 188.24ms. Allocated memory is still 273.7MB. Free memory was 222.1MB in the beginning and 211.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-02 02:36:33,506 INFO L158 Benchmark]: Boogie Preprocessor took 32.87ms. Allocated memory is still 273.7MB. Free memory was 211.6MB in the beginning and 210.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-02 02:36:33,506 INFO L158 Benchmark]: RCFGBuilder took 356.87ms. Allocated memory is still 273.7MB. Free memory was 210.0MB in the beginning and 197.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-04-02 02:36:33,506 INFO L158 Benchmark]: TraceAbstraction took 9531.63ms. Allocated memory was 273.7MB in the beginning and 329.3MB in the end (delta: 55.6MB). Free memory was 196.4MB in the beginning and 254.2MB in the end (delta: -57.8MB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 02:36:33,507 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 177.2MB. Free memory is still 125.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 188.24ms. Allocated memory is still 273.7MB. Free memory was 222.1MB in the beginning and 211.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.87ms. Allocated memory is still 273.7MB. Free memory was 211.6MB in the beginning and 210.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 356.87ms. Allocated memory is still 273.7MB. Free memory was 210.0MB in the beginning and 197.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 9531.63ms. Allocated memory was 273.7MB in the beginning and 329.3MB in the end (delta: 55.6MB). Free memory was 196.4MB in the beginning and 254.2MB in the end (delta: -57.8MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 14]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int counter = 0; VAL [\old(counter)=10, counter=0] [L21] int x, y; [L22] long long a, b, p, q; [L24] x = __VERIFIER_nondet_int() [L25] y = __VERIFIER_nondet_int() [L26] CALL assume_abort_if_not(y >= 1) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L9] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L26] RET assume_abort_if_not(y >= 1) VAL [\old(counter)=0, counter=0, x=32, y=32] [L28] a = x [L29] b = y [L30] p = 1 [L31] q = 0 VAL [\old(counter)=0, a=32, b=32, counter=0, p=1, q=0, x=32, y=32] [L33] EXPR counter++ VAL [\old(counter)=0, a=32, b=32, counter++=0, counter=1, p=1, q=0, x=32, y=32] [L33] COND TRUE counter++<5 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, \old(counter)=0, counter=1] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(counter)=0, a=32, b=32, counter=1, p=1, q=0, x=32, y=32] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [\old(counter)=0, a=32, b=32, counter=1, p=1, q=0, x=32, y=32] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [\old(counter)=0, a=16, b=16, counter=1, p=4, q=0, x=32, y=32] [L33] EXPR counter++ VAL [\old(counter)=0, a=16, b=16, counter++=1, counter=2, p=4, q=0, x=32, y=32] [L33] COND TRUE counter++<5 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(counter)=0, a=16, b=16, counter=2, p=4, q=0, x=32, y=32] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [\old(counter)=0, a=16, b=16, counter=2, p=4, q=0, x=32, y=32] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [\old(counter)=0, a=8, b=8, counter=2, p=16, q=0, x=32, y=32] [L33] EXPR counter++ VAL [\old(counter)=0, a=8, b=8, counter++=2, counter=3, p=16, q=0, x=32, y=32] [L33] COND TRUE counter++<5 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, \old(counter)=0, counter=3] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=3] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(counter)=0, a=8, b=8, counter=3, p=16, q=0, x=32, y=32] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [\old(counter)=0, a=8, b=8, counter=3, p=16, q=0, x=32, y=32] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [\old(counter)=0, a=4, b=4, counter=3, p=64, q=0, x=32, y=32] [L33] EXPR counter++ VAL [\old(counter)=0, a=4, b=4, counter++=3, counter=4, p=64, q=0, x=32, y=32] [L33] COND TRUE counter++<5 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, \old(counter)=0, counter=4] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=4] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(counter)=0, a=4, b=4, counter=4, p=64, q=0, x=32, y=32] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [\old(counter)=0, a=4, b=4, counter=4, p=64, q=0, x=32, y=32] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [\old(counter)=0, a=2, b=2, counter=4, p=256, q=0, x=32, y=32] [L33] EXPR counter++ VAL [\old(counter)=0, a=2, b=2, counter++=4, counter=5, p=256, q=0, x=32, y=32] [L33] COND TRUE counter++<5 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(counter)=0, a=2, b=2, counter=5, p=256, q=0, x=32, y=32] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [\old(counter)=0, a=2, b=2, counter=5, p=256, q=0, x=32, y=32] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [\old(counter)=0, a=1, b=1, counter=5, p=1024, q=0, x=32, y=32] [L33] EXPR counter++ VAL [\old(counter)=0, a=1, b=1, counter++=5, counter=6, p=1024, q=0, x=32, y=32] [L33] COND FALSE !(counter++<5) [L56] CALL __VERIFIER_assert(q == (long long) x * y) VAL [\old(cond)=0, \old(counter)=0, counter=6] [L12] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=6] [L14] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=6] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.4s, OverallIterations: 11, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 256 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 246 mSDsluCounter, 1115 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 816 mSDsCounter, 59 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 730 IncrementalHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 59 mSolverCounterUnsat, 299 mSDtfsCounter, 730 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 489 GetRequests, 397 SyntacticMatches, 7 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=113occurred in iteration=7, InterpolantAutomatonStates: 76, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 103 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 383 NumberOfCodeBlocks, 383 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 460 ConstructedInterpolants, 1 QuantifiedInterpolants, 1564 SizeOfPredicates, 26 NumberOfNonLiveVariables, 1136 ConjunctsInSsa, 131 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 132/250 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-04-02 02:36:33,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...