/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/array-examples/standard_strcpy_original-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 18:36:25,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 18:36:25,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 18:36:25,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 18:36:25,094 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 [2023-04-01 18:36:25,119 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 18:36:25,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 18:36:25,120 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 18:36:25,120 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 18:36:25,121 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 18:36:25,121 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 18:36:25,121 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 18:36:25,122 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 18:36:25,122 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 18:36:25,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 18:36:25,123 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 18:36:25,123 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 18:36:25,123 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 18:36:25,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 18:36:25,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 18:36:25,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 18:36:25,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 18:36:25,123 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 18:36:25,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 18:36:25,124 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 18:36:25,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 18:36:25,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 18:36:25,124 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 18:36:25,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 18:36:25,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 18:36:25,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 18:36:25,125 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 18:36:25,125 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 18:36:25,125 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 18:36:25,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 18:36:25,125 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 18:36:25,125 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 18:36:25,125 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 18:36:25,125 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 18:36:25,126 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 18:36:25,126 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 18:36:25,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 18:36:25,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 18:36:25,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 18:36:25,377 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 18:36:25,377 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 18:36:25,378 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_strcpy_original-2.i [2023-04-01 18:36:26,606 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 18:36:26,766 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 18:36:26,767 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_strcpy_original-2.i [2023-04-01 18:36:26,771 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49d9dd039/2f955d4eb4e54aa9ba6c4faf465217f1/FLAG4a74d4c73 [2023-04-01 18:36:26,792 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49d9dd039/2f955d4eb4e54aa9ba6c4faf465217f1 [2023-04-01 18:36:26,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 18:36:26,796 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 18:36:26,797 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 18:36:26,797 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 18:36:26,800 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 18:36:26,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:36:26" (1/1) ... [2023-04-01 18:36:26,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2495b3c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:36:26, skipping insertion in model container [2023-04-01 18:36:26,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:36:26" (1/1) ... [2023-04-01 18:36:26,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 18:36:26,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 18:36:26,945 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/array-examples/standard_strcpy_original-2.i[896,909] [2023-04-01 18:36:26,961 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 18:36:26,972 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 18:36:26,984 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/array-examples/standard_strcpy_original-2.i[896,909] [2023-04-01 18:36:26,997 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 18:36:27,011 INFO L208 MainTranslator]: Completed translation [2023-04-01 18:36:27,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:36:27 WrapperNode [2023-04-01 18:36:27,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 18:36:27,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 18:36:27,013 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 18:36:27,013 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 18:36:27,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:36:27" (1/1) ... [2023-04-01 18:36:27,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:36:27" (1/1) ... [2023-04-01 18:36:27,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:36:27" (1/1) ... [2023-04-01 18:36:27,028 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:36:27" (1/1) ... [2023-04-01 18:36:27,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:36:27" (1/1) ... [2023-04-01 18:36:27,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:36:27" (1/1) ... [2023-04-01 18:36:27,045 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:36:27" (1/1) ... [2023-04-01 18:36:27,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:36:27" (1/1) ... [2023-04-01 18:36:27,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 18:36:27,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 18:36:27,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 18:36:27,049 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 18:36:27,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:36:27" (1/1) ... [2023-04-01 18:36:27,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 18:36:27,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 18:36:27,079 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) [2023-04-01 18:36:27,081 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 [2023-04-01 18:36:27,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 18:36:27,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 18:36:27,112 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 18:36:27,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-01 18:36:27,113 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 18:36:27,113 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 18:36:27,113 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 18:36:27,113 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-01 18:36:27,113 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-01 18:36:27,113 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 18:36:27,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 18:36:27,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 18:36:27,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-01 18:36:27,114 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 18:36:27,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-01 18:36:27,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 18:36:27,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 18:36:27,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 18:36:27,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 18:36:27,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 18:36:27,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 18:36:27,178 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 18:36:27,179 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 18:36:27,404 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 18:36:27,409 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 18:36:27,409 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-04-01 18:36:27,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:36:27 BoogieIcfgContainer [2023-04-01 18:36:27,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 18:36:27,413 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 18:36:27,413 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 18:36:27,416 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 18:36:27,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 06:36:26" (1/3) ... [2023-04-01 18:36:27,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fe22b24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:36:27, skipping insertion in model container [2023-04-01 18:36:27,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:36:27" (2/3) ... [2023-04-01 18:36:27,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fe22b24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:36:27, skipping insertion in model container [2023-04-01 18:36:27,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:36:27" (3/3) ... [2023-04-01 18:36:27,439 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_strcpy_original-2.i [2023-04-01 18:36:27,471 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 18:36:27,472 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 18:36:27,533 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 18:36:27,540 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;@3387e727, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 18:36:27,541 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 18:36:27,546 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 18:36:27,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-04-01 18:36:27,554 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 18:36:27,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 18:36:27,556 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 18:36:27,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 18:36:27,561 INFO L85 PathProgramCache]: Analyzing trace with hash -780357206, now seen corresponding path program 1 times [2023-04-01 18:36:27,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 18:36:27,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990458307] [2023-04-01 18:36:27,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 18:36:27,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 18:36:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:36:27,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 18:36:27,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:36:27,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 18:36:27,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 18:36:27,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990458307] [2023-04-01 18:36:27,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990458307] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 18:36:27,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 18:36:27,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 18:36:27,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096248577] [2023-04-01 18:36:27,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 18:36:27,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 18:36:27,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 18:36:27,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 18:36:27,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 18:36:27,861 INFO L87 Difference]: Start difference. First operand has 27 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 18:36:27,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 18:36:27,945 INFO L93 Difference]: Finished difference Result 47 states and 62 transitions. [2023-04-01 18:36:27,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 18:36:27,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-04-01 18:36:27,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 18:36:27,953 INFO L225 Difference]: With dead ends: 47 [2023-04-01 18:36:27,953 INFO L226 Difference]: Without dead ends: 22 [2023-04-01 18:36:27,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 18:36:27,959 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 23 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 18:36:27,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 10 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 18:36:27,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-04-01 18:36:27,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-04-01 18:36:27,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 18:36:27,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2023-04-01 18:36:27,993 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 16 [2023-04-01 18:36:27,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 18:36:27,994 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2023-04-01 18:36:27,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 18:36:27,994 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2023-04-01 18:36:27,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-04-01 18:36:27,995 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 18:36:27,995 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 18:36:27,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 18:36:27,996 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 18:36:27,996 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 18:36:27,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1539042215, now seen corresponding path program 1 times [2023-04-01 18:36:27,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 18:36:27,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432933560] [2023-04-01 18:36:27,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 18:36:27,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 18:36:28,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:36:28,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 18:36:28,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:36:28,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 18:36:28,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 18:36:28,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432933560] [2023-04-01 18:36:28,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432933560] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 18:36:28,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 18:36:28,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 18:36:28,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607054709] [2023-04-01 18:36:28,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 18:36:28,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 18:36:28,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 18:36:28,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 18:36:28,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 18:36:28,088 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 18:36:28,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 18:36:28,186 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2023-04-01 18:36:28,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 18:36:28,187 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-04-01 18:36:28,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 18:36:28,189 INFO L225 Difference]: With dead ends: 38 [2023-04-01 18:36:28,189 INFO L226 Difference]: Without dead ends: 23 [2023-04-01 18:36:28,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 18:36:28,193 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 21 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 18:36:28,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 12 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 18:36:28,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-04-01 18:36:28,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-04-01 18:36:28,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 18:36:28,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-04-01 18:36:28,208 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 18 [2023-04-01 18:36:28,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 18:36:28,209 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-04-01 18:36:28,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 18:36:28,209 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-04-01 18:36:28,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-04-01 18:36:28,209 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 18:36:28,210 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 18:36:28,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 18:36:28,210 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 18:36:28,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 18:36:28,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1508372149, now seen corresponding path program 1 times [2023-04-01 18:36:28,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 18:36:28,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732365808] [2023-04-01 18:36:28,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 18:36:28,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 18:36:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:36:28,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 18:36:28,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:36:28,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 18:36:28,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 18:36:28,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732365808] [2023-04-01 18:36:28,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732365808] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 18:36:28,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743905456] [2023-04-01 18:36:28,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 18:36:28,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 18:36:28,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 18:36:28,379 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) [2023-04-01 18:36:28,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 18:36:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:36:28,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 2 conjunts are in the unsatisfiable core [2023-04-01 18:36:28,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 18:36:28,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 18:36:28,483 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 18:36:28,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743905456] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 18:36:28,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 18:36:28,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 18:36:28,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038345978] [2023-04-01 18:36:28,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 18:36:28,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 18:36:28,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 18:36:28,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 18:36:28,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 18:36:28,490 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 18:36:28,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 18:36:28,507 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2023-04-01 18:36:28,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 18:36:28,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-04-01 18:36:28,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 18:36:28,509 INFO L225 Difference]: With dead ends: 35 [2023-04-01 18:36:28,510 INFO L226 Difference]: Without dead ends: 23 [2023-04-01 18:36:28,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 18:36:28,512 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 18:36:28,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 18:36:28,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-04-01 18:36:28,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-04-01 18:36:28,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 18:36:28,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2023-04-01 18:36:28,526 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 19 [2023-04-01 18:36:28,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 18:36:28,527 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-04-01 18:36:28,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 18:36:28,527 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2023-04-01 18:36:28,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-04-01 18:36:28,528 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 18:36:28,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 18:36:28,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 18:36:28,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 18:36:28,735 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 18:36:28,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 18:36:28,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1565630451, now seen corresponding path program 1 times [2023-04-01 18:36:28,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 18:36:28,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900870763] [2023-04-01 18:36:28,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 18:36:28,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 18:36:28,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:36:28,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 18:36:28,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:36:28,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 18:36:28,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 18:36:28,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900870763] [2023-04-01 18:36:28,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900870763] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 18:36:28,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588004766] [2023-04-01 18:36:28,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 18:36:28,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 18:36:28,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 18:36:28,846 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) [2023-04-01 18:36:28,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 18:36:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:36:28,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-01 18:36:28,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 18:36:28,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 18:36:28,955 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 18:36:28,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 18:36:28,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588004766] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 18:36:28,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 18:36:28,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2023-04-01 18:36:28,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453324464] [2023-04-01 18:36:28,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 18:36:29,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 18:36:29,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 18:36:29,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 18:36:29,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-04-01 18:36:29,005 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 18:36:29,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 18:36:29,135 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2023-04-01 18:36:29,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 18:36:29,135 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-04-01 18:36:29,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 18:36:29,136 INFO L225 Difference]: With dead ends: 41 [2023-04-01 18:36:29,137 INFO L226 Difference]: Without dead ends: 26 [2023-04-01 18:36:29,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2023-04-01 18:36:29,141 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 23 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 18:36:29,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 22 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 18:36:29,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-04-01 18:36:29,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-04-01 18:36:29,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 18:36:29,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2023-04-01 18:36:29,153 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 19 [2023-04-01 18:36:29,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 18:36:29,154 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2023-04-01 18:36:29,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 18:36:29,155 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2023-04-01 18:36:29,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-04-01 18:36:29,155 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 18:36:29,155 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 18:36:29,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 18:36:29,362 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,SelfDestructingSolverStorable3 [2023-04-01 18:36:29,362 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 18:36:29,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 18:36:29,363 INFO L85 PathProgramCache]: Analyzing trace with hash 553681769, now seen corresponding path program 2 times [2023-04-01 18:36:29,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 18:36:29,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544658587] [2023-04-01 18:36:29,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 18:36:29,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 18:36:29,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:36:29,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 18:36:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:36:29,530 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 18:36:29,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 18:36:29,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544658587] [2023-04-01 18:36:29,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544658587] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 18:36:29,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839406674] [2023-04-01 18:36:29,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-01 18:36:29,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 18:36:29,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 18:36:29,539 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) [2023-04-01 18:36:29,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 18:36:29,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-04-01 18:36:29,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 18:36:29,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-01 18:36:29,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 18:36:29,785 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-01 18:36:29,785 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 18:36:29,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839406674] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 18:36:29,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 18:36:29,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-04-01 18:36:29,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409216440] [2023-04-01 18:36:29,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 18:36:29,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 18:36:29,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 18:36:29,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 18:36:29,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-04-01 18:36:29,788 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 18:36:29,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 18:36:29,874 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2023-04-01 18:36:29,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 18:36:29,875 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2023-04-01 18:36:29,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 18:36:29,877 INFO L225 Difference]: With dead ends: 51 [2023-04-01 18:36:29,877 INFO L226 Difference]: Without dead ends: 36 [2023-04-01 18:36:29,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-04-01 18:36:29,878 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 8 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 18:36:29,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 72 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 18:36:29,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-04-01 18:36:29,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2023-04-01 18:36:29,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 18:36:29,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2023-04-01 18:36:29,892 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 22 [2023-04-01 18:36:29,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 18:36:29,893 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2023-04-01 18:36:29,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 18:36:29,893 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2023-04-01 18:36:29,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-04-01 18:36:29,895 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 18:36:29,895 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 18:36:29,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-01 18:36:30,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 18:36:30,101 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 18:36:30,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 18:36:30,101 INFO L85 PathProgramCache]: Analyzing trace with hash 160654759, now seen corresponding path program 1 times [2023-04-01 18:36:30,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 18:36:30,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254972900] [2023-04-01 18:36:30,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 18:36:30,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 18:36:30,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:36:30,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 18:36:30,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:36:30,207 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-01 18:36:30,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 18:36:30,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254972900] [2023-04-01 18:36:30,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254972900] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 18:36:30,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 18:36:30,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 18:36:30,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438074234] [2023-04-01 18:36:30,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 18:36:30,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 18:36:30,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 18:36:30,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 18:36:30,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 18:36:30,209 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 18:36:30,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 18:36:30,284 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2023-04-01 18:36:30,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 18:36:30,284 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2023-04-01 18:36:30,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 18:36:30,286 INFO L225 Difference]: With dead ends: 49 [2023-04-01 18:36:30,286 INFO L226 Difference]: Without dead ends: 34 [2023-04-01 18:36:30,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 18:36:30,287 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 31 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 18:36:30,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 17 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 18:36:30,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-04-01 18:36:30,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2023-04-01 18:36:30,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 18:36:30,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2023-04-01 18:36:30,294 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 22 [2023-04-01 18:36:30,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 18:36:30,294 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2023-04-01 18:36:30,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 18:36:30,295 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2023-04-01 18:36:30,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-04-01 18:36:30,295 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 18:36:30,295 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 18:36:30,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 18:36:30,296 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 18:36:30,296 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 18:36:30,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1646645798, now seen corresponding path program 1 times [2023-04-01 18:36:30,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 18:36:30,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250952955] [2023-04-01 18:36:30,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 18:36:30,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 18:36:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:36:30,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 18:36:30,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:36:30,424 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 18:36:30,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 18:36:30,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250952955] [2023-04-01 18:36:30,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250952955] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 18:36:30,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516585737] [2023-04-01 18:36:30,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 18:36:30,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 18:36:30,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 18:36:30,426 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 18:36:30,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 18:36:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:36:30,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 18:36:30,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 18:36:30,527 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 18:36:30,528 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 18:36:30,597 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 18:36:30,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516585737] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 18:36:30,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 18:36:30,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2023-04-01 18:36:30,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678603638] [2023-04-01 18:36:30,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 18:36:30,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 18:36:30,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 18:36:30,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 18:36:30,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2023-04-01 18:36:30,600 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 18:36:30,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 18:36:30,793 INFO L93 Difference]: Finished difference Result 53 states and 64 transitions. [2023-04-01 18:36:30,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 18:36:30,793 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2023-04-01 18:36:30,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 18:36:30,794 INFO L225 Difference]: With dead ends: 53 [2023-04-01 18:36:30,794 INFO L226 Difference]: Without dead ends: 35 [2023-04-01 18:36:30,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=211, Invalid=341, Unknown=0, NotChecked=0, Total=552 [2023-04-01 18:36:30,795 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 29 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 18:36:30,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 32 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 18:36:30,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-04-01 18:36:30,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-04-01 18:36:30,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 18:36:30,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2023-04-01 18:36:30,801 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 25 [2023-04-01 18:36:30,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 18:36:30,801 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2023-04-01 18:36:30,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 18:36:30,802 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2023-04-01 18:36:30,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-04-01 18:36:30,802 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 18:36:30,802 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 18:36:30,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 18:36:31,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 18:36:31,009 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 18:36:31,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 18:36:31,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1716338778, now seen corresponding path program 2 times [2023-04-01 18:36:31,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 18:36:31,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219082522] [2023-04-01 18:36:31,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 18:36:31,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 18:36:31,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:36:31,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 18:36:31,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:36:31,201 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 18:36:31,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 18:36:31,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219082522] [2023-04-01 18:36:31,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219082522] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 18:36:31,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128007810] [2023-04-01 18:36:31,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-01 18:36:31,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 18:36:31,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 18:36:31,203 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) [2023-04-01 18:36:31,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 18:36:31,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-01 18:36:31,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 18:36:31,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 12 conjunts are in the unsatisfiable core [2023-04-01 18:36:31,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 18:36:31,313 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 18:36:31,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 18:36:31,510 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 18:36:31,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128007810] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 18:36:31,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 18:36:31,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 26 [2023-04-01 18:36:31,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204799826] [2023-04-01 18:36:31,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 18:36:31,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-04-01 18:36:31,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 18:36:31,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-04-01 18:36:31,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2023-04-01 18:36:31,513 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 25 states have internal predecessors, (40), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 18:36:31,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 18:36:31,917 INFO L93 Difference]: Finished difference Result 65 states and 82 transitions. [2023-04-01 18:36:31,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-04-01 18:36:31,917 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 25 states have internal predecessors, (40), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2023-04-01 18:36:31,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 18:36:31,918 INFO L225 Difference]: With dead ends: 65 [2023-04-01 18:36:31,918 INFO L226 Difference]: Without dead ends: 47 [2023-04-01 18:36:31,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=853, Invalid=1403, Unknown=0, NotChecked=0, Total=2256 [2023-04-01 18:36:31,920 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 41 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 18:36:31,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 27 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 18:36:31,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-04-01 18:36:31,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2023-04-01 18:36:31,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 41 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 18:36:31,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2023-04-01 18:36:31,927 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 31 [2023-04-01 18:36:31,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 18:36:31,928 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2023-04-01 18:36:31,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 25 states have internal predecessors, (40), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 18:36:31,928 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2023-04-01 18:36:31,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-04-01 18:36:31,929 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 18:36:31,929 INFO L195 NwaCegarLoop]: trace histogram [22, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 18:36:31,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 18:36:32,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 18:36:32,135 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 18:36:32,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 18:36:32,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1682717350, now seen corresponding path program 3 times [2023-04-01 18:36:32,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 18:36:32,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730956736] [2023-04-01 18:36:32,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 18:36:32,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 18:36:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:36:32,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 18:36:32,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:36:32,674 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 18:36:32,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 18:36:32,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730956736] [2023-04-01 18:36:32,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730956736] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 18:36:32,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029619747] [2023-04-01 18:36:32,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-01 18:36:32,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 18:36:32,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 18:36:32,681 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) [2023-04-01 18:36:32,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 18:36:32,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-04-01 18:36:32,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 18:36:32,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 30 conjunts are in the unsatisfiable core [2023-04-01 18:36:32,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 18:36:32,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-04-01 18:36:33,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2023-04-01 18:36:33,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2023-04-01 18:36:33,170 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-04-01 18:36:33,172 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 18:36:33,329 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 18:36:33,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 78 [2023-04-01 18:36:33,370 INFO L321 Elim1Store]: treesize reduction 10, result has 65.5 percent of original size [2023-04-01 18:36:33,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 72 [2023-04-01 18:36:33,424 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-04-01 18:36:33,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 16 [2023-04-01 18:36:33,616 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-04-01 18:36:33,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029619747] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 18:36:33,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 18:36:33,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 8, 9] total 38 [2023-04-01 18:36:33,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724427382] [2023-04-01 18:36:33,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 18:36:33,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-04-01 18:36:33,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 18:36:33,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-04-01 18:36:33,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=339, Invalid=1067, Unknown=0, NotChecked=0, Total=1406 [2023-04-01 18:36:33,621 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand has 38 states, 37 states have (on average 1.837837837837838) internal successors, (68), 35 states have internal predecessors, (68), 3 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 18:36:34,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 18:36:34,592 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2023-04-01 18:36:34,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-04-01 18:36:34,593 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.837837837837838) internal successors, (68), 35 states have internal predecessors, (68), 3 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2023-04-01 18:36:34,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 18:36:34,594 INFO L225 Difference]: With dead ends: 75 [2023-04-01 18:36:34,594 INFO L226 Difference]: Without dead ends: 57 [2023-04-01 18:36:34,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 769 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1085, Invalid=3471, Unknown=0, NotChecked=0, Total=4556 [2023-04-01 18:36:34,596 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 70 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 18:36:34,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 68 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 18:36:34,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-04-01 18:36:34,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2023-04-01 18:36:34,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 49 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 18:36:34,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2023-04-01 18:36:34,606 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 43 [2023-04-01 18:36:34,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 18:36:34,607 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2023-04-01 18:36:34,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 1.837837837837838) internal successors, (68), 35 states have internal predecessors, (68), 3 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 18:36:34,607 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2023-04-01 18:36:34,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-04-01 18:36:34,608 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 18:36:34,608 INFO L195 NwaCegarLoop]: trace histogram [23, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 18:36:34,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 18:36:34,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 18:36:34,814 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 18:36:34,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 18:36:34,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1979158293, now seen corresponding path program 1 times [2023-04-01 18:36:34,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 18:36:34,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196235264] [2023-04-01 18:36:34,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 18:36:34,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 18:36:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:36:35,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 18:36:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:36:35,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-01 18:36:35,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:36:35,507 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 2 proven. 276 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-01 18:36:35,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 18:36:35,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196235264] [2023-04-01 18:36:35,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196235264] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 18:36:35,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666253119] [2023-04-01 18:36:35,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 18:36:35,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 18:36:35,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 18:36:35,509 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) [2023-04-01 18:36:35,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 18:36:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:36:35,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 25 conjunts are in the unsatisfiable core [2023-04-01 18:36:35,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 18:36:35,696 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-01 18:36:35,696 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 18:36:36,450 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 2 proven. 276 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-01 18:36:36,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666253119] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 18:36:36,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 18:36:36,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 26] total 52 [2023-04-01 18:36:36,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099180889] [2023-04-01 18:36:36,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 18:36:36,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-04-01 18:36:36,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 18:36:36,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-04-01 18:36:36,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2023-04-01 18:36:36,454 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand has 52 states, 52 states have (on average 1.3846153846153846) internal successors, (72), 51 states have internal predecessors, (72), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 18:36:37,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 18:36:37,694 INFO L93 Difference]: Finished difference Result 107 states and 137 transitions. [2023-04-01 18:36:37,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-04-01 18:36:37,694 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3846153846153846) internal successors, (72), 51 states have internal predecessors, (72), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 53 [2023-04-01 18:36:37,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 18:36:37,697 INFO L225 Difference]: With dead ends: 107 [2023-04-01 18:36:37,697 INFO L226 Difference]: Without dead ends: 81 [2023-04-01 18:36:37,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1542 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3726, Invalid=6174, Unknown=0, NotChecked=0, Total=9900 [2023-04-01 18:36:37,701 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 67 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 18:36:37,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 22 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 18:36:37,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-04-01 18:36:37,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2023-04-01 18:36:37,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 73 states have (on average 1.0547945205479452) internal successors, (77), 74 states have internal predecessors, (77), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 18:36:37,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions. [2023-04-01 18:36:37,719 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 53 [2023-04-01 18:36:37,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 18:36:37,720 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 84 transitions. [2023-04-01 18:36:37,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3846153846153846) internal successors, (72), 51 states have internal predecessors, (72), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 18:36:37,721 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 84 transitions. [2023-04-01 18:36:37,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-04-01 18:36:37,722 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 18:36:37,722 INFO L195 NwaCegarLoop]: trace histogram [48, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 18:36:37,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-01 18:36:37,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 18:36:37,929 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 18:36:37,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 18:36:37,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1106673977, now seen corresponding path program 2 times [2023-04-01 18:36:37,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 18:36:37,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124360870] [2023-04-01 18:36:37,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 18:36:37,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 18:36:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:36:39,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 18:36:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:36:39,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-01 18:36:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:36:39,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1185 backedges. 2 proven. 1176 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-01 18:36:39,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 18:36:39,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124360870] [2023-04-01 18:36:39,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124360870] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 18:36:39,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673250129] [2023-04-01 18:36:39,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-01 18:36:39,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 18:36:39,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 18:36:39,749 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) [2023-04-01 18:36:39,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 18:36:39,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-01 18:36:39,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 18:36:39,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 50 conjunts are in the unsatisfiable core [2023-04-01 18:36:39,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 18:36:40,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1185 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-01 18:36:40,030 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 18:36:42,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1185 backedges. 2 proven. 1176 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-01 18:36:42,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673250129] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 18:36:42,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 18:36:42,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51, 51] total 102 [2023-04-01 18:36:42,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205068922] [2023-04-01 18:36:42,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 18:36:42,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2023-04-01 18:36:42,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 18:36:42,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2023-04-01 18:36:42,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302 [2023-04-01 18:36:42,432 INFO L87 Difference]: Start difference. First operand 81 states and 84 transitions. Second operand has 102 states, 102 states have (on average 1.196078431372549) internal successors, (122), 101 states have internal predecessors, (122), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 18:36:45,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 18:36:45,989 INFO L93 Difference]: Finished difference Result 157 states and 212 transitions. [2023-04-01 18:36:45,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-04-01 18:36:45,989 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 1.196078431372549) internal successors, (122), 101 states have internal predecessors, (122), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 78 [2023-04-01 18:36:45,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 18:36:45,990 INFO L225 Difference]: With dead ends: 157 [2023-04-01 18:36:45,990 INFO L226 Difference]: Without dead ends: 131 [2023-04-01 18:36:45,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6217 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=14951, Invalid=24849, Unknown=0, NotChecked=0, Total=39800 [2023-04-01 18:36:45,997 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 117 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 18:36:45,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 42 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 18:36:45,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-04-01 18:36:46,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2023-04-01 18:36:46,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 123 states have (on average 1.032520325203252) internal successors, (127), 124 states have internal predecessors, (127), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 18:36:46,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 134 transitions. [2023-04-01 18:36:46,015 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 134 transitions. Word has length 78 [2023-04-01 18:36:46,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 18:36:46,016 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 134 transitions. [2023-04-01 18:36:46,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 1.196078431372549) internal successors, (122), 101 states have internal predecessors, (122), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 18:36:46,016 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 134 transitions. [2023-04-01 18:36:46,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-04-01 18:36:46,017 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 18:36:46,017 INFO L195 NwaCegarLoop]: trace histogram [98, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 18:36:46,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-01 18:36:46,223 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,SelfDestructingSolverStorable10 [2023-04-01 18:36:46,223 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 18:36:46,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 18:36:46,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1794498375, now seen corresponding path program 3 times [2023-04-01 18:36:46,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 18:36:46,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180038237] [2023-04-01 18:36:46,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 18:36:46,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 18:36:46,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:36:51,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 18:36:51,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:36:51,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-01 18:36:51,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:36:51,842 INFO L134 CoverageAnalysis]: Checked inductivity of 4860 backedges. 2 proven. 4851 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-01 18:36:51,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 18:36:51,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180038237] [2023-04-01 18:36:51,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180038237] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 18:36:51,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264346174] [2023-04-01 18:36:51,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-01 18:36:51,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 18:36:51,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 18:36:51,849 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) [2023-04-01 18:36:51,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-01 18:36:52,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-04-01 18:36:52,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 18:36:52,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 18 conjunts are in the unsatisfiable core [2023-04-01 18:36:52,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 18:36:52,893 INFO L134 CoverageAnalysis]: Checked inductivity of 4860 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4851 trivial. 0 not checked. [2023-04-01 18:36:52,893 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 18:36:53,127 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-04-01 18:36:53,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 11 [2023-04-01 18:36:53,358 INFO L134 CoverageAnalysis]: Checked inductivity of 4860 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4851 trivial. 0 not checked. [2023-04-01 18:36:53,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264346174] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 18:36:53,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 18:36:53,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 10, 9] total 116 [2023-04-01 18:36:53,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639546411] [2023-04-01 18:36:53,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 18:36:53,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2023-04-01 18:36:53,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 18:36:53,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2023-04-01 18:36:53,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5101, Invalid=8239, Unknown=0, NotChecked=0, Total=13340 [2023-04-01 18:36:53,363 INFO L87 Difference]: Start difference. First operand 131 states and 134 transitions. Second operand has 116 states, 116 states have (on average 1.3275862068965518) internal successors, (154), 115 states have internal predecessors, (154), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 18:36:59,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 18:36:59,151 INFO L93 Difference]: Finished difference Result 181 states and 191 transitions. [2023-04-01 18:36:59,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2023-04-01 18:36:59,152 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 1.3275862068965518) internal successors, (154), 115 states have internal predecessors, (154), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 128 [2023-04-01 18:36:59,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 18:36:59,153 INFO L225 Difference]: With dead ends: 181 [2023-04-01 18:36:59,153 INFO L226 Difference]: Without dead ends: 141 [2023-04-01 18:36:59,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 245 SyntacticMatches, 1 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7924 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=15710, Invalid=35592, Unknown=0, NotChecked=0, Total=51302 [2023-04-01 18:36:59,159 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 158 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 18:36:59,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 80 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 18:36:59,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-04-01 18:36:59,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 135. [2023-04-01 18:36:59,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 127 states have (on average 1.031496062992126) internal successors, (131), 128 states have internal predecessors, (131), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 18:36:59,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 138 transitions. [2023-04-01 18:36:59,177 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 138 transitions. Word has length 128 [2023-04-01 18:36:59,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 18:36:59,177 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 138 transitions. [2023-04-01 18:36:59,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 116 states have (on average 1.3275862068965518) internal successors, (154), 115 states have internal predecessors, (154), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 18:36:59,178 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 138 transitions. [2023-04-01 18:36:59,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-04-01 18:36:59,179 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 18:36:59,179 INFO L195 NwaCegarLoop]: trace histogram [99, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 18:36:59,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-01 18:36:59,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 18:36:59,386 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 18:36:59,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 18:36:59,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1133885460, now seen corresponding path program 4 times [2023-04-01 18:36:59,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 18:36:59,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827481021] [2023-04-01 18:36:59,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 18:36:59,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 18:36:59,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:37:04,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 18:37:04,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:37:04,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-04-01 18:37:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:37:04,850 INFO L134 CoverageAnalysis]: Checked inductivity of 4965 backedges. 2 proven. 4950 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-04-01 18:37:04,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 18:37:04,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827481021] [2023-04-01 18:37:04,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827481021] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 18:37:04,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824199080] [2023-04-01 18:37:04,850 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-01 18:37:04,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 18:37:04,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 18:37:04,853 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) [2023-04-01 18:37:04,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-01 18:37:05,137 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-01 18:37:05,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 18:37:05,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 1031 conjuncts, 101 conjunts are in the unsatisfiable core [2023-04-01 18:37:05,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 18:37:05,316 INFO L134 CoverageAnalysis]: Checked inductivity of 4965 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-01 18:37:05,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 18:37:14,896 INFO L134 CoverageAnalysis]: Checked inductivity of 4965 backedges. 2 proven. 4950 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-04-01 18:37:14,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824199080] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 18:37:14,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 18:37:14,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 102, 102] total 204 [2023-04-01 18:37:14,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51929400] [2023-04-01 18:37:14,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 18:37:14,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 204 states [2023-04-01 18:37:14,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 18:37:14,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2023-04-01 18:37:14,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20505, Invalid=20907, Unknown=0, NotChecked=0, Total=41412 [2023-04-01 18:37:14,909 INFO L87 Difference]: Start difference. First operand 135 states and 138 transitions. Second operand has 204 states, 204 states have (on average 1.0980392156862746) internal successors, (224), 203 states have internal predecessors, (224), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 18:37:28,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 18:37:28,179 INFO L93 Difference]: Finished difference Result 265 states and 371 transitions. [2023-04-01 18:37:28,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2023-04-01 18:37:28,180 INFO L78 Accepts]: Start accepts. Automaton has has 204 states, 204 states have (on average 1.0980392156862746) internal successors, (224), 203 states have internal predecessors, (224), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 132 [2023-04-01 18:37:28,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 18:37:28,181 INFO L225 Difference]: With dead ends: 265 [2023-04-01 18:37:28,181 INFO L226 Difference]: Without dead ends: 236 [2023-04-01 18:37:28,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 402 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25444 ImplicationChecksByTransitivity, 25.2s TimeCoverageRelationStatistics Valid=61106, Invalid=101706, Unknown=0, NotChecked=0, Total=162812 [2023-04-01 18:37:28,190 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 219 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 18:37:28,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 67 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 18:37:28,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-04-01 18:37:28,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2023-04-01 18:37:28,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 228 states have (on average 1.0175438596491229) internal successors, (232), 229 states have internal predecessors, (232), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 18:37:28,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 239 transitions. [2023-04-01 18:37:28,216 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 239 transitions. Word has length 132 [2023-04-01 18:37:28,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 18:37:28,217 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 239 transitions. [2023-04-01 18:37:28,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 204 states, 204 states have (on average 1.0980392156862746) internal successors, (224), 203 states have internal predecessors, (224), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 18:37:28,217 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 239 transitions. [2023-04-01 18:37:28,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-04-01 18:37:28,219 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 18:37:28,219 INFO L195 NwaCegarLoop]: trace histogram [200, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 18:37:28,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-04-01 18:37:28,426 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,SelfDestructingSolverStorable12 [2023-04-01 18:37:28,427 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 18:37:28,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 18:37:28,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1844065352, now seen corresponding path program 5 times [2023-04-01 18:37:28,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 18:37:28,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110395905] [2023-04-01 18:37:28,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 18:37:28,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 18:37:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:37:47,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 18:37:47,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:37:47,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2023-04-01 18:37:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:37:47,918 INFO L134 CoverageAnalysis]: Checked inductivity of 20115 backedges. 2 proven. 20100 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-04-01 18:37:47,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 18:37:47,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110395905] [2023-04-01 18:37:47,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110395905] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 18:37:47,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305320964] [2023-04-01 18:37:47,919 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-04-01 18:37:47,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 18:37:47,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 18:37:47,920 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) [2023-04-01 18:37:47,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process