/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/elimination_max_rec.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 01:04:25,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 01:04:25,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 01:04:25,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 01:04:25,380 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 01:04:25,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 01:04:25,381 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 01:04:25,388 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 01:04:25,409 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 01:04:25,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 01:04:25,410 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 01:04:25,410 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 01:04:25,410 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 01:04:25,410 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 01:04:25,415 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 01:04:25,416 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 01:04:25,416 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 01:04:25,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 01:04:25,416 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 01:04:25,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 01:04:25,416 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 01:04:25,416 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 01:04:25,417 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 01:04:25,417 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 01:04:25,417 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 01:04:25,417 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 01:04:25,417 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 01:04:25,417 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 01:04:25,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 01:04:25,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:04:25,418 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 01:04:25,418 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 01:04:25,418 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 01:04:25,418 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 01:04:25,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 01:04:25,418 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 01:04:25,418 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 01:04:25,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 01:04:25,418 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 01:04:25,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 01:04:25,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 01:04:25,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 01:04:25,640 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 01:04:25,640 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 01:04:25,642 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/elimination_max_rec.c [2022-01-10 01:04:25,703 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85ac574e2/b5f3a16c13e046a8bf06a19126bd894c/FLAGe82b3e895 [2022-01-10 01:04:26,079 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 01:04:26,079 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/verifythis/elimination_max_rec.c [2022-01-10 01:04:26,096 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85ac574e2/b5f3a16c13e046a8bf06a19126bd894c/FLAGe82b3e895 [2022-01-10 01:04:26,114 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85ac574e2/b5f3a16c13e046a8bf06a19126bd894c [2022-01-10 01:04:26,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 01:04:26,121 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 01:04:26,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 01:04:26,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 01:04:26,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 01:04:26,128 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:04:26" (1/1) ... [2022-01-10 01:04:26,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@536859d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:26, skipping insertion in model container [2022-01-10 01:04:26,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:04:26" (1/1) ... [2022-01-10 01:04:26,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 01:04:26,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 01:04:26,331 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/verifythis/elimination_max_rec.c[493,506] [2022-01-10 01:04:26,344 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:04:26,353 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 01:04:26,363 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/verifythis/elimination_max_rec.c[493,506] [2022-01-10 01:04:26,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:04:26,380 INFO L208 MainTranslator]: Completed translation [2022-01-10 01:04:26,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:26 WrapperNode [2022-01-10 01:04:26,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 01:04:26,381 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 01:04:26,381 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 01:04:26,381 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 01:04:26,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:26" (1/1) ... [2022-01-10 01:04:26,395 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:26" (1/1) ... [2022-01-10 01:04:26,411 INFO L137 Inliner]: procedures = 19, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 28 [2022-01-10 01:04:26,411 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 01:04:26,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 01:04:26,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 01:04:26,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 01:04:26,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:26" (1/1) ... [2022-01-10 01:04:26,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:26" (1/1) ... [2022-01-10 01:04:26,423 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:26" (1/1) ... [2022-01-10 01:04:26,423 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:26" (1/1) ... [2022-01-10 01:04:26,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:26" (1/1) ... [2022-01-10 01:04:26,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:26" (1/1) ... [2022-01-10 01:04:26,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:26" (1/1) ... [2022-01-10 01:04:26,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 01:04:26,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 01:04:26,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 01:04:26,438 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 01:04:26,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:26" (1/1) ... [2022-01-10 01:04:26,449 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:04:26,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:04:26,469 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 01:04:26,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 01:04:26,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 01:04:26,498 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-10 01:04:26,499 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-10 01:04:26,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 01:04:26,499 INFO L130 BoogieDeclarations]: Found specification of procedure check [2022-01-10 01:04:26,499 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2022-01-10 01:04:26,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 01:04:26,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 01:04:26,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 01:04:26,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-10 01:04:26,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-10 01:04:26,500 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-10 01:04:26,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 01:04:26,557 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 01:04:26,559 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 01:04:26,690 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 01:04:26,695 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 01:04:26,695 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 01:04:26,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:04:26 BoogieIcfgContainer [2022-01-10 01:04:26,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 01:04:26,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 01:04:26,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 01:04:26,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 01:04:26,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:04:26" (1/3) ... [2022-01-10 01:04:26,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed5f04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:04:26, skipping insertion in model container [2022-01-10 01:04:26,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:26" (2/3) ... [2022-01-10 01:04:26,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed5f04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:04:26, skipping insertion in model container [2022-01-10 01:04:26,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:04:26" (3/3) ... [2022-01-10 01:04:26,711 INFO L111 eAbstractionObserver]: Analyzing ICFG elimination_max_rec.c [2022-01-10 01:04:26,716 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 01:04:26,717 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 01:04:26,777 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 01:04:26,800 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 01:04:26,800 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 01:04:26,838 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 24 states have internal predecessors, (29), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-10 01:04:26,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-10 01:04:26,843 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:26,843 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:04:26,844 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:26,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:26,855 INFO L85 PathProgramCache]: Analyzing trace with hash 771481891, now seen corresponding path program 1 times [2022-01-10 01:04:26,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:26,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585868081] [2022-01-10 01:04:26,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:26,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:26,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:27,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:27,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:27,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:04:27,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:27,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585868081] [2022-01-10 01:04:27,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585868081] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:04:27,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:04:27,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 01:04:27,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781174650] [2022-01-10 01:04:27,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:04:27,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 01:04:27,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:27,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 01:04:27,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 01:04:27,117 INFO L87 Difference]: Start difference. First operand has 34 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 24 states have internal predecessors, (29), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2022-01-10 01:04:27,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:27,140 INFO L93 Difference]: Finished difference Result 65 states and 84 transitions. [2022-01-10 01:04:27,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 01:04:27,141 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 17 [2022-01-10 01:04:27,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:27,147 INFO L225 Difference]: With dead ends: 65 [2022-01-10 01:04:27,147 INFO L226 Difference]: Without dead ends: 30 [2022-01-10 01:04:27,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 01:04:27,154 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:27,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:04:27,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-01-10 01:04:27,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-01-10 01:04:27,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-10 01:04:27,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2022-01-10 01:04:27,188 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 17 [2022-01-10 01:04:27,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:27,189 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2022-01-10 01:04:27,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2022-01-10 01:04:27,189 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2022-01-10 01:04:27,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-10 01:04:27,191 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:27,191 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:04:27,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 01:04:27,191 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:27,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:27,192 INFO L85 PathProgramCache]: Analyzing trace with hash 184675877, now seen corresponding path program 1 times [2022-01-10 01:04:27,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:27,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587164404] [2022-01-10 01:04:27,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:27,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:27,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:27,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:27,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:27,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:04:27,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:27,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587164404] [2022-01-10 01:04:27,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587164404] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:04:27,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:04:27,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 01:04:27,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745060422] [2022-01-10 01:04:27,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:04:27,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:04:27,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:27,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:04:27,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:04:27,331 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-01-10 01:04:27,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:27,421 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2022-01-10 01:04:27,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 01:04:27,421 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 4 states have internal predecessors, (13), 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 17 [2022-01-10 01:04:27,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:27,424 INFO L225 Difference]: With dead ends: 57 [2022-01-10 01:04:27,424 INFO L226 Difference]: Without dead ends: 55 [2022-01-10 01:04:27,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:04:27,426 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 21 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:27,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 170 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:04:27,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-01-10 01:04:27,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2022-01-10 01:04:27,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 33 states have internal predecessors, (37), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-01-10 01:04:27,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2022-01-10 01:04:27,441 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 17 [2022-01-10 01:04:27,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:27,442 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2022-01-10 01:04:27,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-01-10 01:04:27,442 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2022-01-10 01:04:27,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-10 01:04:27,446 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:27,447 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:04:27,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 01:04:27,451 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:27,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:27,452 INFO L85 PathProgramCache]: Analyzing trace with hash 402022971, now seen corresponding path program 1 times [2022-01-10 01:04:27,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:27,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047719796] [2022-01-10 01:04:27,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:27,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:27,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:27,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:27,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-01-10 01:04:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:27,696 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:04:27,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:27,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047719796] [2022-01-10 01:04:27,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047719796] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:04:27,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819110767] [2022-01-10 01:04:27,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:27,697 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:04:27,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:04:27,700 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) [2022-01-10 01:04:27,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 01:04:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:27,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-10 01:04:27,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 01:04:28,045 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:04:28,046 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 01:04:28,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819110767] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:04:28,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 01:04:28,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 12 [2022-01-10 01:04:28,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497613321] [2022-01-10 01:04:28,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:04:28,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 01:04:28,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:28,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 01:04:28,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-01-10 01:04:28,048 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 01:04:28,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:28,238 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2022-01-10 01:04:28,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 01:04:28,239 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2022-01-10 01:04:28,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:28,243 INFO L225 Difference]: With dead ends: 61 [2022-01-10 01:04:28,244 INFO L226 Difference]: Without dead ends: 59 [2022-01-10 01:04:28,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-01-10 01:04:28,247 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 36 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:28,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 194 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:04:28,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-01-10 01:04:28,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 34. [2022-01-10 01:04:28,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-10 01:04:28,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2022-01-10 01:04:28,261 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 27 [2022-01-10 01:04:28,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:28,262 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2022-01-10 01:04:28,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 01:04:28,262 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2022-01-10 01:04:28,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-10 01:04:28,263 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:28,263 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:04:28,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 01:04:28,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:04:28,469 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:28,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:28,469 INFO L85 PathProgramCache]: Analyzing trace with hash 263671203, now seen corresponding path program 1 times [2022-01-10 01:04:28,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:28,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739440728] [2022-01-10 01:04:28,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:28,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:28,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:28,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:28,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-01-10 01:04:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:28,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-10 01:04:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:28,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-10 01:04:28,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:28,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-10 01:04:28,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:28,767 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 01:04:28,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:28,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739440728] [2022-01-10 01:04:28,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739440728] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:04:28,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986295128] [2022-01-10 01:04:28,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:28,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:04:28,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:04:28,772 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) [2022-01-10 01:04:28,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 01:04:28,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:28,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-10 01:04:28,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 01:04:29,364 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 01:04:29,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 01:04:29,731 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 01:04:29,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986295128] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 01:04:29,732 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 01:04:29,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 30 [2022-01-10 01:04:29,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94474715] [2022-01-10 01:04:29,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 01:04:29,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-10 01:04:29,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:29,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-10 01:04:29,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=746, Unknown=0, NotChecked=0, Total=870 [2022-01-10 01:04:29,739 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 30 states, 27 states have (on average 2.074074074074074) internal successors, (56), 24 states have internal predecessors, (56), 17 states have call successors, (19), 8 states have call predecessors, (19), 3 states have return successors, (12), 8 states have call predecessors, (12), 11 states have call successors, (12) [2022-01-10 01:04:30,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:30,856 INFO L93 Difference]: Finished difference Result 150 states and 197 transitions. [2022-01-10 01:04:30,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-10 01:04:30,857 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 2.074074074074074) internal successors, (56), 24 states have internal predecessors, (56), 17 states have call successors, (19), 8 states have call predecessors, (19), 3 states have return successors, (12), 8 states have call predecessors, (12), 11 states have call successors, (12) Word has length 46 [2022-01-10 01:04:30,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:30,861 INFO L225 Difference]: With dead ends: 150 [2022-01-10 01:04:30,862 INFO L226 Difference]: Without dead ends: 121 [2022-01-10 01:04:30,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=537, Invalid=2433, Unknown=0, NotChecked=0, Total=2970 [2022-01-10 01:04:30,866 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 174 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:30,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 860 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 01:04:30,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-01-10 01:04:30,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 88. [2022-01-10 01:04:30,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 56 states have (on average 1.1964285714285714) internal successors, (67), 59 states have internal predecessors, (67), 23 states have call successors, (23), 8 states have call predecessors, (23), 8 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2022-01-10 01:04:30,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 111 transitions. [2022-01-10 01:04:30,904 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 111 transitions. Word has length 46 [2022-01-10 01:04:30,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:30,905 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 111 transitions. [2022-01-10 01:04:30,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 2.074074074074074) internal successors, (56), 24 states have internal predecessors, (56), 17 states have call successors, (19), 8 states have call predecessors, (19), 3 states have return successors, (12), 8 states have call predecessors, (12), 11 states have call successors, (12) [2022-01-10 01:04:30,906 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 111 transitions. [2022-01-10 01:04:30,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-10 01:04:30,910 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:30,911 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:04:30,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 01:04:31,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-10 01:04:31,132 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:31,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:31,132 INFO L85 PathProgramCache]: Analyzing trace with hash 766524055, now seen corresponding path program 1 times [2022-01-10 01:04:31,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:31,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749744670] [2022-01-10 01:04:31,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:31,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:31,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:31,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:31,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-10 01:04:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:31,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-10 01:04:31,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:31,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-10 01:04:31,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:31,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-10 01:04:31,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:31,438 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 01:04:31,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:31,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749744670] [2022-01-10 01:04:31,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749744670] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:04:31,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377368428] [2022-01-10 01:04:31,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:31,439 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:04:31,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:04:31,440 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) [2022-01-10 01:04:31,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 01:04:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:31,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 34 conjunts are in the unsatisfiable core [2022-01-10 01:04:31,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 01:04:32,003 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 01:04:32,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 01:04:32,459 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 01:04:32,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377368428] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 01:04:32,459 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 01:04:32,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 33 [2022-01-10 01:04:32,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913621009] [2022-01-10 01:04:32,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 01:04:32,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-10 01:04:32,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:32,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-10 01:04:32,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=927, Unknown=0, NotChecked=0, Total=1056 [2022-01-10 01:04:32,462 INFO L87 Difference]: Start difference. First operand 88 states and 111 transitions. Second operand has 33 states, 30 states have (on average 1.9666666666666666) internal successors, (59), 27 states have internal predecessors, (59), 17 states have call successors, (19), 8 states have call predecessors, (19), 3 states have return successors, (12), 8 states have call predecessors, (12), 11 states have call successors, (12) [2022-01-10 01:04:34,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:34,560 INFO L93 Difference]: Finished difference Result 277 states and 373 transitions. [2022-01-10 01:04:34,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-10 01:04:34,561 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 1.9666666666666666) internal successors, (59), 27 states have internal predecessors, (59), 17 states have call successors, (19), 8 states have call predecessors, (19), 3 states have return successors, (12), 8 states have call predecessors, (12), 11 states have call successors, (12) Word has length 47 [2022-01-10 01:04:34,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:34,564 INFO L225 Difference]: With dead ends: 277 [2022-01-10 01:04:34,564 INFO L226 Difference]: Without dead ends: 242 [2022-01-10 01:04:34,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1110 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=858, Invalid=4544, Unknown=0, NotChecked=0, Total=5402 [2022-01-10 01:04:34,568 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 212 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:34,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 1220 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 01:04:34,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-01-10 01:04:34,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 145. [2022-01-10 01:04:34,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 92 states have (on average 1.2282608695652173) internal successors, (113), 97 states have internal predecessors, (113), 41 states have call successors, (41), 13 states have call predecessors, (41), 11 states have return successors, (38), 34 states have call predecessors, (38), 36 states have call successors, (38) [2022-01-10 01:04:34,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 192 transitions. [2022-01-10 01:04:34,631 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 192 transitions. Word has length 47 [2022-01-10 01:04:34,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:34,633 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 192 transitions. [2022-01-10 01:04:34,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 1.9666666666666666) internal successors, (59), 27 states have internal predecessors, (59), 17 states have call successors, (19), 8 states have call predecessors, (19), 3 states have return successors, (12), 8 states have call predecessors, (12), 11 states have call successors, (12) [2022-01-10 01:04:34,633 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 192 transitions. [2022-01-10 01:04:34,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-10 01:04:34,641 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:34,642 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:04:34,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 01:04:34,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:04:34,867 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:34,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:34,867 INFO L85 PathProgramCache]: Analyzing trace with hash 930714617, now seen corresponding path program 2 times [2022-01-10 01:04:34,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:34,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264266607] [2022-01-10 01:04:34,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:34,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:35,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:35,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:35,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:04:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:35,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 01:04:35,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:35,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-01-10 01:04:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:35,435 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 01:04:35,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:35,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264266607] [2022-01-10 01:04:35,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264266607] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:04:35,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556563033] [2022-01-10 01:04:35,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 01:04:35,436 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:04:35,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:04:35,440 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) [2022-01-10 01:04:35,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 01:04:35,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 01:04:35,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 01:04:35,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 65 conjunts are in the unsatisfiable core [2022-01-10 01:04:35,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 01:04:35,565 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-10 01:04:35,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 01:04:35,596 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 18 [2022-01-10 01:04:36,441 INFO L353 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2022-01-10 01:04:36,442 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 16 [2022-01-10 01:04:36,547 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:04:36,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 01:04:36,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556563033] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:04:36,722 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 01:04:36,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22] total 34 [2022-01-10 01:04:36,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980996649] [2022-01-10 01:04:36,723 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 01:04:36,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-10 01:04:36,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:36,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-10 01:04:36,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1227, Unknown=0, NotChecked=0, Total=1332 [2022-01-10 01:04:36,724 INFO L87 Difference]: Start difference. First operand 145 states and 192 transitions. Second operand has 34 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 10 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-10 01:04:38,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:38,069 INFO L93 Difference]: Finished difference Result 228 states and 304 transitions. [2022-01-10 01:04:38,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-10 01:04:38,070 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 10 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 38 [2022-01-10 01:04:38,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:38,072 INFO L225 Difference]: With dead ends: 228 [2022-01-10 01:04:38,072 INFO L226 Difference]: Without dead ends: 218 [2022-01-10 01:04:38,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 27 SyntacticMatches, 8 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 628 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=259, Invalid=3047, Unknown=0, NotChecked=0, Total=3306 [2022-01-10 01:04:38,074 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 60 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 227 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:38,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 757 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 946 Invalid, 0 Unknown, 227 Unchecked, 0.5s Time] [2022-01-10 01:04:38,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-01-10 01:04:38,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 200. [2022-01-10 01:04:38,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 126 states have (on average 1.2142857142857142) internal successors, (153), 134 states have internal predecessors, (153), 55 states have call successors, (55), 20 states have call predecessors, (55), 18 states have return successors, (56), 45 states have call predecessors, (56), 50 states have call successors, (56) [2022-01-10 01:04:38,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 264 transitions. [2022-01-10 01:04:38,119 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 264 transitions. Word has length 38 [2022-01-10 01:04:38,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:38,120 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 264 transitions. [2022-01-10 01:04:38,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 10 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-10 01:04:38,120 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 264 transitions. [2022-01-10 01:04:38,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 01:04:38,122 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:38,123 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:04:38,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-10 01:04:38,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:04:38,339 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:38,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:38,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1656176335, now seen corresponding path program 1 times [2022-01-10 01:04:38,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:38,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917817440] [2022-01-10 01:04:38,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:38,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:38,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:38,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:38,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:38,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:04:38,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:38,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-10 01:04:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:38,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-10 01:04:38,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:38,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-10 01:04:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:38,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-10 01:04:38,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:38,758 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-10 01:04:38,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:38,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917817440] [2022-01-10 01:04:38,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917817440] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:04:38,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878109906] [2022-01-10 01:04:38,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:38,759 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:04:38,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:04:38,760 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) [2022-01-10 01:04:38,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-10 01:04:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:38,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 47 conjunts are in the unsatisfiable core [2022-01-10 01:04:38,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 01:04:39,472 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 10 proven. 27 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 01:04:39,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 01:04:40,049 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-10 01:04:40,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878109906] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 01:04:40,049 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 01:04:40,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 42 [2022-01-10 01:04:40,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824991737] [2022-01-10 01:04:40,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 01:04:40,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-10 01:04:40,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:40,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-10 01:04:40,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1533, Unknown=0, NotChecked=0, Total=1722 [2022-01-10 01:04:40,051 INFO L87 Difference]: Start difference. First operand 200 states and 264 transitions. Second operand has 42 states, 39 states have (on average 1.8974358974358974) internal successors, (74), 33 states have internal predecessors, (74), 20 states have call successors, (25), 11 states have call predecessors, (25), 3 states have return successors, (15), 11 states have call predecessors, (15), 14 states have call successors, (15) [2022-01-10 01:04:42,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:42,668 INFO L93 Difference]: Finished difference Result 581 states and 814 transitions. [2022-01-10 01:04:42,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-10 01:04:42,668 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 39 states have (on average 1.8974358974358974) internal successors, (74), 33 states have internal predecessors, (74), 20 states have call successors, (25), 11 states have call predecessors, (25), 3 states have return successors, (15), 11 states have call predecessors, (15), 14 states have call successors, (15) Word has length 58 [2022-01-10 01:04:42,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:42,672 INFO L225 Difference]: With dead ends: 581 [2022-01-10 01:04:42,672 INFO L226 Difference]: Without dead ends: 484 [2022-01-10 01:04:42,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1959 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1049, Invalid=6607, Unknown=0, NotChecked=0, Total=7656 [2022-01-10 01:04:42,676 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 264 mSDsluCounter, 1892 mSDsCounter, 0 mSdLazyCounter, 1440 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 2024 SdHoareTripleChecker+Invalid, 1812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:42,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 2024 Invalid, 1812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1440 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 01:04:42,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-01-10 01:04:42,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 371. [2022-01-10 01:04:42,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 229 states have (on average 1.2096069868995634) internal successors, (277), 241 states have internal predecessors, (277), 111 states have call successors, (111), 34 states have call predecessors, (111), 30 states have return successors, (124), 95 states have call predecessors, (124), 105 states have call successors, (124) [2022-01-10 01:04:42,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 512 transitions. [2022-01-10 01:04:42,756 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 512 transitions. Word has length 58 [2022-01-10 01:04:42,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:42,756 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 512 transitions. [2022-01-10 01:04:42,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 39 states have (on average 1.8974358974358974) internal successors, (74), 33 states have internal predecessors, (74), 20 states have call successors, (25), 11 states have call predecessors, (25), 3 states have return successors, (15), 11 states have call predecessors, (15), 14 states have call successors, (15) [2022-01-10 01:04:42,756 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 512 transitions. [2022-01-10 01:04:42,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-10 01:04:42,759 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:42,759 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:04:42,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-10 01:04:42,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:04:42,976 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:42,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:42,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1380346903, now seen corresponding path program 3 times [2022-01-10 01:04:42,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:42,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131180047] [2022-01-10 01:04:42,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:42,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:43,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:43,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:43,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 01:04:43,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:43,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-10 01:04:43,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:43,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 01:04:43,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:43,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 01:04:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:43,711 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 01:04:43,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:43,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131180047] [2022-01-10 01:04:43,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131180047] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:04:43,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264255559] [2022-01-10 01:04:43,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-10 01:04:43,712 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:04:43,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:04:43,716 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) [2022-01-10 01:04:43,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-10 01:04:43,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-10 01:04:43,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 01:04:43,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-10 01:04:43,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 01:04:46,031 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_check_~y_BEFORE_CALL_31 Int) (v_check_~x0~0_BEFORE_CALL_3 Int) (v_check_~a.offset_BEFORE_CALL_4 Int) (v_check_~a.base_BEFORE_CALL_4 Int)) (and (let ((.cse0 (select |c_#memory_int| v_check_~a.base_BEFORE_CALL_4))) (<= (select .cse0 (+ v_check_~a.offset_BEFORE_CALL_4 (* v_check_~x0~0_BEFORE_CALL_3 4))) (select .cse0 (+ v_check_~a.offset_BEFORE_CALL_4 (* v_check_~y_BEFORE_CALL_31 4))))) (not (<= v_check_~y_BEFORE_CALL_31 v_check_~x0~0_BEFORE_CALL_3)))) is different from true [2022-01-10 01:05:00,426 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_check_~y_BEFORE_CALL_31 Int) (v_check_~x0~0_BEFORE_CALL_3 Int) (v_check_~a.offset_BEFORE_CALL_4 Int) (v_check_~a.base_BEFORE_CALL_4 Int)) (and (let ((.cse0 (select |c_#memory_int| v_check_~a.base_BEFORE_CALL_4))) (<= (select .cse0 (+ v_check_~a.offset_BEFORE_CALL_4 (* v_check_~x0~0_BEFORE_CALL_3 4))) (select .cse0 (+ v_check_~a.offset_BEFORE_CALL_4 (* v_check_~y_BEFORE_CALL_31 4))))) (not (<= v_check_~y_BEFORE_CALL_31 v_check_~x0~0_BEFORE_CALL_3)))) (exists ((v_check_~x0~0_BEFORE_CALL_4 Int) (check_~y Int) (v_check_~a.offset_BEFORE_CALL_5 Int) (v_check_~a.base_BEFORE_CALL_5 Int)) (and (not (<= check_~y v_check_~x0~0_BEFORE_CALL_4)) (let ((.cse1 (select |c_#memory_int| v_check_~a.base_BEFORE_CALL_5))) (<= (select .cse1 (+ v_check_~a.offset_BEFORE_CALL_5 (* v_check_~x0~0_BEFORE_CALL_4 4))) (select .cse1 (+ (* 4 check_~y) v_check_~a.offset_BEFORE_CALL_5)))) (<= check_~y (+ v_check_~x0~0_BEFORE_CALL_4 1))))) is different from true [2022-01-10 01:05:15,282 INFO L353 Elim1Store]: treesize reduction 261, result has 50.7 percent of original size [2022-01-10 01:05:15,283 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 80 treesize of output 283 [2022-01-10 01:05:24,557 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 01:05:24,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 01:05:24,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264255559] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:05:24,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 01:05:24,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [23] total 38 [2022-01-10 01:05:24,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868825354] [2022-01-10 01:05:24,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:05:24,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-10 01:05:24,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:05:24,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-10 01:05:24,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1181, Unknown=6, NotChecked=138, Total=1406 [2022-01-10 01:05:24,560 INFO L87 Difference]: Start difference. First operand 371 states and 512 transitions. Second operand has 17 states, 14 states have (on average 2.142857142857143) internal successors, (30), 12 states have internal predecessors, (30), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-01-10 01:05:30,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:05:30,787 INFO L93 Difference]: Finished difference Result 466 states and 651 transitions. [2022-01-10 01:05:30,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 01:05:30,788 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 2.142857142857143) internal successors, (30), 12 states have internal predecessors, (30), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 49 [2022-01-10 01:05:30,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:05:30,796 INFO L225 Difference]: With dead ends: 466 [2022-01-10 01:05:30,797 INFO L226 Difference]: Without dead ends: 464 [2022-01-10 01:05:30,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 37.4s TimeCoverageRelationStatistics Valid=101, Invalid=1461, Unknown=6, NotChecked=154, Total=1722 [2022-01-10 01:05:30,798 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 13 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 300 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:05:30,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 435 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 300 Unchecked, 0.0s Time] [2022-01-10 01:05:30,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2022-01-10 01:05:30,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 414. [2022-01-10 01:05:30,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 254 states have (on average 1.2165354330708662) internal successors, (309), 271 states have internal predecessors, (309), 126 states have call successors, (126), 43 states have call predecessors, (126), 33 states have return successors, (144), 99 states have call predecessors, (144), 120 states have call successors, (144) [2022-01-10 01:05:30,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 579 transitions. [2022-01-10 01:05:30,874 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 579 transitions. Word has length 49 [2022-01-10 01:05:30,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:05:30,874 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 579 transitions. [2022-01-10 01:05:30,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 2.142857142857143) internal successors, (30), 12 states have internal predecessors, (30), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-01-10 01:05:30,875 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 579 transitions. [2022-01-10 01:05:30,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-10 01:05:30,877 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:05:30,877 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:05:30,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-10 01:05:31,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:05:31,083 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:05:31,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:05:31,084 INFO L85 PathProgramCache]: Analyzing trace with hash -208000999, now seen corresponding path program 2 times [2022-01-10 01:05:31,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:05:31,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508836505] [2022-01-10 01:05:31,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:05:31,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:05:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:31,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:05:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:31,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 01:05:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:31,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-10 01:05:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:31,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 01:05:31,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:31,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 01:05:31,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:31,519 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 01:05:31,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:05:31,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508836505] [2022-01-10 01:05:31,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508836505] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:05:31,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272649405] [2022-01-10 01:05:31,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 01:05:31,520 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:05:31,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:05:31,524 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) [2022-01-10 01:05:31,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process